C13 10 100
User Manual: Pdf C13-10-100
Open the PDF directly: View PDF 
.
Page Count: 412
| Download | |
| Open PDF In Browser | View PDF |
clalapn)·
Datapro Reports on
Data Communications
C13-010-101
Processors
Communications
Processors:
Market Overview
Synopsis
Editor's Note
This report examines the communications processor market. For information on the technology, see
"Communications Processors: Technology Overview"; for comparison
columns detailing the features of key
products, see "Communications Processors: Comparison Columns."
Report Highlights
The communications processor industry still exists, not as a shining
star in the communications firmament, but as a reliable source of
light. Although IBM, NCR, Unisys,
and Amdahl dominate the market,
other vendors have managed to infiltrate it. The major vendors continue
to enhance their products, while
NCR and Unisys have added new
models.
IBM recently announced that by the
middle of 1991, it will be adding
DS3, FDDI, and ESCON networking
support to the 3745 Communication
Controller, making the 3745 frontend processor a vital part in IBM's
networking strategy.
NCR added one new system, the
5645-B, and enhanced all the A models to B models. All the B models
have been substantially reduced in
physical size, number of components, and power and cooling requirements.
Amdahl enhanced the 4745 Series by
expanding the memory capacity to
8M bytes, allowing the 4745 to connect up to four 4M bps token-ring
networks. Amdahl also expanded the
channel connectivity to support four
active channel adapters in the base
frame and extended the 4745's Integrated Switching Architecture (ISA).
Unisys added three new models: the
DCP/25, DCP/35, and DCP/55. Enhancements include support for
power-on-pluggable line modules,
input/output module (10M) power
supplies, three input/output processors (lOPs) in a single 10M (DCP/50
and DCP/55 models only), the newly
designed Maintenance Control Feature (MCF), and an improved power
control feature.
-By Barbara Rinehart
Associate Editor/Analyst
1991 McGraw-Hili, Incorporated. Reproduction Prohibited.
Datapro Research Group. Delran NJ 08075 USA
@
_,_'L _ _
~
_ __
MAY 1991
C13-010-102
Processors
Analysis
Ma~ketOverview
Although communications processors do not generate bold headlines, the products sustain a steady
revenue stream for the four industry leaders: IBM,
NCR, Unisys, and Amdahl. The technology is mature, but it still fills a need for these market segments: IBM and plug-compatible communications
processors for the IBM mainframe environment,
communications processors dedicated to the mainframe architectures of vendors other th~n IBM,
and intelligent concentrators designed to serve in
transparent network architectures.
Vendors did not allow their products to stagnate. Instead, the communications processors of
the '90s support the hot items oftoday's communications marketplace: Tl, LANs, SNA, TCP/IP, and
IBM's NetView.
In 1990, IBM and Amdahl did not introduce
new communications processor lines but dusted off
existing ones and made them shinier and more up
to date with token-ring and T 1 capabilities. Amdahl made an announcement in April 1990 about
supporting Tl, but as of February 1991, this major
feature was not available.
Vendor Survey Results
Twenty-eight vendors of communications processors responded to this year's survey requests. They
provided details on the principal characteristics of
65 products. The data collected indicates that the
communications processors are most widely used
as remote line concentrators. Forty-two of the
sixty-four products serve in that capacity, and five
vendors did not respond to the question. Fortyseven processors can function as front-end processors. In last year's survey, 17 ofthe 42
communications processors were used as distributed processing nodes; in this year's survey, 27 of
the 65 products perform that function. All of the
processors perform protocol conversion.
MAY 1991
Communications
Proce_s=
Market Overview
Datapro Reports on
Data Communications
IBM's Systems Network Architecture (SNA)
is the company's IQaster plan for communications
with and among IBM computers, terminals, and
office systems. It is also the company's vehicle for
interconnection with other industry-standard networks, such as X.25. Without the capability to
communicate with IBM equipment, a product
starts its life cycle at a disadvantage. Aware of the
importance of penetrating the IBM world, vendors
have incorporated support for SNA into 44 of the
64 products included in the survey (see Figure 1).
Open Systems Interconnection (OSI) emerged
in the late '70s as an attempt by the International
Organization for Standardization (ISO) to resolve
compatibility issues. The OSI model for open architecture consists of seven layers. Many vendors
have released products that conform to OSI requirements. In the communications processor
field, however, OSI conformity does not appear to
be a driving force. Of the 64 products in the survey, only 23 adhere to OSI specifications.
The X.25 Recommendation of the CCITT
was developed in response to the need for a standard interface between packet-switching networks.
The X.25 standard enables terminals and computers to be connected to public and private packetswitching networks. More than half of the
communications processors in the survey conform
toX.25.
Vendor Strategies
Amdahl
In April 1990, Amdahl enhanced both 4745 models with 4M bps token-ring adapters, extended the
memory capacity to a total of 8M bytes, extended
the channel connectivity of both models to support
up to four active channel adapters in the base
frame, and extended the Integrated Switching Architecture (ISA) with automatic backup capabilities. The base prices of the 4745 models have not
changed since November 1989.
IBII
The IBM product line currently consists of the
3745 Models 130, 150, 170,210, and 410.
IBM 3745 Models 130, 150, and 170 complete IBM's front-end processor line at the low end.
Model 130 accommodates four 4M bps or 16M bps
III 1991 McGraw-Hili, Incorporated. ReproductiOn Prohibited.
Datapro Research Group. Delran NJ 08075 USA
Datapro Reports on
Data Communications
(
Communications
Processorsl
Marke' Overview
Token-Ring interfaces, two Tllines, and four hostchannel links. Model 150, a remote line concentrator, supports 16 communications ports operating
at speeds up to 256K bps, two 4M bps or 16M bps
Token-Ring interfaces, and one TIline. Model
170, a general-purpose controller, supports upto
112 lines at speeds up to 256K bps, two 4M bps or
16M bps Token-Ring interfaces, and two Tllines.
IBM 3745 Model 210 and Model 410 are
high-end models. The Model 210 has a single Central Control Unit (CCU) and is field upgradable to
the Model 410. The Model 410 has two independent CCUs, each capable of running a separate
Network Control Program (NCP). Both the Model
210 and 410 support 16 or 256 hosts with tokenring simultaneously, and up to 896 medium- and
high-speed lines. In the third or fourth quarter of
1991, IBM is expected to add DS3, FDDI, and ESCON networking support to the 3745 Communications Controller, making the 3745 front-end
processor a key piece in IBM's networking strategy.
Other enhancements to the 3745 are expected
sometime during 1991.
NCR Network Products Division
In 1990, NCR added one new system and replaced
all the A models with B models.
The new model, the NCR 5645-B, was announced in August 1990. This new communications processor supports up to four T 1 links, 128
lines, four channel-connected hosts, 4M to 16M
bytes of main storage, 80M bytes of fixed disk storage capacity, and support for up to 12 TCP/IP
Ethernet LANs and up to 16 token-ring LANs. All
of the line, LAN, and host connectivity maximums
cannot be achieved simultaneously.
The product line now consists of the NCR
5645-B, NCR 5655-B, NCR 5665-B, and NCR
5675-B. NCR enhanced the models by changing
the physical size, number of components, and
power and cooling requirements.
NCR also improved the processors' hardware
design: Instruction Execution Unit (lEU) has been
added on a single, 60,000-gate VLSI CMOS chip;
cache and main storage are now on a single Printed
Circuit Board (PCB); the total number of PCB
components has been reduced from 36 to 6; the
system cabinet size has been reduced from 9.9 to
4.67 square feet; the bulk power supply is now
silicon-based technology; and a Local Communication Interface (LCIF) allows direct attachment of
1991 McGraw-Hili, Incorporated. Reproduction Prohibited.
Datapro Research Group. Delran NJ 08075 USA
I!l
C13-010-103
Processors
Figure 1.
Standards and Architectures
50
40
30
20
10
o
SNA
BSC
OSI
X_2S
Indicates the number of communication processors, scored on this year's survey, that
comply to the standards and architectures featured above.
rack-mount, 16-line communications bases and
network interface adapters for low-end systems
that have no switching requirement.
Unisys
The newest models to Unisys' communications
processors product line include the DCPI25, DCPI
35, and DCPI55. In 1990, Unisys enhanced the
DCP/5, DCP/15, DCP/30, and DCP/55. The enhancements made to communications processors
include support for power-on-pluggable line modules, redundant 10M power supplies, highperformance 10M capability, three input/output
Processors (lOPs) in a single input/output Module
(10M) (DCP/50 and DCP/55 systems only), a
newly designed Maintenance Control Feature
(MCF), and an improved power control feature.
Future Directions
As long as vendors prime their products for the
needs of the '90s, the communications processor
market will experience a steady but not spectacular
growth. As front-end processors, these machines
perform important tasks. As remote concentrators
and nodes in networks, they perform functions that
are not about to become obsolete.
MAY 1991
C13·010-104
Processors
Communication.
Proc....r.:
".rket Ov.rvI.w .
Datapro Reports on
Data Communications
It is doubtful that many newcomers will arrive on the communications processor scene. Most
of the market belongs to IBM, NCR, Unisys, and
Amdahl. Taking on these giants is not likely to appeal to start-up companies, which would probably
prefer entering a more dynamic field with more
possibilities.
Most of the activity in the communications
processor field will come from the big four. Currently, NCR and IBM appear to be sparring with
each other for supremacy, while Amdahl appears
to be banking on the ongoing success of its 4745
communications processor.•
MAY 1991
@ 1991 McGraw-Hili, Incorporated. Reproduction Prohibited.
Datapro Research Group. Delran NJ 08075 USA
dalaplo°
Datapro Reports on
Data Communications
C13-010-101
Processors
Communications
Processors:
Market Overview
In this report:
Synopsis
Market
Overview ................... -102
Editor's Note
This report examines the communications processor market. For information on the technology, see Report
C13-010-201; for comparison columns detailing the features of key
products, see Report C13-01O-30l.
Vendor Survey
Results ...................... -102
Vendor
Strategies ................. -103
Future Directions ...... -105
Report Highlights
Communications processors date
back to the early '70s, tracing their
ancestry to the venerable and effective IBM 3705 Communications
Controller. The 3705 functioned as a
front-end or remote full-service communications processor for the IBM
mainframe environment.
Aware of the potential in the industry, Amdahl, NCR Comten, and
Unisys also produced equipment
that served as front-end processors,
remote concentrators, and network
nodes. Relieving the mainframe of
the burden of communications created a new industry.
The industry still exists, not as a
shining star in the communications
firmament but as a reliable source of
light. Although IBM, NCR Comten,
and Amdahl dominate the market,
other vendors have managed to infiltrate it. The major news last year emanated from the NCR Comten camp
1990 McGraw-Hili, Incorporated. Reproduction Prohibited. Datapro Research.
Delran NJ 08075 USA
@
when the company introduced a new
line of communications processors:
the 5655, 5665, and 5675. In addition to the new line, NCR Comten
released several products for the
5660 communications processor,
introduced complementary software,
and added TCP/IP and Ethernet interfaces to its offerings.
IBM added three lower-level models
to its 3745 communications controller and enhanced the 3745, Models
210 and 410. Amdahl released a software migration tool that allows its
4745 to run IBM networking software releases on its machines.
Unisys incorporated the DCP/5 into
its Distributed Communications
Processors (DCP) Series. Designed
for small sites, the DCP/5 supports
up to seven lines.
Most of the activity in the market
reflects vendors' successful efforts at
making their products compatible
with current communications standards and protocols. Vendors have
also integrated support for T 1, fractional T 1, and LAN s into their products.
MAY 1990
C13-010-102
Processors
Analysis
Market Overview
Although communications processors do not generate bold headlines, the products sustain a steady
revenue stream for the three industry leaders: IBM,
NCR Comten, and Amdahl. The technology has
been around for a while, but it still fills a need for
these market segments: IBM and plug-compatible
communications processors for the IBM mainframe environment; communications processors
dedicated to the mainframe architectures of vendors other than IBM; and intelligent concentrators
designed to serve in transparent network architectures.
Vendors did not allow their products to stagnate. Instead, the communications processors of
the '90s support the hot items of today's communications marketplace: T1, fractional T1, LANs,
SNA, TCP/IP, and IBM's NetView.
NCR Comten stole the spotlight in 1989 by
introducing three new communications processors:
Comten 5655, Comten 5665, and Comten 5675.
Designed for SNA and multi vendor networks, the
processors offer up to 2 1h times the performance of
Communications
Processors:
Market Overview
Datapro Reports on
Data Communications
an IBM 3745. The systems feature direct termination of up to 24 T1lines and up to 16 concurrently
active mainframes. In addition, the systems occupy
50 percent less floor space, consume 26 percent
less power, and generate 26 percent less heat than
the vendor's earlier systems.
In 1989, IBM and Amdahl did not introduce
new communications processor lines, but dusted
off existing ones and made them shinier and more
up to date with Token-Ring and Tl capabilities.
IBM rounded out the 3745 processor line with the
Models 130, 150, and 170, each of which features
additional Token-Ring support. The Model 130
also handles high-speed host-to-host or host-toLAN chores over T 1 lines.
Vendor Survey Results
Sixteen vendors of communications processors responded to this year's survey requests. They are:
• Amdahl Communications
• Bull HN Worldwide Information Systems
• Chi Corporation
• Computer Communications, Inc.
/
• Computer Network Technology Corporation
• Computerm Corporation
• Control Data Corporation
• Infotron Systems Corporation
• International Business Machines Corporation
(IBM)
• Lemcom Systems, Inc.
• NCRComten
Figure 1.
Applications
50
• NTX Communications Corporation
• Periphonics Corporation
• SBE
• Thomas Engineering Company
40
• U nisys Corporation
30
20
10
o
FrontRemote
Distributed
End
Line
Processing
Processors Concentrators
Nodes
MAY 1990
The vendors provided details on the principal
characteristics of 42 products. The data collected
indicates that the communications processors are
most widely used as remote line concentrators.
Thirty-nine of the forty-two products serve in that
capacity. Thirty-seven processors can function as
front-end processors. The number of communications processors used as distributed processing
1990 McGraw-Hili. Incorporated. Reproduction Prohibited. Datapro Research.
Delran NJ 08075 USA
@
/.
Datapro Reports on
Data Communications
(
Communications
Processors:
Market Overview
nodes is dwindling. Only 17 of the 42 products perform that function. All of the processors perform
protocol conversion.
IBM's System Network Architecture (SNA) is
the company's master plan for communication
with and among IBM computers, terminals, and
office systems. It is also the company's vehicle for
interconnection with other industry-standard networks, such as X.25. Without the ability to communicate with IBM equipment, a product starts its
life cycle at a disadvantage. Aware of the importance of penetrating the IBM world, vendors have
incorporated support for SNA into 31 of the 42
products included in the survey.
Open Systems Interconnection (OSI) emerged
in the late seventies as an attempt by the International Organization for Standardization (ISO) to
resolve compatibility issues. The OSI model for
open architecture consists of seven layers. Many
vendors have released products that conform to
OSI requirements. In the communications processor field, however, OSI conformity does not appear
to be a driving force. Of the 42 products in the survey, only 15 adhere to OSI specifications.
The X.25 Recommendation of the CCITT
was developed in response to the need for a standard interface between packet-switching networks.
The X.25 standard enables terminals and computers to be connected to public packet-switching networks. More than half of the communications
processors in the survey conform to X.25.
Vendor Strategies
C13-010-103
Processors
Figure 2.
Standards and Architectures
50
40
30
"IN;""""',.,.,.,.,.,.,.,
10
Bse
OSI
X.25
IBM 3745 Models 130, 150, and 170. These
models complete IBM's front-end processor line
at the low end. Model 130 accommodates four
4M bps or 16M bps Token-Ring interfaces, two
Tl lines, and four host-channel links. Model 150,
a remote line concentrator, supports 16 communications ports operating at speeds up to 256K bps,
two 4M bps or 16M bps Token-Ring interfaces,
and one Tl line. Model 170, a general-purpose
controller, supports up to 112 lines at speeds up
to 256K bps, two 4M bps or 16M bps Token-Ring
interfaces, and two T 1 lines.
Upgrades to 3745 Model 210 and Model 410.
IBM upgraded these high-end models by including
connections for up to 896 medium- and highspeed lines. IBM also added fractional T1 capabilities, line-interface and Token-Ring port swapping
capabilities, and PS/2 attachments.
Amdahl
NCR Com ten
In May 1989, Amdahl enhanced its 4745 front-end
communications processor with a software migration tool that allows users to run IBM networking
software releases on the 4745. The 4745 Model 210
and Model 110 can run IBM's Network Control
Program (NCP) Version 5 and Release 5.2.
Amdahl increased prices by 10 percent. The
4745-210 costs $132,000, and the 4745-110 with
NCP-5 costs $100,650.
NCR introduced new products and upgraded existing models.
Com ten 5655,5665, and 5676 Communications Processors. This new family of communications processors supports up to 24 Tllines, 1,024
full-duplex lines, 64 token-ring LANs, 16M bytes
of main storage, and 80M bytes of fixed disk storage. The systems support Net View and the following protocols: SDLC/SNA, LU6.2, BSC, X.25, and
X.21.
Com ten 16-Line Communications Base (16Line CB). Residing in the Comten 5660 and 3695
communications processors, the 16-Line CB enables field engineers to perform routine or emergency services on a single 16-line module without
IBM
In May 1989, IBM added three lower level models
to its 3745 communications controller product line
and enhanced the 3745 Models 210 and 410.
© 1990 McGraw-Hili, Incorporated. Reproduction Prohibited. Datapro Research.
Delran NJ 08075 USA
MAY 1990
C13-010-104
Processors
Communications
Processors;
Market Overview
Datapro Reports on
Data Communications
disrupting system operation. The 16-Line CB terminates up to 16 communications lines. The product consists of multiple processors that can handle
specific protocols or line speeds for cost-effective
line termination in mixed-protocol environments.
Based on complementary metal oxide semiconductor (CMOS) ASIC technology, the 16-Line CB requires less power and cooling features.
The base price for 16-Line CB is $7,035.
Comten Universal Communications Adapter
(UCA). NCR Comten endowed UCA, which also
resides in Comten 5660 and 3695 communications
processors, with expanded switching options. U sers can back up all or portions of their communications processors and attached communications
lines for increased network uptime. UCA users can
switch among multiple communications processors, thereby making full use of all their equipment. This switching flexibility offers benefits to
users because they do not have to pay for infrequently used backup systems. When backup is necessary, users can switch network traffic from the
system in trouble to active systems.
UCA concentrates data from NCR Comten
communications line termination equipment, such
as communications bases, and routes it through
input/output channels on one or more attached
NCR Comten processors. For maximum network
availability, each UCA supports data routing
through two online and two backup channel connections, thereby increasing users' options for data
routing during routine or emergency maintenance
and for load balancing during peak traffic periods.
UCA's aggregate throughput is 512K characters per
second.
The purchase price for UCA starts at
$21,000.
High Performance Feature (HPF) for Comten
5660. HPF provides 50 percent more processing
power for the Comten 5660 communications processor than 5660 models without the feature. The
processing power of the Comten 5660 with HPF
can lower network operating costs in some networks by allowing more users to join the existing
network without adding more communications
lines. In networks where the communications processor is operating at near capacity, HPF can reduce networking costs by eliminating the need for
additional communications processors, while allowing more throughput and improved response
time. HPF costs $60,000 for new Comten 5660
orders. A field-installed HPF upgrade for alreadyinstalled 5660s costs $75,000.
Advanced Communications Function/Network
Control Program (ACF/NCP) Version 5. NCR
Comten supports SNA networking through the
Comten Advanced Communications Functionl
Network Control Program (ACF/NCP), a network
routing and control software program residing in
NCR communications processors. In October
1989, the company expanded its SNA networking
capabilities with Version 5 of ACFINCP, which
expands support for distributed peer-to-peer networking that reduces host processing costs, produces value-added network statistics to assist in
lowering costs, and improves performance.
Through ACF/NCP Version 5's distributed
processing capability, users can access applications
in intelligent workstations or SNA hosts without
monopolizing host resources. ACF/NCP Version 5
enables Node Type (NT) 2.1 devices to use Logical
Unit (LU) 6.2 protocol to conduct peer-to-peer sessions over wide area SNA networks with minimal
host intervention. Users can initiate and collect
host-independent network statistics through the
NCR Comten console, Comten Support Facility,
or IBM's NetView.
A licensed software product residing in a
Comten 5620 or 56X5 communications processor,
ACF/NCP Version 5 is compatible with earlier
Comten communications processors and with previous ACF/NCP releases. Version 5 is functionally
compatible with, and provides features found in,
IBM's ACF/NCP Version 5 Release 1 and Release
2. Release 2 Version 5 debuted in second-quarter
1990.
Comten TCP/IP and Comten Ethernet LAN
Interface. Designed for communications processors, the software supports interoperability among
devices in SNA and TCP/IP networks, enabling
users to share communications lines and to interoperate among various software applications in the
network. By implementing these capabilities in a
multipurpose networking system, such as a communications processor, users can integrate their
existing SNA and TCP/IP networks into a single,
multipurpose network. The resulting TCP/IP/SNA
network provides two-way interoperability among
Ethernet LANs using TCP/IP and SNA devices.
Com ten Open Systems Interconnection/
Communications Processor (OSI/CP). This offering
MAY 1990
@
1990 McGraw-Hili, Incorporated. Reproduction Prohibited. Datapro Research.
Delran NJ 08075 USA
\
Datapro Reports on
Data Communications
(
Communications
Processors;
Market Overview
adds OSI software to the TCP/IP and SNA networking software for Comten communications
processors. OSIICP enables users with OSI desktop
applications, like file transfer and electronic mail,
to interoperate with each other over a wide area
network, independent of the mainframe. With the
addition of OSIICP software, Comten's 56X5 communications processors can form the backbone of a
multipurpose, wide area network that routes OSI,
TCP/IP, and SNA data traffic over a single network.
Unisys
Unisys introduced the DCP/5 into its Distributed
Communications Processors (DCP) Series. Designed for small sites, the DCP/5 supports up to
seven lines, as well as BSC, HDLC, UDLC, X.21,
and X.25. Unisys bundled the DCP/5 with its PW
Model 500 personal computer. The communications processor board ranges in price from $9,800
to $14,300.
Future Directions
As long as vendors prime their products for the
needs of the '90s, the communications processor
market will experience a steady, but not spectacular growth. As front-end processors, these machines
perform important tasks. As remote concentrators
1990 McGraw-Hili, Incorporated. Reproduction Prohibited. Datapro Research.
Delran NJ 08075 USA
@
C13-010-105
Processors
and nodes in networks, they perform functions that
are not about to become obsolete.
It is doubtful that many newcomers will arrive on the communications processor scene. Most
of the market belongs to IBM, NCR Comten, and
Amdahl. Taking on these giants is not likely to appeal to start-up companies, who would probably
prefer entering a more dynamic field with more
possibilities.
Most of the activity in the communications
processor field will come from the big three. Currently, NCR Comten and IBM appear to be sparring with each other for supremacy. At the time
NCR Comten released the 5655, 5665, and 5675,
IBM enhanced Models 210 and 410 of the 3745,
adding fractional Tl and Token-Ring port swapping capabilities, and increasing line attachments.
In the future, the two companies will continue battling for the greater share of the communications
processor market.
Amdahl appears to be banking on the ongoing
success of its 4745 communications processor. As
indicated by its announcement this year of a software migration tool enabling users to run IBM networking software releases on the 4745, Amdahl is
turning its attention to software and will pursue
this avenue more vigorously in the future .•
MAY 1990
C13-010-101
Processors
Communications Processors
Multifunctional products make it increasingly difficult to
pigeonhole equipment into specific categories. It used to be
simple: Devices converting signals from digital to analog
were modems, units combining data from many channels
onto one were multiplexers, and so forth. But integration is
now the goal of the communications industry, and manufacturers have begun to combine many functions in one
system. Modems incorporate multiplexing and/or protocol
conversion; terminals contain modem chips; and larger
systems integrate switching and multiplexing, as well as
providing gateways to other networks.
The definition of a communications processor varies
greatly, depending upon who is defining it. Different processors have different capabilities, and while network designers have one view of what a communications processor
does, equipment manufacturers have another. Everything
from an IBM 3745 to a four-port packet assembler/
disassembler (PAD) has been called a "communications
processor."
From a network designer's point of view, a communications processor should be capable of setting up connections
to transmit and receive data, multiplex and demultiplex
data, frame and unframe messages, perform error correction and protocol conversion, choose transmission routes,
and collect performance and traffic statistics. This designer's definition has led many manufacturers to classify their
protocol converters, PADs, terminal controllers, and stat
muxes as communications processors. They consider devices that connect terminals to communications networks
and maintain control through changing network conditions
"Communications processor" not only describes
a specific category of equipment. but also includes a broad array of systems that performs
communications processing functions and provides other services. Our definition of communications processors includes multifunctional.
intelligent systems that are dedicated to communications and can serve as nodes in the network.
These systems generally include three basic types
of products: front-end processors. intelligent
switches. and remote concentrators.
In addition to defining communications processing. this report discusses communications processor design. its place in modern network
architectures. the evolution of the communications processor. general advantages and restrictions of today's systems. and the state of the
communications processor marketplace.
This report also includes comparison columns outlining the major characteristics of communications processors from vendors.
PAGE
REPORT HIGHLIGHTS:
COMMUNICATIONS PROCESSORS
103
AND NETWORK ARCHITECTURES
107
ADVANTAGES AND RESTRICTIONS
THE CURRENT MARKETPLACE ........... . 107
Designed for large network users,
the NCR Comten 5660 Communications Processor is a powerful data
communications processor that of
fers high levels of network control,
processing capacity, and device support.
JULY 1989
COPYRIGHT © 1989 McGRAW-HILL. INCORPORATED. REPRODUCTION PROHIBITED
DA T APRO RESEARCH. DELRAN NJ 08075 USA
C13-010-102
Processors
Communications Processors
TABLE 1. COMMUNICATIONS PROCESSORS
FUNCTIONS
Physical transmission and reception of data
Data buffering and queuing
Multiplexing
Message framing and unframing
Control of transmission errors
Message sequencing
Protocol conversion
Message pacing and flow control
Message or packet assembly and disassembly
Route selection
Session· establishment and disconnection
Formatting of data for use by specific host or terminal
applications
Reporting and logging of device or transmission errors or
failures
Fallback switching in case of host, device, or transmission
line failure
Gather and record network performance and traffic
statistics
to be communications processors. While marketing departments develop effective advertisements around this concept, it clouds the definition of the equipment. Marketing
impact aside, an IBM 3745 and a protocol converter do not
belong in the same category.
Several years ago, in an attempt to narrow the field of devices that would be included in this survey, we placed
PADs and terminal controllers in a Protocol Conversion
Systems tab, which also included black-box protocol converters, terminal emulators, and code and speed converters. This was in keeping with our premise that true
communications processors, concentrators included, are
involved in a dynamic process involving feedback from
other intelligent devices in the network. Protocol converters, PADs, and statistical multiplexers perform basically
static processes that remain constant as network conditions
change. This year we have further refined our communications processor coverage by identifying equipment that is
clearly defined as packet switches and channel extenders
and moving them to separate tabs.
Datapro defines a communications processor asa multifunctional, intelligent device dedicated to communications
and serving as a control point, or node, in a data communications network. It serves as a front end to a mainframe, as
an intelligent switch, or as a remote concentrator. As a
front-end processor (FEP), the communications processor
serves as a peripheral device locally attached to one or
more large computers dedicated to applications processing,
relieving them of the overhead involved in message handling and network control. An intelligent switch routes
messages among the network's various end points and participates in the network's control and management, either
under the control of a master (usually front-end) processor
or as a peer of other intelligent switches. A concentrator
controls a community of terminals, clusters of terminals, or
distributed applications processors; gathers, queues, and
multiplexes their transmissions onto one or more high-
speed network trunks; and participates in the network's
control and management, again either under the direction
of a master processor or as a peer of other concentrators
and switches. (Table I lists the major functions of a communications processor in the typical network.)
The network designer's definition would qualify two devices as communications processors: the front-end processor and the network processor. While the front-end
processor connects directly to the host processor's block/
byte multiplexer or selector channels, the network processor is a standalone unit that is not host dependent and has a
large degree of operating autonomy. Its primary function is
to provide a link between user terminal devices and the
front-end processor and/or other network processors.
Communications with the FEP is on the data link level.
While the network processor does not carry on a dialog
with the FEP, it does respond to FEP-initiated network signals.
While the above definitions seem black and white, some
equipment still falls into a gray area. Packet switches, for
example, often fit quite nicely into our definition but we
cannot classify them only as communications processors.
We have concluded that communications processing must
actually be classified in terms of application and/or functionality.
We also recognize, however, that there is a small but important class of equipment that belongs to the traditional communications processing realm. This class includes IBM
372X/374X, NCR Comten, and Amdahl front-end processors. IBM controls a majority of this market, and only a
handful of vendors manufacture competing systems. Unisys also manufactures communications processors for .its
mainframes. Full product reports on these systems are Included within this tab.
Front-end processing is the most complex task a communications processor can perform. In a large, complex network
governed by one or more mainframe hosts, a front end
must do all but the last three functions listed in Table 1 in
the normal course of its operations.
Intelligent switching is slightly less complex, since the communications processor acting as a dedicated switch need
not carry on a running dialog with a host computer and is
not responsible for the end-to-end establishment and disconnection of sessions. Still, an intelligent switch, in normal operation, must perform all but the last five basic
functions in the table. An intelligent switch differs from a
simple switch, such as a port selection and contention device, because it must monitor the network's traffic and performance either under the control of a master processor
(usually ~ front end) or as a peer among other ~ntelligent
switches and concentrators. It must also change lts behavior, notably the routing and pacing of mess~ges, according
to theinformation it receives. A simple sWltch merely es-
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH, DELRAN NJ 08075 USA
JULY 1989
C13-010-103
Processors
Communications Processors
(
tablishes an information path according to instructions it
receives from a user or computer on one end of the connection.
Concentration is the least complex task a communications
processor performs, and communications processors acting
as concentrators are easily confused with less sophisticated,
single-function devices such as statistical multiplexers, protocol converters, PADs, and terminal cluster controllers.
Indeed, with the widespread use of microprocessors and the
declining cost of silicon intelligence, many devices at the
high ends of these lines are beginning to approach the functional breadth of true communications processors. The difference is that true communications processing,
concentration included, is a dynamic process involving
feedback from other intelligent devices in the network. Statistical multiplexing, protocol conversion, and packet
assembly/disassembly are basically static processes that do
not change as conditions change in the network.
An intelligent concentrator participates in the control of the
network, either under the direction of a master processor or
as a peer of other concentrators and switches, receiving status information from the network and changing its behavior accordingly. These changes include accelerating or
withholding transmissions, initiating diagnostic procedures for pathways and devices in its local domain, and
controlling access to the network from its locally attached
devices. Some sophisticated terminal controllers, notably
IBM's 31745, perform some or all of these functions.
A concentrator differs from a sophisticated terminal cluster
controller by its position in the network's hierarchy. A concentrator concentrates data from a number of cluster controllers, while a cluster controller concentrates data only
from a number of individual terminals. As an example,
consider the relative positions in an SNA network of an
IBM 3725 acting as a remote node (concentrator) and an
IBM 3174 within that concentrator's domain. A user builds
an entire network from intelligent concentrators communicating with one another as peers, but does not do the same
with cluster controllers.
COMMUNICATIONS PROCESSORS
AND NETWORK ARCHITECTURES
The implementation of network architectures is perhaps
the most important ongoing theme in the development of
data communications. In general, there are two kinds of
network architectures: those designed to provide communications among computers and terminals from a specific
vendor, and those designed to provide open communications regardless of the vendor of the communicating devices.
(
Mainframe vendor architectures include IBM's SNA, Honeywell's DSA, and Unisys' BNA and DCA. Open architectures include the CCITT X.25 packet-switching
JULY 1989
specification and several "transparent" network schemes
marketed by communications vendors. The communications processor is the most important element in both
vendor-specific and open architectures. In the following
paragraphs, we will use the International Organization for
Standardization (ISO) reference model for Open Systems
Interconnection (OSI) to examine the different roles that
communications processors play in different kinds of network architectures.
In network architectures designed by mainframe computer
vendors, the communications processor functions most often as a front end and controls communications in conjunction with one or more software systems in the host
computer. In general, the front-end processor handles the
Data Link through Session layers of the ISO model, with
host software implementing the Presentation and Application layers. The balance varies, depending on the architecture. In Unisys' DCA, the DCP-Series front end controls
many Presentation layer functions, while in IBM's SNA,
the host's access method (along with software residing in
the terminal controllers) handles communications down to
the Session layer, with the 37XX front end acting almost as
a channel-attached packet switch. The range of control assigned to front-end processors in other mainframe architectures varies between those extremes.
In all mainframe architectures, the same communications
processor models that serve as front ends also function as
intelligent switches and as remote concentrators. In these
functions, the communications processors usually appear
in smaller configurations than in the front-end role. Communications processors working in mainframe architecture
also perform intelligent gateway functions. In this application, the communications processor provides the interface
between the mainframe network and communications facilities outside the architecture, particularly public, packet
switched data networks using the X.25 protocols.
The function of a communications processor differs between the two kinds of open architectures. In a full-scale
open architecture such as X.25, the communications processor serves entirely as an intelligent packet switch, implementing the Data Link through Transport layers via a
uniform set of complementary protocols. Designed specifically for public data networks, X.25 protocols ultimately
establish virtual circuits, or logical paths through the network, for devices from any vendor. Communicating
devices-computers or terminals-at either end of the virtual circuit must handle the Session, Presentation, and Application layers according to their own protocols.
In a public network, the network provider is responsible for
network management. The X.25 communications processors in such a network, therefore, carry a heavy load of access, error, and class-of-service control, along with
provisions for statistically recording traffic and usage data
to be sorted by individual users. Communications processors designed to function as switches in public networks are
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
OAT APRO RESEARCH, DELRAN NJ 08075 USA
C13-010-104
Processors
Communications Processors
Front·end
Processor
f------i----I
Concentrator
Intelligent
Switch
Front-end
Processor
Concentrator
Intelligent
Switch
1-------,....,.--...,
Concentrator
Front-end
Processor
Figure 1. A communications processor can/unction as a/ront end/or one or more host computers, as an intelligent switching node not
attached directly to any applications equipment, or as a remote terminal concentrator.
the most likely to support high-capacity, attached storage
devices such as disk and tape drives.
Communications processors operating in full-scale X.25
configurations seldom perform a gateway function. The
user must provide compatibility with the network's standard protocols, either through an X.25 software package
that resides in a participating host or its front-end processor, or through a packet assembler/disassembler (PAD)
that handles the Physical and Data Link layers of the architecture. Table 2 shows the protocols supported by various
vendors' communications processors.
Transparent architectures are offered by vendors of communications equipment as a low-cost alternative to mainframe architectures and full-scale X.25 implementations.
These architectures are usually stripped-down versions of
X.25 without the network administration and c1assof-service overhead necessary to operate a public or very
large private network. In these architectures, the communications processor functions primarily as a switching concentrator, providing services at the Data Link, Network,
and Transport layers. Most such concentrators have
evolved at the high ends oflines of statistical multiplexers,
adding the crucial routing and flow control features that
qualify them as communications processors. Some of these
products offer integrated network management functions
such as error logging and performance statistics, but most
rely on a separate, complementary network management
system for these functions.
COMMUNICATIONS PROCESSOR
DESIGN
The basic design of almost all communications processors
follows the same three-tiered, hierarchical plan-a plan
that they share in common with their close cousins, the
digital PBXs, and more generally with a number of other
data communications components.
The device's central processing unit (CPU) sits at the top of
the hierarchy, along with its associated main memory. It
controls the communications processor's operation according to the rules and parameters of its operating software
and, in front-end configurations, in conjunction with instructions from the host computer. In general, the CPU performs the complex or dynamic tasks such as addressing,
route selection, protocol conversion, access control, session
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DA T APRO RESEARGH, ,DELRAN NJ 08075 USA
JULY 1989
C13-010-105
Processors
Communications Processors
Host
Computer
Host 1/0 }
Chennel
Control end
Meintenance
Penelor
L - _....... Console
~---.
Common Control
Comp0n8nts
Line B••es
Line Sets
J
1
I
I
Communications Unes
(-
Figure 2. The diagram shows the hierarchical, bus-based architecture of a typical communications processor. Such a processor can
contain more than one host interface, several I/O processors, and many line bases. Each line base serves communications lines of a
specific synchronization, speed, and protocol. Each line set serves lines with a specific, physical interface. The modular arrangement of
line bases and line sets on the processor bus allows easy configuration and reconfiguration.
establishment, application-level formatting, and error logging. It also delegates the rote operations to subsidiary components.
In most communications processors, some components
operating under the direction of the CPU perform general
functions involving the operation of the whole communications processor, while others perform functions dedicated to specific groups of lines. Among the former are the
host interfaces, the input/output (I/O) processors, the reference clock, and the operator interface. Among the latter are
the processor's line bases and line sets.
drives. In some cases, the I/O processors arbitrate among
the various line bases for access to main memory and to the
CPU, handling interrupts generated by the line bases or
host interfaces to gain the attention of the CPU, or controlling the line bases' and host interfaces' access to main memory. In communications processors with more than one I/O
processor, each I/O processor usually controls a set complement of storage units or communications lines.
The reference clock generates a timing signal used by all
other components of the communications processor. In
many systems, reference timing is a function of the CPU.
Some systems have separate reference clocks for timing signals at different data rates.
Communications processors configured as front ends must
have at least one host interface. The host interface handles
communications between the front-end processor and the
host's byte or block multiplexer, or selector channel. The
host interface buffers data from the front end's CPU, assembles it into parallel bit streams of a format specific to
the attached host channel, and transmits it up the channel
to the host. For data coming from the host, it performs the
same process in reverse. The host interface's principal function is to convert data from the communications processor's internal word size to that ofthe host computer.
The operator interface allows an operator to monitor and
control the communications processor and to run diagnostic tests. In newer and more sophisticated systems, the operator interface works under software control from a
dedicated console, which usually contains a CRT or similar
display unit and a printer for logging. In most communications processors, the operator interface works through a
front panel that contains a number of manual switches and
indicator lights.
Some communications processors contain one or more
input/output processors that transfer data between the
CPU and attached storage peripherals, such as disk or tape
All of the aforementioned devices perform functions that
are shared among all communications lines; they sit just
below the CPU in the communications processor's internal
JULY 1989
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
OAT APRO RESEARCH, DELRAN NJ 08075 USA
C13-010-106
Processors
Communications Processors
hierarchy. On the network side, the "business end" of a
communications processor, the line bases and line sets
complete the hierarchy.
A line base, sometimes called an attachment base, interface
base, or interface module, handles communications at the
Data Link layer between the communications processor
and a group of attached communications lines that shares a
common synchronization pattern, line speed, and (sometimes) protocol. Each line base usually contains a dedicated
microprocessor that performs such functions as framing
and stripping, message buffering, message sequencing, synchronization, and error detection under the direction of the
CPU. Most current communications processors accommodate from 8 to 32 line bases, each of which handles from 2
to 8 line sets.
A line set handles communications at the Physical layer
between its attached line base and from one to eight communications lines. All the communications lines attached
to a given line set must use the same physical interface at
roughly the same data rate. The line set handles serialization of data and interface-level control signaling.
All the components of the communications processor communicate with one another over a parallel data bus, usually
located along the backplane or a side plane of the processor's cabinet. The physical bus architecture, popularized by
minicomputer design, provides easy installation and replacement of parts. In a hierarchical architecture such as
that of most communications processors, the bus also
makes for easy reconfiguration. To replace asynchronous
communications over voice grade lines with HDLC communications over wideband or satellite circuits for a l6-line
segment of a network, a user might only need to replace one
line base and eight line sets, rather than swapping out an
entire front-end processor. The hierarchical design extends
the communications processor's functionality over time
and helps to protect the user's investment in the face of
changing technology. Figure 2 shows the hierarchical configuration of a generalized communications processor.
THE EVOLUTION OF THE
COMMUNICATIONS PROCESSOR
The communications processor as we currently know it was
born in the mid-1970s, the result of the merger of several
separate developments in both communications and data
processing. Its direct ancestors were hardwired communications controllers such as the IBM 270X and Sperry
Univac CCM, relatively unintelligent combinations of
large multiplexers and cabling concentrators designed to
perform only the basic, rote operations of communications
handling. These devices provided a physical map of the
network for the host, basically allowing it to find each physicalline in its logical polling sequence and perform simple
error notification.
Two developments in the late 1960s provided the technical
base for the modern communications processor: the minicomputer and the ARPAnet. The minicomputer provided
a small, relatively inexpensive, software-controlled machine that could perform a number offunctions more efficiently than a mainframe and supplied the bus architecture
that gives communications processors their modularity
and flexibility. ARPAnet, the first large-scale packet
switched data network, provided the fundamental design
principles for all current data communications architectures. One of these principles was the intelligent virtual circuit switch, the first functional communications processor.
A later development in minicomputer applications created
the distributed processor, a small computer dedicated to
part of a larger application that performed, as one of its
necessary functions, communications with its peers in a
distributed network. Distributed processing contributed
the idea of intelligent communications-handling under
software control. Indeed, network architectures from such
minicomputer vendors as Digital Equipment Corporation
and Hewlett-Packard are applications oflater communications developments onto the framework of distributed processing among minicomputers.
The lower cost of dedicated processing in small computers
and the higher cost of mainframe processing power made
the idea of a dedicated small computer to off-load intelligent communications-handling from the mainframe economically practical. The first intelligent front ends, such as
IBM's 3704, predate modern network architectures and, to
a large extent, made such architectures possible.
In the late 1970s, IBM's SNA and the ISO's OSI model, the
earliest general network architectures, advanced the idea of
data communications as an entirely separate function from
applications processing; they defined the network as a physical entity separate from its participating hosts and terminals. The best way to implement a physically separate
communications function is through a system of small
computers dedicated to communications. Such communications processors could be placed at the front end of the
mainframe, or could function independently as concentrators and switches within their respective architectures.
One further development produced the communications
processor as we know it today: the microprocessor. The advent of inexpensive silicon intelligence allowed designers to
implement the hierarchical scheme of the typical communications architecture in hardware, with dedicated microprocessors performing low-level functions and reporting to
larger, more complex processors at the higher levels. Indeed, some line bases in present-day communications processors are programmable, receiving downloads from the
units' CPU s that describe the protocol and synchronization
for each. Some newer systems comprise entirely redundant,
microprocessor-controlled modules that perform the functions of other modules, using the proper software load.
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DAT APRO RESEARCH, DELRAN NJ 08075 USA
JULY 1989
/
C13-010-107
Processors
Communications Processors
The advent of the microprocessor has blurred the distinction between traditional communications processors and
less broadly functional devices, such as multiplexers and
terminal controllers, creating a new class of intelligent protocol converters dedicated to tasks that were once economically performed by multifunctional communications
controllers. Now, even modems detect; report; and, in
some cases, correct transmission errors and sense the conditions of transmission lines. The old definition of a communications processor as a computer programmed to
perform one or more control and/or processing functions
in a data communications network now includes everything from modems and dedicated monitoring equipment
up to the IBM 3745.
In answer to this shifting definition, Datapro otTers Tab
C23, Volume 2, Protocol Conversion Systems; Tab C20,
Volume 2, Packet Switching Equipment; and Tab C14,
Volume 2, Channel Extenders, in Datapro Reports on Data
Communications. There, the reader will find information
on many product categories formerly covered in this report, including protocol converters, intelligent terminal
controllers (with conversion capabilities), PADs, packet
switches, and channel extenders.
ADVANTAGES AND RESTRICfIONS
The communications processor's principal advantage as a
networking tool is the physical and logical separation of the
networking function from the applications of its end users.
Whatever its architecture, such a network functions for any
application; grows in size without qualitative change to accommodate new applications; and accommodates new applications through the installation of relatively standard,
intelligent components. The user need not redesign and rebuild a modular network to change the network's ultimate
purpose.
Programmable, software-controlled communications processors are an especially handy tool in such standalone networks because they accommodate not only changes in
application but also the effects of technical progress. A
software-controlled communications processor with a good
design survives breakthroughs in networking technique
through relatively simple upgrades. The newer,
microprocessor-controlled line bases, and even line sets,
provide an even more flexible butTer against obsolescence.
In operation, a network controlled by communications
processors survives the total failure of one or more of its
host processors. In a multihost network, front-end processors switch users from applications in a failed host to similar or identical applications in a backup host, perhaps
elsewhere on the network. In a single-host network, a functioning front end allows service to degrade gracefully in the
event of a host failure, sometimes allowing users to terminate their tasks before total system failure, or allowing com-
JULY 1989
munications among distributed application processors in
the absence of the controlling host.
The communications processor still fulfills its original purpose: relieving the host of the overhead generated by keeping track of a network. Today's networks are orders of
magnitude more complex than those of the mid-1970s
when the first communications processors appeared.
Thanks to the declining cost of memory and processing
power, many of today's communications processors are
faster and more powerful than that era's mainframes.
Complexity and incompatibility are among the restrictions
oftoday's communications processors. In an environment
of user-friendly hardware and software, the communications processor remains a device with which only a trained
engineer should meddle. Most require programs written in
an arcane, Assembler-level language, sometimes (but not
always) with the benefit of pregenerated macros in the host
access method.
THE CURRENT MARKETPLACE
The market for full-scale communications processors can
be broken down into three segments: IBM and plugcompatible communications processors for the IBM mainframe environment; communications processors dedicated
to the mainframe architectures of vendors other than IBM;
and intelligent concentrators designed to serve in transparent network architectures.
IBM remains the leader in the communications processor
market in terms of market share. NCR Comten is second,
while Amdahl rounds out the Big Three of the FEP market.
The other mainframe vendors, such as U nisys and Bull HN
Informations Systems Inc., do not really compete with one
another in the communications processing marketplace.
Each features a line of communications processors dedicated to its network architecture, and each line of communications processors has its merits. Bull HN's Datanet 8
Series features a broad array of compatibility software,
while the U nisys D PC Series goes further than most in providing host-independent networking. A number of vendors
otTer intelligent concentrators, often at the high end of a
line of statistical multiplexers.
Competition among the Big Three vendors heated up in the
past year as IBM rolled out its 3745, now offered in five
models; NCR introduced an optional processor upgrade,
the High Performance Feature (HPF) for its 5660; and Amdahl enhanced and emphasized its position of high performance and competitive pricing, 10 percent to 15 percent
lower than IBM's. As these vendors vie for a larger chunk of
the high-end market, users might expect such enhancements and price reductions to continue.
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DA TAPRO RESEARCH, DELRAN NJ 08075 USA
C13-010-10B
Processors
Communications Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED
Manufacturer!
Product Name
ASCII
async!
Other
Bit·
Oriented
Protocols·
X.25
Packet
Level
Other Protocols Supported
DMI
TTY
IBM BSC
IBM
SOLC
Advanced Computer
Ves
Ves
Ves
HDLC
No
Amdahl
Ves
Ves
Ves
No
GTE Telenet.
Tymnet.Datapa<
Chi Corporation
Ves
Ves
No
Ves
Ves; host PAD
connector. terminal PAD connec
tion; DON. GET.
AT&T. Globenet
terminal protoco
detection for
NTR.2780.
3780. HASP.
REM1
-
TELNET (TCP/IP). automatic
Computerm Corporation
Ves (1052/2741
emulation)
Ves
Ves
No
No
No
Digital Communications
Computer Network
Technologies
Bull HN Info Systems
Datanet 8
Ves
Ves
Ves
Ves
Ves
Ves
-
Ves
No
--
Ves
Ves
No
Ves (HDLC)
GTE Telenet.
+ 10 DONs
VIP. PVE. RCI. LHDLC
/
IBM
3725
3745
Ves
Ves
Ves
Ves
Ves
Ves
No
No
GTE Telenet
GTE Telenet
Infotron
990NP Network Processor
892NP Network Processor
Ves
Ves
Ves
Ves
Ves
Ves
Ves
Ves
Ves
Passthru only
Virtually all are supported
Not applicable
Ves
Ves
Ves
Ves
No
Ves
No
RPQ
RPQ
RPQ
Request price quotation
Request price quotation
Ves
Ves
Ves
Ves
Ves. HPADs &
TPADS-VANs
include Accunet.
Datapac.
Datex-P. DDX.
DN1.ltapac.
Infonet. Luxpac.
PSS Telenet.
Transpac.
Tymnet
-
Lemcom Systems
CMC-4. CMC-8. & CMC-32
Distributed Network
Processor Series
NCR Comten
5620
*Other bit-orientsd protocols include AOCCP. HOLC. BOLC.
BfId
\.
-
-
UDLC.
COPYRIGHT © 1989 McGRAW-HILL. INCORPORATED. REPRODUCTION PROHIBITED
DA TAPRO RESEARCH. DELRAN NJ 08075 USA
JULY 1989
C13-010-109
Processors
Communications Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED (Continued)
Manufacturer/
Product Name
ASCII
async/
Other
Bit·
Oriented
Protocols'
TTY
IBM BSC
IBM
SOLC
3690
Yes
Yes
Yes
Yes
3695
Yes
Yes
Yes
Yes
5660
Yes
Yes
Yes
Yes
X.25
Packet
Level
Other Protocols Supported
Yes, HPADs
& TPADs includ
Accunet, Datapac, etc.
Yes, HPADs &
TPADs include
Accunet, Datapac, etc.
Yes, HPADS
& TPADsVANs include
Accunet, Datapac, Datex-P,
DDX,DN1,
Itapac, Infonet,
Luxpac. PSS
Telenet, Transpac, Tymnet
Telenet, Transpac, Tymnet
Telenet, Transpac, Tymnet
Netlink Inc.
Network SNA-Hub
No
No
Yes
No
No
Token Ring
NTX
Model 3800
-
No
No
No
No
NDLC (extended HDLC)
Peri phonics
VoicePac
VoiceBox
VoiceStar 40XX
VoiceStar 42XX
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Special
Special
Special
Special
order
order
order
order
Special order
No
No
Yes, host or
terminal PAD-
PARS
VoiceStar 46XX
Telenet, Infonet
Yes
Yes
Yes
Special order
Yes, host or
terminal PAD-
PARS
VoiceStar 47XX
Telenet, Infonet
Yes
Yes
Yes
Special order
Yes, host or
terminal PAD-
PARS
Yes
Yes
Yes
Yes
DTE, Tymnet,
Telenet, various
PTT
Yes
Yes
Yes
Yes
Yes, X.29 PAD
-
PARS
Telenet, Infonet
Unisys
CP2000
Unisys
DCP/15,OCP/40,
&. DCP/50
*Other bft-onented protocols Include ADCCP. HOLC. BOLC. and UOLC.
JULY 1989
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DA T APRO RESEARCH, DELRAN NJ 08075 USA
-
PARS. DON TELNET
C13-010-110
Processors
Communications Processors
THE COMPARISON COLUMNS
Following this report are comparison columns listing the
device specifications of many communications processing
systems. While compiling this report in January 1989,
Datapro sent requests to firms known or believed to manufacture communications processors. The absence of any
company from the columns means that the company either
failed to respond to our request by the deadline or chose not
to be listed.
The KEY TO THE COMMUNICATIONS PROCESSOR
COMPARISON COLUMNS provides a complete description of the comparison column entries.
KEY TO THE COMMUNICATIONS PROCESSOR COMPARISON COLUMNS
The comparison columns that follow this report list the major characteristics of 68 commercially available communications
processors. The text below explains the column entries, in order of their appearance.
COMMUNICATIONS SYSTEMS INTERFACED
Manufacturer/Model. For processors that serve IBM and
plug-compatible mainframe computers, we assume that
they. serve the entire, upward-compatible IBM line (IBM
370, 303X, 308X, and 43XX) along with the major plug
compatibles. For processors operating in open network
architectures, we list "Most major vendors."
Direct Attachment to Host. This is one indication ofwhether the device is a true front-end processor. Network processors do not connect directly to the host.
FUNCTIONAL CHARACTERISTICS
Front-End Processor. This entry indicates whether the processor in question can serve as a channel-attached front end
to a mainframe computer. The next two entries list the
maximum number of hosts that can be channel attached,
and the number of those hosts that can be active
simultaneously.
IBM Emulation. This entry lists the degree of IBM emulation the processor can perform.
Level of Data Unit Transferred Across I/O Channel. Communications processors configured as front ends transfer
data to and from the host through an I/O channel. The
width, in bits, of the I/O channel, coupled with the communications processor's main memory word size, yields the
level of data transferred (e.g., byte or block).
Type of Data Transfer Supported between Memory and
a) Communications Lines, b) Mass Storage, and c) Other
Peripherals. In some communications processors, only the
CPU has access to main memory, and other components,
such as line baSes and I/O processors, must interrupt the
CPU to read or write information in main memory. In
others, microprocessors in the subsidiary components
share control of main memory with the CPU and can read
and write memory on their own. The latter process is called
Direct Memory Access (DMA).
I/O, Backup, and Diagnostic Peripherals Supported. Most
communications processors interact only with their attached hosts and terminals and rely on host disk systems for
storage and on host software for detailed diagnostics. Some
newer models, however, support local disk storage for
control software, traffic, and support information and feature diagnostic consoles for direct operator intervention.
PU Type within Network. This entry indicates the PU
(physical unit) type found within the network.
Support for Remote Console. Some processors that support
local operators consoles can also support an operator's
console attached over communications lines.
Remote Line Concentrator. A "yes" for this entry indicates
whether the processor in question can serve as a line
concentrator remote from any host processor in its network. The next entry lists the number of hosts the concentrator can serve at one time.
Support X.2S Level 3 Capabilities. This entry indicates that
the processor supports X.25 capabilities.
Host-Independent Network Processor. This entry indicates
that the processor in question can control a network of open
architecture without the direction of a host computer.
Host Channel Extender. This entry indicates that the processor can function as a host channel extender within its
architecture.
Communications Operating Software:
Operating System Implemented in. This entry indicates
how the processor in question stores its control program:
wired directly and inflexibly into the hardware, in software
that must be loaded into memory from the outside, in
firmware (local read-only memory) on-board the processor,
or in some combination of these.
Terminal Controller. This entry indicates that the processor
in question can function as a terminal controller within its
architecture.
IPL Method. This entry indicates how the processor in
question receives its initial program load: from its host
processor, from a locally attached diskette activated by an
operator, or from on-board read-only memory.
Store-and-Forward Message-Switching Processor. This entry indicates that the processor in question can function as a
standalone, store-and-forward message switch.
Additional Software Supported. This entry lists any network control or applications software that the processor in
question can support.
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DA T APRO RESEARCH, DELRAN NJ 08075 USA
JULY 1989
C13-010-111
Processors
Communications Processors
KEY TO THE COMMUNICATIONS PROCESSOR COMPARISON COLUMNS (Continued)
User Programmability. This entry indicates the degree of
control users have over the control programs in the communications processor. Some are programmable in the
sense that users can select among a number of preset
configuration parameters, usually from a menu. Others are
fully programmable, usually through an Assembler-level
language. Mainframe front-end processors usually use a
subset of their hosts' access methods implemented in macros; other programmable communications processors use a
native Assembler language.
Software Separately Priced. This entry indicates whether
the communications processor's operating software is included in the cost of the hardware.
Approximate Proportion of Currently Installed Systems
Supplied as Turnkey Systems. A turnkey system is a system
with which the user need not participate in the configuration design; the user can simply "turn the key" and have a
working system. Conversely, a turnkey system is one for
which the user is denied the privilege of a custom
configuration.
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported. Some processors now offer
management functions, such as running diagnostic tests.
Examples include remote and local loopback, port/link
status, and internal diagnostics.
Data Collected. In gathering performance data, the processor can collect traffic statistics, line failures, error records,
etc.
PRICING AND AVAILABILITY
Entries under this header list purchase, lease (or rental) and
maintenance pricing, whether maintenance is bundled with
the lease or rental price, the product's date of first delivery,
the number of processors of that model the vendor has
installed to date, and the provider of service and maintenance for the product.
Vendor Phone Number. The vendor's phone number is
supplied at the bottom of each comparison column as a
courtesy to the reader.
Comments. Comments at the end of the columns describe
significant or unusual features, capabilities, or applications
that are not reflected in the standard entries.
Distributed Processing Node. Most true communications
processors cannot perform applications processing; however, some (including a few intelligent concentrators) can
support distributed applications in addition to their principal networking function. This class of communications
processor is growing more scarce.
Network Architecture Compliance. Some communications
processors function exclusively within their vendors' network architectures; others support open architectures such
as X.25. If a processor supports no network architecture, it
JULY 1989
may be a "transparent" device or it may support the
prearchitectural protocols of the vendor(s) whose hosts it
supports.
Communications Line Capacity. The first section of this
entry deals with the number of lines a communications
processor can support. The next entry lists the highest data
rate the processor can support. The last entry lists the effect
(if any) that converting all lines to full-duplex operation
would have on capacity. Where such a conversion has an
effect, it usually cuts the maximum in half.
COMMUNICATIONS FEATURES/FUNCTIONS
Entries under this heading list the major functions a communications processor performs, but that not all communications processors do perform.
Multiplexing/Demultiplexing. This entry indicates that the
processor in question can function as a multiplexer.
Terminal-Initiated Application Switching. This entry indicates that the processor in question supports the selection of
applications within a session between an attached terminal
and an attached host, at the terminal's request.
Communications Processor Initiated Dynamic Line Reconfiguration. Dynamic line configuration is another name for
fallback switching. This entry indicates that the processor
in question can switch without operator intervention a
session from a connection involving a failed line or communications processor component to a healthy connection
when it senses the failure.
Interface to Ethernet LAN. This entry indicates that the
processor offers an interface to an Ethernet LAN.
Protocol Conversion. The most common protocol conversion is from asynchronous ASCII to the synchronous trunk
protocol specified by a given architecture (e.g., IBM's BSC
or SDLC, or X.25's LAP-B). This entry specifies the types
of protocol conversion the processor in question can
perform.
Code Conversion. The most common code conversion is
from ASCII to IBM's EBCDIC. This entry indicates which
code conversions the processor in question can perform.
Error Control. This entry specifies which of the available
schemes for error detection (e.g., parity, LRC, or CRC) the
processor in question uses.
Automatic Transmission Speed Detection. If the processor
in question can sense the data rate of a given transmission
without intervention from the operator or user, this entry
lists the speeds it can sense.
Automatic Disconnect of Inactive Dial-Up Terminals.
Many communications processors can sense activity on
their attached terminals and disconnect a terminal session
ifit has been inactive for a specified period of time. A "yes"
for this entry indicates that the processor in question can do
so.
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DAT APRO RESEARCH, DELRAN NJ 08075 USA
C13-010-112
Processors
Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON COLUMNS (Continued)
SYSTEM CHARACTERISTICS
internal transmission path along its bus.
Processor Type. This entry lists the vendor and model of
the communications processor's CPU. Many communications processors use standard OEM microprocessors such
as the Z80 or the MC68000.
Main Memory Storage Capacity (bytes). This entry lists the
capacity of main memory in the communications processor
in question. Large main memory capacity is useful for
transmission with modem, high-speed protocols in which
large blocks of data must be stored for retransmission in
case of error. Abundant main memory is also useful for the
performance of a number of high-level functions on a
timeshared or interrupt basis.
Main Memory Word Size (bits). In most cases, the main
memory word size is also the width of the processor's
~
________________________________________________________________
~O
/
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH, DELRAN NJ 08075 USA
JULY 1989
C13-010-141
Processors
Communications Processor Vendors
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone
numbers of the vendors whose products are shown in the
comparison columns that follow this report.
Advanced Computer Communications
720 Santa Barbara Street
Santa Barbara, CA 93101 (805) 963-8801
Amdahl Communications
1250 E. Arques Avenue, MS 200
Sunnyvale, CA 94088 (408) 746-6000
Bull UN Information Systems Inc.
200 Smith Street
Waltham, MA 02154 (508) 671-6000, (800) 999-2181
Chi Corp.
26055 Emery Road
Cleveland, OH 44128 (216) 831-2622, (800) 828-0311
Computer Network Technology Corp.
9440 Science Center Drive
Minneapolis, MN 55428 (612) 420-4466
Computer Corp.
100 Wood Street
Pittsburgh, PA 15222 (412) 391-7804
Digital Communications Associates, Inc.
1000 Alderman Drive
Alpharetta, GA 30201 (404) 442-4000
JULY 1989
Infotron Systems Corp.
9 N. Olney Avenue
Cherry Hill, NJ 08003 (609) 424-9400
International Business Machines Corp. (IBM)
Old Orchard Road
Armonk, NY 10504
Contact your local IBM representative.
Lemcom Systems, Inc.
2104 W. Peoria Avenue
Phoenix, AZ 85029 (602) 944-1543
NCRComten
2700 Snelling Avenue North
St. Paul, MN 55113 (612) 638-7944
Netlink, Inc.
3214 Spring Forest Road
Raleigh, NC 27604 (919) 878-8612
NTX Communications Corp.
508 Tasman Drive
Sunnyvale, CA 94089 (408) 747-1444
Periphonics Corp.
4000 Veterans Highway
Bohemia, NY 11716 (516) 467-0500
Unisys Corp.
Post Office Box 500
Blue Bell, PA 19422 (215) 542-40110
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH, DELRAN NJ 08075 USA
C13-010-151
Processors
Communications Processors Comparison Columns
MANUFACTURER
Advanced Computer
Communications
Advanced Computer
Communications
Amdahl Communications
Amdahl Communications
ACP 5100
ACP 6640
Amdahl 4745-110
Amdahl 4745-210
MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
DEC MicroVAX II, MicroVAX
3000
DEC VAX
Yes
Yes
Yes
Not applicable
1
HDLC
Yes
Not applicable
1
Vendor did not specify
PU Type within Network
Vendor did not specify
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Messase Switching
Distributed Processing No e
Network Architecture Compliance
No
Not applicable
No
No
No
No
Yes
HDLC
Direct Attachment to Host
All IBM- and
Amdahl-compatible
mainframes
Yes
Yes
Vendor did not specify
Yes
4
2
270X/370X, EP, 370X/37X5.
NCP. SNA/SDLC
PU Type 4
Yes
8
6
270X/370X, EP, 370X/37X5,
NCP. SNA/SDLC
PU Type 4
Yes
1
No
No
Yes
No
No
DMIjISDN
Yes
NCP standard
No
No
No
No
No
SNA, BSC, OSI. X.25
Yes
NCP standard
No
No
No
No
No
SNA. BSC. OSI. X.25
All IBM- and
Amdahl-compatible
mainframes
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex lines Attachable
Vendor did not specify
Vendor did not specify
64
256
Tl (1.544M}
Vendor did not specify
T1 (1.544M)
Vendor did not specify
256K
None
256K
None
Protocol Conversion
No
No
No
No
Vendor did not specify
Yes
Yes
No
No
DMI
Yes
Yes
No
No
NCP standard
Yes
Yes
No
No
NCP standard
Hitest line Speed Supported (bps}
E ect on line Capacity. All lines Full
Duplex
COMMUNICATIONS FEATURES
MultiplexinQ/Demultiplexing
T erminal-lnotiated Applications Switching
Dynamic line Reconfiguration
Interface to Ethernet LAN
Code Conversion
None
Vendor did not specify
NCP standard
NCP standard
Error Control
Vendor did not specify
Vendor did not specify
Parity check wtetransmit
on error, LRC CRC
detection/correction,
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
Vendor did not specify
Vendor did not specify
Yes
Vendor did not specify
Parity check w/retransmit
on error, LRC & CRC
detection/correction.
parity
NCP standard & COMMPRO
Yes
Motorola 6800
Vendor did not specify
512K
Proprietary
32
4M
Byte. block
Both
Interrupt. block
Interrupt, floppy
FEP console, diskette,
disk, control panel
Proprietary
32
4M
Byte, block
Both
Interrupt, block
Interrupt, interrupt
FEP console, diskette,
disk, control panel
~arity
CP standard and Commpro
Yes
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits}
Main Memory Storage Capac~ (b't;1eS}
Data Unit Transferred Across /0 hannel
Data Support, Memory and Comm. lines
Mass Storage
Other Peripherals
I/O, Backup. and Diagnostic Peripherals
Supported
o~eA
Vendor did not specify
Vendor did not specify
Vendor did not specify
Motorola 6800
Vendor did not
1M
DMI
DMA
Vendor did not
Vendor did not
Vendor did not
Support for Remote Console
Support for X.25 Level 3 Capabilities
No
No
No
No
Yes
Yes
Yes
Yes
0fpra,:;~fh~rem Implemented in
Hardware
Vendor did not specify
Firmware
Intemal self-load
Software, firmware
Download from host, disk
load
Vendor did not specify
Software, firmware
Download from host, disk
load
Vendor did not specify
specify
specify
specify
specify
OPERATING SOFTWARE
Additional Software Supported
Vendor did not specify
Vendor did not specify
User Programmability
Yes. via user-selected
perameters
Yes, via user-selected
parameters
No
No
Software Separately Priced
All
Vendor did not specify
All, NCP from IBM
All
Local/remote loopback,
internal diagnostics
Vendor did not specify
Local/remote loopback,
internal diagnostics,
problem determination,
port/line status
Node/link/software status,
port statistics
Vendor did not specify
Traffic loadin~,
node/link/so ware status,
line outages/hits, port
rates, events, link
Idg.. NCP/Netview support
Local/remote loopback,
internal diagnostics,
problem determination,
port/line
status. NCP/NetView support
Traffic loadinfk.v
node/link/so
are status;
line outages/hits, port
stats., trace, error
rates, events, link
Idg., NCP/NetView support
Vendor did
91,500.00
294.00
Vendor did
Vendor did
May 1988
June 1988
Vendor did
Amdahl
Vendor did
12,000.00
310.00
Vendor did
Vendor did
May 1988
June 1988
Vendor did
Amdahl
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
Data. Collected
stat8.; trace, error
PRICING AND AVAILABILITY
Minimum Configuration
Purchase Price ($}
Monthly Maintenance ($}
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Delive"6
Number of Systems Installed to ate
Serviced by
(
Vendor did
4,200.00
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
not specify
not
not
not
not
not
not
not
specify
specify
specify
specify
specify
specify
specify
Vendor did
10,000.00
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
not specify
not
not
not
not
not
not
not
VENDOR PHONE NUMBER
(805) 963-8801
(805} 963-8801
COMMENTS
-
-
JULY 1989
COPYRIGHT
@
specify
specify
specify
specify
specify
specify
specify
not specify
not specify
not specify
not specify
not specify
not specify
not specify
not specify
(408} 746-6000
(408} 746-6000
Runs both NCP-4 for 3725
and NCP-5 for 3745; backup
architecture part of base
~~~S~~ f8gradeable to
Runs both NCP-4 for 3275
and NCP-5 for 3745; backup
architecture part of basic
design
1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DA TAPRO RESEARCH, DELRAN NJ 08075 USA
C13-010-152
Processors
Communications Processors Comparison Columns
MANUFACTURER
Bull HN Information Systems Bull HN Information Systems Bull HN Information Systems Bull HN Information Systems
MODEL
DATANET 8/05 DPS 7000
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
Bull DPS 7000
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
DATANET 8/10
DATANET 8/20
DATANET 8/30
Yes
Bull DPS7, DPS7000, DPS8,
DPS8ooo, DPS88, DPS90,
DPS9000
Yes
DPS7, DPS7ooo, DPS8,DPS88, Bull DPS7, DPS7000, DPS8,
DPS90, DPS8ooo, DPS9000
DPS8000, DPS88,DPS90,
DPS9000
Yes
Yes
Yes
1
1
370X/37X5, NCP
Yes
lor 2
lor 2
370X/37X5, NCP
Ves
4
4
370X/37X5,NCP
Yes
4
4
370X/37X5, NCP
PU Type 5,DSA node/FE to
host
No
1000
No
No
Ves
No
No
BSC, OSI, X.25, DSA
DSA node
PU Type 2, PU Type 4, DSA
node
Yes
1000
Yes
No
Yes
No
No
SNA, BSC, OSI, X.25, DSA
PU Type 2, PU Type 4, DSA
node
Yes
1000
Yes
No
Yes
No
No
SNA, BSC, OSI, X.25, DSA
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable
15
31
127
127
Hmhest Line Speed Supported (bps)
E ect on Line Capacity, All Lines Full
Duplex
64K
Load dependent. protocol
dependent
64K
Load dependent, protocol
dependent
2.5M
Load/protocol
dependent
2.50M
Load dependent, protocol
dependent
COMMUNICATIONS FEATURES
MultiplexinQ/Demultiplexinll
Terminal-Initiated ApplicatIons Switching
Dynamic Line Reconfiruration
Imerface to Ethernet AN
Protocol Conversion
Yes
Yes
Ves
No
Async, VIP, DSC, RCI
Yes
Yes
Yes
No
Async, VIP, DSC, RSI
Ves
Yes
Yes
No
SDLC to X.25
PU Type within Network
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independem Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
Ves
1000
Yes
No
Yes
No
No
BSC, OSI, DSA
Code Conversion
ASCII to EBCDIC
ASCII to EBCDIC
ASCII to E8CDIC
Yes
Yes
Yes
No
SDLC to X.25, async, VIP,
BSC, RCI
ASCII to EBCDIC
Error Control
Parity check wlretransmit
on error, LRC CRC
detection/correction,
parity
300 to 96oo
Ves
Parity check w/retransmit
on error, LRC & CRC
detection/correction,
Parity check w /retransmit
on error, LRC & CRC
detection/correction,
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
Parity check w /retransmit
on error, LRC & CRC
detection/correction,
parity
300 to 4600
Yes
~&~o 9600
~~g~o 96oo
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits)
Main Memory Storage Capacity (bytes)
Data Unit Transferred Across I/O Channel
Data Support, Memory and Comm. Lines
Mass Storage
Other Peripherals
I/O, Backup, and Diagnostic Peripherals
Supported
Proprietary
16
2M
Word, 36 bit
Both
Vendor did not specify
DMA
FEP console,
diskette, host/mainframe
Proprietary
16
2M
Word (36 bit)
DMA, interrupt, both
Vendor did not specify
DMA
FEP console, host/
mainframe
Proprietary
16
2M
Word (36 bit)
Both
Not applicable
DMA
FEP console,
diskette, host/mainframe
Proprietary
16
2M
Word (36 bit)
DMA, interrupt, both
Vendor did not specify
DMA
FEP console,
diskette, host/mainframe
Support for Remote Console
Support for X.25 Level 3 Capabilities
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Software, firmware
Additional Software Supported
Download from host, IPL
diskette, tele-Ioad
Vendor did not specify
Software, firmware
Download from
host, tele-Ioad
Vendor did not specify
Software, firmware
Download from host, IPL
diskette, tele-Ioad
Vendor did not specify
Software, firmware
Download from host, IPL
diskette, tele-Ioad
Vendor did not specify
User Programmability
No
No
No
No
Software Separately Priced
All
All
All
All
Local/remote loopback,
internal diagnostics,
problem determination,
port/line status, network
management
Traffic 10adinK'
node/link/so ware status,
accounting, line outages,
port statistics, trece,
error rates, events, link.
loading
Local/remote loopback,
internal diagnostics,
problem determination,
pon/line status, network
Local/remote loopback,
Local/remote loopback,
Vendor did not specify
12,000.00
150.00
Vendor did not specify
Vendor did not specify
Aprillg87
September 1987
32
Bull Worldwide Info Sys
Vendor did not specify
33,890.00
244.00
1,160.00
No
September 1985
September 1985
58
Bull Worldwide Info Sys
OPERATING SOFTWARE
0fp'1ratin1/, System Implemented in
PL met od
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration
Purchase Price ($)
Monthly Maintenance ($)
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Delive1>
Number of Systems Installed to ate
Serviced by
management
Traffic 10adinK'
node/link/so ware status,
accounting, line outages,
port statistics, trace,
error rates, events, link
loading
Yes
Yes
internal diagnostics,
intemal diagnostics,
problem determination,
port/line status, network
management
Traffic 10adinK'
node/link/so ware status,
accounting, line outages,
pon statistics, trace,
loading
problem determination,
port/line status, network
management
Traffic loading,
node/link/software status,
accounting, line outages,
port statistics, trace,
error rates, events, link
loading
Vendor did not specify
47,990.00
329.00
1,640.00
No
September 1985
September 1985
167
Bull Worldwide Info Sys
Vendor did not specify
47,990.00
329.00
1,640.00
No
September 1985
September 1985
167
Bull Worldwide Info Sys
error rates. events. link
VENDOR PHONE NUMBER
(508) 671-6000
(508) 671-6000
(602) 862-8000
(508) 671-6000
COMMENTS
-
-
-
-
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH, DELRAN NJ 08075 USA
JULY 19B9
C13-010-153
Processors
Communications Processors Comparison Columns
MANUFACTURER
MODEL
Chi Corp.
Computer Network
Technology Corp.
Computer Corp.
Digital Communications
Associates, Inc.
3205/3212
CHANNELIink 5000
3800/3890
DCA/Series 300
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
Unisys 1100 series
Direct Attachment to Host
Yes
IBM S/370 & compat., Cray
Supercomputers, DEC/V AX-BI
Bus
Yes
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
Yes
2
2
None
Yes
B/unit
255/network
CTCA
Yes
4
4
Not applicable
PU Type within Network
PU Type 2
Channel attached
Not applicable
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
Yes
Unlimited
Yes
No
Yes
No
No
OSI, X.25
Yes
255
Yes
Yes
Vendor did not specify
Yes
Vendor did not specify
TCP/IP
Yes
4
Yes
Yes
No
No
No
Transparent
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable
IBM S/370, 43XX, 30XX &
compatibles
Most vendors
Yes
Yes
No
Vendor did not specify
Vendor did not specify
3270 BSC,
SNA/SDLC, 27BO/3780/HASP
PU Type 2
Yes
114
Yes
Vendor did not specify
Yes
No
No
SNA, DECnet, BSC, OSI,
X.25,802.3
24
16
8 full-duplex
114
64K
None
4.0M
None
1.544M
None
72K
None
Yes
Yes
Yes
Yes
Async to uniscope
Yes
No
Yes
Yes
Yes
No
Yes
No
No
No
Code Conversion
ASCII/EBCDIC/XS3
None
None
Error Control
LRC & CRC
detection/correction
LRC & CRC
detection/correction
detection/correction
Yes
Yes
Yes
Yes
Async to 3270 BSC, SDLC to
X.25, async to X.25
ASCII to EBCDIC, Baudot to
ASCII
Parity check w /retransmit
on error, LRC & CRC
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
110-19.2K
Yes
Up to 4.0M
No
No
No
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits)
Main Memory Storage Capacity (bytes)
Data Unit Transferred Across I/O Channel
Data Support, Memory and Comm. Lines
Mass Storage
Other Peripherals
I/O, Backup, and Diagnostic Peripherals
Supported
Concurrent computer 3205
32
8M
Byte
80th
Both
Both
FEP console, diskette,
patch panel
MC68020
32
10M
Block
DMA
Vendor did not specify
Vendor did not specify
FEP console
Z80B, IBM Series/1
16
512K
Byte, block
DMA
None
DMA
FEP console, diskette
Support for Remote Console
Support for X.25 Level 3 Capabilities
Yes
Yes
Yes
No
Yes
No
Z80B, MC68010
8
512K,'
Byte, file, block
Both
Both
Both
FEP console, diskette,
disk, magnetic tape,
printer
Yes
Yes
Software, firmware
Download from host, IPL
diskette
Development, communications
Firmware
Internal self-load
Software, firmware
Internal self-load, IPL
diskette
Vendor did not specify
Software
Download from host, IPL
diskette, hard disk
Vendor did not specify
Yes, via user-selected
parameters
Yes, via user-selected
parameters
Hw,hest Line Speed Supported (bps)
E ect on Line Capacity, All Lines Full
Duplex
COMMUNICATIONS FEATURES
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Dynamic Line Reconfiguration
Interface to Ethernet LAN
Protocol Conversion
OPERATING SOFTWARE
Operating System Implemented in
IPL method
Additional Software Supported
User Programmability
Software Separately Priced
Vendor did not specify
LRC & CRC
detection/correction,
parity, ARQ-CRC
300 to 19.2K
Yes
Yes, via console
Yes, via user-selected
programs, and via
console
Some
parameters, user-created
Some
Some
None
Local/remote loopback,
internal diagnostics,
port/line status
Local/remote loopback,
internal diagnostics.
problem determination,
port/line status
Internal diagnostics
Local/remote loopback,
internal diagnostics,
problem determination,
port/line status
Node/link/software status,
line outages, port
statistics, trace. line
hits, error rates
Traffic loading,
node/link/software status,
line outages, port
statistics, trace. line
hits, error rates, events.
link loading
Traffic loading, line
outages, trace, line hits,
error rates. data
display /rt monitor
Traffic loading,
node/link/software status,
accounting. line outages,
port statistics. trace,
line hits, error rates.
events, link loading
PRICING AND AVAILABILITY
Minimum Configuration
Purchase Price ($)
Monthly Maintenance ($)
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Delivery
Number of Systems Installed to Date
Serviced by
Vendor did not specify
35,000.00
300.00
Vendor did not specify
No
Vendor did not specify
1985
Vendor did not specify
Chi Corporation
Vendor did not specify
38,000.00
Vendor did not specify
Vendor did not specify
Yes
March 1987
January 1987
100
Computer Network Tech
Vendor did not specify
73,000.00
613.00
Vendor did not specify
No
Vendor did not specify
December 1982
380
Computerm, IBM
Vendor
Vendor
Vendor
Vendor
Yes
1979
1979
1,000
DCA
VENDOR PHONE NUMBER
(216) 831-2622
(612) 420-4466
(412) 391-7804
(404) 442-4000
COMMENTS
Pre~onfi~red, dynamic
Network support for remote
peripherals
Channel extension support
for printers, CRTs, check
sorters, mag tape, & front
ends w / satellite efficient
protocols
'512K per processor,
maximum 24 processors;
TCP /IP support, OSI network
management, DCA/DNMS
compatible
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
Data Collected
routing. async screen
editors, auto term. prot.
detect., redund., multi.
loc./rem. hosts, VTS
emul., VTS on X.25 ntwk
JULY 1989
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DATA PRO RESEARCH, DELRAN NJ 08075 USA
did
did
did
did
not
not
not
not
specify
specify
specify
specify
C13-010-154
Processors
Communications Processors Comparison Columns
MANUFACTURER
Infotron Systems Corp.
Infotron Systems Corp.
International Business
Machines Corp. (IBM)
International Business
Machines Corp. (IBM)
892NP
990NP 990NP/992NP
IBM 3270
IBM 3725
MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
Not applicable
Not applicable
IBM 43XX, 303X. 308X, 309X IBM S/370 (except models
115 & 125), 303X
Direct Attachment to Host
No
No
Ves
Ves
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
No
None
None
None
No
None
Over 10
3270 BSC
Ves
4
4
Ves
Ves
8
8
270X/370X
PU Type within Network
None
None
Vendor did not specify
Vendor did not specify
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
Ves
2
Ves
No
No
No
Ves
Proprietary
Ves
Over 10
Ves
No
No
No
Ves
Proprietary
Ves
4
No
No
No
No
No
SNA
Ves
8
No
No
No
No
No
SNA
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex lines Attachable
104 channels
640
28
256 with expansion
64K
None
64K
None
64K
None
256K (L1C Type 4B)
None
COMMUNICATIONS FEATURES
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Dynamic Line Reconfiguration
Interface to Ethernet LAN
Protocol Conversion
Ves
Ves
Ves
No
No
Ves
Ves
Ves
No
No
Ves
No
Ves
No
Ves
Ves
No
Ves
No
Ves
Code Conversion
None
None
Ves
Ves
Error Control
ARQ-CRC
Vendor did not specify
LRC & CRC
detection/correction
LRC & CRC
detection/correction
Highest Line Speed Supported (bps)
Effect on Line Capacity, All Lines Full
Duplex
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
110 to 9600
Ves
To 9600
Ves
Ves, via optional software
No
Ves, via optional software
No
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits)
Main Memory Storage Capacity (bytes)
Data Unit Transferred Across I/O Channel
Data Support, Memory and Comm. Lines
Mass Storage
Other Peripherals
110, Backup, and Diagnostic Peripherals
Supported
6502,80186
Not applicable
Not applicable
Not applicable
DMA, interrupt
Not applicable
Not applicable
FEP console, network manager
6502,8086,80186
Vendor did not specify
Vendor did not specify
Vendor did not specify
DMA, interrupt
Vendor did not specify
Vendor did not specify
FEP console, diskette
Proprietary
18
1M, expandable to 2M
Block
DMA
DMA
DMA
FEP console
Proprietary
18
3M
Block
DMA
DMA
DMA
FEP console
Support for Remote Console
Support for X.25 level 3 Capabilities
Ves
No
Yes
Ves
Ves
Ves
Ves
Ves
O~r~~ih;Jstem Implemented in
Firmware
Internal self-load
Software, firmware
EEPROM
Software
Internal self-load
Software
Internal self-load
OPERATING SOFTWARE
Additional Software Supported
Vendor did not specify
Not applicable
User Programmability
Yes, via console
Yes, via console
ACF/NCP, NTO, NPSI, NRF,
NPDA, ACF/TCAM
Ves
NCCF, NPDA, ACF/NCP-PEP,
EP/3725
Ves
Software Separately Priced
Some
Some
All
All
Local/remote loopback,
problem determination
Ves
Ves
Vendor did not specify
Traffic loading, line
Ves
Ves
Vendor did not specify
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration
Purchase Price ($)
Monthly Maintenance ($)
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Delivery
Number of Systems Installed to Date
Serviced by
outages, trace, error
rates, events
Vendor did not
11,000.00
Vendor did not
Vendor did not
No
Vendor did not
October 1984
30
Infotron
specify
specify
specify
specify
Vendor did
20,000.00
Vendor did
Vendor did
No
Vendor did
1984
6,000
Infotron
not specify
not specify
not specify
not specify
Vendor
Vendor
Vendor
Vendor
No
Vendor
1986
did
did
did
did
not
not
not
not
specify
specify
specify
specify
did not specify
~~dor did not specify
Vendor
Vendor
Vendor
Vendor
No
Vendor
1983
Vendor
IBM
did
did
did
did
not
not
not
not
specify
specify
specify
specify
did not specify
did not specify
VENDOR PHONE NUMBER
(609) 424-9400
(609) 424-9400
(914) 765-1900
(914) 765-1900
COMMENTS
8 nodes per network;
ANM-8oo network manager
optional; multiple links up
to 64K, auto alternate
Provides adaptive routing;
comprehensive network
management features; bisync
Contact local IBM rep.
Contact local IBM rep.
routing
async/BSC/SDLC support
emulation and
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DAT APRO RESEARCH, DELRAN NJ 08075 USA
JULY 1989
C13-010-155
Processors
Communications Processors Comparison Columns
(
MANUFACTURER
MODEL
COMPUTER SVSTEMS INTERFACED
Manufacturer/Models
International Business
Machines Corp. (IBM)
International Business
Machines Corp. (IBM)
Lemcom Systems, Inc.
Lemcom Systems, Inc.
IBM 3745 130/150/170
IBM 3745 210/410
Communications Micro
Controller 32
Communications Micro
Controller 4
IBM 43XX, 937X, 308X, 3090 IBM S/370, 43XX, 937X,
3033,308X, 3080
IBM S/360, S/370, 30XX,
43XX, & compat.
IBM S/360, S/370, 30XX,
43XX, & compat.
Diract Attachment to Host
Ves
Ves
Ves
Ves
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Suppo"ed Simultaneously
IBM Emulation
Ves
4
Vendor did not specify
Ves
Ves
16
8
Ves
Ves
1
1
270X/370X, EP
PU Type within Network
Vendor did not specify
Vendor did not specify
Not applicable
Ves
1
1
270X/370X, EP,
370X/37X5, custom
Not applicable
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Tarminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
Ves
Vendor did not specify
No
No
No
No
No
SNA
Ves
Unlimited
No
No
No
No
No
SNA, X.25
No
Not applicable
No
No
No
No
No
Not applicable
No
Not applicable
No
No
No
No
No
Not applicable
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable
Vendor did not specify
512
8
4
Vendor did not specify
None
1.544M
None
57.6K
None
57.6K
None
COMMUNICATIONS FEATURES
Multiplexinlj/Demultiplexing
T erminai-lnltiated Applications Switching
Dynemic Line RecOnfi~ation
Interface to Ethernet
N
Protocol Conversion
Ves
No
Ves
No
Ves
Ves
No
Ves
No
Ves
No
No
No
No
Custom
No
No
No
No
No
Code Conversion
Ves
Ves
ASCII to EBCDIC
ASCII to EBCDIC
Error Control
LRC & CRC
detection/correction
LRC & CRC
detection/correction
Parity check w /retransmit
Parity check w /retransmit
on error
on error
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
Ves
No
Vendor did not specify
Vendor did not specify
Ves
Ves
Ves
Ves
SVSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits)
Main Memory Storage CapaCity, (b~es)
Deta Unit Transferred Across /0 hannel
Date SUPPO", Memory and Comm. Lines
Mass Storage
Other Peripherals
I/O, Backup, and Diagnostic Peripherals
Suppo"ed
Proprietary
18
Vendor did not specify
Block
DMA
DMA
DMA
FEP console
Proprietary
Vendor did not specify
8M (perCCU)
Block
DMA
DMA
DMA
Vendor did not specify
Motorola 6800
8
80K
Byte, block
Interrupt
None
None
FEP console
Motorola 6800
8
40K
Byte, block
Interrupt
None
None
FEP console
SUPPO" for Remote Console
Suppo" for X.25 Level 3 Capabilities
Ves
Ves
Ves
Ves
Ves
No
Ves
No
Software
Internal self-load
Software
Internal self-load
Firmware
Internal self-load
Firmware
Internal self-load
Additional Software Suppo"ed
Vendor did not specify
Problem determination aids
Ves
ACF/NCP V%, EP, NTO,
ACF/VTAM, Netview
Ves
Problem determination aids
User Programmability
Ves, via user-selected
parameters
Yes, via user-selected
parameters
H#Jhest Line Speed Suppo"ed (bps)
E eet on Line Capacity, All Unes Full
Duplex
OPERATING SOFTWARE
0fptn:::~'f.:Jstem Implemented in
Software Separately Priced
All
All
Utilities only
Utilities only
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Suppo"ed
Ves
Ves
Local/remote loopback,
internal diagnostics,
problem determination
Local/remote loopback,
internal diagnostics,
problem determination
Data Collected
Yes
Ves
Trace
Trace
PRICING AND AVAILABILITY
Minimum COnfi~uration
Purchase Price $)
Monthly Maintenance ($)
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Dete of First Commercial Delive'b
Number of Systems Installed to ate
Serviced by
Vendor
Vendor
Vendor
Vendor
No
1989
1989
Vendor
IBM
Vendor did not specify
10,000.00
Vendor did not specify
Vendor did not specify
No
Vendor did not specify
November 1980
75
National Advanced Sys.
Vendor did not
9,000.00
Vendor did not
Vendor did not
No
Vendor did not
March 1977
VENDOR PHONE NUMBER
(914) 765-1900
(914) 765-1900
(602) 944-1543
(602) 944-1543
COMMENTS
Contact local IBM rep.
Contact local IBM rep.
Microprocessor-directed
FEP; front-end polling and
console SUPPO" available;
OEM discounts
Micr0e,rocessor-directed
JULY 1989
did
did
did
did
not
not
not
not
specify
specify
specify
specify
did not specify
Vendor did not
Vendor did not
Vendor did not
Vendor did not
No
Vendor did not
March 1988
Vendor did not
IBM
specify
specify
specify
specify
specify
specify
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH, DELRAN NJ 08075 USA
specify
specify
specify
specify
400
National Advanced Sys.
FEP; ront-end pollin~ and
console suppa" avai able;
OEM discounts
C13-010-156
Processors
Communications Processors Comparison Columns
MANUFACTURER
Lamcom Systems, Inc.
Lamcom Systems, Inc.
NCR Comten
NCR Comlen
MODEL
Communicatlona Micro
Controller a
Distributed Network
Processor Series
Model 5620
Model 5655
\
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
IBM 5/360, 5/370, 30XX,
43XX, & compat.
Vendor did not specify
IBM 360/370, 303X, NCR
8500/8600,308X, 43XX
IBM 360/370, 303X, 308X,
43XX, & compat.
Direct Attachment to Host
Yes
Yes
Yes
Yes
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
Yes
1
1
270X/370X, EP, custom
Yes
2
2
270X/370X, EP. 370X1:,37X5,
NCP, 3270 BSC, SNA/ DLC
PU Type 4
Yes
8
8
270X/370X, EP, 370X1:,37X5,
NCP, 3270 BSC, SNA/ DLC
PU Type 4
Yes
Vendor did not specify
No
Yes
Yes
No
Yes
SNA, BSC, OSI, X.25
PU Type within Network
Not applicable
Yes
32
32
270X/370X, EP, 370X/37X5,
SN'¥,SDLC, 370X BSC
PU ype 2
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
No
Not applicable
No
No
No
No
No
Not applicable
Yes
32
Yes
Yes
Yes
Yes
No
SNA, OSI. internal
Yes
Vendor did not specify
No
Yes
Yes
No
Yes
SNA, BSC, OSI. X.25
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable
8
3,000
64
512
57.6K
None
64K
Load dependent
T1 or token ring
Load dependent
T 1 or token ring
Load dependent
Protocol Conversion
No
No
No
No
Custom
Yes
Yes
Yes
No
Yes
Yes
Yes
No
ASCII to EBCDIC
to 3270 BSC, SDLC to
X. 5, async to X.25
ASCII to EBCDIC
As~nc
Code Conversion
Yes
Yes
Yes
Vendor did not specify
AS't:,nc to 3270 BSC,
BS /SDLC,SDLe/BSC
ASCII to EBCDIC
to 3270 BSC, SDLC to
X. 5, async to X.25
ASCII to EBCDIC
Error Control
Parity check w!retransmit
on error
LRC &CRC
detection/correction,
parity
LRC & CRC
detection/correction
LRC & CRC
detection/correction
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
Yes
Yes
110 to 19.2K
Yes
300 to 19.2K
No
300 to 19.2K
No
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits)
Main Memory Storage Capacity, (bytes)
Data Unit Transferred Across /0 Channel
Data Support, Memory and Comm. Lines
Mass Storage
Other Peripherals
I/O, Backup, and Diagnostic Peripherals
Supported
Motorola 6800
8
80K
Byte, block
Interrupt
None
None
FEP console
Motorola 6809E
8
15M
Byte, block
Both
Both, bubble
Vendor did not specify
FEP console, patch
penel, bubble memory
~~prietary
4M
Block
DMA, interrupt
DMA
DMA
FEP console, diskette,
disk, printer
Proprietary
32
8M
Block
DMA, interrupt
DMA
DMA
FEP console, diskette,
disk, printer
Support for Remote Console
Support for X.25 Level 3 Capabilities
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Firmware
Internal self-load
Software, firmware
Manual load, internal
self-load, bubble
Vendor did not specify
Software
Download from host, disk
Software
Download from host,disk
Hitest Line Speed Supported (bps)
E ect on Line Capacity, All Lines Full
Duplex
COMMUNICATIONS FEATURES
Multiplexin!!/Demultiplexinll
T erminal-lnotiated ApplicatIons Switching
Pn~~~::'~; ~~nM:~~:tfi~~~tion
OPERATING SOFTWARE
01~l~~1I.~rem Implemented in
As~nc
Additional Software Supported
Problem determination aids
Vendor did not specify
Vendor did not specify
User Programmability
Yes, via user-selected
parameters
Yes, via user-selected
parameters and via
console
Yes, via user-selected
parameters
Yes, via user-selected
parameters
Software Separately Priced
Utilities only
All
Some
Some
Local/remote loopback,
internal diagnostics,
problem determination
Local/remote loopback,
internal diagnostics
Local/remote loopback,
internal diagnostics,
problem determination,
port/line status
Local/remote loopback,
internal diagnostics,
problem determination,
port/line status
Trace
Traffic loadin'!; line
outages, line its, error
rates, events, link loading
Traffic loadin~
node/link/so are status,
Traffic loadin~,
node/link/so ware status,
line outages, port
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration
Purchase Price ($)
Monthly Maintenance ($)
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Delive'll
Number of Systems Installed to ate
Serviced by
Vendor did not specify
10,000.00
Vendor did not specify
Vendor did not specify
No
Vendor did not specify
November 1gaO
75
National Advanced Sys.
Vendor did not specify
15,000.00
Vendor did not specify
Vendor did not specify
No
Vendor did not specify
March 1981
725
National Advanced Sys.
line outages, port
statistics, trace, line
hits, error rates, events,
statistics. trace. line
hits, error rates, events.
link loading, none
link loading, none
Vendor
Vendor
Vendor
Vendor
Vendor
Vendor did not
Vendor did not
Vendor did not
Vendor did not
Vendor did not
March 1989
March 1989
Vendor did not
NCR Comten
did
did
did
did
did
not
not
not
not
not
~~~~'r9~~89
specify
specify
specify
specify
specify
Vendor did not specify
NCR Comten
specify
specify
specify
specify
specify
specify
VENDOR PHONE NUMBER
(602) 944-1543
(602) 944-1543
(612) 638-7944
(612) 638-7944
COMMENTS
Microcrocessor-directed
FEP; ont-end pOllin~ and
console support avai able;
OEM discounts
Dist. MPU FEP; up to 256
MPUs prog. to do various
comm. proc. functions,
front-end polling
Field upgradeable processor
performance; T1, token ring
and host connectivity can
be expanded in field;
prices range from $122,100
to $254,000
Field upgradeable processor
performance; T1, token ring
and host connectivity can
be expanded in field;
prices range from $122,100
to $254,000
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DAT APRO RESEARCH, DELRAN NJ 08075 USA
JULY 1989
C13-010-157
Processors
Communications Processors Comparison Columns
MANUFACTURER
NCR Comten
NCR Comtan
Netlink, Incorporated
NTX Communications Corp.
MODEL
Modal 5665
Modal 5675
N_kSNA-Hub
NTX 3800 Modal 2 Sarles
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
IBM 360/370. 303X. 308X.
43XX. and compatibles
IBM 360/370. 303X, 308X,
43XX. and compatibles
Most vendors
IBM 3090. 308X. PCM
Ves
Ves
No
Yes
Ves
16
16
270X/370X, EP. 370X/37X5,
NCP, 3270 BSC. SNA/SDLC
PU Type 4
No
Not applicable
Not applicable
Not applicable
Ves
4
2
CTCA
PU Type within Network
Ves
8
8
270X/370X. EP. 370X~37X5,
NCP. 3270 BSC. SNA/ DLC
PU Type 4
PU Type 5
Vendor did not specify
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
Ves
Vendor did not specify
No
Ves
Yes
No
Yes
SNA, BSC. OSlo X.25
Ves
Vendor did not specify
No
Ves
Ves
No
Ves
SNA, BSC, OSlo X.25
Ves
18
Ves
No
Ves
No
Ves
SNA
No
Vendor did not specify
No
No
No
No
No
Vendor did not specify
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable
1024
1024
16
8
Line Speed Supported (bps)
E ect on Line Capacity, All Lines Full
Duplex
T 1 or token ring
Load dependent
n
or token ring
Load dependent
64K
None
Vendor did not specify
Capacity halved
COMMUNICATIONS FEATURES
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Dynamic Line Reconfiguration
Interface to Ethernet LAN
Protocol Conversion
Ves
Ves
Ves
No
As~nc to 3270 BSC. SDLC to
X. 5. async to X.25
ASCII to EBCDIC
Ves
Ves
Ves
No
Async to 3270 BSC. SDLC to
X.25. async to X.25
ASCII to EBCDIC
Ves
Ves
Yes
No
No
Ves
No
No
No
No
None
None
Error Control
LRC & CRC
detection/correction
LRC & CRC
detection/correction
Vendor did not specify
ARQ-CRC
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
300 to 19.2K
No
300 to 19.2K
No
No
No
No
No
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits)
Main Memory Storage CapaCity, (b~eS)
Data Unit Transferred Across /0 hannel
Data Support. Memory and Comm. Lines
Mass Storage
Other Peripherals
I/O. Backup. and Diagnostic Peripherals
Supported
Proprietary
32
16M
Block
DMA, interrupt
DMA
DMA
FEP console, diskette,
disk, printer
Proprietary
32
16M
Block
DMA. interrupt
DMA
DMA
FEP console, diskette.
disk. printer
Intel
16
1M to 3M
Not applicable
DMA, interrupt
Not applicable
Not applicable
Not applicable
Proprietary
72
Vendor did not specify
Block
Both
Vendor did not specify
Vendor did not specify
FEP console
Support for Remote Console
Support for X.25 Level 3 Capabilities
Ves
Ves
Ves
Ves
Yes
No
Ves
No
OPERATING SOFTWARE
O{;.eratin~ SJstem Implemented in
L met 0
Software
Download from host. disk
Software
Download from host. disk
Software
Download from host
Internal self-load
Additional Software Supported
Vendor did not specify
Vendor did not specify
Netlink Subnetwork. CNM
User Programmability
Yes, via user·selected
Configuration parameters
No
parameters
Ves. via user-selected
parameters
Some
Some
Some
Some
Local/remote loopback.
Local/remote loopback.
ROM/RAM-based. NPDA'
Local/remote loopback,
internal diagnostics.
problem determination.
port/line status
Traffic loadinlk line
outages. line its, error
rates, link loading
H~hest
Code Conversion
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
internal diagnostics,
internal diagnostics,
problem determination.
port/line status
problem determination.
port/line status
Traffic loadi~
node/link/s
are status,
line outages. port
Node/link/software status.
line outages. error rates.
link loading. none
Traffic 10adinR'
node/link/so ware status,
line outages. port
statistics. trace. line
hits. error rates. events.
link loading. none
Vendor did not
Vendor did not
Vendor did not
Vendor did not
Vendor did not
March 1989
March 1989
Vendor did not
NCR Comten
Vendor did not
Vendor did not
Vendor did not
Vendor did not
Vendor did not
March 1989
March 1989
Vendor did not
NCR Comten
Vendor did
14,000.00
Vendor did
Vendor did
No
Vendor did
1987
Vendor did
Netlink
statistics, trace, line
hits, error rates, events,
PRICING AND AVAILABILITY
Minimum Confi uration
Purchase Price $)
Monthly Maintenance ($)
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Delive'b
Number of Systems Installed to ate
Serviced by
1
Vendor did not specify
NetView extensions
Software Separately Priced
Data COllected
Hardware, firmware
specify
specify
specify
specify
specify
specify
specify
specify
specify
specify
specify
specify
events
not specify
not specify
not specify
not specify
not specify
Vendor did
65.000.00
440.00
Vendor did
Vendor did
1986
1986
Vendor did
NTX
not specify
not specify
not specify
not specify
VENDOR PHONE NUMBER
(612) 638-7944
(612) 638-7944
(919) 878-8612
(408) 747-1444
COMMENTS
Field uP9radeabie processor
performance; n. token ring
and host connectivity can
be expanded in field;
prices range from $122.100
to $254.000
Field upgradeable processor
performance; n, token ring
and host connectivity can
be expanded in field;
prices ra~from $122.100
to $254.
'NetView. Netmaster; SNA
concent./router to IBM
hosts or hosts supp. SNA;
routing by user; interface
IBM token ring; supports
SNA over async links
-
JULY 1989
COPYRIGHT © 1989 McGRAW-HILL. INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH, DELRAN NJ 08075 USA
C13-010-158
Processors
Communications Processors Comparison Columns
MANUFACTURER
Pariphonics Corporation
Pariphonics Corporation
Unlsys Corp.
Unisys Corp.
VPS 3000/5000
VPS 7000/9000
Unisys CP2000
Unisys DCP/15
MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
Most major vendors
Direct Attachment to Host
Yes
Yes
Yes
Yes
No
4
4
270X/370X, 370X&37X5,
3270 BSC, SNA/S LC
PU Type 2
Yes
25
25
Yes
PU Type within Network
No
2
2
270X/370X.370X&37X5,
3270 BSC, SNA/S LC
PU Type 2
Yes
1 enc./2 cabinet
1 enc.~ cabinet
3270
C, SNA/SDLC, 3270
SNA, 3780 BSC
PU Type 2, PU Type 4, T.5
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
Yes
2
Yes
Yes
Yes
No
Yes
SNA. BSC, async TTY
Yes
4
Yes
Yes
Yes
No
Yes
SNA, BSC, async
Yes
Unlimited
No
Vendor did not specify
Yes
No
Yes
SNA, X.25, BNA
Yes
Any host in network
Yes
No
No
Yes
No
SNA, BSC, OSI, X.25, DON,
X.21, PDN
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable
32
64 (70001, 48 (90001
24
48 as FEP
9600
Minor
9600
Minor
64K
None
10M/LAN, 64K/V.35
None
Yes
Yes
Yes
No
Async to 3270 BSC
Yes
Yes
Yes
No.
Async to 3270 BSC
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Async to uniscope. 3270/uni.
uni/3270
ASCII to EBCDIC
Most major vendors
un~s Series 110. Series
A Series
22
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
H#Jhest Line Speed Supported (bpsl
E ect on Line Capacity. All Lines Full
Duplex
COMMUNICATIONS FEATURES
MultiplexinQ/Demultiplexin\l
Terminal-Initiated Applications Switching
Dynamic Line Reconfi~ation
Interface to Ethernet
N
Protocol Conversion
PU Type 2, PU Type 5
Code Conversion
ASCII to EBCDIC
ASCII to "BCDIC
Yes
Error Control
Vendor did not specify
Vendor did not specify
Vendor did not specify
LRC & CRC
detection/correction,
parity, ARQ-CRC
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
Yes
Yes
Yes
Yes
Yes
Yes
110 to 1800
Yes
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bitsl
Main Memory Storage Capacity (bytesl
Data Unit Transferred Across I/O Channel
Data Support, Memory and Comm. Lines
Mass Storage
Other Peripherals
I/O, Backup, and Diagnostic Peripherals
Supported
Intel 286
16
16M
Byte
Interrupt
Interrupt
Interrupt
Diskette, magnetic tape
Motorola 6800
32
8M sys., 32M vc.
Byte
Interrupt
Interrupt
Interrupt
Diskette
Multiprocessor
16
2M
Byte
DMA
Vendor did not specify
Vendor did not specify
Disk
Unisys DCP/40
16
6M
Block
DMA
DMA
DMA
FEP console. diskette,
patch panel, disk, printer
Support for Remote Console
Support for X.25 Level 3 Capabilities
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
OPERATING SOFTWARE
Operating System Implemented in
IPL method
Proprietary software
Internal self-load
Firmware
IPL diskette
Additional Software Supported
Peritalk, Dave. Param
Proprietary software
Download from host,
internal self-load
VRAM
Software, firmware
Download from host. IPL
diskette
Vendor did not specify
User Programmability
Yes, via user-selected
parameters, user-created
programs, and via
console
All
No
Yes. via user-created
programs
Software Separately Priced
Yes, via user-selected
parameters, via
console, voice dig., basic
edit
All
All
All
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
Internal diagnostics
Local/remote loopback,
internal diagnostics.
problem determination,
port/line status
Vendor did not specify
Local/remote loopback,
internal diagnostics,
problem determination,
port/line status
Traffic loadin~,
node/link/so ware status,
line outages, port
statistics, error rates.
events
Traffic loadi~.
node/link/s ware status,
line outages, port
statistiCS, error rates,
events
Vendor did not specify
Traffic loadin'!; line
outages, line its, error
PRICING AND AVAILABILITY
Minimum Confj~uration
Purchase Price $1
Monthly Maintenance ($1
Monthly Lease/rental ($1
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Delivery
Number of Systems Installet1 to Date
Serviced by
Vendor did not
Vendor did not
Vendor did not
Vendor did not
No
1988
1988
25
Periphonics
Vendor did not
Vendor did not
Vendor did not
Vendor did not
No
1987
1987
25
Periphonics
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
Vendor did
1986
Vendor did
Unisys
VENDOR PHONE NUMBER
(5161467-0500
(5161467-0500
(2151542-4011
(2151542-4011
COMMENTS
VPS3000 des. for Audiotex
applications for ·voice
bulletin boards'; VPS5000
incl. interf. for inter.
vee. resp./ Audiotex
appl.; priced $20K-$70K
Screen emUlation,
appl. gen. w/COBOLlike commands; VPS
9000 sup~orts T1 lines;
priced $4 K-$125K; maint.
IS pctg. of purch. pre.
-
-
Data Collected
specify
specify
specify
specify
specify
specify
specify
specify
Vendor did not specify
,/
rates, events
not
not
not
not
not
not
specify
specify
specify
specify
specify
specify
not specify
COPYRIGHT © 1989 McGRAW-HILL. INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH. DELRAN NJ 08075 USA
Vendor did not specify
28,585.00
76.00
720.00
No
April 1987
~ggdor did not specify
Unisys
/'
JULY 1989
/
C13-010-159
Processors
Communications Processors Comparison Columns
MANUFACTURER
MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturer/Models
Unisys Corp.
Unisys Corp.
Unisys Corp.
Unisys Corp.
Unisys DCP/30
Unisys DCP/40
Unisys DCP/5
Unlsys DCP/50
Unisys 1100 Series, 2200
Series, Series 80
~2~~s Series 1100, Series
Unisys 1100 Saries, 2200
Series, System 80
Unisys Series 1100, Series
2200, System 80
Yes
Yes
No
Yes
Yes
6
6
3270 BSC, SNA/SDLC, 3270
SNA, 3780 BSC
PU Type 2, PU Type 4,
PU Type 5
Yes
Any host in network
Yes
No
No
Yes
No
SNA, BSC, OSI, X.25, DDN,
X.21, PDN
Yes
16
16
3270 BSC, SNA/SDLC,3270
SNA, 3780 BSC
PU Type 2, T.4, T.5
No
Not applicable
Not applicable
3270 BSC, SNA/SDLC, 3270
SNA, 3780 BSC
PU Type 2, PU Type 4,
PU Type 5
Yes
Any host in network
Yes
No
No
Yes
No
X.25
Yes
32
16
3270 BSC, SNA/SDLC, 3270
SNA, 3780 BSC
PU Type 2, T.4, T.5
160
1,000
7
876
64K/V .35, 250K/coax
None
10M/LAN,64K/V.35
None
19.2K (async, sync)
None
64K/V.35, 250K/coax
None
Code Conversion
Yes
Yes
Yes
Yes
As~nc to uniscope, UTS/3270, Async to uniscope, 3270/uni,
32 O/UTS
uni/3270
ASCII to EBCDIC
ASCII to EBCDIC
Yes
Yes
Yes
No
Async to uniscope, 3270 to
UTS
ASCII to EBCDIC
Yes
Yes
Yes
Yes
Async to uniscope, uni/3270,
3270/uni
ASCII to EBCDIC
Error Control
LRC & CRC
LRC & CRC
parity, A Q-CRC
parity, A Q-CRC
detection~correction,
LRC & CRC
detection/correction,
ARQ-CRC
LRC & CRC
detection/correction,
parity, ARQ-CRC
Automatic Transmission Speed Detection
Auto. Disconnect of Inactive Terminals
110 to 1800
Yes
110 to 1800
Yes
110to 1800
Yes
110 to 1800
Yes
SYSTEM CHARACTERISTICS
Processor Type
Main Memory Word Size (bits)
Main Memory Storage Capacity (b~eS)
Data Unit Transferred Across I/O hannel
Data Support, Memory and Comm. Lines
Mass Storage
Other Peripherals
I/O, Backup, and Diagnostic Peripherals
Supported
Unisys DCP/30
16
4M
Block
DMA
DMA
DMA
FEP console, diskette,
patch panel, disk, printer
Unisys DCP / 40
16
6M
Block
DMA
DMA
DMA
FEP console, diskette,
disk, printer
Unisys DCP/15
16
2M
Not applicable
DMA
DMA
DMA
Diskette, disk,
site console
Unisys DCP/50
16
8M
Block
DMA
DMA
DMA
FEP console, diskette,
patch panel, disk, printer
Support for Remote Console
Support for X.25 Level 3 Capabilities
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Software, firmware
Download from host, IPL
diskette
Vendor did not specify
Software, firmware
Download from host, IPL
diskette
Vendor did not specify
Software
Download from host, IPL
diskette
Vendor did not specify
Software, firmware
Download from host, IPL
diskette
Vendor did not specify
Yes, via user-created
programs
Yes, via user-created
programs
Yes, via user-created
programs
Yes, via user-created
Software Separately Priced
All
All
All
All
NETWORK MANAGEMENT/CONTROL
Diagnostic Tests Supported
Local/remote loopback,
Local/remote loopback,
Local/remote loopback,
Local/remote loopback,
internal diagnostics,
internal diagnostics,
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. Hosts attachable to FEP
Max. Hosts Supported Simultaneously
IBM Emulation
PU Type within Network
Remote Line Concentrator
Max. Hosts Served by One Concentrator
Host-independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching
Distributed Processing Node
Network Architecture Compliance
COMMUNICATIONS LINE CAPACITY
No. Half-Duplex Lines Attachable
HJ?hest Line Speed Supported (bps)
E ect on Line Capacity, All Lines Full
Duplex
COMMUNICATIONS FEATURES
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Dynamic Line Reconfiguretion
Interface to Ethernet LAN
Protocol Conversion
Additional Software Supported
User Programmability
Data Collected
PRICING AND AVAILABILITY
Minimum Confi~uration
Purchase Price $)
Monthly Maintenance ($)
Monthly Lease/rental ($)
Maintenance Bundled with Lease/rental
Date of Announcement
Date of First Commercial Dalivery
Number of Systems Installed to Date
Serviced by
No
Yes
Yes
Yes
detection~correction,
OPERATING SOFTWARE
Operetin1/, SJstem Implemented in
IPL met 0
Yes
Any host in network
Yes
No
No
Yes
No
SNA, BSC, OSI, X.25, DON,
X.21, PDN
Yes
Any host in network
Yes
No
No
Yes
No
SNA, BSC, OSI, X.25, DON,
X.21, PDN
programs
internal diagnostics,
internal diagnostics,
problem determination
problem determination
problem determination
Traffic loading, port
statistics, trace, line
Traffic loading, line
outages, port statistics,
trace, error rates
Traffic loading, line
outages, port statistics,
trace, line hits, error
rates, events
Traffic loading, trace,
hits, error rates, events
Vendor did not specify
99,000.00
235.00
2,300.00
No
October 1988
Octobar 1988
90
Unisys
Vendor did not specify
10,815.00
585.00
2,319.00
No
January 1980
Vendor did not specify
3,500
Unisys
Vendor did not
11,800.00
72.00
Vendor did not
No
March 1989
Vendor did not
Vendor did not
Unisys
Vendor did not specify
255,395.00
634.00
5,629.00
No
December 1987
Vendor did not specify
200
Unisys
specify
specify
specify
specify
problem determination
line hits, events
VENDOR PHONE NUMBER
(215) 542-4011
(215) 542-4011
(215) 542-4011
(215) 542-4011
COMMENTS
-
-
-
-
JULY 1989
COPYRIGHT © 1989 McGRAW-HILL, INCORPORATED. REPRODUCTION PROHIBITED
DATAPRO RESEARCH, DELRAN NJ 08075 USA
•
C13-010-101
Processors
Communications Processors
Until recently, it was fairly easy to group data communications equipment into specific categories according to
their basic functions. Devices that convert digital signals
into analog ones are modems, units that combine data
from many channels onto one channel are multiplexers,
and so forth. Integration is the byword of the communications industry, and manufacturers have begun to combine
many functionalities in one system. Modems incorporate
multiplexing and/or protocol conversion, terminals contain modem chips, and larger systems integrate switching
and multiplexing, as well as providing gateways to other
networks. It is becoming more difficult to pigeonhole
these new integrated devices into the basic communications equipment categories.
The definition of a communications processor varies
greatly, depending upon who is giving it. They perform
many functions, but different processors have different
capabilities. While network designers have one view of
what a communications processor does, equipment manufacturers have another. Everything from an IBM 3725 to
a four-port packet assembler/disassembler (PAD) has
been called a "communications processor."
From a network designer's point of view, a communications processor should be able to set up connections to
transmit and receive data, multiplex and demultiplex
data, frame and unframe messages, perform error correction and protocol conversion, choose transmission routes,
and collect performance and traffic statistics. This definition has led many manufacturers to classify their protocol
converters, PADs, terminal controllers, and stat muxes as
The term "communications processor" not only
describes a specific category of equipment. but
also includes a broad array of systems that perform communications processing functions in addition to providing other services. Our definition
of communications processors includes multifunctional. intelligent systems that are dedicated
to communications and able to serve as nodes in
the network. This generally includes three basic
types of products: front-end processors. intelligent switches. and remote concentrators.
In addition to defining communications processing. this report discusses communications processor design. its place in modern network
architectures. the evolution of the communications processor. general advantages and restrictions of today's systems. and the state of the
communications processor marketplace.
This report also includes comparison columns
outlining the major characteristics of 68 communications processors from 26 vendors.
REPORT HIGHLIGHTS
PAGE
COMMUNICATIONS PROCESSORS
AND NETWORK ARCHITECTURES
103
ADVANTAGES AND RESTRICTIONS .. 107
CURRENT MARKETPLACE ................ . 107
VENDORS ......................................... . 111
The modular Comten 5620XP can
be configured in a variety of ways:
from the left, a typical 16-line
remote configuration, a 32-line
channel-connected configuration,
and a 64-line channel-connected
configuration.
APRIL 1988
© 1988 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010"102
Processors
Communications Processors
TABLE 1. COMMUNICATIONS PROCESSORS
FUNCTIONS
Physical trl;lnsmission and reception of data
Data buffering and queueing
Multiplexing
Message framing and unframing
Control of transmission errors
Message sequenCing
Protocol conversion
Message pacing and flow control
Message or packet assembly and disassembly
Route selection
Session establishment and disconnection
Formatting of data for use by specific host or terminal
applications
Reporting and logging of device or transmission errors or
failures
Fallback switching in case of host. device. or transmission
line failure
Gather and record network performance and traffic
statistics
*Other bit-oriented protocols include ADCCP, HOLC, BOLC, and VOLC.
communications processors. They consider devices that
connect. terminals to communications networks and
maintain control through changing network conditions
are communications processors. While marketing departments can develop good ads with this designation, it is
problematic in terms of defining equipment. It is simply
ridiculous to put an IBM 3725 and, a protocol converter in
the same equipment category.
Several years ago, in an attempt to narrow the field of
devices that would be included in this survey, we placed
PADs and terminal controllers in a Protocol Conversion
Systems tab, which also included black-box protocol converters, terminal emulators, and code and speed converters. This was in keeping with our premise that true
communications processors, concentrators included, are
involved in a dynamic process involving feedback from
other intelligent devices in the network. Protocol converters, PADs, and statistical multiplexers perform basically
static processes that remain constant as network conditions change.
Datapro defines a communications processor as a multifunctional, intelligent device dedicated to communications and able to serve as a control point, or node, in a
data communications network. It can serve as a front end
to a mainframe, as an intelligent switch, or as a remote
concentrator. As a front-end processor (FEP), the communications processor serves as a peripheral device locally
attached to one or more large computers dedicated to
applications processing, relieving them of the overhead
involved in message hand,ling and network control. An
intelligent switch routes messages ampng the network's
various end points and participates in the network's control and management, either under the control of a master
(usually front-end) processor or as a peer of other intelligent switches. A concentrator controls a community of
© 1988 DATAPRO
terminals, clusters of terminals, or distributed applications processors; gathers, queues, and multiplexes their
transmissions onto one or more high-speed network
trunks; and participates in the network's control and management, again either under the direction of a master
processor or as a Peer of other concentrators and switches.
(Table. 1 lists the major functions of a communications
processor. in the typical network.)
The network designer's definition would qualify two devices as communications processors: the front-end processor and the network processor. While the front-end
processor connects directly to the host processor's block/
byte multiplexer or selector channels, the network processor is a standalone unit that is not host dependent and has
a large degree of operating autonomy. its primary function
is to provide a link between user terminal devices and the
front-end processor and/or other network processors.
Communications with the FEP is on the data link level.
While it does not carry on a dialog with the FEP, it does
respond to FEP-initiated network signals.
While the above definitions are sound, we are finding that
describing certain devices as communications processors
is still problematic. Packet switches, for example, often fit
quite nicely into our definition, but we cannot classify
them only as comm processors. We have concluded that
one must actually classify comm processing in terms of
application and/or functionality. If a system performs
many of the functions normally considered part of the
communications processing function, it can be classified
as a comm processor.
We also recognize, however, that there is a small but
important class of equipment that belongs to the traditional communications processing realm. This includes
IBM 372X and NCR Comten front-end processors. IBM
controls a majority of this market, and there are only a
handful of vendors that manufacture competing systems.
Unisys also manufactures communications processors for
its mainframes. Full product reports on these systems are
included within this tab. Front·end processing is the most
complex task a communications processor can perform.
In a large, complex network governed by one or more
mainframe hosts, a front end must do all but the last three
functions listed in Table 1 in the normal course of its
operations.
Intelligent switching is slightly less complex, since the
communications processor acting as a dedicated switch
need not carry on a running dialog with a host computer
and is not responsible for the end-to-end establishment
and disconnection of sessions. Still, an intelligent switch,
in normal operation, must perform all but the last five
basic functions in the table. An intelligent switch differs
from a simple switch, such as a port selection and contention device, because it must monitor the network's traffic
and performance, either under the control of a master
processor (usually a front end) or as a peer among other
R~S~ARCH CORPORATION. D~lRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRil 1988
C13-010-103
Processors
Communications Processors
intelligent switches and concentrators. It must also change
its behavior, notably the routing and pacing of messages,
according to the information it receives. A simple switch
establishes an information path according to instructions
it receives from a user or computer on one end of the
connection.
Concentration is the least complex task a communications
processor can perform, and communications processors
acting as concentrators can easily be confused with less
sophisticated, single-function devices such as statistical
multiplexers, protocol converters, PADs, and terminal
cluster controllers. Indeed, with the widespread use of
microprocessors and the declining cost of silicon intelligence, many devices at the high ends of these lines are
beginning to approach the functional breadth of true communications processors. The difference is that true communications processing, concentration included, is a
dynamic process involving feedback from other intelligent
devices in the network. Statistical multiplexing, protocol
conversion, and packet assembly/disassembly are basically static processes that do not change as conditions
change on the network.
An intelligent concentrator participates in the control of
the network, either under the direction of a master processor or as a peer of other concentrators and switches, receiving status information from the network and changing
its behavior accordingly: accelerating or withholding
transmissions, initiating diagnostic procedures for pathways and devices in its local domain, and controlling
access to the network from its locally attached devices.
Some sophisticated terminal controllers, notably IBM's
3274s, can perform some or all of these functions. A
concentrator differs from a sophisticated terminal cluster
controller by its position in the network's hierarchy: a
concentrator can concentrate data from a number of cluster controllers, while a cluster controller concentrates data
only from a number of individual terminals. As an example, consider the relative positions in an SNA network of
an IBM 3705 acting as a remote node (concentrator) and
an IBM 3274 within that concentrator's domain. A user
can build an entire network from intelligent concentrators
communicating with one another as peers, but cannot do
the same with cluster controllers.
COMMUNICATIONS PROCESSORS
AND NETWORK ARCHITECTURES
The implementation of network architectures is perhaps
the most important ongoing theme in the development of
data communications. In general, there are two kinds of
network architectures: those designed to provide communications among computers and terminals from a specific
vendor, and those designed to provide open communications regardless of the vendor of the communicating devices.
APRIL 1988
Mainframe vendor architectures include IBM's SNA,
Honeywell's DSA, and Unisys' BNA and DCA. Open
architectures include CCITT's X.25 packet-switching
specification and several "transparent" network schemes
marketed by communications vendors. The communications processor is the most important element in both
vendor-specific and open architectures. In the following
paragraphs, we will use the International Organization for
Standardization (ISO) reference model for Open Systems
Interconnection (OSI) to examine the different roles that
communications processors play in different kinds of network architectures.
In network architectures designed by mainframe computer vendors, the communications processor functions
most often as a front end and controls communications in
conjunction with one or more software systems in the host
computer. In general, the front-end processor handles the
Data Link through Session layers of the ISO model, with
host software implementing the Presentation and Application layers. The balance varies, depending on the architecture. In Unisys' DCA, the DCP-Series front end controls
many Presentation layer functions, while in IBM's SNA,
the host's access method (along with software residing in
the 327X terminal controllers) handles communications
down to the Session layer, with the 37XX front end acting
almost as a channel-attached packet switch. The range of
control assigned to front-end processors in other mainframe architectures varies between those extremes.
In all the mainframe architectures, the same communications processor models that serve as front ends can also
function as intelligent switches and as remote concentrators. In these functions, the communications processor
usually appear in smaller configurations than in the frontend role. Communications processors working in mainframe architecture can perform another important
function in addition to the other three: that of an intelligent gateway. In this application, the communications
processor provides the interface between the mainframe
network and communications facilities outside the architecture, particularly public, packet switched data networks
using the X.25 protocols.
The function of a communications processor differs between the two kinds of open architectures. In a full-scale
open architecture such as X.25, the communications processor serves entirely as an intelligent packet switch, implementing the Data Link through Transport layers via a
uniform set of complementary protocols. Designed specifically for public data networks, X.25 protocols ultimately
establish virtual circuits, or logical paths through the network, for devices from any vendor. Communicating devices-computers or terminals-at either end of the
virtual circuit must handle the Session, Presentation, and
Application layers according to their own protocols.
In a public network, the network provider is responsible
for network management. The X.25 communications processors in such a network therefore carry a heavy load of
© 1988 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
-------------
--- --
-
----------~--~~-
C13-010-104
Processors
Communications Processors
Concentrator
Intelligent
Switch
Front·end
Public Switched
Network
Processor
Concentrator
Intelligent
Switch
f - - - - - - - - ; - - - - i Concentrator
Front·end
Proce.sor
Figure 1. A communications processor canfunction as afront endfor one or more host computers, as an intelligent switching node
nat attached directly to any applications equipment, or as a remote terminal concentrator.
access, error, and class-of-service control, along with provisions for statistically recording traffic and usage data to
be sorted by individual users. Communications processors
designed to function as switches in public networks are
the likeliest to support high-capacity, attached storage devices such as disk and tape drives.
Communications processors operating in full-scale X.2S
configurations seldom perform a gateway function. The
user must provide compatibility with the network's standard protocols, either through an X.2S software package
that resides in a participating host or its front-end processor, or through a packet .assembler/disassembler (PAD)
that handles the Physical and Data Lirik layers of the
architecture. Table 2 shows the protocols supported by
various vendors' communications processors.
Transparent architectures are offered by vendors of communications equipment as a low-cost alternative to mainframe architectures and full-scale X.2S implementations.
These architectures are usually stripped-down versions of
X.2S· without· the network administration and class-ofservice overhead necessary to operate a public or very
large private network. In these architectures, the communications processor functions primarily as a switching
concentrator, providing services at the Data Link, Network, and Transport layers. Most such concentrators have
evolved at the high ends of lines of statistical multiplexers, adding the crucial routing and flow control features
that qualify them as communications processors. Some of
these products offer integrated network management functions such as error logging and performance statistics, but
most rely on a separate, complementary network management system for these functions.
,.
COMMUNICATIONS PROCESSOR
DESIGN
The basic design of almost all communications processors
follows the same three-tiered, hierarchical plan-a plan
that they share in common with their close cousins, the
digital PBXs, and more generally with a number of other
data communications components.
The device's central processing unit (CPU) sits at the top
of the hierarchy, along with its associated main memory;
it controls the communications processor's operation aCcording to the· rules and parameters of its operating software and, in front-end configurations, in conjunction with
instructions from the host computer. In general, the CPU
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN,NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1988
C13-01 0-1 05
Processors
Communications Processors
Host
Comput.r
Control .nd
M.int.n.nce
P.n.lor
L....-_..... Consol.
I
I
I
Common Control
Compon.nts
Lin.
a....
Lin. Sets
COlmrnUllicllticlns Lines
Figure 2. The diagram shows the hierarchical, bus-based architecture of a typical communications processor. Such a processor can
contain more than one host interface, several I/O processors, and many more line bases. Each line base serves communications
lines of a specific synchronization, speed, and protocol. Each line set serves lines with a specific physical interface. The modular
arrangement of line bases and line sets on the processor bus allows easy configuration and reconfiguration.
performs the complex or dynamic tasks such as addressing, route selection, protocol conversion, access control,
session establishment, application-level formatting, and
error logging. It also delegates the rote operations to subsidiary components.
In most communications processors, some components
operating under the direction of the CPU perform general
functions involving the operation of the whole communications processor, while others perform functions dedicated to specific groups oflines. Among the former are the
host interfaces, the input/output (I/O) processors, the reference clock, and the operator interface. Among the latter
are the processor's line bases and line sets.
(
Communications processors configured as front ends
-must have at least one host interface. The host interface
handles communications between the front-end processor
and the host's byte or block multiplexer, or selector channel. The host interface buffers data from the front end's
CPU, assembles it into parallel bit streams of a format
specific to the attached host channel, and transmits it up
the channel to the host; for data coming from the host, it
performs the same process in reverse. The host interface's
principal function is the conversion of data from the communications processor's internal word size to that of the
host computer.
APRIL 1988
Some communications processors contain one or more
input/output processors that transfer data between the
CPU and attached storage peripherals, such as disk or
tape drives. In some cases, the I/O processors arbitrate
among the various line bases for access to main memory
and to the CPU, handling interrupts generated by the line
bases or host interfaces to gain the attention of the CPU,
or controlling the line bases' and host interfaces' access to
main memory. In communications processors with more
than one I/O processor, each I/O processor usually controls a set complement of storage units or communications lines.
The reference clock generates a timing signal used by all
other components of the communications processor. In
many systems, reference timing is a function of the CPU.
Some systems have separate reference clocks for timing
signals at different data rates.
The operator interface allows a human operator to monitor and control the communications processor and to run
diagnostic tests. In newer and more sophisticated systems,
the operator interface works under software control from
a dedicated console, which usually contains a CRT or
similar display unit and a printer for logging. In most
communications processors, the operator interface works
through a front panel that contains a number of manual
switches and indicator lights.
© 1988 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-106
Processors
Communications Processors
All of the above-mentioned devices perform functions
that are· shared among all communications lines; they sit
just below the CPU in the communications processor's
internal hierarchy. On the network side, the "business
end" of a communications processor, the line bases and
line sets complete the hierarchy.
A line base, sometimes called an attachment base, interface base, or interface module, handles communications
at the Data Link layer between the communications processor and a group of attached communications lines that
share a common synchronization pattern, line speed, and
(sometimes) protocol. Each line base usually contains a
dedicated microprocessor that performs such functions as
framing and stripping, message buffering, message sequencing, synchronization, and error detection under the
direction of the CPU. Most current communications processors accommodate from 8 to 32 line bases, each of
which handles from two to eight line sets.
A line set handles communications at the Physical layer
between its attached line base and from one to eight communications lines. All the communications lines attached
to a given line set must use the same physical interface at
roughly the same data rate. The line set handles serialization of data and interface-level control signaling.
All the components of the communications processor
communicate with one another over a parallel data bus,
usually located along the backplane or a side plane of the
processor's cabinet. The physical bus architecture, popularized by minicomputer design, provides easy installation
and replacement of parts. In a hierarchical architecture
such as that of most communications processors, it also
makes for easy reconfiguration. To replace asynchronous
communications over voice grade lines with HDLC communications over wideband or satellite circuits for a 16line segment of a network, a user might only need to
replace one line base and eight line sets, rather than swapping out an entire front-end processor. The hierarchical
design extends the communications processors' functionality over time and helps to protect the user's investment
in the face of changing technology. Figure 2 shows the
hierarchical configuration of a generalized communications processor.
THE EVOLUTION OF THE
COMMUNICATIONS PROCESSOR
The communications processor as we currently know it
came into being in the middle 1970s, the result of the
merger of several separate developments in both communications and data processing. Its direct ancestors were
hard-wired communications controllers such as the IBM
270X and Sperry Univac CCM, relatively unintelligent
combinations of large multiplexers and cabling concentrators designed to perform only the basic, rote operations of
communications handling. These devices provided a
physical map of the network for the host, basically allowing it to find each physical line in its logical p(l)lling sequence and performing simple error notification.
Two developments in the late 1960s provided the technical base for the modem communications processor: the
minicomputer and the ARPAnet. The minicomputer provided a small, relatively inexpensive, software-controlled
machine that could perform a number of functions more
efficiently than a mainframe; incidentally also supplied
the bus architecture that gives communications processors
their modularity and flexibility. The ARPAnet, the first
large-scale packet switched data network, provided the
fundamental design principles for all current data communications architectures. One of these principles was the
intelligent virtual circuit switch, the first functional communications processor.
A later development in minicomputer applications created the distributed processor, a small computer dedicated
to part of a larger application that performed, as one of its
necessary functions, communications with its peers in a
distributed network. Distributed processing contributed
the idea of intelligent communications handling under
software control. Indeed, network architectures from such
minicomputer vendors as Digital Equipment Corporation
and Hewlett-Packard are applications oflater communications developments onto the framework of distributed
processing among minicomputers.
The lower cost of dedicated processing in small computers
and the higher cost of mainframe processing power made
the idea of a dedicated small computer to off-load intelligent communications handling from the mainframe economically practical. The first intelligent front ends, such
as IBM's 3704, predate modern network architectures and
to a large extent made such architectures possible.
In the late 1970s, IBM's SNA and the ISO's OSI model,
the earliest general network architectures, advanced the
idea of data communications as an entirely separate function from applications processing; they defined the network as· a physical entity separate from its participating
hosts and terminals. The best way to implement a physically separate communications function is through a system of small computers dedicated to communications.
Such communications processors could be placed at the
front end of the mainframe, or could function independently as concentrators and switches within their respective architectures.
One further development produced the communications
processor as we know it today: the microprocessor. The
advent of cheap silicon intelligence allows designers to
implement the hierarchical scheme of the typical communications architecture in hardware, with dedicated microprocessors performing low-level functions and reporting
to larger, more complex processors at the higher levels.
Indeed, some line bases in present-day communications
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1988
C13-01 0-1 07
Processors
Communications Processors
it
processors are programmable, receiving downloads from
the units' CPUs that describe the protocol and synchronization each is to use. Some newer systems are composed
entirely of redundant, microprocessor-controlled modules,
which can perform the functions of other modules with
the proper software load; such a processor is actually a
distributed communications network in a box.
The advent of the microprocessor has blurred the distinction between traditional communications processors and
less broadly functional devices, such as multiplexers and
terminal controllers, creating a new class of intelligent
protocol converters dedicated to tasks that were once economically performed by multifunctional communications
controllers. Now, even modems can detect, report, and in
some cases correct transmission errors and sense the conditions of transmission lines. The old definition of a communications processor as a computer that has been
programmed to perform one or more control and/or processing functions in a data communications network now
includes everything from modems and dedicated monitoring equipment up to the IBM 3725.
In answer to this shifting definition, Datapro offers Tab
C23, Protocol Conversion Systems, in Volume 2 of Datapro Reports on Data Communications. There, the reader
will find information on many product categories formerly covered in this report, including protocol converters, intelligent terminal controllers (with conversion
capabilities), and PADs.
ADVANTAGES AND RESTRICTIONS
The principal advantage of a communications processor
as a networking tool is the physical and logical separation
of the networking function from the application of its end
users. Whatever its architecture, such a network can function for any application, can grow in size without qualitative change to accommodate new applications, and can
accommodate new applications through the installation of
relatively standard, intelligent components. In simpler
terms, the user does not have to redesign and rebuild a
modular network to change the network's ultimate purpose.
(
Programmable, software-controlled communications processors are an especially handy tool in such standalone
networks because they can accommodate not only changes
in application but also the effects of technical progress. A
software-controlled communications processor with a
good design can survive several breakthroughs in networking technique through relatively simple upgrades.
The newer, microprocessor-controlled line bases, and
even line sets, provide an even more flexible buffer
against obsolescence.
In operation, a network controlled by communications
processors can survive the total failure of one or more of
APRIL 1988
its host processors. In a multihost network, front-end processors can switch users from applications in a failed host
to similar or identical applications in a backup host, perhaps elsewhere on the network. In a single-host network, a
functioning front end allows for a graceful degradation of
service in the event of a host failure, sometimes allowing
users to terminate their tasks before total system failure,
or allowing communications among distributed application processors in the absence of the controlling host.
Also in operation, the communications processor still fulfills its original purpose: relieving the host of the overhead
generated by keeping track of a network. Today's networks are orders of magnitude more complex than those
of the mid-1970s when the first communications processors appeared, and thanks to the declining cost of memory
and processing power, some of today's communications
processors are bigger, faster, and more powerful than that
era's mainframes. They need to be.
Complexity and incompatibility are among the restrictions of today's communications processors. In an era of
user-friendly hardware and software, the communications
processor remains a device with which only a trained
engineer should meddle. Most require programs written in
an arcane, Assembler-level language, sometimes (but not
always) with the benefit of pregenerated macros in the
host access method.
Even with recent advances in simplicity and modularity,
configuring a communications processor to suit a specific
network or application can be difficult. With today's microprocessor technology, the better communications processors are simpler; as an example, IBM's 3725
Communication Controller sports a parts list only half as
long as that of the older 3705. The trend is toward fewer,
more powerful components, but most communications
processors are still lagging a bit behind that trend.
THE CURRENT MARKETPLACE
The market for full-scale communications processors can
be broken down into four segments: IBM and plug-compatible communications processors for the IBM mainframe environment; communications processors
dedicated to the mainframe architectures of vendors other
than IBM; packet-switching processors marketed as components of large, vendor-independent private networks;
and intelligent concentrators designed to serve in transparent network architectures.
IBM remains the leader in the communications processor
market in terms of market share, with about 85 percent.
NCR Comten retains the number two position; other vendors fighting for a share of the market include Amdahl,
Computer Communications, Inc. (CCI), and NTX. The
other mainframe vendors, such as Unisys, Control Data,
and Honeywell, do not really compete with one another in
© 1988 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13·010·108
Processors
Communications Processors
TABLE·2. TERMINAL PROTOCOLS SUPPORTED
IBM BSC
IBM
SDLC
Other
BitOriented
Protocols·
Yes
Yes
No
GTE Telenet,
Tymnet, Datapac
.-
Yes
No
No
No
No
-
Yes
Yes
No
Yes
Yes; host PAD
connector, terminal PAD connection; DON, GET,
A T&T, Globenet
terminal protocol
detection for
NTR,2780,
3780, HASP,
REMl
ASCII
async·1
TTY
Amdahl 4705
Yes
Century Analysis OSI
Chi Comm. Processors
Manufacturerl
Product Name
Computer Communications
CC-6
CC-8
X.25
Packet
Level
Other Protocols Supported
TELNET (TCP/IP), automatic
Yes
Yes
Ves
Yes
No
No
No
No
Yes
Yes
No
No
Yes (1052/2741
emulation)
Yes
Yes
No
No
Control Data
CDC NET
Yes
Yes
No
Yes
Tymnet, T elenet
DCA
355
Yes
Yes
Yes
Yes
335
Yes
Yes
No
No
375
Yes
Ves, IBM
3270 BSC
No
No
GTE Telenet,
DEC DDCMP-trunk only
ITT, RCA
GTE Telenet
Tymnet, Datapac,
Uninet, Autonet,
PSS
Yes, Telenet,
Accunet, Cylix, PSS, Autonet
Tymnet, Uninet,
Transpac,
Datapac
Honeywell Datanet 8
Yes
Yes
No
Ves (HOLe)
GTE Telenet,
+ 10DDNs
VIP, PVE, RGI, LHDLC
IBM
3705-11 (E 1 thru L4)
3705-80
3725
Yes
Yes
Yes
Ves
Yes
Yes
Yes
Yes
Ves
No
No
No
GTE Telenet
GTE Telenet
GTE Telenet
-
Icot
254
Yes
Ves
Yes
HDLC
Yes
257
Yes
Yes
Yes
HDLC
Yes
CC-80/85
Computerm Corporation
No
GTE Telenet,
Tymnet
GTE Telenet,
Tymnet
Telex
Telex, 83B3
Telex, 83B3, PARS, SABRE,
ARINC
No
None
-
-
NCR 279,
Burroughs
NCR 279,
Burroughs
VISA, Tinet,
PIS
VISA, Tinet.
PIS
Infotron
990NP Network Processor
892NP Network Processor .
Yes
Yes
Yes
Ves
Yes
Yes
Yes
Ves
Ves
Passthru only
KMW Systems
Auscom 8911A
Yes
No
No
Ves
Yes
User defined
Yes
Yes
Yes
Yes
No
Yes
No
RPQ
RPQ
RPQ
Request price quotation
Request price quotation
No
No
Yes
No
No
Ves
No
No
Yes
Ves
Yes
Yes
Yes
Ves
Yes
X.75
X.75
X.75
Yes
No
No
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
Yes
Yes
No ..
No
Lemcom Systems
CMC-4, CMC-8, & CMC-32
Distributed Network
Processor Series
Virtually all are supported
Not applicable
MIA-Com
9708 MPX
9724 RPX
9000 NDX
Micom
Micro800
MB2-XAP-STD
MB3-CSW
MB3-XAP-STD/MB3-XAPHS
MB3-BSC-STD
Yes, Telenet,
No
Tymnet, Datapac,
Transpac,
Datex-P, Telepac
Yes
No
Yes
Yes
Telex
-
Yes
© 1988 OAT APRO RESEARCH CORPORATION. DELRAN,NJ 08075 USA
REPRODUCTION PROHIBITED
No
APRIL 1988
C13-010-109
Processors
Communications Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED
IBM BSC
IBM
SOLC
Other
BitOriented
Protocols'
Packet
Level
No
No
No
Yes
No
Yes
No
No
No
Yes
Telex
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
No
No
Token Ring
-
No
No
No
No
No
No
No
No
No
No
No
No
NDlC (extended HDlC)
NDlC (extended HOlC)
NDlC (extended HOLe)
Yes
No
No
No
No
No
Paradyne SOlC
HDlC, lAPO
Yes
Yes
Yes
Yes
Telenet, Info net
Yes
Telenet, Infonet
Yes
Telenet, Infonet
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Special
Special
Special
Special
Yes
Yes
Special order
Yes
Yes
Special order
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Mini-Engine
Yes
Yes
Yes
Yes
Yes
Engine
Yes
Yes
Yes
Yes
Yes
DDCMP,
Tymnet ATC
Yes
No
No
No
No
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Yes
Yes
No
DTE, Tymnet, Telenet, various PTT
Yes.
Yes
Yes
Yes
Yes, X.29 PAD
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Manufacturer/
Product Name
MB3-PSW-STD/MB3PSW-HS
MB5-XAP-STD
NCR Comten
5620
3690
3695
5660
Netlink Inc.
Network SNA-Hub
NTX
3800 Model 2.1
3800 Model 2.2
3800 Model 2.3
Periphonics
VoicePac
VoiceBox
VoiceStar 40XX
VoiceStar 42XX
VoiceStar 46XX
VoiceStar 47XX
Telematics
Net 25
Series 500, 1000, 2000
Tn-Data
Netway 1500
.Tymnet
Micro-Engine
Unisys
CP3680/CP3680-01
CP9585
B974
CP2000
Unisys
OCP/15,
DCP/40,
OCP/50
Vitalink Communications
TranslAN
TransSOlC
TransliNK
APRil 1988
Yes
--
Paradyne
Pix/Pixnet
Pixnet-Xl
(
ASCII
aavne./
TTY
&
order
order
order
order
Yes-Telenet,
Tymnet
Yes
X.25
Yes, HPADs &
TPADS-VANs
include Accunet,
Datapac, Datex-P,
DDX, DN1, Itapac, Infonet, luxpac, PSS Telenet,
Transpac,Tymnet
Telenet, Transpac, Tyment
Yes, HPADs
& TPADs include
Accunet, Datapac, etc.
Yes, HPADs &
TPADs
include
Accunet, DataTelenet, Transpac, Tyment
pac, etc.
HPADS Telenet, Transpac, Tymnet
Yes,
&TPADs-VANs
include Accunet,
Datapac, Datex-P,
DDX, DN1, Itapac, Infonet, luxpac, PSS
No
-
Special order
No
No
Yes, host or terminal PADYes, host or terminal PADYes, host or terminal PAD-
PARS
-
PARS
PARS
PARS
Yes
Yes
-
Yes
Telex, 2741, Univac
DDCMP, Honeywell, others
Telex, 2741, Univac,
DDCMP, Honeywell, others
Telex, 2741, Univac,
IPARS
@ 1988 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Other Protocols Supported
Honeywell, others
None
Most Burroughs protocols;
some IBM protocols
-
-PARS, DON TElNET
-
C13-010-110
Processors
Communications Processors
the communications processing marketplace. Each features a line of communications processors dedicated to its
network architecture, and each line of communications
processors has its merits. Honeywell's Datanet 8 Series
features a broad array of compatibility software. The
Unisys DPC Series goes further than most in providing
host-independent networking. Among vendors of private
networks, the two U.S. public network leaders, Tymnet
and Telenet, have solid offerings. A number of vendors
offer intelligent concentrators, often at the high ends of
lines of statistical multiplexers. Among the"se are Infotron,
Micom, and DCA.
According to a 1987 survey done by Focus Research
Group, Inc. (Hartford, Connecticut), IBM has 85.2 percent of the communications processor market, while NCR
Comten has 5.1 percent. Amdahl has 2.3 percent and
Memorex, which is no longer in the processor market, had
3.8 percent. No other communications processor vendor
has even a 1 percent stake. Focus Research feels that
IBM's growth and strength in the market will continue; it
predicts that "89 percent of users with plans to buy frontend communications processors over the next year will go
with Big Blue." According to Framingham, Massachusetts-based International Data Corporation (IDC), a market research firm, the communications processor market
is expected to grow at an annual rate of only 10 percent
through 1990. Thus, vendors must find ways of attracting
new customers and keeping established ones.
One method is to offer new products. Over the last year,
Amdahl Corporation introduced the 4725 (an IBM-compatib1e version of the 3725), and Control Data introduced
the XNlO network processor and enhanced versions of
the 8/20 and the 8/30 with Tl data-handling capability. In
an attempt to attract and keep customers, vendors are
offering multifunction products, connectivity, and increased transmission speeds.
NCR Comten's new announcements included the
5620XP, which is aimed at the 3725, NCP VerSion 4.0,
and an IBM-compatible SNA Network Interconnect (SNI)
feature. At this point, in spite of IBM's recent 3745 announcement, the Comten 5660 is as powerful as, it not
more powerful than, the 3745, according to an NCR Comten representative. The spokesperson stated that the only
areas in which Comten is currently lagging are in peer-topeer connectivity, direct token-ring connection, and complete NetView compatibility.
While NCR Comten is still very much involved in competing in the IBM arena, the company is also looking
ahead and making plans to support evolving industry
standards and multi vendor communications. Eric Birkeland, an NCR Com ten director of product marketing, sees
the company moving ahead to support non-IBM equipment. He stated, "Our point of emphasis in the future is
our role as a general communications processor vendor,
supporting a variety of hosts. You can expect to see products from us that allow you to interconnect to ISDN and
OSI. We are now actively participating with other companies on both developments. Both are important parts of
our future direction." One example is NCR Comten's
plans for new, enhanced software support for X.25.
Channel extenders, while they have been around for a
number of years, have just recently gained market acceptance. IBM may have legitimized the product last June
when it introduced its own channel extension unit. Channel extenders attach to mainframe channels, supporting
disk drives, front-end processors. printers, and other
mainframe equipment. One vendor describes the market
as being in the first generation of channel extension products.
While these products may be only first generation, there is
a question of whether they will pose a threat to front-end
processors. Channel extenders increase interactive performance by letting users bypass the communications processor. While channel extenders compete in high-speed,
point-to-point applications, they cannot handle gateway
functions or switching among processors. However, channel extenders can be configured with individually targeted
channels to accommodate more than one host. Some of
the products listed in the comparison columns are channel
extenders or offer channel extension capabilities. However, most channel extender vendors do not categorize
their products as communications processors; therefore, a
separate report is planned to deal exclusively with these
devices.
THE COMPARISON COLUMNS
At the end of this report are comparison columns listing
the device specifications of many communications processing systems. While compiling this report in January
1988, Datapro sent requests to over 25 firms knoWn or
believed to manufacture communications processors. The
absence of any company from the columns means that the
company either failed to respond to our request by the
deadline or chose not to be listed.
The Key to Communications Processors Comparison Columns provides a complete description of the comparison
column entries.
VENDORS
Listed below, for your convenience in obtaining additional information, are the full names, addresses, and telephone numbers of the vendors whose products are shown
in the comparison columns that follow this report.
Amdahl Corporation
1250 East Arques Avenue, P.O. Box 470
Sunnyvale, CA 94088-3470 (408) 746-6000
© 1988 DA T APRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1988
C13-010-111
Processors
Communications Processors
Lemcom Systems, Inc.
2104 West Peoria Avenue
Phoenix, AZ 85029 (602) 944-1543
Century Analysis
114 Center Avenue
Pacheco, CA 94553 (415) 680-7800
Micom Systems, Inc.
4100 Los Angeles Avenue, P.O. Box 8100
Simi Valley, CA 93062-8100 (805) 583-8600
Chi Corporation
26055 Emery Road
Cleveland, OH 44128 (216) 831-2622
NCRComten
2700 Snelling Avenue North
St. Paul, MN 55113 (612) 638-7777
Computer Communications Inc.
2610 Columbia Street
Torrance, CA 90277 (213) 320-9101
Netlink Inc.
3214 Spring Forest Road
Raleigh, NC 27604 (919) 878-8612
Computerm Corporation 100 Wood Street
Pittsburgh, PA 15222 (412) 391-7804
NTX Communications Corporation
508 Tasman Drive
Sunnyvale, CA 94089 (408) 747-1444
Control Data Corporation
8100 34th Avenue South
Minneapolis, MN 55420 (612) 853-8100
Paradyne Corporation
8550 U1merton Road
Largo, FL 33540 (813) 530-2000
Digital Communications Associates, Inc. (DCA)
1000 Alderman Drive
Alpharetta, GA 30201 (404) 442-4000
Periphonics Corporation
4000 Veterans Memorial Highway
Bohemia, NY 11716 (516) 467-0500
Honeywell .Information Systems, Inc.
200 Smith Street
Waltham, MA 02154 (617) 895-6000
Hughes Network Systems, Inc. 11717 Exploration Lane
Germantown, MD 20874 (301) 428-5500
Icot Corporation
3801 Zanker Road, P.O. Box 5143
San Jose, CA 95150-5143 (408) 433-3300
Infotron Systems Corporation
9 North Olney Avenue
Cherry Hill, NJ 08003 (609) 424-9400
International Business Machines Corporation
Old Orchard Road
Armonk, NY 10504
Contact your local IBM representative
KMW Systems Corporation
100 Shepherd Mountain Plaza
Austin, TX 78730-5014 (512) 338-3100
APRIL 1988
Telematics International, Inc.
Crown Center, 1415 NW 62nd Street
Fort Lauderdale, FL 33309 (305) 772-3070
Tri-Data
1450 Kifer Road
Sunnyvale, CA 94086-5306 (415) 746-2900
Tymnet-McDonneli Douglas Network Systems Company
2560 North First Street, P.O. Box 49019
San Jose, CA 95161-9019 (408) 922-0250
U nisys Corporation
One Unisys Place
Detroit, MI 48232 (313) 972-7000
Unisys Corporation
P.O. Box 500
Blue Bell, PA 19424 (215) 542-4011
Vitalink Communications Corporation
6607 Kaiser Drive
Fremont, CA 94555 (415) 755-6130.
© 1988 DATA PRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-112
Processors
.Communications ProcessorS
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON COLUMNS
The comparison columns that fol~ow this report list the major characteristics 0168 commercially available communications
processors. The text below explams the column entries, in order of their appearance.
..
Computer &ystems Interfaced. For processors that serve
IBM and plug-compatible mainframe computers, we ass.ume that they serve the entire, upward-compatible IBM
IIn~ (IBM 370, 303X, 308X, and 43XX) along with the
major plug compatibles. For processors operating in open
network architectures,we list "Most major vendors."
processor can support. The next entry lists the highest data
rate the processor can support; The last entry lists the effect
(if any) that converting all lines to full-duplex operation
would have on capacity. Where such a conversion has an
effect, it usually cuts the maximum in half.
Direct Attachment to Host. This is one indication ofwheth~
er the device is a true front-end processor. Network processors do not connect directly to the host.
COMMUNICATIONS FEATURES/FUNCTIONS
FUNCTIONAL CHARACTERISTICS
Front-End Processors. This entry indicates whether the
processor in question can serve as a channel-attached front
end to a mainframe computer. The next two entries list the
maximum number of hosts that can be channel attached,
and the number of those hosts that can be active
simultaneously.
IBM Emulation. This entry lists the degree of IBM emulation the processor can perform.
PU Type within Network. This entry indicates the PU
(physical unit) type found within the network.
Remote Line Concentrator. A "yes" for this entry indicates
whether the processor in question can serve as a line
concentrator remote from any host processor in its network. The next entry lists the number of hosts the concentrator can serve at one time.
Host-Independent Network Processor. This entry indicates
that the processor in question can control a network of open
architecture without the direction of a host computer.
Host Channel E~ender. This entry indicates that the processor can function as a host channel extender within its
architecture.
:terminal Controller. This entry indicates that the processor
In question can function as a terminal controller within its
architecture.
.
Store-and-Forward Message-Switching Processor.This entry indicates that the processor in question can function as a
standalone, store-and-forward message switch.
Distributed Processing Node. Most true communications
processors are not able to perform applications processing'
however, some (including a few intelligent concentrators)
can support distributed applications in addition to their
principal networking function. This class of communications processor is becoming rarer.
Network Architecture Compliance. Some communications
processors function exclusively within their vendors' network architectures; others support open architectures such
as X.25. If a processor supports no network architecture it
may be. a "transparent" device, or it may support tlte
prearchltectural protocols of the vendor(s) whose hosts it
supports.
En~es ~nder this heading list the major functions a commUnicatIOns processor perform; but that not all communications processors do perform.
Multiplexing/Demultiplexing. This entry indicates that the
processor in question can function as a multiplexer.
Terminal-Initiated Application Switching. This entry indicates that the processor in question supports the selection of
applications within a session between an attached terminal
and an attached host, at the terminal's request.
Communications Processor Initiated Dynamic Line Reconfiguration. Dynamic line configuration is another name for
fallback ~witching.~his en~ry indicates that the processor
In question can SWitch Without operator intervention a
sessic;lfi ~rom a connection involving a failed line or commUnicatIOns processor component to a healthy connection
when it senses the failure.
Interface to Ethernet LAN. This entry indicates that the
processor offers an interface to an Ethernet LAN.
Protocol Conversion. The most common protocol conversion is from asynchronous ASCII to the synchronous trunk
protocol specified by a given architecture (e.g., IBM's BSC
or SDLC, or X.25's LAP-B). This entry specifies the types
of protocol conversion the processor in question can
. .
perform.
Code Conversion. The most common code conversion is
from ASCII to IBM's EBCDIC. This entry indicates which
code conversions the processor in question can perform.
Error Control. This entry specifies which of the available
schemes f~r error ~etection (e.g., parity, LRC, or CRC) the
processor In questIOn uses.
'
~utoma!ic
Transmission Speed Detection. If the processor
In questlOn· can sense the data rate of a given transmission
without intervention from the operator or user, this entry
lists the speeds it can sense.
Automatic Disconnect of Inactive Dial-Up .Terminals.
Ma!ly communicat~ons proce~sors can sense activity on
their attached termInals and disconnect a terminal session
ifit h~s been ~na~tive for a specified perio.d of time. A "yes"
for thiS entry Indicates that the processor In question can do
so.
SYSTEM CHARACTERISTICS
Processor Type. This entry lists the vendor and model of
communications processor's CPU. Many communications processors use standard OEM microprocessors such
as the Z80 or the MC68000.
~e
. Communications Line Capacity. The first section of this
entry deals with the number of lines a communications
© 1988 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1988
C13-010-113
Processors
Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON COLUMNS (Continued)
Main Memory Word Size, bits. In most cases, the main
memory word size is also the width of the processor's
internal transmission path along its bus.
Main Memory Storage Capacity, bytes. This entry lists the
capacity of main memory in the communications processor
in question. Large main memory capacity is useful for
transmission with modern, high-speed protocols in which
large blocks of data must be stored for retransmission in
case of error. Abundant main memory is also useful for the
performance ofa number of high-level functions on a timeshared or interrupt basis.
Level of Data Unit Transferred Across I/O Channel. Communications processors configured as front ends transfer
data to and from the host through an I/O channel. The
width, in bits, of the I/O channel, coupled with the communications processor's main memory word size, yields the
level of data transferred (e.g., byte or block).
Type of Data Transfer Supported between Memory and
a) Communications Lines, b) Mass Storage, and c) Other
Peripherals. In some communications processors, only the
CPU has access to main memory, and other components,
such as line bases and I/O processors, must interrupt the
CPU to read or write information in main memory. In
others, microprocessors in the subsidiary components
share control of main memory with the CPU and can read
and write memory on their own. The latter process is called
Direct Memory Access (DMA).
I/O, Backup, and Diagnostic Peripherals Supported. Most
communications processors interact only with their attached hosts and terminals and rely on host disk systems for
storage and on host software for detailed diagnostics. Some
newer models, however, support local disk storage for
control software, traffic, and support information and feature diagnostic consoles for direct operator intervention.
Support for Remote Console. Some processors that support
local operators consoles can also support an operator's
console attached over communications lines.
Support X.2S Level 3 Capabilities. This entry indicates that
the processor supports X.25 capabilities.
COMMUNICATIONS OPERATING SOFTWARE
Operating System Implemented in. This entry indicates
how the processor in question stores its control program:
wired directly and inflexibly into the hardware, in software
that must be loaded into memory from the outside; in
firmware (local read-only memory) on-board the processor,
or in some combination of these.
IPL Method. This entry indicates how the processor in
question receives its initial program load: from its host
APRIL 1988
processor, from a locally attached diskette activated by an
operator, or from on-board read-only memory.
Additional Software Supported. This entry lists any network control or applications software that the processor in
question can support.
User Programmability. This entry indicates the degree of
control users have over the control programs in the communications processor. Some are programmable in the
sense that users can select among a number of preset
configuration parameters, usually from a menu. Others are
fully programmable, usually through an Assembler-level
language. Mainframe front-end processors usually use a
subset of their hosts' access methods implemented in macros; other programmable communications processors use a
native Assembler language.
Software Separately Priced. This entry indicates whether
the communications processor's operating software is included in the cost of the hardware.
Approximate Proportion of Currently Installed Systems
Supplied as Turnkey Systems. A turnkey system is a system
with which the user need not participate in the configuration design; the user can simply "turn the key" and have a
working system. Conversely, a turnkey system is one for
which the user is denied the privilege of a custom
configuration.
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported. Some processors now offer
management functions, such as running diagnostic tests.
Examples include remote and local loopback, port/link
status, and internal diagnostics.
Data Collected. In gathering performance data, the processor can collect traffic statistics, line failures, error records,
etc.
PRICING AND AVAILABILITY
Entries under this header list purchase, lease (or rental) and
maintenance pricing, whether maintenance is bundled with
the lease or rental price, the product's date of first delivery,
the number of processors of that model the vendor has
installed to date, and the provider of service and maintenance for the product.
Vendor Phone Number. The vendor's phone number is
supplied at the bottom of each comparison column as a
courtesy to the ,reader.
Comments. Comments at the end of the columns describe
significant or unusual features, capabilities, or applications
that are not reflected in the standard entries.O
© 1988 DA T APRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
/
C13-010-151
Processors
Communications Processors
(
VENDOR AND MODEL
COMPUTER SVSTEMS INTERFACED
Manufacturers and Models
Century Analysis
OSI
IOffice Systems
Interface)
Amdahl
4725
All IBM- and Amdahlcompatible mainframes
Ves
All IBM- and Amdahlcompatible mainframes
Ves
All IBM- and Amdahlcompatible mainframes
Ves
NCR Criterion, 9800
Ves
6
4
270X/370X, EP, NCP,
ACF
PU Type within Network
PU Type 4
Remote Line Concentrator:
Ves
Maximum No. of Hosts Served by One Concentrator Unlimited
Host-Independent Network Processor
No
Host Channel Extender
Ves
Terminal Controller
No
Store-and-Forward Message Switching Processor
No
Distributed Processing Node
No
Network Architecture Compliance
SNA
Ves
6
4
270X/370X, EP, NCP,
PEP
PU Type 4
Ves
Unlimited
No
Ves
No
No
No
SNA
Ves
Up to 8
Vendor did not specify
ACF/NCP, PEP, EP, 3725
Ves
Not applicable
Vendor did not specify
Not applicable
PU Type 4
Ves
Unlimited
No
No
No
No
No
SNA
Vendor did not specify
Ves
1
No
No
Ves
No
Ves
Proprietary
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
352
Processor
Highest Line Speed Supported (bps)
64K
Effect on Line Capacity, If All Lines Are Fuil-Duplex Capacity halved
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
Ves
FEP 352, high speed 384 256
24
2.048M
High speed section-none
FEP section-halved
256K
Vendor did not specify
19.2K
None
No
Ves
No
No
SIS, BSC, SDLC to X.25
No
Ves, via Commpro
No
No
No
No
Ves
Vendor did not specify
Vendor did not specify
Vendor did not specify
Ves
Ves
Ves
No
No
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Ves
ASCII to EBCDIC
LRC and CRC
50-9600 bps
Ves
ASCII to EBCDIC
LRC and CRC
Ves
Ves
No
Ves
Ves
Ves
Proprietary
18
To 1,024K
Byte or block
Proprietary
Vendor did not specify
Up to 3M
Byte or block
68010
16 bit
756K
Byte, block
DMA/lnterrupt
Vendor did not specify
Vendor did not specify
Diskette (diagnostic),
console-via Commpro
Ves, via Commpro
Ves
DMA/ Interrupt
Vendor did not specify
Vendor did not specify
Vendor did not specify
Interrupt
Not applicable
Not applicable
Not applicable
Ves
Ves
Ves
No
SVSTEM CHARACTERISTICS
Processor
Proprietary
Main Memory Word Size, bits
18
1,024K
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Byte or block
Type of Data Transfer Supported between Memory &:
Communications Lines
DMA/lnterrupt
None
Mass Storage
Other Peripherals
None
I/O, Back-Up, and Diagnostic Peripherals
Diskette (diagnostic)
Supported
Support for Remote Console
No
Support X.25 Level 3 Capabilities
Ves
Communications Operating Software:
Operating System Implemented in
Software
Software
Software
Proprietary
IPL Method
Additional Software Supported
Download from host
Commpro, UTS/F (UNIX)
Downline load from host
Commpro
Download from host
Ves
Download from host
Spreadsheet, print
format
User Programmability
Ves
Ves
Ves
No
Software Separately Priced
Ves
Ves
Ves
Not applicable
All
100%
Vendor did not specify
All
Ves
Ves
Ves
Ves, point status
Ves
Ves
Ves
Traffic statistics
52,600
375
2,385 (2-yr. lease)
67,000+
475+
3,000+ (2-yr. lease)
From 71,500 to 545,160 6,995
Contact vendor
600/yr.
Vendor did not specify
Contact vendor
No
April 1983
800
Amdahl
No
1986
6
Amdahl
No
4725-40 (1987).
New
Amdahl
No
1981
1,200
CAl
(408) 746-6000
Remote load via comm.
line; operates with IBM
3705 and 3705/Commpro
software. ·1987 info.
(408) 746-6000
Remte load via comm Ine
basic. same as 4705E;
supports up to 4 highspeed Iinks.·1987 info.
(408) 746-6000
·4725-30 model will be
available 3rd quarter
1988. Runs standard IBM
3725 ACF/NCP software.
(415) 680-7800
Load leveling, raw line
selection, terminal key
ahead, mainframe intel.
rout., port contention.
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILlTV
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
c
Amdahl
4705T"
Amdahl
4705E"
VENDOR PHONE NUMBER
COMMENTS
APRIL 1988
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-152
Processors
Communications Processors
Cili Communications
Processor
CCP/3205
. VENDOR ANP MODE.1.
COMPUTER SVSTEMS INTERFACED
Manufacturers and Models
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
•:L.
CCP/3212
Unisys Series 1100
Ves
Ves
Ves
IBM S/370, 30XX, 43XX,
and compatibles
Ves
Ves
B
8
No
Ves
2
2
No
Ves
B
8
No
Ves
2
2
370X/37X5 EP
PU Type 2
Ves
Unlimited
Ves
No
Ves
No
No
X.25,OSI
PU Type 2
Ves
Unlimited
Ves
No
Ves
No
No
X.25,OSI
PU Type 2
Ves
Unlimited
Ves
No
Ves
No
No
X.25,OSI
PU Type 4
No
Not applicable
No
No
Ves
No
No
No
24
Over 1,000
32
64K
None
64K
None
56K
None
Ves
Ves
Ves
Ves
Async to uniscope
Ves
Ves
Ves
No
No
ASCII/EBCDIC/XS3
LRC-CRC detect/correct.
Ves, 110-19.2K bps
Ves
Ves
Ves
Ves
Ves
Async/unisc.; 3270 to
async, async to X.25
ASCII/EBCDIC/XS3
LRC-CRC detect/correct.
Ves, 110-19.2K
Ves
Concurrent 3205
32
1M (std.), up to 8M
Byte
Concurrent 3205
32
1M (std.), up to 8M
Byte
Concurrent 3212
32
4M (std.), up to 16M
Byte
CCI601
16
64K
Byte
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP console, diskette,
patch panel
Ves
Ves
DMA/lnterrupt
DMA/lnterrupt
OM A/Interrupt
FEP console, diskette,
patch panel
Ves
Ves
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP console, diskette,
patch panel
Ves
Ves
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP CRT console, diskette, printer
Ves
Ves
Software and firmware
combination
Host download, diskette
Development, communications
Firmware/software
combination
Host download, diskette
Development, communications
Firmware/software
combination
Host download, diskette
Development, communications
Software
Ves, via user-selected
parameters
Some
Ves, via user-selected
parameters
Some
Ves, via user-selected
parameters
Some
From host/diskette
Value added options,
assembler, utilities,
diagnostics
Ves, via user-selected
parameters & programs
Valua added options
All
All
All
All
Loc/rem. Ipbk, internal
diag., prob. determ.
Line outage/hits, port
stat., error, trace
Lac/rem. Ipbk, internal
diag., prob. determ.
Line outage/hits, port
stat., error, trace
Loc/rem. Ipbk, internal
diag., prob. determ.
Line outage/hits, port
stat., errors, trace
Not applicable
50,000
600
Contact vendor
35,000
300
Contact vendor
90,000
Depends upon config.
Contact vendor
17,900
150
630
No
1977
100
Chi
No
1985
Info. not available
Chi
No
1987
Info. not available
Chi
Ves
November 1981
30
Computer Communications
(216) 831-2622
Dynamic rout., 2 async
screen ed., auto. term.
protocol detect. redund
mult. loc/rem. hosts.
(216) 831-2622
Preconfig., dynamic
routing, 2 async screen
ed .• auto term. protocol detect. redundancy .
(216) 831-2622
/leplaces 3210; Highspeed vers.; TCP/IP;
dynamic rout.; 2 async
screen ed.; redundancy.
(213) 320-9101
Auto-poll, autobaud
rate detect, autodial,
single lOP support. off
line util.. flow contrl
Ves
Ves
Ves
Ves
Async to uniscope, 3270
to uni., async to X.25
Code Conversion
ASCII/EBCDIC/XS3
Error Control
LRC-CRC detect/correct.
Automatic Transmission Speed Detection
Ves, 110-19.2K bps
Automatic Disconnect of Inactive Dial-Up Terminals Ves
User Programmability
Computer
Communications
CC-6F
Processor
Unisys Series 1100
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
IPL Method
Additional Software Supported
Chi Communications
Unisys Series 1100
Communications Line Capacity:
Over 1,000
No. of Half-Duplex Lines Physically Attachable to
Processor
64K
Highest Line Speed Supported (bps)
Effect on Line Capacity, if All Lines are Full-Duplex None
SVSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
Chi Communications
Processor
CCP/3205P
© 1988 OATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
Ves
Parity LRC, and CRC
Ves; 110-1200 bps
Ves
Statistics
APRIL 1988
/
C13-010-153
Processors
Communications Processors
Computer
Communications
CC-8
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Yes
4
4
370X/37X5 EP
Yes
7
7
370X/37X5 EP
Yes
4
4
CTCA
Yes
2 to 4
2 to 4
Not applicable
PU Type 4
No
Not applicable
No
No
Yes
No
No
No
PU Type 4
No
Not applicable
Yes
No
Yes
Yes
No
No
CTCA
No
Not applicable
No
Yes
No
No
No
SNA
Not applicable
Yes
2 to 4
Yes
Yes
No
No
No
Transparent
Vendor did not specify
4
230.4K
None
1.544M
None
8 full duplex (to an
aggregate of 1M bps)
448K per line (Model 4)
None
Yes
Yes
Yes
No
No
Yes
Yes
Yes
No
No
No
No
Yes
No
No
No
Yes
No
No
No
Yes
Parity LRC and CRC
Yes; 110-1200 bps
Yes
Yes
Parity LRC and CRC
Yes; 110-1200 bps
Yes
No
Native HDLC
No
No
No
LRC-CRC detect/correct.
No
No
CCI 801
16
64K
Byte
CCI 8001/8501
16
256K
Byte
Mult. 8809, 8089, 68000
8
512K-1M
Byte, block, selector
IBM Series/1'
16
512K
Byte, block
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP CRT console,
diskette, printer
Yes
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Disk (4O-2ooMB), mag
tape, FEP CRT, printer
Yes
Yes
DMA
DMA
Not applicable
Diskette, supervisory
console, display unit
Yes
No
DMA
None
DMA
FEP console, diskette
Software
Software
Software
From host/diskette
Value added options
assembler loader,
utilities, diagnostics
Yes, via user-selected
parameters & programs
Value added options
From host/ disk
Value added options,
custom software,
assembler, loader,
Yes, via user-selected
parameters & programs
Options and custom sys.
Host, manual diskette
Not applicable
Firmware and software
combination
Inter. slf-Ioad/disk.
Vendor did not specify
Yes
Yes, user configurable
None
None
90%
95%
All
All
Vendor did not specify
Vendor did not specify
Through NetView
Internal
Statistics
Statistics
Through NetView
Traffic load., line outages, errtors, trace
39,840
296
1,224 (3-yr.); 1,600
(rental)
Yes
1976
270
Computer Communications
68,000/115,640
246/426
1,932 (3-yr. lease)
55,965
369
1,552 (3-yr. lease)
93,000
834
2,854 (3-yr. lease)
Yes
1975
432
Computer Communications
Yes
January 1986
24
Computer Communications
Yes
June 1983
100+
Computerm
(213) 320-9101
Auto poll, autobaud
rate detect, speed &
code conver .. autodump,
autoload, multihost spt
(216) 320-9101
Used mainly for custom
store-and-forward
message switches,
electronic mail, etc.
(216) 320-9101
T 1 processor for bulk
file data transfer;
simult. attached to
pre-SNA/SNA hosts.
(412) 391-7804
'Series/1 w /proprietary
processors; ch. extension includes printers,
CRTs, & magnetic tape.
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
Vendor did not specify
Processor
Highest Line Speed Supported (bps)
230.4K
Effect on Line Capacity, if All Lines are Full-Duplex None
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
IPL Method
Additional Software Supported
User Programmability
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
APRIL 1988
Computenn
Model 3800/3890
IBM S/370, 30XX, 43XX, IBM S/370, 30XX, 43XX, IBM S/370, 30XX, 43XX, IBM S/370, 43XX, 30XX,
and compatibles
and compatibles
and compatibles
and compatibles
Yes
Yes
Yes
Yes
Direct Attachment to Host
VENDOR PHONE NUMBER
COMMENTS
Computer
Communications
CCI Superband 8400
Computer
Communications
CC-80/85
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
No
No
C'i3-01(j.154
Processors
Communications Processors
Computerm
Model 4080
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM S/370. 43XX. 30XX. CDC Cyber 170/180
and compatibles
Yes
Yes
Direct Attachment to Host
Digital
Communications
Associates IDCA)
System 335
Control Data
CDCNET
Digital
Communiciltions
Associates IDCA)
System 355
Most vendors
Most vendors
Yes
Yes
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Yes
4
4
Not applicable
Yes
2
2
None
Yes
4
42
SNA/SDLC. 3270 BSC
Yes
44
124
SNA/SDLC. 3270 BSC
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Not applicable
Yes
4
Yes
Yes
No
No
No
Transparent
PU Type 5
Yes. RTI
Unlimited
No
No
Yes
No
Yes
CDCNET (OSI model)
Vendor did not specify
Yes
42
Yes
No
Yes
No
Yes
SNA. X.25. BSC
Vendor did not specify
Yes
124
Yes
No
Yes
No
Yes
SNA. BSC. X.25
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
Processor
Highest Line Speed Supported (bps)
Effect on Line Capacity. if All Lines are Full-Duplex
8 full duplex (to an
aggregate of 1M bps)
448K (per line)
None
MTI 64. LAN 5.000
4
44
64K
None
72K
None
12K
None
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
No
LRC-CRC detect/correct.
No
No
Yes
Yes
Yes
Yes
Async - 3270 BSC. async
-X.25. TCP/IP to X.25
ASCII to EBCDIC
No
Parity check. LRC-CRC.
ARO-CRC
Yes. 100 bps-38.4K bps Yes
Yes
Yes
Yes
Yes
Yes
Yes
Async-3270. asyncX.25. TCP/IP - X.25
No
ARO-CRC
Yes
Yes
IBM Series 1·
16
512K
Byte. block
Multiple MC 68000
16 bits
lM-4M
Block
Z80B.68ooo
8 bits
64K-512K
Byte. block
Z80B. 68000
8 bits
64K-512K
Byte. block
DMA
None
DMA
FEP console. diskette
DMA/lnterrupt
None
DMA/lnterrupt
FEP console
No
No
Yes
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP console. disk.
diskette
Yes
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Dual call console.
disk. diskette
Yes
Yes
Firmware/software,
combination
Inter. slf-Ioad. disk.
Vendor did not specify
Firmware/software
combination
Download from host
None
Software
Software
Downline/int. self-load
Not applicable
Intern. self-load/man.
Not applicable
User Programmability
Yes. user configurable
Software Separately Priced
None
Yes. via usar-created
programs
Some
Yes. via user-selected
parameters. console
All
Yes. via user-selected
parameters. console
All
All
All
25%
25%
Internal
Traffic load/line out./
error rates/trace
Loc/rem. Ipbk. internal
diag .• prob. determ.
Traffic load/line out./
line hits/events/acct.
Loc/rem loop .• port/
line status. internal
Traffic load/line out.f
port stat./errors/hits
Loc/rem loop .• port/
line stat. mod/lead.
Traff. load .• line hits
stream .• net soft. fail
97.000
690
2.610 13-yr. lease)
12.565
70
600 (3-yr. lease)
Vendor did not specify
Contact vendor
Contact vendor
Vendor did not specify
Contact vendor
Contact vendor
Yes
December 1982
188
Computerm
No
December 1985
2.000+
Control Data
No
1980
Info. not availab!e
DCA. third party
No
1980
Info. not available
DCA. third party
(412) 391-7804
·Series/l w /proprietary
microprocessors. Includes PRT. CRT. satellite comm. support.
(612) 853-5641
CDCNET-dist. netwrk. of
mainframe. term .• & net
work device interfaces
conn. by Ethernet/X.25.
(404) 442-4000
Supports direct 802.3
LAN interface running
TCP /IP software.
(404) 442-4000
Supports direct 802.3
LAN interface running
TCP/IP software.
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size. bits
Main Memory Storage Capacity. bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O. Back-Up. and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
IPL Method
Additional Software Supported
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETYVORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration. Including All Hardware
Components Required for Basic Operation:
Purchase Price. $
Monthly Maintenance. $
Monthly Lease/Rental. $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
Yes
Yes
Yes
Yes
No
No
Yes
. No
No
No
© 1988 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1988
C13-010-155
Processors
Communications Processors
Digital
Communications
Associates (DCA)
System 375
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors
Honeywell Bull
Datanet 8/20
Honeywell Bull
Datanet 8/10
Honeywell Bull
Datanet 8/30
Yes
DPS 7/DPS 88/DPS 8000 DPS 7/DPS 8/DPS 8000/ DPS 7/DPS 8/DPS 8000/
DPS 8/DPS 90/DPS 7000 DPS 88/DPS 90/DPS 706< DPS 88/DPS 90/DPS 7oo(
Yes
Yes
Yes
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Yes
144
124
SNA/SDLC, 3270 BSC
Yes
1 or 2
1 or 2
Yes
Yes
4
4
Yes
Yes
4
4
Yes
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Vendor did not specify
Yes
124
Yes
No
Yes
No
Yes
SNA, BSC, X.25
Vendor did not specify
Yes
Vendor did not specify
Yes
Vendor did not specify
Yes
No
Yes
Honeywell Bull DSA, ISO
Vendor did not specfiy
Yes
Vendor did not specify
Yes
Vendor did not specify
Yes
No
Yes
Honeywell Bull DSA,
ISO
Vendor did not specify
Yes
Vendor did not specify
Yes
Vendor did not specify
Yes
No
Yes
Honeywell Bull DSA,
OSI
31
127
255 (max.)
2.5M (Tl)
Load dependent
2.5M (Tl)
Load dependent
2.5M (n)
Load dependent
Yes
Yes
Yes
Yes
Async/X.25/3270 BSC,
TCP/IP to X.25
No
ARQ-CRC
Yes
Yes
Yes
Yes (by host program)
Yes
Via X.25
No
Yes
Yes (by host program)
Yes
Via X.25
No
Yes
Yes (by host program)
Yes
Via X.25
No
No
Yes
Yes; 110,300, 1200 bps
Yes; optional, variable
No
Yes
Yes, 110,300, 1200 bps
Y 9S; optional, variable
No
Yes
Yes; 110, 300, 1200 bps
Yes; optional, variable
Z80A/B,68000
8
64 to 512K
Byte, block
Datanet 8/10
16
1M to 2M (w/option)
Byte
Datanet 8/20
16
1M to 2M (w/option)
Byte
Datanet 8/30
16
2M to 4M (w/option)
Byte
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP console, diskette,
disk
Yes
Yes
Async bus
Async bus
Async bus
Console, diskette
Async bus
Async bus
Async bus
Console, diskette
Async bus
Async bus
Async bus
Console, diskette
Yes
Vendor did not specify
Yes
Vendor did not specify
Yes
Vendor did not specify
Software
Firmware and software
combination
Host, local, or VIP
Additional on host for
administrative and
control
Yes, via user-selected
parameters
All
Firmware and software
combination
Host, local, or VIP
On host for administrative and control
Firmware and software
combination
Host, local, or VIP
On host for control
and administrative
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
All
Software is customer
installable
Software is customer
installable
Software is customer
installable
Direct Attachment to Host
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
144
Processor
Highest Line Speed Supported (bps)
12K
Effect on Line Capacity, if All Lines are Full-Duplex None
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
tpL Method
Additional Software Supported
Intern. self-load/man.
Not applicable
User Programmability
Yes, via user-selected
parameters, console
All
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
25%
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
APRIL 1988
Yes
Yes
Yes
Yes
Yes
Yes
Vendor did not specify
Contact vendor
Contact vendor
23,900
130
795 (4-yr. lease)
38,000
215
1,275 (4-yr. lease)
80,000
350
2,675 (4-yr. lease)
No
December 1984
Info. not available
DCA, third party
No
1985
Info. not available
Honeywell Bull
No
1985
Info. not available
Honeywell Bull
No
1985
Info. not available
Honeywell Bull
(404) 442-4000
Supports direct 802.3
LAN interface running
TCP/IP software.
(617) 895-6000
Low-end model in the
Datanet 8 Series.
(617) 895-6000
(617) 895-6000
Loc/rem. loop., port/
line stat. modem lead
Traff. load., line hits
net soft. failures
Data Collected
© 1988 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-01 O~156
Processors
Communications Processors
Hughes Network
Systems
Network Controlled
9708 MPX
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Hughes Network
Systems
Standalone MPX
Hughes Network
Systems
9000 NPX
Hughes Network
Systems
9724 RPX
Most vendors via X.25/
X.75
No (X.25)
Most vendors via X.25/
X.75
No (X.25)
Most vendors via
communications
No (X.25)
Most vendors via X.25/
X.75
No (X.25)
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
No
Not applicable
Not applicable
Not applicable
No
Not applicable
Not applicable
Not applicable
No
Not applicable
Not applicable
SNA/SDLC
No
Not applicable
NQt applicable
SNA/SDLC
PU Type within Network
Remote line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Not applicable
Yes
7
Yes
No
No
No
Yes
OSI, X.25
Not applicable
Yes
8
Yes
No
No
No
Yes
X.25, OSI
PU Type 2
Yes
600+
Yes
No
No
No
Yes
X.25, OSI
PU Type 2
Yes
23
Yes
No
No
No
Yes
X.25,OSI
8
640
24
19.2K
None
64K
None
64K
None
Yes
Yes
Yes
No
No
Yes
Yes
Yes
No
SDLC to X.25
Yes
Yes
Yes
No
SDLC to X.25
Direct Attachment to Host
Communications line Capacity:
No. of Half-Duplex lines Physically Attachable to
8
Processor
Highest line Speed Supported (bps)
19.2K
Effect on line Capacity, if All Lines are Full-Duplex None
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-lnitiated Applications Switching
Comm. Processor-Initiated Dynamic line Reconfig.
Interlace to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
, Operating System Implemented in
Yes
Yes
Yes
No
No
No
No
No
ARQ-CRC/LRC-CRC detect ARQ-CRC, LRC-CRC detect LRC-CRC detect/ ARQ-CRC
No
No
No
No
No
No
No
LCR-CRC detect/ ARQ-CRC
No
No
Intel 186
16
704K
Byte, block
Intel 186
16
512K
Byte, block
Intel 186 & 286
16
Over 50M
Byte. block
Intel 286 and 186
16
2M
Byte, block
DMA/lnterrupt
Not applicable
Not applicable
FEP console, disk,
magnetic tape
Yes
Yes
DMA/lnterrupt
Not applicable
Not applicable
Not applicable
DMA/lnterrupt
DMA
Not applicable
Disk, tape, console
DMA/lnterrupt
Not applicable
Not applicable
Disk, tape, console
Yes
Yes
Yes
Yes
Yes
Yes
;
Firmware
Firmware
Firmware
Firmware
IPL Method
Additional Software Supported
Download from host
Remote diagnostics
Internal self-load
Vendor did not specify
Downln. load/loc reload
Remote diagnostics
Downline load, local
Remote diagnostics
User Programmability
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
None
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
All
All
Not applicable (new)
All
All
Loc/rem Ipbk/internal
diag/prob. determ.
Traff. load/stat/trace/
account/errors/events
Loc/rem Ipbk, internal
diag., prob. determ.
Events/stat/traff load/
line out/ error/trace
Loc/rem Ipbk, internal
diag, prob. determ.
Events/stat./account./
trace/errors/traf. load
Loc/rem Ipbk/internal
diag./prob. determ.
Events/stat/accounting/
trace/errors/line hits
8,900
Contact vendor
Contact vendor
7,400
Contact vendor
Contact vendor
30,000
Contact vendor
Contact vendor
Under 20,000
Contact vendor
Contact vendor
No
1986
170
Hughes Network
No
January 1988
New product
Hughes Network
No
1982
700
Hughes Network
No
1986
100
Hughes Network
(301) 428-5895
Part of HNS Integrated
Packet Network; network
mgmt. capability; X.21
logical addressing.
(301) 428-5895
Field upgrade. to network controlled 9708
MPX. mono & controlled
from async terminal.
(301) 428-5895
Part of HNS' Integrated
Packet Network; full
netwrk. mgmt. capabil.,
Virtual Circuit Recon.
(301) 428-5895
Part of HNS Integrated
Packet Network; full
network mgmt. capabilities, dynamic routing.
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1988
C13-010-157
Processors
Communications Processors
:f
ICOT Corporation
254*
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct Attachment to Host
Infotron
990NP
Network Processor
ICOT Corporation
257*
Infotron
892NP
Natwork Processor
ICOT 254
ICOT 257
Vendor did not specify
Not applicable
Vendor did not specify
Vendor did not specify
No
No
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Yes
No
8
3270 BSC, SNA/SDLC
Yes
No
28
3270 BSC, SNA/SDLC
No
None
Over 10 hosts
3270 BSC
No
None
None
None
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Vendor did not specify
Yes
8
Yes
Vendor did not specify
Yes
No
Yes
SNA,BSC,NCR
Vendor did not specify
Yes
28
Yes
Vendor did not specify
Yes
No
Yes
SNA,
NCR
No
Yes
Over 10 hosts
Yes
No
No
No
Yes
Proprietary
None
Yes
2 hosts
Yes
No
No
No
Yes
Proprietary
28 (all sync)
640
104 channels
19.2K
Vendor did not specify
64K
None
64K
None
Yes
No
Yes
Vendor did not specify
Yes
Yes
No
Yes
Vendor did not specify
Yes
Yes
Yes (async)
Yes
No
No
Yes
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
No
No
No
Yes
Yes, to 9600 bps
Yes
No
ARO-CRC
Yes, 110 to 9600 bps
Yes
Multi-Intel 8088
16K
128K
Byte
Intel 8088
16K
128K
Byte
6502/8086/80186
Vendor did not specify
Vendor did not specify
Not applicable
80186, 6502
Not applicable
Not applicable
Byte
Interrupt
Mail box
Vendor did not specify
Host console
Interrupt
Mail box
Vendor did not specify
Host console
DMA/lnterrupt
Not applicable
Not applicable
Console/diskette
Yes
Vendor did not specify
Yes
Vendor did not specify
Yes
Yes
DMA/lnterrupt
Not applicable
Not applicable
Console, network
manager
Yes
No
Firmware
Firmware
IPL Method
Additional Software Supported
Download from host
No
Download from host
No
Firmware and software
combination
EEPROM
Not applicable
User Programmability
Yes, via user-selected
parameters
No
Yes, via user-selected
parameters
No
Yes, via console
Yes, via console
Some
Some
100%
100%
25%
None
Vendor did not specify
Vendor did not specify
Yes
Vendor did not specify
Vendor did not specify
Yes
Loc/rem Ipbk, internal,
prob. determination
Traffic load/line out./
error rates/event/trace
5,200 and up
Contact vendor
Contact vendor
7,200 and up
Contact vendor
Contact vendor
20,000
Contact vendor
Contact vendor
11,000 (16 ch./2 links)
Vendor did not specify
Vendor did not specify
No
1981
Vendor did not specify
ICOT, third party w/NCR
No
1981
Vendor did not specify
ICOT, third party w/NCR
No
1984
6,000
Infotron
No
October 1987
30
Infotron
(408) 433-3300
IBM 2780/3780 BSC
emulation.
"1987 information.
(408) 433-3300
(609) 424-9400
2780/3780 8SC emulatio Provides adapt. routing
"1987 information.
compo netwrk. mgmt.
features; bisync emula.
8t async/BSC/SDLC suprt.
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
8
Processor
Highest Line Speed Supported (bps)
Vendor did not specify
Effect on line Capacity, if All lines are Full-Duplex 28
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory 8t:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Tumkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data COllected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
APRIL 1988
esc,
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Firmware
Internal self-load
Vendor did not specify
(609) 424-9400
8 nodes/network; ANM800 Netwrk Mgr. (opt.),
mult. links up to 64K,
auto. alt. routing.
C13-010-158
Processors
Communications Processors
IBM
3705-S0
Models MS1
through MS3*
IIIVENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM S/370, 30XX, and
43XX; S/370 in 270X
Yes
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
PU Type within Network
Remote line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Yes
2
2
270X/370X
-
No
Not applicable
No
No
No
No
No
SNA
Communications line Capacity:
No. of Half-Duplex Lines Physically Attachable to
16
Processor
Highest line Speed Supported (bps)
57.6K
Effact on line Capacity, if All lines are Full-Duplex Capacity halved
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic line Reconfig.
Interface to Ethemet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Mamory Word Siza, bits
Main Memory Storage Capecity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
DMA
DMA
DMA
None
-
Software
Yes
ivENDOR PHONE NUMBER
COMMENTS
28 Std.-l,2; 60 w/expan. unit; 16 std-ll, 12
64K
None
Yes
LRC, CRC
Yes, via optional soft.
No
Yes
Yes
No
Yes
-None
Yes
36,600 (M81)
219
1,465 (2 -yr. lease);
1,721 (rental)
Yes
August 1981
Vendor did not specify
IBM
Contact local IBM rep.
'IBM no longer markets
these models.
ISM
3725
IBM S/370, 43XX, 937X,
3033, 308X, 30S0
Yes
Yes
8
8
270X and 3705 with EP
Yes
16
8
Yes
-
-
Yes
8
No
No
No
No
No
SNA
512
256K (LiC Type 4B)
None
1.544M
None
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
Yes
LRC and CRC
Yes, via optional soft.
No
-
Yes
Yes
Proprietary
,
Block
"-
-
Yes, up to 150 meters
Yes
Yes
Yes
DMA
DMA
DMA
Software
Internal self-load
ACF/NCP V5, EP, NTO,
ACF/VTAM, NetView,
ACF/SSP, X.25 NSF R2
Yes
Yes
None
Yes
Yes
36,500/26,00 (Mod. 1/2)
175 (1); 142 (2)
From 60,500 to 75,000
2,605 (1); 1,855 (2)
Contact vendor
From 3,030 to 4,020
From 125,000 to lSS,OOC
Contact vendor
From 12,500 to 18,800
No
1986-1. 2; 1987-11,1"
Vendor did not specify
IBM
No
1983
Vendor did not specify
IBM
No
March 1988 (3745-210)
New
IBM
Contact local IBM rep.,
3721 expansion unit expands capabilities of
3720; Models 1,2,11,
and 12.
Contact local IBM rep.
HONE Configurator CF3725 should be consuited for actual no.
of operable lines.
Contact local IBM rep.
3745-410 is scheduled
for September 1988.
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
/
-4 to 8M (per CCU)
DMA
DMA
DMA
FEP console
-
"'-
Yes
Unlimited
No
No
No
No
No
SNA, X.25
256 w/ 3726 expansion
Proprietary
18
256K-3M
Block
./
ISM
3745
IBM S/370 (except models 115 and 125), 303X,
Yes
Software
Software
Internal self-load
ACF/NCP, NTO, NPSI, Nfl! Internal self-load
NPDA, ACF/TCAM, EP R3 NCCF, NPDA, ACF/NCPEP R4, NetView
PEP, EP/3725
Yes
Yes
Yes
Yes
None
None
Yes
-
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
-
Yes
4
No
No
No
No
No
SNA
DMA
DMA
DMA
FEP console
User Programmability
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Yes
4
4
Yes
Proprietary
18
1M (expand. up to 2M)
Block
Proprietary
18
256K
Block
Software Separately Priced
Data Collected
J>
Yes
LRC and CRC
Yes, via optional soft.
No
Download from host
NCCF, NPDA
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
IBM 43XX, 303X, 308X,
309X
Yes (Models 1 & 11;
Models 2, 12 via phone)
Yes
No
Yes
No
Yes
No
No
No
No
Yes
IPL Method
Additional Software Supported
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
ISM
3720
~
APRIL 1988
C13-010-159
Processors
Communications Processors
KMW Systems.
Auscom 8911 A
Channel Interface
VENDOR AND MODEL
COMPUTER SVSTEMS INTERFACED
Manufacturers and Models
Lemcom Systems
Communications
Micro Controller 4
Lemcom Systems
Communications
Micro Controller 8
Lemcom Systems
Communications
Micro Controller 32
IBM mainframes. plugcompatible hosts
Ves (thru channel)
IBM S/360. S/370,
30XX, 43XX, & compat.
Ves
IBM S/360, S/370,
30XX, 43XX, & compat.
Ves
No
1
1
3274(lA/1D),3803,
3272
PU Type within Network
Vendor did not specify
Remote Line Concentrator:
No
Maximum No. of Hosts Served by One Concentrator Not applicable
Host-Independent Network Processor
Yes
Host Channel Extender
No
Terminal Controller
No
Store-and-Forward Message Switching Processor
Yes
Distributed Processing Node
No
Network Architecture Compliance
Various
Ves
1
1
270X, 370X, EP, custom
Ves
Ves
1
1
1
1
270X/370X, EP, custom. 270X/370X, EP
Not applicable
No
Not applicable
No
No
No
No
No
Not applicable
Not applicable
No
Not applicable
No
No
No
No
No
Not applicable
Not applicable
No
Not applicable
No
No
No
No
No
Not applicable
4
8
8
57.6K
None
57.6K
None
57.6K
None
No
No
No
Yes
No
No
No
No
No
No, custom
No
No
No
No
Custom
No
No
No
No
Custom
Yes, ASCII to EBCDIC
Yes
No
No
Yes, ASCII to EBCDIC
Parity ck. w /retran.
Yes
Yes
ASCII to EBCDIC
Parity ck. w/retran.
Yes
Yes
ASCII to EBCDIC
Parity ck. w /retran.
Yes
Yes
DEC LSI 11/73
16
1M
Block
Motorola 6800
8
40K
Byte/block
Motorola 6800
8
80K
Byte/block
Motorola 6800
8
80K
Byte/block
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Tape cartridge, disk,
diskette
No
Yes
Interrupt
None
None
FEP console
Interrupt
None
None
FEP console
Interrupt
None
None
FEP console
Yes
No
Ves
No
Yes
No
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
112
Processor
Highest Line Speed Supported (bps)
1.544M
Effect on Line Capacity, if All Lines are Full-Duplex Vendor did not specify
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-lnitiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SVSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
IBM S/360, S/370,
30XX, 43XX, & compat.
Ves
Software
Firmware
Firmware
Firmware
IPL Method
Additional Software Supported
Manual load from tape
Vendor did not specify
Internal self-load
Problem determination
aids
Intemal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
User Programmability
Yes
Yes
Yes, via user-selected
parameters
Utilities only
Ves, via user-selected
parameters
Utilities only
Yes, via user-selected
parameters
Utilities only
50%
None
None
None
Yes
No
Loc/rem loopback, inter
diag., prob. determ.
Trace
Loc/rem. Ipbk, internal
diag., prob. determ.
Trace
Rem/loc Ipbk., internal
diag., prob. determ.
Trace
20,000
300/mo.
No
9,000
Contact vendor
Contact vendor
10,000
Contact vendor
Contact vendor
10,000
Contact vendor
Contact vendor
No
1980
2.000
KMW
No
March 1977
400
National Advanced Sys.
No
November 1980
75
National Advanced Sys.
No
November 1980
75
National Advanced Sys.
(512) 338-3000
Full programmable IBM
channel interface.
(602) 944-1543
Microprocessor-directed
FEP; front-end polling
and console support
avail.; OEM discounts.
(602) 944-1543
Microprocessor-directed
FEP; front-end pollin9
and console support
avail.; OEM discounts.
(602) 944-1543
Microprocessor-directed
FEP; front-end polling
and console support
avail.; OEM discounts.
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
APRIL 1988
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-160
Processors
Communications Processors
Lemcom Systems
Distributed Network
Processor Series
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM S/360, S/370,
30XX, 43XX, & com pat.
Yes
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Ves
32
32
270X/370X, EP, 370X BS(
SNA/SDLC, 370X/37X5
PU Type within Network
PU Type 2
Remote Line Concentrator:
Yes
Maximum No. of Hosts Served by One Concentrator 32
Yes
Host-Independent Network Processor
Yes
Host Channel Extender
Terminal Controller
Yes
Store-and-Forward Message Switching Processor
Yes
Distributed Processing Node
No
Network Architecture Compliance
SNA, OSI, internal
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
3,000
Processor
64K
Highest Line Speed Supported (bps)
Effect on Line Capacity, if All Lines are Full-Duplex Load dependent
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
IPL Method
Additional Software Supported
User Programmability
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
Micom
MB3-XAP
Micom
MB3-BSC
Most vendors via X.25
Most vendors via X.25
Yes
Ves
No
Not applicable
Not applicable
3270 BSC, DSP
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
16
Yes
No
Yes
No
No
X.25, BSC
Not applicable
Yes
22
Yes
No
No
No
No
X.25
NCR Comten
Comten 3695
NCR 8500/8600, IBM 360
370,303X, 308X, 43XX
Yes
Yes
8
8
270X,370X,NCP,SNA/
SDLC, 3270 BSC
PU Type 4, PU Type 5
Yes
8 concurrently
Yes
No
No
Yes
No
SNA, BSC, X.25
4
24
512
9600
None
9800
None
256K
More than 9.6K-halved,
less than 9.6K-none
Yes
Yes
Yes
Planned
BSC-SDLC, Async-3270,
SDLC-BSC
ASCII to EBCDIC
Parity, LRC-CRC
Yes, 110 to 19.2K bps
Yes
Yes
Yes
Yes
No
3270 BSC to X.25
Ves
Yes
Yes
No
Async to X.25
Yes
Yes
Yes
No
Async to 3270 BSC
ASCII to EBCDIC
Parity ck. w /retransmit
No
Yes
Baudot to ASCII
Parity ck. w/retransmit
Yes
Yes
ASCII to EBCDIC
Parity, LRC-CRC detect.
Yes, 110 to 9600 bps
Yes
Motorola 6809E
8
15M
Byte, block
Z80B
512K
8K
Byte
Z80B
512K
8K
Byte
Proprietary
32
4MB
Byte or block
DMA/lnterrupt
DMA/lnterrupt/bubble
Vendor did not specify
FEP console, bubble
memory, patch panel
Yes
Yes
Interrupt
Interrupt
Interrupt
Yes
Interrupt
Interrupt
Interrupt
Ves
Yes
Ves
Ves
Ves
Interrupt
DMA
DMA
Hard disk, diskette,
FEP console, printer
Yes
Ves
Firmware
Firmware
Software
Internal self-load
No
Internal self-load
No
Manual load from disk.
NCR Comten networking
& connectivity software
Yes, via user-selected
parameters, console
All
No
No
All
All
Yes, via user-created
programs
All
25%
All
All
Info. not available
Rem/loc. Ipbk, prob.
determ., internal diag.
Traff. load/line out./
link hit/error/events
Ves
Yes
Yes
Yes
Intern. diag., prob.
determ., port/line stat
Traffic/line out./1ink
load/stat/trace/events
15,00
Contact vendor
Contact vendor
3,740
Contact vendor
Contact vendor
2,290
Contact vendor
Contact vendor
124,000
473
6,176
No
March 1981
725
National Advanced Sys.
No
1987
50
Independent distributors
No
1987
1,000
Independent distributors
No
1986
Info. not available
NCR Comten
(602) 944-1543
Dist. MPU FEP; up to
256 MPUs prog. to do
var. comm. proc. func.,
front-end polling.
(805) 583-8600
(805) 583-8600
(612) 638-7944
Users can connect to
IBM, X.25 and/or mixed
vendor networks.
Firmware and software
combination
Internal/manual/bubble
Vendor did not specify
© 1988 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBliED
APRIL 1988
C13-010-161
Processors
Communications Processors
:{
NCR Comten
Comten 5620XP
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NCR Comten
Comten 5660
No
IBM and plug-com patible mainframes
Ves
Ves
8
8
270X. 370X/37XP. NCP,
EP 3270 BSC
PU Type 4. PU Type 5
Ves
8 concurrently
Ves
No
No
Ves
No
SNA. X.25. BSC
No
Not applicable
Not applicable
Not applicable
Ves
4
2
CTCA
PU Type 5
Ves
16
Ves
No
PC controller
No
Ves
SNA
Not applicable
No
Not applicable
No
Ves
No
No
No
SNA
1.024
16
8
256K; mult. TIs via mux
None
64K
None
6M (T2)
Capacity halved
Ves
Ves
Ves
No
Ves. async to 3270 BSC
Ves
Ves
Ves
No
Ves. async to 3270 BSC
Ves
Ves
Ves
No'
No
Ves
No
No
No
No
ASCII to EBCDIC
parity. LAC-CRC detect.
Ves
Ves
ASCII to EBCDIC
Parity. LRC-CRC detect.
Ves
Ves
No
Ves
No
No
No
ARQ-CRC
No
Not applicable
Proprietary
32
4M
Byte or block
Proprietary
32
16M
Byte or block
Intel
16
1M to 3M
Not applicable
Proprietary
Proprietary
Vendor did not specify
Block
Interrupt
DMA
DMA
FEP console. disk.
printer
No
Ves
Interrupt
DMA
DMA
FEP console. diskette.
disk. printer
Ves
Ves
DMA/lnterrupt
Not applicable
Not applicable
Not applicable
DMA/lnterrupt
Not applicable
Not applicable
FEP console. PC
Ves
Ves (future plans)
Ves
No
Software
Software
Software
Firmware and software
combination
Internal self-load
None
IBM 360/370. 303X. NCR IBM 360/370. 303X.
8500/8600. 308X. 43XX 308X. 43XX. & compat.
Ves
Ves
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Ves
2
2
270X/370X. SNA/SDLC.
3270 BSC. NCP. EP
PU Type within Network
PU Type 4. PU Type 5
Remote Une Concentrator:
Ves
Maximum No. of Hosts Served by One Concentrator 2 concurrently
Host-Independent Network Processor
Ves
Host Channel Extender
No
Terminal Controller
No
Store-and-Forward Message Switching Processor
Ves
Distributed Processing Node
No
Network Architecture Compliance
SNA. X.25. BSC
Communications Une Capacity:
No. of Half-Duplex Lines Physically Attachable to
64
Processor
Highest Line Speed Supported (bps)
64K
Effect on line Capacity. if All lines are Full-Duplex None
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SVSTEM CHARACTERISTICS
Processor
Main Memory Word Size. bits
Main Memory Storage Capacity. bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications lines
Mass Storage
Other Peripherals
I/O. Back-Up. and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
NTX Communications
NTX 3800
Model 2 Series
Netlink Inc.
Network SNA-Hub
Most vendors
IPL Method
Additional Software Supported
Manual load
Download from host
Manual load
NCR Comten networking 8 NCR Comten networking 8 None
connectivity software
connectivity software
User Programmability
Ves. via user-created
programs
All
Ves. via user-created
programs
All
Configuration macros
Some
Ves. via user-selected
parameters
All
Info. not available
Info. not available
25%
None
Intem. diag.• prob.
determ .• port/line stat
Traf load/line out/link
load/ stat/events/trace
Intem. diag .• prob.
determ .• port/line stat
Events/stat/trace/link
load/traf load/line out
ROM/RAM-based. NPDA.
NetView. Natmaster
Ves
Loc/rem Ipbk. internal.
prob. determ .• NetView
Traff. load/line out/
errors/events/In. hits
22.600
140
1.324
310.000
711
15.075
15.000
Vendor did not specify
Vendor did not specify
76.000
400
Not applicable
No
1987
Info. not available
NCR Comten
No
1986
Info. not available
NCR Comten
No
1987
Vendor did not specify
Netlink
No
1986
Proprietary
NTX
(612) 638-7944
Allows users to connect
to 18M. X.25 and/or
mixed vendor networks.
(612) 638-7944
Allows users to connect
to IBM. X.25 and/or
mixed vendor networks.
(919) 878-8612
SNA concen./router to
IBM hosts or hosts sup.
SNA; routing by user;
'interf IBM Token Ring.
(408) 747-1444
Supports multiple Tl
links in pt-to-pt or
multipoint config.
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Tumkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration. Including All Hardware
Components Required for 8asic Operation:
Purchase Price. $
Monthly Maintenance. $
Monthly Lease/Rental. $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
APRIL 1988
© 1988 OATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-162
Processors
Communications Processors
Paradyne
Pix/Pixnet
Periphonics
Voicepac
Periphonics
VoiceBox
IBM S/370, 30XX,
43XX, and compatibles
Yes
IBM S/370, 43XX, 30XX, Most major vendors
and compatibles
Yes
Yes
Most major vendors
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Yes
1
Multiple
Not applicable
Yes
2
Multiple
Not applicable
Yes
3
3
370X/37X5, 3270 BSC
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Not applicable
Yes
Multiple
Yes
Yes
Yes
No
Yes
None
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct Attachment to Host
Paradyne
Pixnet-XL
Yes
Not applicable
Yes
Multiple
Yes
Yes
Yes
No
No
OSI-modeled
Yes
7
7
370X/37X5, SNA/SDLC,
3270 BSC
PU Type 2
Yes
7
Optional
Yes
Yes
No
Yes
SNA
PU Type 2
Yes
3
Optional
Yes
Yes
No
Yes
SNA
16
104
32
2.048M
None
9600
Minor
9600
Minor
Yes
Yes
Yes
No
Async/3270, PC/3270
Yes
Yes
Yes
No
Async/3270, PC/3270
Yes
Yes
Yes
No
Async to 3270 BSC
No
Yes
Yes
No
Async to 3270 BSC
ASCII to EBCDIC
Yes
Yes
No
ASCII, EBCDIC
CRC
Yes
No
ASCII to EBCDIC
All industry standards
Yes
Yes
ASCII to EBCDIC
All industry standards
Yes
Yes
Proprietary
16
128K
Byte
Proprietary
16
4M
Block, byte
LSI 11/23; LSI 11/73
16
320K
Byte
LSI 11/23
16
128K
BYte
DMA/lnterrupt
None
DMA/lnterrupt
Mag. tape; console
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Diskette, console
Interrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, diskette
Interrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, diskette
Yes
No
Yes
No
Yes
Yes
Yes
No
Firmware and software
combination, hardware
Intern. self-load, man.
Utilities
Firmware and software
combination
Internal
Utilities
Proprietary software
Proprietary software
IPL Method
Additional Software Supported
Download or disk load
I/O Gen, Pave, Param,
Utalk
EPROM based
None
User Programmability
Self-configuring
NO,vendorsupported
No
Software Separately Priced
None
None
Yes, voice dialog and
basic edit functions
All
All
All
75%
40%
Communications Line Capacity:
13
No. of Half-Duplex Lines Physically Attachable to
Processor
56K (per line)
Highest Line Speed Supported (bps)
Effect on Line Capacity. if All Lines are Full-Duplex None
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
All
Yes, internal testing
Yes, internal testing
Yes
Yes
Yes, local and remote
loopback
Traffic loading
Yes, local and remote
loopback
Traffic loading
From 30,000
Contact vendor
Contact vendor
From 30,000
Contact vendor
Contact vendor
28,000
250 min .. variable
Variable
20,000
Approx.200
Variable
No
April 1976
Over 6,000
Paradyne
No
March 1985
Over 500
Paradyne
No
1981
400
Peri phonics
No
1983
40
Peri phonics
(813) 530-2000
Permits remote peri pherals & CATs to access
mult. IBM hosts/applic.
as loc. attac. devices.
(813) 530-2000
Allows rem. peripherals
CRTs, etc. to access
IBM hosts as locally
attached devices.
(516) 467-0500
Handles data & voice
interchang. via single
I/O port; can COnvert,
concentrate Prot./code.
(516) 467-0500
Solid state unit can
concentrate, convert
protocol & code; serve
as remote network node.
© 1988 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1988
C13-010-163
Processors
Communications Processors
VENDOR AND MODEL
Peri phonics
VoiceStar
46XX
Periphonics
VoiceStar
47XX
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major vendors
Most major vendors
Most major vendors
Most major vendors
Yes
Yes
No
No
Yes
7
7
370X/37X5, SNA/SDLC,
3270 BSC
PU Type 1, PU Type 2
Yes
7
Yes
Yes
Yes
Yes
Yes
SNA
No
Not applicable
Not applicable
No
No
Not applicable
Not applicable
No
No
Yes (packet switch)
400
No
No
Yes
No
No
SNA, BSC, OSI, X.25,
DECnet
Not applicable
Yes
400
No
No
Yes
No
No
SNA, BSC, OSI, X.25,
DECnet
96
34
448
9600
Minor
64K
Halved
230K
Halved
Yes
Yes
Yes
Yes
Async to 3270 BSC
Yes
Yes
Yes
Yes
Async to 3270 BSC
ASCII to EBCDIC
All industry standards
Yes
Yes
ASCII to E8CDIC
All industry standards
Yes
Yes
Yes
Yes
Yes
No
Async to X.25, SDLC to
X.25
No
LRC-CRC detect, Parity
Yes, 50 bps-19.2K bps
No
Yes
Yes
Yes
No
Async to X.25, SDLC to
X.25
No
LRC-CRC detect., parity
Yes
Yes
Multi 68000, LSI 11
32 ECC; 16 ECC
Up to 3M
2M or 4MB
Multi 68000, LSI 11/73
32 ECC; 16 ECC
Up to 6M
2M or 4 bytes
MC 68010
16
4M
Byte or block
MC 68020
32
16M
Byte or block
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, disk,
diskette. tape
Yes
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, disk,
diskette. tape
Yes
Yes
Interrupt
DMA
DMA/lnterrupt
Removable disk, printer
and diskette
Yes
Yes
Interrupt
DMA
Interrupt
Diskette, disk, printer
and magnetic tape
Yes
Yes
Realtime, UNIX based
Realtime, UNIX based
Software
Software
Hard disk
Voice dialog utility,
reI. dbms. Pave. Utalk,
Param, high level lang.
Yes, via user-selected
parameters
All
Hard disk
Voice dialog utility,
rei. dbms, Pave. Utalk,
Param, high level lang.
Yes, via user-selected
parameters
All
Downld. from host, disk
Pascal, C, Assembler
Disk, downld. from host
Pascal, C, Assembler
Yes, via user-selected
parameters; user-prog.
Some
Yes, via user-selected
parameters, programs
Some
100%
100%
75%
None
Yes, local and remote
loopback
Traffic loading
Yes, local and remote
loopback
Traffic loading
Intern. diag., prob.
deterrn., port/line stat
Traf load/line out/link
load/stat/ errors/events
Intern. diag, port/line
status, prob. determ.
Link load/stat/errors/
events/account
65,000
Approx.650
Variable
136,000
Contact vendor
Variable
15,000
By quote
None
Vendor did not specify
By quote
None
No
1983
95
Periphonics
No
1985
Info. not available
Peri phonics
No
March 1987
280+
Telematics
No
June 1988
New product
Telematics
(516) 467-0500
Transaction processing
sys. w / voice response,
hand-held term., PC, &
POS device support.
(516) 467-0500
High capacity & thruput
transact. process. sys.
w /voice resp., hand-hid
term., PC/POS support.
(305) 772-3070
Other data collecterd
includes node/link/soft
ware status and
accounting.
(305) 772-3070
(
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
Yes
3
4
370X/37X5, SNA/SDLC,
3270 BSC
PU Type within Network
PU Type 1, PU Type 2
Remote Line Concentrator:
Yes
Maximum No. of Hosts Served by One Concentrator 4
Host-Independent Network Processor
Yes
Host Channel Extender
Yes
Terminal Controller
Yes
Store-and-Forward Message Switching Processor
Yes
Distributed Processing Node
Yes
Network Architecture Compliance
SNA
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
50
Processor
Highest Line Speed Supported (bps)
9600
Effect on Line Capacity, if All Lines are Full-Duplex Minor
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
IPL Method
Additional Software Supported
User Programmability
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
(
VENDOR PHONE NUMBER
COMMENTS
APRIL 1988
Telematics
NET 25 Series 200
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Telematics
NET 25 Series 5000
C13-010-164
Processors
Communications Processors
Tri-Data
Netway 1500
VENDOR AND MODEL
COMPUTER SVSTEMS INTERFACED
Manufacturers and Models
Direct Attachment to Host
Tymnet
Micro-Engine
Most major vendors
Most major vendors
Most major vendors
Most major vendors
No
No
No
No
Not applicable
Not applicable
Not applicable
No
Not applicable
Not applicable
Not applicable
Not applicable
Ves
Configuration dependent
Ves
No
Yes
No
No
Tymnet proprietary X.26 based
Not applicable
Ves
Configuration dependent
Ves
No
Ves
Ves
No
Tymnet proprietaryX.26 based
Configuration dependent
Configuration dependent
74K
None
74K
None
No
No
Not applicable
Not applicable
Not applicable
Not applicable
SNA/SDLC, 3270 BSC, Un Not applicable
scope, VIP7800
PU Type within Network
PU Type 2
Not applicable
Remote Line Concentrator:
Ves
Ves
Maximum No. of Hosts Served by One Concentrator 4
Configuration dependent
Host-Independent Network Processor
Ves
Ves
Host Channel Extender
No
No
Terminal Controller
Ves
Ves
Store-and-ForWard Message Switching Processor
No
No
Distributed Processing Node
No
No
Network Architecture Compliance
SNA, X.26, BSC
Tymnet proprietary X.26 based
Communications Line Capacity:
No. of Half-Duplex Lines PhYSically Attachable to
4
Configuration dependent
Processor
Highest Line Speed Supported (bps)
66K
19.2K
Effect on Line Capacity, if All Lines are Full-Duplex None
None
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SVSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.26 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
Tymnet
Engine
No
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to .Ethernet LAN
Protocol Conversion
Tymnet
Mini-Engine
Ves
Ves
Ves
Ves
Async-3270 8SC, asyncX.26, async-uniscope
ASCII to EBCDIC
Parity check w /retrans
No
Ves
Ves
Ves
No
No
Ves, contact vendor
Ves
Ves
Ves
Ves (internodal)
Ves, contact vendor
Ves
Ves
Ves
No
Ves, contact vendor
ASCII, Baudot, EBCDIC
Check sum w / retrans.
Ves
Ves
ASCII, Baudot, EBCDIC
Check sum w / retrans.
Ves
Ves
ASCII, Baudot, EBCDIC
Check sum w / retrans.
Ves
Ves
64180
8
612K
Byte
Tymnet proprietary
32
1M
Byte
Tymnet proprietary
32
1M
Byte
Tymnet proprietary
32
4M
Byte
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Disk
Interrupt
Not applicable
Not applicable
None
DMA/lnterrupt
[)MA/lnterrupt
DMA/lntertupt
Disk, tape
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Disk and tape
Ves
Ves
Ves
Ves
Ves
Ves
Ves
Ves
Software
Software with firmware
assist
Auto download-node/host
Various interface
software products
Software with firmware
assist
Auto. download-Eng/host
Various interface
software products
Software with firmware
assist
Auto down-disk/Eng/host
Various interface software products
IPL Method
Additional Software Supported
Internal self-load
Vendor did not specify
User Programmability
Ves, via user-selected
parameters
All
Ves, via user-selected
parameters
All
Ves, via user-selected
perameters
All
Ves, via user-selected
parameters
All
90%
100%
100%
100%
Internal, prob. daterm.
port/line status.
Port stat., traffic Id,
line outages, events
Remotely accessible
software oper. monitors
Node/link/soft.-status,
loading, statistics
Ves, remotely accessible soft. op. monitors
Node/link/softwarestatus, load., statist.
Remotely accessible
software oper. monitors
Node/link/softwarestatus, load., statis.
7,600
Contact vendor
Contact vendor
Vendor did not specify
Contact vendor
Contact vendor
Vendor did not specify
Contact vendor
Contact vendor
Vendor did not specify
Contact vendor
Contact vendor
Ves
April 1986
76
Tri-Data
No
1983
2,000+
Tymnet
No
1981
1,000+
Tymnet
No
1978
1,000+
Tymnet
(40B) 746-2900
Supports Coax A, SSI,
ASCII term. to IBM/HPJ
Unisys/Honeywell/DEC w/
univer. printer sharing
(408) 922-0260
Sold as a node in a
complete network,
compatible with
Tymnet's public netwrk.
(408) 922-0260
Sold asa node in compo
netwrk, compatible w /
Tymnet's pub. netwrk.,
avail. in dual config.
(408) 922-0260
Sold as a node in compo
network; compat. w/
Tymnet's pub. network;
avail. in dual config.
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease IRental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08076 USA
REPRODUCTION PROHIBITED
APRIL 1988,
C13-010-165
Processors
Communications Processors
Tymnet ATC
(Asynchronous Terminal
Concentrator)
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
Vendor did not specify
Most major vendors
No
No
No
Not applicable
Not applicable
Not applicable
No
Not applicable
Not applicable
3270 BSC
Not applicable
Yes, terminal only
Configuration dependent
Yes
No
Yes
No
No
Tymnet proprietary,
X.25 based
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
10
Processor
Highest Line Speed Supported (bps)
9600
Effect on Line Capacity, if All Lines are Full-Duplex None
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexihg
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
Yes
16
16
3270 BSC, 3270 SNA, SNt
SDLC, 2780/3780 BSC
PU Type 2
Yes
Any host in network
Yes (in it. host load)
No
No
Yes, custom. by users
No
SNA,BSC,OSI,X.25,DDN,
X.21 CKT-switched PDN
64K
None
64K (V.35), 250K (coax)
None
64K (V.35), 250K (coax)
None
No
Check sum w / retrans.
110 to 9600 bps
Yes
Yes
Yes
No
No
Async to 3270 SSC/to
X.25/to Uni.; SDLC-X.25
ASCII-EBCDIC, Baudot
LRC-CRC detect/correct
No
Yes
No
Yes
Yes
Yes (future plans)
Async to uniscope, 3270
to uniscope, uni.- 3270
ASCII to EBCDIC
Parity/ ARQ-CRC/LRC-CRC
Yes, 110 to 1800 bps
Yes
No
Yes
Yes
Yes (future plans)
Async to uniscope, 3270
to uni., uni. to 3270
ASCII to EBCDIC
Parity/ ARQ-CRC/LRC-CRC
Yes, 110 to 1800 bps
Yes
Tymnet-utilizing LSI-11
16
60K
Byte
Tymnet (proprietary)
32
1M
Byte, file, block
Unisys DCP /15
16
4M
Block
Unisys DCP/40
16
6M
Block
Interrupt
None
None
None
DMA/lnterrupt
Not applicable
Not applicable
Diagnostic console
Yes, diagnostic report
No
Yes
Yes
DMA
DMA
DMA
Disk/diskette/FEP console/printer/patch pan.
Yes
Yes
DMA
DMA
DMA
Console, disk, printer,
diskette
Yes
Yes
Firmware
Hardware with firmware
assist
Downld from host/manual
Various interface software products
Firmware and software
combination
Downld. from host, disk
Vendor did not specify
Firmware and software
combination
Host download, disk
Vendor did not specify
Yes, via user-selected
parameters
All
Yes, via user-created
programs
All
Yes, via user-created
programs
All
All
None
None
Yes, remotely accessible software op. mono
.Node/link/softwarestatus, load, statistic
Intern. diag., prog.
determ. port/line stat.
Traffic/line/stat/trace
account/errors/events
Loc/rem Ipbk, internal,
port/line, prob. deter.
Traffic load, line out.
line hit, events, err.
Loc/remt Ipbk, internal
diag., prob. deter.
Traffic/line hits/port
stat./err. rates/trace
Vendor did not specify
Contact vendor
Contact vendor
8,000
67
Contact vendor
No
1984
No
June 1988
New product
McDonnell Douglas Field
Service Co.
28,585 (includes soft.)
76
720 (5-yr lease, includes software)
No
April 1987
600
Unisys
108,815 (includes soft.)
595
2,319 (5-yr. lease, incilides software)
No
January 1980
3,500
Unisys
(215) 542-4011
Supports 52 lines in
remote concentrator con
fig.; packaging support
for 2 DCP/15s per cab.
(215) 542-4011
Up to 3.6 times more
powerful than DCP /15.
Telcon offers functions
such as auto switch.
Yes
Yes
No
No
Async to network
User Programmability
No
No
100%
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
APRIL 1988
Yes
1/enclosure, 2/cabinet
1/enclosure, 2/cabinet
SNA/SDLC, 3270 BSC,
3270 SNA, 27BO/3780
PU Type 1,Type 2,Type 4 PU Type 2, PU Type 4
Yes
Yes
Configuration dependent
Any host in network
Yes, (init. host load)
Yes
No
No
No
Yes
Yes, custom. by users
No
No
No
Tymnet proprietary,
SNA, BSC, OSI, X.25,
DDN, X.21 CKT-swit. PDN
X.25 based
Unisys Series 1100,
Series 2200
Yes
1,000
Software Separately Priced
VENDOR PHONE NUMBER
COMMENTS
Unisys Series 1100,
Series 2200
Yes
Unisys
DCP/40
48 as FEP
Internal self-load
None
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
(
Unisys
DCP/15
8
IPL Method
Additional Software Supported
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
Tymnet
Pico-Engine
400+
Tymnet
(408) 922-0250
Sold as a node in a
complete network; compatible with Tymnet's
public network.
(408) 922-0250
Product acts as a PAD,
concentrator, and
switch in office enc
vironment; batt. backup.
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
.
REPRODUCTION PROHIBITED
C13-010-166
Processors
Communications
Processors
.
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Unisys Series 1100,
Series 2200
Yes
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
Terminal-Initiated Applications Switching
Comm. Processor-Initiated Dynamic Une Reconfig.
Interface to Ethemet LAN
Protocol Conversion
Code· Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data. Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
IPL Method
Additional Software Supported
User Programmability
Software Separately Priced
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABILITY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental, $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
Unisys
B974
Unisys
CP9585
Unisys B2000, B3OO0,
All Unisys; IBM S/370,
B4OOO, V3OO/V5OO Serie 30XX, 43XX, & compat.
Yes
Yes
B2000, B3OO0, B40oo,
V300 Series
Yes
Yes
6
6
No
Yes
127
127
BSC,SNA
Yes
2
1
No
Vendor did not specify
Yes
6
No
Vendor did not specify
Yes
Yes
Yes
No
PU Type 2, PU Type 5
Yes
127
Yes
Vendor did not specify
Yes
Yes
Yes
BNA, SNA, X.25
Vendor did not specify
No
Vendor did not specify
No
Vendor did not specify
No
Yes
No
X.25
265
Vendor did not specify
96
56K
Not applicable
56K
None
56K
None
No
Yes
Yes
Yes (future plans)
Async to uniscope, uni.
to 3270, 3270 to uni.
ASCII to EBCDIC
parity /LRC-CRC/ ARQ-CRC
Yes, 110 to 1800 bps
Yes
Yes
No
No
Vendor did not specify
Yes
No
Yes
Yes
Vendor did not specify
Yes
No
Yes
No
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Unisys DCP/50
16
8M
Block
21mx
16
1.5M
Word
CP 9585 multiprocessor
Vendor did not specify
3.5M
Byte
Multiprocessor
8 bits
3.5M
Byte
DMA
DMA
DMA
Console/diskette/patch
panel/disk/printer
Yes
Yes
DMA/lnterrupt
DMA
Vendor did not specify
Console, disk, remote
diagnostics
Yes
Vendor did not specify
DMA
DMA
Vendor did not specify
Mag. tape, fixed/remote
disk, printers, card
Yes
Yes
DMA
Vendor did not specify
Vendor did not specify
Disk
Firmware and software
combination
Host download, diskette
Vendor did not specify
Firmware and software
combination
Host download, disk
NDL/DCS/switch/remote
SPO/switch-plus/ ASPEN
Firmware and software
Yes, via user-created
programs
All
Yes, via user-selected
parameters
All
Yes
No
Yes
All
None
Not applicable
Not applicable
None
Loc/rem. Ipbk, internal
diag, prob. determ.
Traffic load/line hits/
errors/ event/trace/inv.
Yes, local
Vendor did not specify
Vendor did not specify
Supplied utility
Vendor did not specify
Vendor did not specify
255,395 (include soft.)
634
5,629 (5-yr. lease, includes software)
No
December 1987
50
Unisys
64,050 (3680)
535
2,415
(3-yr. lease)
Yes
January 1978
300
Unisys
40,739
217
1,560 (3-yr. lease)
Vendor did not specify
Vendor did not specify
Vendor did not specify
Yes
1985
400
Unisys
Vendor did not specify
1984
Info. not available
Unisys
(215) 542-4011
Up to 9.6 times more
powerful than DCP/ 15;
Telcon offers functions
such as auto switch.
(313) 972-7000
Redundant system, backup host.
(313) 972-7000
(313) 972-7000
Yes
16
16
3270 SNA, 3270 BSC, SN~
SDLC, 2780-3780 BSC
PU Type within Network
PU Type 2
Remote Une Concentrator:
Yes
Maximum No. of Hosts Served by One Concentrator Any host in network
Host-Independent Network Processor
Yes (init. host load)
Host Channel Extender
No
Terminal Controller
No
Store-and-Forward Message Switching Processor
Yes, custom. by users
Distributed Processing Node
No
Network Architecture Compliance
SNA/BSC/OSI/X.25/DDN/
X.21 CKT-switched PDN
Communications Une Capacity:
No. of Half-Duplex Lines Physically Attachable to
976
Processor
Highest Une Speed Supported (bps)
64K (V.35), 250K (coax)
Effect on Line Capacity, if All Lines are Full-Duplex None
VENDOR PHONE NUMBER
COMMENTS
Unisys
CP3680/
CP3680-01
Unisys
DCP/50
Firmware and software
combination
Internal self load
Downline load from host
NDL,GEMCOS,BNA,SNA Vendor did not specify
BSC
© 1988 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Yes
No
APRIL 1988
C13-010-167
Processors
Communications Processors
(
VENDOR AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct Attachment to Host
FUNCTIONAL CHARACTERISTICS
Front-end Processor
Max. No. of Hosts Channel-Attachable to Front-End
Max. No. of Active Hosts Supported Simultaneously
IBM Emulation
PU Type within Network
Remote Line Concentrator:
Maximum No. of Hosts Served by One Concentrator
Host-Independent Network Processor
Host Channel Extender
Terminal Controller
Store-and-Forward Message Switching Processor
Distributed Processing Node
Network Architecture Compliance
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/Demultiplexing
TerminaHnitiated Applications Switching
Comm. Processor-Initiated Dynamic Line Reconfig.
Interface to Ethernet LAN
Protocol Conversion
Code Conversion
Error Control
Automatic Transmission Speed Detection
Automatic Disconnect of Inactive Dial-Up Terminals
SYSTEM CHARACTERISTICS
Processor
Main Memory Word Size, bits
Main Memory Storage Capacity, bytes
Level of Data Unit Transferred across I/O Channel
Type of Data Transfer Supported between Memory &:
Communications Lines
Mass Storage
Other Peripherals
I/O, Back-Up, and Diagnostic Peripherals
Supported
Support for Remote Console
Support X.25 Level 3 Capabilities
Communications Operating Software:
Operating System Implemented in
Vendor did not specify
Vendor did not spscify
Vendor did not specifY
No
No
No
Yes
25
25
Yes
No
Not applicable
Unlimited
Vendor did not specify
No
Not applicable
Unlimited
Vendor did not specify
Yes
Not applicable
Unlimited
Vendor did not specify
PU Type 2, PU Type 5
Yes
Unlimited
No
Vendor did not specify
Yes
No
Yes
BNA, SNA, X.25
Not applicable
Yes
Unlimited
Yes
No
No
Yes
Yes
ISO 3309, Ethernet,
802.3
Not applicable
Yes
Unlimited
Yes
No
No
Yes
Yes
SNA, DECnet
PU Typs 2
Yes
Unlimited
Yes
No
Yes
Yes
Yes
SNA
Up to 8
Up to 8
Up to 8
2.048M
None
64K
None
64K
None
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
Yes
Yes
Yes
No
CRC-16
Not applicable
Not applicable
No
CRC-16
Not applicable
Not applicable
No
CRC-16
Not applicable
Not applicable
Multiprocessor
16
2M
Byte
MC 68010
32
1.5M
Block
MC 68010
32
1.5M
Block
MC 68010
32
1.5M
Block
DMA
Vendor did not specify
Vendor did not specify
Disk
DMA
DMA
Interrupt
Console
DMA
DMA
Interrupt
Console
DMA
DMA
Interrupt
Console
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Firmware
Software and hardware
combination
Internal self-load
Not applicable
Hardware and software
combination
Internal self-load
Not applicable
Hardware and softlll!are
combination
Internal self-load
Not applicable
All
Yes, via user-selected
parameters
Not applicable
Yes, via user-selected
psrameters
Not applicable
Yes, via user-selected
parameters
Not applicable
None
5%
5%
5%
Load from syst. or disk
Vendor did not specify
User Programmability
No
Software Separately Priced
NETWORK MANAGEMENT/CONTROL
CAPABIUTIES
Diagnostic Tests Supported
Data Collected
PRICING AND AVAILABIUTY
Minimum Configuration, Including All Hardware
Components Required for Basic Operation:
Purchase Price, $
Monthly Maintenance, $
Monthly Lease/Rental. $
Is Maintenance Bundled with Lease/Rental?
Date of First Delivery
Number of Systems Installed to Date
Serviced by
VENDOR PHONE NUMBER
COMMENTS
Vitalink
Communications
TransSDLC
A Series
IPL Method
Additional Software Supported
Approx. Proportion of Currently Installed
Systems Supplied As Turnkey Systems
Vitalink
Communications
TransUNK
Yes
Communications Line Capacity:
No. of Half-Duplex Lines Physically Attachable to
24
Processor
Highest Line Speed Supported (bps)
64K
Effect on Line Capacity, if All Lines are Full-Duplex None
(
Vita link
Communications
TransLAN
Unisys
CP2000
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Vendor did not specify
Vendor did not specify
Vendor did not specify
10,000 to 15,000
Not applicable
Not applicable
9,000 to 12,500
Not applicable
Not applicable
9,000 to 12,500
Not applicable
Not applicable
Vendor did not specify
1986
Info. not available
Unisys
Vendor did not specify
November 1984
1,600+
Vitalink
Vendor did not spacify
September 1986
Vendor did not specify
Vitalink
Vendor did not specify
September 1986
Vendor did not specify
Vitalink
(313) 972-7000
(408) 755-6130
(408) 755-6130
(408) 755-6130
•
APRIL 1988
© 1988 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
/
C13-010-101
Processors
All About Communications Processors
(
Until recently, it has been fairly easy to group various types
of data communications equipment into specific categories
according to their basic functionality. Devices that convert
digital signals into analog ones are modems, units that
combine data from many channels onto one channel are
multiplexers, and so forth. Integration is the byword of the
communications industry, and manufacturers have begun
to combine many functionalities in one system. Modems
incorporate multiplexing and/or protocol conversion, terminals contain modem chips, and larger systems integrate
switching and multiplexing, as well as provide gateways to
other networks. While the basic communications equipment categories remain, it is becoming increasingly more
difficult to pigeonhole new devices into them.
It has always been difficult to categorize communications
processors, because like newer integrated systems, they
perform many functions, but not always the same ones.
Therefore, the definition of a communications processor
varies greatly, depending upon who is giving it. While
network designers have one view of what a communications processor does, equipment manufacturers have another. Everything from an IBM 3725 to a four-port packet
assembler/disassembler (PAD) has been called a "communications processor."
From a network designer's point of view, a communications processor should be able to set up connections to
transmit and receive data, multiplex and demultiplex data,
frame and unframe messages, perform error correction and
protocol conversion, choose transmission routes, and collect performance and traffic statistics. This definition has
led many manufacturers to classify their protocol converters, PADs, terminal controllers, and stat muxes as communications processors. They claim that anything that can
connect terminal devices to communications networks and
maintain control over these devices through changing network conditions are comm processors. While this may be a
The term "communications processor" describes
not only a specific category of equipment. but also
includes a broad array of systems that perform one
or many communications processing functions in
addition to providing other services. We have narrowed our definition of communications processors to include multifunctional. intelligent systems that are dedicated to communications and
able to serve as nodes in the network. This generally includes three basic types of products: frontend processors. intelligent switches. and remote
concentrators.
In addition to defining communications processing. this report discusses comm processor design.
its place in modern network architectures. the
evolution of the communications processor. general advantages and restrictions of today's systems. and the state of the communications processor marketplace.
This report also includes comparison charts outlining the major characteristics of 84 communications processors from over 25 vendors.
designation on which marketing departments can develop
good ads, it is problematic in terms of defining equipment.
It is simply ridiculous to put an IBM 3725 and a protocol
converter in the same equipment category.
Several years ago, in an attempt to narrow the field of
devices that would be included in our comm processor
survey, we placed PADs and terminal controllers in a
protocol conversion systems tab that also included blackbox protocol converters, terminal emulators, and code and
speed converters. This was in keeping with our premise
that true communications processors, concentrators in- 1>
The Comten 5660 Communications Processor is three times faster
and offers more power and line connectivity than any SNA-compatible
communications processor available in the market.
APRIL 1987
© 1987 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS. CALL 1-800-328-2776
C13-01 0-1 02
Processors
All About Communications Processors
TABLE 1. COMMUNICATIONS PROCESSORS
FUNCTIONS.
Physical transmission and reception of'data
Data buffering and queueing
Multiplexing
,
Message framing and unframing
Control of transmission errors
,
,
Message sequencing
Protocol conversion
Message pacing and flow control
Message or packet assembly and disassembly
Route selection
Session establishment and disconnection
Formatting of data for use by specific host or terminal
applications
Reporting and logging of device or transmission errors or
failures
Fallback switching in case of host, device, or transmission
line failure
Gather and record network performance and traffic
statistics,
t> cluded, are involved in a dynamic process involving feedback from other intelligent devices in the network. Protocol
converters, PADS, and statistical multiplexers perform
basically static processes that do not change as conditions
change in the network.
Datapro defines a communications processor as a multifunctional, intelligent device dedicated to communications
and able to serve as control points, or nodes, in a data
communications network. It may serve as a front end to a
mainframe, as an intelligent switch, or as a remote concentrator. As a front-end processor, the communications processor serves as a locally attached peripheral device to one
or more large computers dedicated to applications processing, relieving them of the overhead involved in message
handling and network control. An intelligent switch routes
messages among the network's various end points and
participates in the network~s control and management either under the control of a master (usually front-end)
processor or as a peer of other intelligent switches. A
concentrator controls a community of terminals, clusters of
terminals, or distributed applications processors; gathers,
queues, and multiplexes their transmissions onto one or
more high-speed network trunks; and participates in the
network's control and management, again either under the
direction of a master processor or as a peer of other
concentrators and switches. (Table I lists the major functions of a communications processor in the typical
network.)
Using the network designer's definition would qualify two
devices as communications processors: the front-end processor and the network processor. While the front-end
processor connects directly to the host processor's block/
byte multiplexer or selector channels, the network processor is a standalone unit that is not host-dependent and has a
large degree of operating autonomy. Its primary function is
to provide a link between user terminal devices and the
front-end processor and/or other network processors.
Communications with the FEP is on the data link level.
While it does not carry on a dialogue with the FEP, it does
respond to FEP-initiated network signals.
While the above definitions are sound, we are finding that
pegging particular devices as communications processors is
still problematic. Packet switches, for example, often fit
quite nicely into our definition, but we cannot classify them
only as comm processors. We have concluded that one
must actually classify comm processing in terms of application and/or functionality. Ifa system performs many of the
functions normally considered part of the communications
processing function, it can be classified as a comm processor. We also recognize, however, that there is a small but
important class of equipment that belongs to the traditional
communications processing realm. This includes IBM
372X and NCR Comten front-end processors. IBM controls a majority of this market, and there are only a handful
of vendors that manufacture competing systems. Sperry
and Burroughs (Unisys) also manufacture communications
processors for their respective mainframes. Full product
reports on these systems are included within this tab.
Front-end processing is the most complex task a communications processor can perform. In a large, complex network
governed by one or more mainframe hosts, a front-end
must do all butthe last three functions (listed in Table I) in
the normal course of its operations, Intelligent switching is
slightly less complex, since the communications processor
acting as a dedicated switch need not carry on a running
dialogue with a host computer, and is not responsible for
the end-to-end establishment and disconnection of sessions. Still, an intelligent switch, in normal operation, must
perform all but the last five basic functions. An intelligent
switch differs from a simple switch, such as a port selection
and contention device, because it must monitor the network's traffic and performance, either under the control of
a master processor (usually a front end) or as a peer among
other intelligent switches and concentrators, and change its
behavior, notably the routing and pacing of messages,
according to the information it receives. A simple switch
simply establishes an information path according to, instructions it receives from a user or computer on one end of
the connection.
Concentration is the least complex task a communications
processor can perform, and communications processors
acting as concentrators can easily be confused with less
sophisticated, single-function devices such as statistical
multiplexers, protocol converters, packet assembler/disassemblers (PADs), and terminal cluster controllers. Indeed,
with the widespread use of microprocessors and the declining cost of silicon intelligence, many devices at the high
ends of these lines are beginning to approach the functional
breadth of true communications processors. The difference
is that true communications processing, concentration included, is a dynamic process involving feedback from other
intelligent devices in the network. Statistical multiplexing,
protocol conversion, and packet assembly/disassembly are
basically static processes that do not change as conditions
change on the network. An intelligent concentrator participates in the control of the network, either under the direction of a master processor or as a peer of other concentrators and switches, receiving status information from the
network and changing its behavior accordingly: accelerating or withholding transmissions, initiating diagnostic procedures for pathways and devices in its local domain, and
controlling access to the network from its locally attached t>
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2176
APRIL 1987
C13-010-103
Processors
All About Communications Processors
t> devices. Some sophisticated terminal controllers, notably
IBM's 3274s, can perform some or all of these functions. A
concentrator differs from a sophisticated terminal cluster
controller by its position in the network's hierarchy: a
concentrator can concentrate data from a number of cluster
controllers, while a cluster controller concentrates data
only from a number of individual terminals. As an example, consider the relative positions in an SNA network of an
IBM 3705 acting as a remote node (concentrator) and an
IBM 3274 within that concentrator's domain. A user can
build an entire network from intelligent concentrators
communicating with one another as peers, but cannot do
the same with cluster controllers.
COMMUNICATIONS PROCESSORS AND NETWORK
ARCHITECTURES
The implementation of network architectures is perhaps
the most important ongoing theme in the development of
data communications. In general, there are two kinds of
network architectures: those designed to provide communications among computers and terminals from a specific
vendor, and those designed to provide open communications regardless of the vendor of the communicating devices. Mainframe vendor architectures include IBM's
SNA, Honeywell's DSA, and Unisys' BNA and DCA. Open
architectures include the CCITT's X.25 packet switching
sPecification and several "transparent" network schemes
marketed by communications vendors. The communications processor is the most important element in both
vendor-specific and open architectures. In the following
paragraphs, we will use the International Organization for
Standard (ISO) reference model for Open Systems Interconnection (OSI) to examine the different roles that communications processors play in different kinds of network
architectures.
In network architectures designed by mainframe computer
vendors, the communications processor functions most
often as a front end, and controls communications in
conjunction with one or more software systems in the host
computer. In general, the front-end processor handles the
Data Link through Session layers of the ISO model, with
host software implementing the Presentation and Application layers. The balance varies from architecture to architecture. In Unisys' DCA the DCP-Series front end has
control over many Presentation-layer functions, while in
IBM's SNA, the host's access method, along with software
residing in the 327X terminal controllers, handles communications down to the Session layer, with the 37XX front
end acting almost as a channel-attached packet switch. The
range of control assigned to front-end processors in other
mainframe architectures varies between those extremes.
In all the mainframe architectures, the same communications processor models that serve as front ends can also
function as intelligent switches and as remote concentrators. In these functions, the communications usually appear in smaller configurations than in the front-end role.
Communications processors working in mainframe architecture can also perform another important function in
APRIL 1987
Infotron's 990 Network Processor supports tandem switching
and link load balancing. It provides an X.25 interface, as well as
a variety of protocols.
conjunction with any of the other three, that of an intelligent gateway. In this application, the communications
processor provides the interface between the mainframe
network and communications facilities outside the architecture, particularly public, packet switched data networks
using the X.25 protocols.
The function of a communications processor differs between the two kinds of open architectures. In a full-scale
open architecture such as X.25, the communications processor serves entirely as an intelligent packet switch, implementing the Data Link through Transport layers through a
uniform set of complementary protocols. Designed specifically for public data networks, the X.25 protocols provide
ultimately for the establishment of virtual circuits,· or logical paths through the network, for devices from any vendor. Communicating devices, computers or terminals, at
either end of the virtual circuit must handle the Session,
Presentation, and Application layers according to their own
protocols. Since, in a public network, the network provider
is responsible for network management, the X.25 communications processors in such a network carry a heavy load
of access, error, and class-of-service control, along with
many provisions for statistical recording of traffic and
usage data that can be sorted by individual user account.
Communications processors designed to function as
switches in public networks are the likeliest to support
high-capacity attached storage devices such as disk and
t>
tape drives.
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13·010·104
Processors
All About Communications Processors
--'-/
Front-end
Processor
1------;-----1
Concentrator
Intelligent
Switch
Front-end
Processor
Concentrator
Intelligent
Switch
r-------r----i
Concentrator
Front·end
Processor
Figure 1. A communications processor can function as aftont endfor one or more host computers, as an intelligent switching node not at·
tached directly to any applications equipment, or as a remote terminal concentrator.
t>Communications processors operating in full-scale X.25
configurations seldom perform a gateway function. The
user must provide compatibility with the network's standard protocols, either through an X.25 software package
that resides in a participating host or its front-end processor, or through a packet assembler/disassembler (PAD)
that handles the Physical and Data Link layers of the
architecture. Table 2 shows the protocols supported by
various vendors' communications processors.
Transparent architectures are offered by vendors of communications equipment as a low-cost alternative to mainframe architectures and full-scale X.25 implementations.
These architectures are usually stripped-down versions of
X.25 without much of the network administration and
class-of-service overhead necessary to operate a public or
very large private network. In these architectures, the communications processor functions primarily as a switching
concentrator, providing services at the Data Link, Network, and Transport layers. Most such concentrators have
evolved at the high ends oflines of statistical multiplexers,
adding the crucial routing and flow control features that
qualify them as communications processors. Some such
products offer integrated network management functions
such as error logging and performance statistics, but most
rely on a separate, complementary network management
system to provide these functions.
COMMUNICATIONS PROCESSOR DESIGN
The basic design of almost all communications processors
follows the same, three-tiered, hierarchical plan-a plan
that they share in general with their close cousins the digital
PBXs, and more generally with a number of other data
communications components.
The device's central processing unit (CPU) sits at the top of
the hierarchy along with its associated main memory; it
controls the communications processor's operation according to the rules and parameters of its operating software,
and, in front-end configurations, in conjunction with instructions from the host computer. In general, the CPU
performs the complex or dynamic tasks such as addressing,
route selection, protocol conversion, access control, session
establishment, application-level formatting, and error logging, and delegates the rote operations to subsidiary
components.
In most communications processors, some components
operating under the direction of the CPU perform general
functions involving the operation of the whole communications processor, while others perform functions dedicated to specific groups of lines. Among the former are the
host interfaces, the input/output (I/O) processors, the refer- t>
© 1987 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS. CALL 1·800·328·2776
APRIL 1987
C13-010-105
Processors
All About Communications Processors
Host
Computer
Host 1/0 }
Channel
I
I
I
Common Control
Components
Line Bases
Line Sets
L.-_~
Control and
Maintenance
Panel or
Console
Communications Lines
Figure 2. The diagram shows the hierarchical, bus-based architecture ofa typical communications processor. Such a processor may contain more than one host interface, several I/O processors, and many more line bases. Each line base serves communications lines ofa specific synchronization, speed, and protocol. Each line set serves lines with a specific physical interface. The modular arrangement ofline
bases and line sets on the processor bus allows easy configuration and reconfiguration.
J:> ence clock, and the operator interface. Among the latter are
the processor's line bases and line sets.
Communications processors configured as front ends must
have at least one host interface. The host interface handles
communications between the front-end processor and the
host's byte or block multiplexer, or selector channel. The
host interface buffers data from the front end's CPU,
assembles it into parallel bit streams of a format specific to
the attached host channel, and transmits it up the channel
to the host; for data coming from the host, it performs the
same process in reverse. The host interface's principal
function is conversion of data from the communications
processor's internal word size to that of the host computer.
Some communications processors contain one or more
input/output (I/O) processors that transfer data between
the CPU and attached storage peripherals, such as disk or
tape drives. In some cases, the I/O processors arbitrate
among the various line bases for access to main memory
and to the CPU, handling interrupts generated by the line
bases or host interfaces to gain the attention of the CPU, or
controlling the line bases' and host interfaces' access to
main memory. In communications processors with more
than one I/O processor, each I/O processor usually controls
a set complement of storage units or communications lines.
The reference clock generates a timing signal used by all
other components of the communications processor. In
many systems, reference timing is a function of the CPU.
APRIL 1987
Some systems have separate reference clocks for the timing
of signals at different data rates.
The operator interface allows a human operator to monitor
and control the communications processor and to run
diagnostic tests. In newer and more sophisticated systems,
the operator interface works under software control from a
dedicated console, which usually contains a CRT or similar
display unit and a printer for logging. In most communications processors, the operator interface works through a
front panel that contains a number of manual switches and
indicator lights.
All of the above-mentioned devices perform functions that
are shared among all communications lines; they sit just
below the CPU in the communications processor's internal
hierarchy. On the network side, the "business end" of a
communications processor, the line bases and line sets
complete the hierarchy.
A line base, sometimes called an attachment base, interface
base, or interface module, handles communications at the
Data Link layer between the communications processor
and a group of attached communications lines that share a
common synchronization pattern, line speed, and sometimes, protocol. Each line base usually contains a dedicated
microprocessor that performs such functions as framing
and stripping, message buffering, message sequencing, synchronization, and error detection under the direction of the
CPU. Most current communications processors accommo- J:>
© 1987 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13-010-106
Processors
All About Communications Processors
date from 8 to 32 line bases, each of which handles from
two to eight line sets.
A line set handles communications at the Physical layer
between its attached line base and from one to eight
communications lines. All the communications lines attached to a given line set must use the same physical
interface at roughly the same data rate. The line set handles
serialization of data and interface-level control signaling.
All the components of the communications processor communicate with one another over a parallel data bus, usually
located along the back plane or a side plane of the processor's cabinet. The physical bus architecture, made popular
in the design of minicomputers, allows for easy installation
and replacement of parts. In a hierarchical architecture
such as that of most communications processors, it also
makes for easy reconfiguration. To replace asynchronous
communications over voice grade lines with HDLC communications over wideband or satellite circuits for a 16-line
segment of a network, a user might need to replace only one
line base and eight line sets, rather than having to swap out
an entire front-end processor. The hierarchical design extends the communications processors' functionality over
time and helps to protect the user's investment in the face
of changing technology. Figure 2 shows the hierarchical
configuration of a generalized communications processor.
THE EVOLUTION OF THE COMMUNICATIONS
PROCESSOR
The communications processor as we currently know it
came into being in the mid to late 1970s, the result of the
merger of several separate developments in both communications and data processing. Its direct ancestors were hardwired communications controllers such as the IBM 270X
and Sperry Univac CCM, relatively unintelligent combinations of large multiplexers and cabling concentrators designed to perform only the basic, rote operations of communications handling. These devices provided a physical
map ofthe network for the host, basically allowing it to find
each physical line in its logical polling sequence and performing simple error notification for the host.
Two developments in the late 1960s provided the technical
base for the modern communications processor: the minicomputer and the ARPAnet. The minicomputer provided
a small, relatively inexpensive, software-controlled machine that could perform any of a number of functions
more efficiently than a mainframe, and incidentally also
provided the bus architecture that gives communications
processors their modularity and flexibility. The ARPAnet,
the first large-scale packet switched data network, provided
the fundamental design principles for all current data communications architectures. One of these principles was the
intelligent virtual circuit switch, the first functional communications processor.
A later development in minicomputer applications created
the distributed processor, a small computer, dedicated to
part of a larger application, that performed, as one of its
necessary functions, communications with its peers in a
distributed network. Distributed processing contributed
the idea of intelligent communications handling under
software control. Indeed, network architectures from such
minicomputer vendors as Digital Equipment Corporation
and Hewlett-Packard are applications oflater communications developments onto the framework of distributed
processing among minicomputers.
The lower cost of dedicated processing in small computers
and the increasing cost of mainframe processing power
made the idea of a dedicated small computer to off-load
intelligent communications handling from the mainframe
economically practical. The first intelligent front ends, such
as IBM's 3704, predate modern network architectures, and
to a large extent, made such architectures possible.
Paradyne's Pixnet-XL system extends the block or byte mu~ti
plexer channel of IBM mainframes to connect remote hIgh
speed devices.
In the late 1970s, IBM's SNA and the ISO's OSI model, the
earliest general network architectures, advanced the idea of
data communications as an entirely separate function from
applications processing, and of the network as a physical
entity separate from its participating hosts and terminal~.
The best way to implement a physically separate commUnIcations function is through a system of small computers
dedicated to communications. Such communications processors could be placed at the front end of the mainframe,
or could function independently as concentrators and
switches within their respective architectures.
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
C13-010-107
Processors
All About Communications Processors
J:>One further development produced the communications
processor as we know it today: the microprocessor. The
advent of cheap silicon intelligence allows designers to
implement the hierarchical scheme of the typical communications architecture in hardware, with dedicated microprocessors performing low-level functions and reporting to
larger and more complex processors at the higher levels.
Indeed, some line bases in present-day communications
processors are programmable, receiving downloads from
the units' CPUs that describe the protocol and synchronization each is to use. Some newer systems are composed
entirely of redundant, microprocessor-controlled modules,
each of which can perform any ofthe functions of any other
with the proper software load; such a processor is actually a
distributed communications network in a box.
(
The advent ofthe microprocessor has also begun to blur the
distinction between traditional communications processors and less broadly functional devices, such as multiplexers and terminal controllers, and has created a new class of
intelligent protocol converters dedicated to a task that was
once economical only as a function within a multifunctional communications controller. Now, even modems can
detect, report, and in some cases correct transmission
errors, and sense the conditions of transmission lines. The
old definition ofa communications processor as a computer that has been programmed to perform one or more
control and/or processing functions in a data communications network now includes everything from modems and
dedicated monitoring equipment up to the IBM 3725.
In answer to this shifting definition, Datapro offers a
section in Volume 2 of DATA PRO REPORTS ON DATA
COMMUNICA nONS, Tab C23, entitled Protocol Conversion Systems. In this section, the reader will find information on many product categories formerly covered in
this report: protocol converters, intelligent terminal controllers (with conversion capabilities), and PADs, to name
three.
ADVANTAGES AND RESTRICTIONS
The principal advantage of a communications processor as
a networking tool is the physical and logical separation of
the networking function from the application of its end
users. Whatever its architecture, such a network can function for any application, can grow in size without qualitative change to accommodate new applications, and can
accommodate new applications through the installation of
relatively standard, intelligent components. In simpler
terms, the user does not have to redesign and rebuild a
modular network to accommodate a change in the network's ultimate purpose.
(
\
Programmable, software-controlled communications processors are an especially handy tool in such standalone
networks because they can accommodate not only changes
in application but also the effects of technical progress. A
software-controlled communications processor with a good
design can survive several breakthroughs in networking
technique through relatively simple upgrades. The newer,
APRIL 1987
The DCP/15 from Unisys is the newest member of the DCP
communications processor family. It is a/ront-end processor for
smaller Series 1100 host computer networks.
microprocessor-controlled line bases, and even line sets,
provide an even more flexible buffer against obsolescence.
In operation, a network controlled by communications
processors can survive the total failure of one or more of its
host processors. In a multihost network, front-end processors can switch users from applications in a failed host to
similar or identical applications in a backup host, perhaps
elsewhere on the network. In a single-host network, a
functioning front end allows for a graceful degradation of
service in the event of a host failure, perhaps allowing users
time tll terminate their tasks before total system failure, or
allowing communications among distributed application
processors in the absence of the controlling host.
Also in operation, the communications processor still fulfills its original purpose; relieving the host of the overhead
generated in keeping track of a network. Today's networks
are orders of magnitude more complex than those of the
mid 1970s when the first communications processors appeared, and thanks to the ever lower cost of memory and
processing power, some oftoday's communications processors are bigger, faster, and more powerful than that era's
mainframes. They need to be.
Among the restrictions oftoday's communications processors are complexity and incompatibility. In an era of userfriendly hardware and software, the communications processor remains a device with which only a trained engineer J:>
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13-010-108
Processors
All About Communications Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED
Manufacturerl
Product Name
ASCII
async·1
Other
BitOriented
Protocols'
X.25
Packet
Level
TTY
IBM BSC
IBM
SOLC
Yes
Yes
Yes
No
GTE T elenet,
Tymnet, Datapac
-
No, PAD ext'!
No, PAD ext' I
No, PAD ext' I
No, PAD ext'!
No, PAD ext'l
No, PAD ext'l
No, PAD ext'l
No, PAD ext'l
No, PAD ext'!
No
No
No
Yes
Yes
Yes
-
Yes
No
Yes
Yes
Yes
LSI-X.25 Front-End
Yes
No
No
No
GTE Telenet.
Tymnet, Euronet
LSI-X.25 Int. Con cent.
Yes
No
No
Yes
Yes
LSI-X.25 Host Port
Concentrator
Yes
No
No
No
Yes
Same as above, and Telex
and Teletex
Century Analysis OSI
Yes
No
No
No
No
-
Chi Comm. Processors
Yes
Yes
No
Yes (HDLC)
Telenet
Computer Communications
CC-6
CC-8
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
No
No
GTE Telenet,
Tymnet
GTE Telenet,
Tymnet
Control Data
2551-3 & 2551-4
CDCNET
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Tymnet, Telenet,
Tymnet, Telenet
DCA
355
Yes
Yes
Yes
Yes
335
Yes
Yes
No
No
375
Yes
Yes, IBM
3270 BSC
No
No
GTE Telenet,
DEC DDCMP-trunk only
ITT, RCA
GTE Telenet
Tymnet. Datapac,
Uninet, Autonet.
PSS
Yes, Telenet,
Accunet, Cylix, PSS, Autonet
Tymnet, Uninet,
Transpac,
Datapac
Honeywell Datanet 8
Yes
Yes
No
Yes (HDLC)
GTE Telenet,
+ 10 DDNs
VIP, PVE, RCI, LHDLC
IBM
3705-80
3725
Yes
Yes
Yes
Yes
Yes
Yes
No
No
GTE Telenet
GTE Telenet
-
Icot
254
Yes
Yes
Yes
HDLC
Yes
257
Yes
Yes
Yes
HDLC
Yes
Amdahl 4705
Amnet
N6050
N6070
N7400
Cableshare
CSI Data Concentrator
CC-80/85
Other Protocols Supported
Uninet. Datapac
PSS, Transpac, Datanet,
Telepac, DATEX
Same as above, and Telex
and Teletex
Rem 1, NTR, Uniscope 100 &
200, UTS
Telex
Telex, 83B3
Telex, 83B3, PARS, SABRE,
ARINC
None
None
NCR 279,
Burroughs
NCR 279,
Burroughs
VISA, Tinet,
PIS
VISA, Tinet,
PIS
Infotron
990NP Network Processor
Yes
Yes
Yes
Yes
Yes
Virtually all are supported
KMW Systems
Auscom 8911 A
Yes
No
No
Yes
Yes
User defined
Yes
Yes
Yes
Yes
No
Yes
No
RPQ
RPQ
RPQ
Request price quotation
Request price quotation
No
No
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
X.75
X.75
X.75
Lemcom Systems
CMC-4, CMC-8, & CMC-32
Distributed Network
Processor Series
MIA-Com
9708 MPX
9724 RPX
9000 NDX
.7"/
'Other bit-oriented protocols include AOCCP, HOLC, BOLC, and VOLe.
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
C13-010-109
Processors
All About Communications Processors
TABLE 2 TERMINAL PROTOCOLS SUPPORTED (Continued)
Other
BitOriented
Protocols'
X.25
Packet
Level
TTY
IBM BSC
IBM
SOLC
Yes
No
No
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
Yes
Yes
Yes
No
No
No
No
No
Yes
Yes
No
No
Yes
No
No
No
Yes
Telex
Yes
Yes
Yes
Yes
3690
Yes
Yes
Yes
Yes
3695
Yes
Yes
Yes
Yes
5660
Yes
Yes
Yes
Yes
No
No
Yes
No
Future
-
No
No
No
NDLC (extended HDLC)
NDLC (extended HDLC)
NDLC (extended HDLC)
No
-
Manufacturer/
Product Name
Micom
Micro800
MB2-XAP-STD
MB3-CSW
MB3-XAP-STD/MB3-XAPHS
MB3-BSC-STD
MB3-PSW-STD/MB3PSW-HS
MB5·XAP-STD
NCR Comten
5620
Netlink Inc.
Network SNA-Hub
-
-
No
No
No
No
No
No
No
No
No
Paradyne
Pix/Pixnet
Pixnet-XL
Yes
No
No
No
No
No
Para dyne SDLC
HDLC, LAPD
Yes
Yes
Yes
Yes
Telenet, Infonet
Yes
Telenet, Infonet
Yes
Telenet, Infonet
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Special
Special
Special
Special
Yes
Yes
Special order
Yes
Yes
Special order
Telefile
Tele-Switch
Yes
Yes
Yes
Yes
Telematics
Net 25
Series 500, 1000, 2000
Yes
Yes
No
No
No
No
Yes
Yes
Tri-Data'
Netway 200
Yes
Yes
Yes
No
Tymnet
Micro-Engine
Yes
Yes
Yes
Yes
Mini-Engine
Yes
Yes
Yes
Yes
VoiceStar 46XX
VoiceStar 47XX
order
order
order
order
-
Yes, HPADs &
TPADS-VANs
include Accunet,
Datapac, Datex-P,
DDX, DN1, Itapac, Infonet, Luxpac, PSS Telenet,
Transpac,Tymnet
Telenet, Transpac, Tyment
Yes, HPADs
& TPADs include
Accunet, Datapac, etc.
Yes, HPADs & include
TPADs
Accunet. DataTelenet, Transpac, Tyment
pac, etc.
HPADS Telenet, Transpac, Tymnet
Yes,
&TPADs-VANs
include Accunet,
Datapac, Datex-P,
DDX, DN1, Itapac, Infonet, Luxpac, PSS
Special order
No
No
Yes, host or terminal PADYes, host or terminal PADYes, host or terminal PAD-
Yes-Telenet,
PSS, Euronet
Yes
Yes
No
PARS
-
PARS
PARS
PARS
-
-
Yes-X.25, ter- PARS, SNA, Uniscope, ICC
minal PAD, X.3,
X.28, x.29, Telenet cert.
Telex, 2741, Univac
Yes
DDCMP, Honeywell, others
Telex, 2741, Univac,
Yes
DDCMP, Honevwell, others
·Other bit-oriented protocols include ADCCP, HDLC, BDLC. and UDLC.
APRIL 1987
Other Protocols Supported
Yes, Telenet,
No
Tymnet, Datapac,
Transpac,
Datex-P, Telepac
Yes
No
Yes
Telex
Yes
NTX
3800 Model 2.1
3800 Model 2.2
3800 Model 2.3
Peri phonics
VoicePac
Voice Box
VoiceStar 40XX
VoiceStar 42XX
(
ASCII
async./
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13-010-110
Processors
All About Communications Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED (Continued)
Manufacturer/
Product Name
ASCII
async./
Other
BitOriented
Protocols'
X.25
TTY
IBM BSC
IBM
SOLC
Engine
Yes
Yes
Yes
Yes
Yes
DDCMP.
Tymnet ATC
Yes
No
No
No
No
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Videotex. SIT A gateway
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
-
Unisys
CP3680/CP3680-01
CP9585
B974
CP2000
Unisys
DCP/1OA. DCP/15. DCP/
20. & DCP/40
Vitalink. Communications
TransLAN
TransSDLC
TransLiNK
Packet
Level
Other Protocols Supported
Telex. 2741. Univac.
Honeywell. others
None
Most Burroughs protocols;
some IBM protocols
Yes
No
DTE. Tymnet. Te- lenet. various PTT
-
'Other bit-oriented protocols include AOCCP. HOLC. BOLC. and VOLe.
t> should meddle. Most require that their programs be written
in an arcane, assembler-level language, sometimes with the
benefit of pregenerated macros in the host access method,
often without.
Even with recent advances in simplicity and modularity,
configuring a communications processor to suit a specific
network or application can be difficult. With today's microprocessor technology, the better communications processors are the simpler; as an example, IBM's 3725 Communication Controller sports a parts list only half as long as that
of the older 3705. The trend is toward fewer components
each of which can do more, but most communications
processors are still lagging a bit behind that trend.
ment with some of its own, including enhancements to the
3725, new software releases (i.e.; VTAM 3.1.1), a remote
front-end processor (3720), and enhancements of its network management offerings (NetView).
However, NCR Comten does not give up easily, and in
June 1986, introduced the Comten 3690 Model L8 and the
Comten 3695 communications processors. The 3690 L8 is
designed for medium-sized networks, while the Comten
3695 can be used in medium- to large-sized networks. NCR
Com ten also met the software issue with an introduction,
in February 1987, ofa CNG release that supports extended
network addressing (ENA), supports full SNA trunking
capabilities, and provides access to IBM ACF/VT AM Version 3 Release l.1 environments.
THE CURRENT MARKETPLACE
The growth rate of the communications processor market
remained steady over the past year, but competition in that
market is speeding up. In a recent report, IDC states that
prices for communications processors are expected to decline by an average of two percent over the next five years,
resulting from slower growth rates, competition, and improved manufacturing methods. In the IDC report, communications processors were divided into two areas: devices that were used with IBM hosts and those that were
designed for use with non-IBM systems. Front-end processor unit sales for IBM hosts grew 14 percent from 5,935 to
6,760. Revenue also grew by 14 percent from 5,935 to
6,760. IDC predicts that revenue for this market will grow
to $1,104 million by 1990. Using these figures, IBM has an
82 percent share of the market, which is down slightly from
its previous 90 percent share of the market.
Despite the slowing growth rate, the competition has gotten
more intense and 1986 saw introductions on a number of
new products. One of the most significant introductions
was from NCR Com ten and its Com ten 5660. This processor offers three times the processing power of anything
currently on the market. IBM countered this announce-
The IDC report also claims that revenues in the non-IBM
market grew by only 6 percent and will reach $260 million
by 1990. Shipments of these processors grew by only three
percent in 1985. In this market area, IDC places Unisys
(formerly Burroughs) as the market leader with a 22 percent
share. The integration of its processors with those from
Sperry will keep the company busy over the next several
years. Unisys (formerly Sperry) also introduced a new
model in its DCP line, the DCP/15, aimed at the small- to
medium-sized network.
The market for full-scale communications processors can
be broken down into four segments: IBM and plug-compatible communications processors for the IBM mainframe
environment; communications processors dedicated to the
mainframe architectures of vendors other than IBM; packet-switching processors marketed as components of large,
vendor-independent private networks; and intelligent concentrators designed to serve in transparent network
architectures.
IBM remains the leader in the communications processor
market, as seen by its market share. NCR Com ten retains
the number two position, while other vendors fighting for a t>
© 1987 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1987
C13-010-111
Processors
All About Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS
The comparison charts that follow this report list the major
characteristics of 70 commercially available communications processors. The text below explains the chart entries, in order of their
appearance on the charts.
Computer systems interfaced. For processors that serve IBM and
plug-compatible mainframe computers, we assume that they serve
the entire, upward-compatible IBM line (IBM 370, 303X, 308X,
and 43XX) along with the major plug compatibles. For processors
operating in open network architectures, we list "Most major
vendors."
Direct attachment to host. This is one indication of whether the
device is a true front-end processor or not. Network processors do
not connect directly to the host.
Functional Configurations
Front-end Processors. A "yes" for this entry indicates that the
processor in question can serve as a channel-attached front end to
a mainframe computer. The next two entries list the maximum
number of hosts that can be channel attached, and the number of
those hosts that can be active simultaneously. A third entry lists
the degree of IBM emulation the processor can perform, and the
last entry indicates the PU (physical unit) type found within the
network.
Remote line concentrator. A "yes" for this entry indicates that the
processor in question can serve as a line concentrator remote from
any host processor in its network. The entry below lists the
number of hosts that concentrator can serve at one time.
Host-independent network processor. A "yes" for this entry indicates that the processor in question can control a network of open
architecture without the direction of a host computer.
Store-and-forward message switching processor. A "yes" for this
entry indicates that the processor in question can function as a
standalone, store-and-forward message switch.
Distributed processing node. Most true communications processors are not able to perform applications processing; however,
some, including a few intelligent concentrators, can support some
distributed applications in addition to their principal networking
function. This class of communications processor is becoming
rarer.
Terminal controller. A "yes" for this entry indicates that the
processor in question can function as a terminal controller within
its architecture.
Communications Features/Functions
Entries under this heading list a number of major functions a
communications processor can perform, but that not all communications processors do perform.
Multiplexing/demultiplexing. A "yes" for this entry indicates that
the processor in question can function as a multiplexer.
Terminal-initiated application switching. A "yes" for this entry
indicates that the processor in question supports the selection of
applications within a session between an attached terminal and an
attached host, at the terminal's request.
Communications processor initiated dynamic line reconfiguration.
Dynamic line configuration is another name for fallback switching. A "yes" for this entry indicates that the processor in question
can switch a session from a connection involving a failed line or
communications processor component to a healthy connection
when it senses the failure, without operator intervention.
Protocol conversion. The most common protocol conversion is
from asynchronous ASCII to the synchronous trunk protocol
specified by a given architecture (e.g., IBM's BSC or SOLe, or
X.25's LAP-B). This entry specifies the types of protocol conversion the processor in question can perform.
Code conversion. The most common code conversion is from
ASCII to IBM's EBCDIC. This entry indicates which code conversions the processor in question can perform.
Error control. This entry specifies which of the available schemes
for error detection (e.g., Parity, LRC, or CRC) the processor in
question uses.
Automatic transmission speed detection. If the processor in question can sense the data rate of a given transmission without
intervention from the operator or user, this entry lists the speeds it
can sense.
Automatic disconnect of inactive dial-up terminals. Many communications processors can sense activity on their attached terminals
and disconnect a terminal session if it has been inactive for a
specified period of time. A "yes" for this entry indicates that the
processor in question can do so.
Interface to Ethernet LAN. A "Yes" indicates that the processor
offers an interface to an Ethernet LAN.
System Characteristics
Network architecture compliance. Some communications processors function exclusively within their vendors' network architectures; others support open architectures such as X.25. If a processor supports no network architecture, it may be a "transparent"
device, or it may support the pre-architectural protocols of the
vendor(s) whose hosts it supports.
Communications line capacity. The first section of this entry deals
with the number oflines a communications processor can support.
The next entry lists the highest data rate the processor can support.
The last entry lists the effect (if any) that converting all lines to
full-duplex operation would have on capacity. Where such a
conversion has an effect, it usually cuts the maximum in half
Host Channel Extender. A "yes" for this entry indicates that the
processor can function as a host channel extender within its
architecture.
APRIL 1987
Processor type. This entry lists the vendor and model of the
communications processor's CPU. Many communications processors use standard OEM microprocessors such as the Z80 or the
MC68000.
Main memory word size, bits. In most cases, the main memory
word size is also the width of the processor's internal transmission
path along its bus.
Main memory storage capacity, bytes. This entry lists the capacity
of main memory in the communications processor in question.
Large main memory capacity is useful for transmission with
modern, high-speed protocols in which large blocks of data must
be stored for retransmission in case of error. Abundant main
memory is also useful for the performance of a number of highlevel functions on a time-shared or interrupt basis.
© 1987 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-112
Processors
All About Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS (Continued)
Level of data unit transferred across I/O channel. Communications processors configured as front ends transfer data to and from
the host through an I/O channel. The width, in bits, of the I/O
channel, coupled with the communications processor's main
memory word size, yields the level of data transferred (e.g., byte,
or block).
Type of data transfer supported between memory and a) communications lines, b} mass storage, and c} other peripherals. In some
communications processors, only the CPU has access to main
memory, and other components, such as line bases and I/O
processors must interrupt the CPU to read or write information in
main memory. In others, microprocessors in the subsidiary components have share control of main memory with the CPU, and
can read and write memory on their own. The latter process is
called Direct Memory Access (DMA).
I/O, backup, and diagnostic peripherals supported. Most communications processors interact only with their attached hosts and
terminals, and rely on host disk systems for storage and on host
software for detailed diagnostics. Some newer models, however,
support local disk storage for control software, traffic, and support
information, and feature diagnostic consoles for direct operator
intervention.
SuppOrt for remote console. Some processors that support local
operators consoles can also support an operator's console attached
over communications lines.
Support X.25 Level 3 capabilities. A "Yes" indicates that the
processor can support X.25 capabilities.
Communications Operating Software
Operating system implemented in. This entry indicates how the
processor in question stores its control program: wired directly
and inflexibly into the hardware, in software that must be loaded
into memory from the outside, in firmware (local read-only
memory) onboard the processor, or in some combination of these.
IPL method. This entry indicates how the processor in question
receives its initial program load: from its host processor, from a
locally attached diskette activated by an operator, or from onboard
read-only memory.
t> share of the market include Amdahl, Computer Communications, Inc. (CCI), and NTX. The other mainframe vendors, such as Unisys (including both Burroughs and Sperry), Control Data, and Honeywell, do not really compete
with one another in the communications processing marketplace. Each features a line of communications processors dedicated to its network architecture, and each line of
communications processors has its merits. Honeywell's
Datanet 8 Series features a broad array of compatibility
software. The Unisys DPC Series goes farther than most in
providing host-independent networking.
Among vendors of private networks, the two U.S. public
network leaders, Tymnet and GTE Telenet have solid
offerings. Amnet also offers a line of packet-switching
processors. A number of vendors offer intelligent concentrators, often at the high ends of lines of statistical multiplexers. Among these are Infotron, Micom, and DCA.
Additional software supported. This entry lists any network control or applications software that the processor in question can
support.
User programmability. This entry indicates the degree of control
users have over the control programs in the communications
processor. Some are programmable in the sense that users can
select among a number of preset configuration parameters, usually
from a menu. Others are fully programmable, usually through an
assembler-level language. Mainframe front-end processors usually
use a subset of their hosts' access methods implemented in
macros; other programmable communications processors use a
native assembler language.
Software separately priced. This entry shows to what extent the
communications processor's operating software is bundled with
the cost of the hardware.
Approximate proportion of currently installed systems supplied as
turnkey systems. A turnkey system is a system with which the user
need not participate in the configuration design; the user can
simply "turn the key" and have a working system. Conversely, a
turnkey system is one for which the user is denied the privilege of
a custom configuration.
Network Management/Control Capabilities
Diagnostic tests supported. Some processors now offer management functions, such as running diagnostic tests. Examples include
remote and local loopback, port/link status, and internal
diagnostics.
(
Data collected. In gathering performance data, the processor can
collect traffic statistics, line failures, error records, etc.
Pricing and Availability.
Entries under this header list purchase, lease (or rental) and
maintenance pricing, whether maintenance is bundled with the
lease or rental price, the product's date of first delivery, the
number of processors of that model the vendor has installed to
date, and the provider of service and maintenance for the product.
THE COMPARISON COLUMNS
At the end of this report are comparison columns listing the
device specifications of many communications processing
systems. While compiling this report in January 1987,
Datapro sent requests to over 25 firms known or believed
to manufacture communications processors. The absence
of any company from the charts means that the company
either failed to respond to our request by the deadline, was
unknown to us, or chose not to be listed.
The Key to Communications Processors Comparison
Charts provides a complete description of the comparison
chart entries.
(
~.
Communications Processor Vendors
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone t>
© 1987 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
C13·010·113
Processors
All About Communications Processors
t:> numbers of the vendors whose communications products
are shown in the comparison charts that follow.
Amdahl Corporation, 1250 East Arques Avenue, P.O. Box 470,
Sunnyvale, CA 94088-3470. Telephone (408) 746-6000.
Amnet, Inc., 1881 Worcester Road, Framingham, MA 01701.
Telephone (617) 879-6306.
Cableshare, 20 Enterprise Drive, P.O. Box 5880, London,
Ontario, Canada N6A 4L6. Telephone (519) 686·2900.
Century Analysis, 114 Center Avenue, Pacheco, CA 94553.
Telephone (415) 680-7800.
Chi Corporation, 26055 Emery Road, Cleveland, OH 44128.
Telephone (216) 831-2622.
Computer Communications Inc., 2610 Columbia Street, Torrance, CA 90277. Telephone (213) 320-9101.
Control Data Corporation, 8100 34th Avenue South, Minneapolis, MN 55420. Telephone (612) 853-8100.
Digital Communications Associates, Inc. (DCA), 1000 Alderman Drive, Alpharetta, GA 30201. Telephone (404) 442-4000.
Honeywell Information Systems, Inc., 200 Smith Street, Waltham, MA 02154. Telephone (617) 895-6000.
IcotCorporation, 3801 ZankerRoad, P.O. Box 5143, San Jose,
CA 95150-5143. Telephone (408) 433-3300.
MIA-COM Telecommunications Div., Comm. Network
Group, 11717 Exploration Lane, Germantown, MD 20874.
Telephone (301) 428·5500.
Micom Systems, Inc., 4100 Los Angeles Avenue, P.O. Box
8100, Simi Valley, CA 93062-8100. Telephone (805) 583-8600.
NCR Comten, 2700 Snelling Avenue North, St. Paul, MN
55113. Telephone (612) 638-7777.
Netlink Inc., 3214 Spring Forest Road, Raleigh, NC 27604.
Telephone (919) 878-8612.
NTX Communications Corporation, 508 Tasman Drive, Sunnyvale, CA 94089. Telephone (408) 747-1444.
Paradyne Corporation, 8550 Ulmerton Road, Largo, FL
33540. Telephone (813) 530-2000.
Periphonics Corporation, 4000 Veterans Memorial Highway,
Bohemia, NY 11716. Telephone (516) 467-0500.
Telefile Computer Products, Inc., 17131 Daimler Street, Irvine, CA 92714. Telephone (714) 250-1830.
Telematics International, Inc., Crown Center, 1415 NW 62nd
Street, Fort Lauderdale, FL 33309. Telephone (305) 772-3070.
Tri-Data, 505 East Middlefield Road, Mountain View, CA
94039-7505. Telephone (415) 969-3700.
Infotron Systems Corporation, 9 North Olney Avenue, Cherry
Hill, NJ 08003. Telephone (609) 424-9400.
Tymnet-McDonnell Douglas Network Systems Company,
2710 Orchard Parkway, San Jose, CA 95134. Telephone (408)
946-4900.
International Business Machines Corporation, Old Orchard
Road, Armonk, NY 10504. Contact your local IBM
representative.
Unisys Corporation, 6071 2nd Avenue, Detroit, MI 48232.
Telephone (313) 972-7000.
KMW Systems Corporation, 100 Shepherd Mountain Plaza,
Austin, TX 78730-5014. Telephone (512) 338-3100.
Unisys Corporation, P.O. Box 500, Blue Bell, PA 19424.
Telephone (215) 542-4011.
Lemcom Systems, Inc., 2104 West Peoria Avenue, Phoenix,
AZ 85029. Telephone (602) 944-1543.
Vitalink Communications Corporation, 1350 Charleston Road,
Mountain View, CA 94043. Telephone (415) 968-5465.0 •
(
APRIL 1987
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1·800-328·2776
C13-010-114
Processors
All About Communications PrQcessors
Amdahl
4705T
Amdahl
4705E
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
All IBM- and Amdahlcompatible mainframes
Yes
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
All IBM- and Amdahlcompatible mainframes
Yes
Amnet
N6050
Amnet
N6070
Most vendors
Most vendors
No
No
Yes
No
Yes
6
Not applicable
6
4
4
Not applicable
270X/370X,
EP,
NCP,
PEF
270X/370X, EP, NCP, AC
Not applicable
PU Type 4
PU Type 4
Not applicable
Yes
Yes
Yes
Unlimited
Unlimited
Unlimited
No
No
Yes
No
No
No
No
No
Yes
No
Yes
No
SNA
OSI X.25
SNA
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Unlimited
Yes
No
Yes
Yes
OSI X.25
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
352
FEP 352, high speed-384
112
1,024
64K bps
Capacity halved
64K bps
None
64K
None
Host Channel Extender:
Yes
2.048M bps
High speed section-none
FEP section-halved
Yes
No
No
No
Yes
No
SIS, BSC, SDLC to X.25
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Yes
No
Yes-via Commpro
No
No
ASCII to EBCDIC
LRC and CRC
50 to 9600 bps
Yes
Yes
Yes, PAD
Yes
Yes, PAD·
No
Yes
Yes
Yes, PAD
Yes
Yes, PAD
No
Yes
No
No
Proprietary
18
1024K
Byte or Block
Proprietary
18
To 1024K
Byte or block
Multipro.cessor
16
512K
Block
Multiprocessor
16
1MB
Block
DMA/lnterrupt
None
None
Diskette (diagnostic)
--
DMA/lnterrupt
DMA
Not applicable
Not applicable
Yes
DMA
Not applicable
Not applicable
Yes
Yes
Yes
Yes
Yes
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamiC line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory arid:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
No
Diskette (diagnostic),
console-via Commpro
Yes, via Commpro
Yes
Yes
--
Software
Software
'C' -
Download from host
Commpro, UTS/F (Unix)
Downline load from host
Commpro
Local & remote IPL
Net Mgmt. Sys.
MP/OS
-
'C' -MP/OS
Local & remote IPL
Net. Mgmt. System
User programmability
Yes
. Yes
Yes, 'C' language
Yes, 'C' language
Software separately priced
Yes
Yes
Some
Some
All
.100%
Not applicable
Not applicable
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
52,600
375
2,385 (2-yr. lease)
67,000+
475+
3,000+ (2-yr. lease)
35,000
Contact vendor
Contact vendor
50,000
Contact vendor
Contact· vendor
No
April 1983
800
Amdahl
No
1986
No
May·1985
20
Amnet
No
March 1983
15
Amnet
Remote load via cOmm.
line; operates with IBM
3705 and 3705/Commpro
software.
Remte load via comm Ine
basic. same as 4705E;
c.an support up to 4
high-speed links.
Auto. table generation.
Auto. table generation.
6
Amdahl
© 1987 DATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED~OR REPRINTS. CALL 1-80Q,.328-2776
(
APRIL 1987
~.
C13-010-115
Processors
All About Communications Processors
Amnet
N7400
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
All computers using
ASCII serial communi-
DEC PDP-ll and VAX
Cableshare
LSI-X.25 Host
Port Concentrator"
All hosts supporting
async communications
No
-
-
-
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Unlimited
Yes
No
Yes
Yes
OSI X.25
Yes
16
16
No
Yes
1
1
No
Yes
32 async channels
32
No
-
Yes
16
Yes
No
No
Ves
X.25
-
-
No
1
Yes
No
No
No
X.25, OSI
Yes
32
Yes
No
No
Yes
X.25, OSI
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
64
16
127
32
256K bps
None
56K
None
19.2K
Halved
19.2K
Halved
Host Channel Extender:
No
-
-
-
Yes
Yes, PAD
Yes
Ves, PAD
No
Yes
-
Ves
Ves
No
Async to X.25
None
X.25 procedures
Yes
Yes
Ves
No
No
Async/X.25
1
Infor. not available
No
No
Ves
No
No
Async/X.25
Baudot/ ASCII
Infor. not available
Ves, 110-9600 bps
Ves
-
-
-
-
PC/AT (80286)
16
640K
Block
Intel 8088
16
192K
Block
LSI-ll/2 or PDP-l1/23
16
64K
Block
LSI-ll/2 or PDP-ll/23
16
64K
Infor. not available
DMA
Not applicable
Not applicable
Ves
DMA
None
None
Console
DMA
None
None
FEP console
Infor. not available
Infor. not available
Infor. not available
Console
Ves
Ves
Yes
Yes
Yes
-
-
-
Firmware/software
combination
Internal self load
None
Software
Software
IPL method
Additional software supported
'C' -MP lOS under
MS/DOS
Local and remote IPL
Net. Mgmt. Sys.
Download from host
None
Internal self load
None
User programmability
Ves-PC/AT
No
No
Software separately priced
Some
Ves, via user-selected
parameters
None
Infor. not available
Infor. not available
Not applicable
All
All
All
Ves
-
-
-
Ves
7,000
One percent
Contact vendor
3,000
None
Not available
13.450
100
None
Contact vendor
70
None
No
April 1987
-November 1978
-
-
Amnet
No
June 1983
No
Cableshare
Auto, table generation.
"1986 information.
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/ demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
, CAPABILlTIt:S
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental. $
(
Cableshare
LSI-X.25
Front-End Processor'
Cableshare CSI
Data Concentrator'
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
-
-
75
Digital Equipment Corp.
March 1980
25
Digital Equipment Corp.
DTE or DCE support;
supports up to 5 X.25
netwrk links w/ DTE or
DCE config."1986 infor,
DTE or DCE support;
supports up to 5 X.25
network links with DTE/
DCE contig."1986 infor.
© 1987 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13-010-116
Processors
All About Communications Processors
Century Analysis
OSI
(Office Systems
Interface)
Cableshare
LSI-X.25 Intelligent
Concentrator"
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Chi Communications
Processor
CCP/3205
Chi Communications
Processor
CCP/3205P
All async terminals
NCR Criterion. 9800
Unisys 1100 Series
Unisys 1100 Series
-
No
Yes
Yes
Yes
32 async channels
32
No
Yes
Not applicable
Yes
32
Yes
No
No
Yes
X.25.0SI
Yes
2
2
No
PU Type 2
Yes
Unlimited
Yes
No
No
Yes
X.25
-
Not applicable
Yes
One
No
No
Yes
Yes
Proprietary
Yes
8
8
No
PU Type 2
Yes
Unlimited
Yes
No
No
Yes
X.25
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity. if all lines are full-duplex
32
24
Over 1.000
24
19.2K
Halved
19.2K bps
None
64K
None
64K
None
Host Channel Extender:
-
No
No
No
Yes
No
No
Async/X.25
Baudot/ASCII
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes
Yes
Yes
Yes
Async/unis., 3270/async
ASCII/EBCDIC/XS3
LRC, BCC, CRC
Yes, 110-19.2K bps
Site option
Yes
Yes
Yes
Async to uniscope
ASCII/EBCDIC/XS3
LRC, BCC, CRC
Yes, 110-19.2K bps
Site option
-
No
Yes
Yes
LSI-ll/2 or PDP-ll /23
16
64K
Infor. not available
68010
16 bit
756K bytes
Byte, block
Perkin Elmer 3205
32
1M (stnd.), up to 4M
Byte
Perkin Elmer 3205
32
1M (stand.), up to 4M
Byte
Infor. not available
Infor. not available
Infor. not available
Console
Interrupt
Not applicable
Not applicable
Not applicable
Yes
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP console, diskette,
patch panel
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP console, diskette,
patch panel
Yes
-
No
Yes
Yes
Software
Proprietary
Software and firmware
Internal self load
None
Download from host
Spreadsheet, print
format
Host/diskette/self-Ioad
Development, communi-
Firmware/software
combination
Host/diskette/self-Ioad
Dev., communications
No
No
Yes, via user-selected
parameters
X.25, X780, uniscope
terminal emulation
All
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
110-9600 bps
cations
Infor. not available
Not applicable
-
All
Yes, via user-selected
parameters
X.25, X780, uniscope
terminal
All
-
Yes, point status
Yes
Yes
Traffic statistics
Yes
Yes
6,995
600/yr.
-
50,000
600
Contact vendor
35,000
300
Contact vendor
No
1981
1,200
CAl
No
1977
85
Chi Corporation
No
1985
125
Digital Equipment Corp.
DTE or DCE support;
supports up to 5 X.25
network links with DTE/
DCE config. '1986 infor.
Load leveling, raw line
selection, terminal key
ahead, mainframe intel.
rout., port contention.
Dynamic rout .. 2 async
screen ed., auto. term.
protocol detect, redund
mult. loc/rem. hosts.
All
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
-Yes,
Contact vendor
70
None
-March 1980
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-fOR REPRINTS, CALL 1-800-328-2776
3
Chi Corporation
Preconfig., dynamic
routing, 2 async screen
ed., auto term. protocol detect. redundancy.
APRIL 1987
(
C13-010-117
Processors
All About Communications Processors
Chi Communications
Processor
CCP/3210
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Unisys 1100 Series
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Computer
Communications
CC-SO/S5
Computer
Communications
CC-S
Yes
IBM S/370, 30XX, 43XX, IBM S/370, 30XX, 43XX, IBM S/370, 30XX, 43XX,
and compatibles
and compatibles
and compatibles
Yes
Yes
Yes
Yes
8
8
No
PU Type 2
Yes
Unlimited
Yes
No
No
Yes
X.25
Yes
2
2
370X/37X5 EP
PU Type 4
No
Not applicable
No
No
No
Yes
No
Yes
4
4
370Xj37X5 EP
PU Type 4
No
Not applicable
No
No
No
Yes
No
Yes
7
7
370Xj37X5 EP
PU Type 4
No
Not applicable
Yes
Yes
No
Yes
No
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
Over 1,000
32
-
-
64K
None
56K
None
230.4K bps
None
230.4K
None
Host Channel Extender:
No
No
No
No
Yes
Yes
Yes
Asyncjunisc.; 3270jasyn
ASClljEBCDICjXS3
LRC, BCC, CRC
Yes, 11O-19.2K bps
Yes
Yes
Yes
No
Yes
Parity, LRC, and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
No
No
No
Perkin Elmer 3210
32
0.5M stand. (up to 4M)
Byte
CCI 601
16
64K
Byte
CCI 801
16
64K
Byte
CC18001/8501
16
256K
Byte
DMAjlnterrupt
OMAjlnterrupt
OMAjlnterrupt
FEP console, diskette,
patch panel
Yes
DMAjlnterrupt
DMAjlnterrupt
OMA/lnterrupt
FEP CRT console, diskette, printer
Yes
DMAjlnterrupt
DMAjlnterrupt
OMA/lnterrupt
FEP CRT console,
diskette, printer
Yes
DMA/lnterrupt
DMAjlnterrupt
OMA/lnterrupt
Disk (40-200MB), mag
tape, FEP CRT, printer
Yes
Yes
Yes
Yes
Yes
COMMUNICATIONS FEATURESjFUNCTIONS
Multiplexing j demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
-
Hardware/software
combination
Host/diskette / self-load
Dev., communications
IPL method
Additional software supported
(
Computer
Communications
CC-6F
Software
Software
Software
From host/diskette
Value added options,
assembler, utilities,
diagnostics
From host/diskette
Value added options
assembler loader,
utilities, diagnostics
From host/disk
Value added options,
Yes, via user-selected
parameters
X.25, X780, uniscope
terminal emulation
All
Yes, via user-selected
parameters & programs
Value added options
Yes, via user-selected
parameters & programs
Value added options
assembler, loader,
utilities
Yes, via user-selected
parameters & programs
Options and custom sys.
All
90%
95%
Yes
-
-
Yes
-
-
-
No
1983
4
Chi Corporatation
39,S40
296
1,224 (3-yr.); 1,600
(rental)
Yes
Yes
1976
November 1981
270
30
Computer Communications Computer Communications
High-speed vers., fully
expand.; dynamic rout.,
2 async screen ed., redundancy, UTS simulat.
Auto-pOll, autobaud
rate detect, autodial.
single lOP support, off
line util., flow contrl
85,000
750
Contact vendor
17,900
150
630
Auto poll, autobaud
rate detect, speed &
code conver., autodump,
autoload, multihost spt
© 1987 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-S00-32S-2776
custom software,
68,000/115,640
246/426
1,932 (3-yr. lease)
Yes
1975
432
Computer Communications
Used mainly for custom
store-and-forward
message switches,
electronic mail, etc.
C13-010-118
Processors
All About Communications Processors
Computer
Communications
CCI-8400
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Control Data
2551-3
IBM S/370, 30XX, 43XX, CDC Cyber 170, 180,
and compatibles
Cyber 70, 6000 Series
Yes
Yes
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Control Data
2551-4
Control Data
CDCNET
CDC Cyber 170, 180,
Cyber 70, 6000 Series
Yes
CDC Cyber 170 CDCNET
Yes
Yes
4
4
CTCA
CTCA
No
Not applicable
No
No
No
No
-
Yes
2
1
No
PU Type 5
Yes
8
No
No
No
No
Yes
Yes
2
1
No
PU Type 5
Yes
8
No
No
No
No
Yes
Yes
2
2
No
PU Type 5
Yes, TRI
Unlimited
No
No
Yes
Yes
CDCNET (OSI model)
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
-
32
254
MTI-64, Network-5OO(
-
56K bps
None
56K
None
128K bps
None
Host Channel Extender:
Yes
No
No
No
No
No
Yes
No
No
Native HDLC
No
No
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
No
ASCII to EBCDIC
Yes, extensive
Yes, 100 bps-38.4K bps
Yes
No
No
No
No
Mult. 8809, 8089, 68000
8
512K-1MB
Byte, block, selector
CDC 1551-3
16
256K
Byte and control
CDC 2551-4
16
256K
Byte and control
Multiple MC 68000
16 bits
1-4MB
Block
DMA
DMA
DMA/lnterrupt
None
DMA/lnterrupt
Console, cassette
DMA/lnterrupt
None
DMA/lnterrupt
Console, cassette
DMA/lnterrupt
None
DMA/lnterrupt
Console
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
-
Diskette, supervisory
console, display unit
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Software
Firmware / software
combination
Download from host
None
Firmware/software
combination
Download from host
None
Firmware/software
combination
Download from host
None
IPL method
Additional software supported
-
User programmability
Yes
None
Yes, via user-selected
programs
All
Yes
Software separately priced
All
Yes, via user-selected
programs
Some
All
98%
98%
100%
-
Local and remote loopback
Extensive statistics
Local and remote loopback
Extensive diagnostics
Local and remote loopback
Extensive diagnostics
55,965
369
1,552 (3-yr. lease)
36,955
433
1,067 (3-yr. lease)
48,648
483
10403 (3-yr. lease)
15,595
65
624 (3-yr. lease)
Yes
January 1986
24
Computer Communications
No
January 1983
Infor. not available
Control Data Corp.
No
January 1983
Infor. not available
Control Data Corp.
No
December 1985
1,000+
Control Data Corp.
T1 processor for bulk
file data transfer;
simult. attached to
pre-SNA/SNA hosts.
Predecessor was 2550
products, first shipped
in 1976.
Predecessor was 2550
product, first shipped
in 1976.
CDC NET-dist. netwrk. of
mainframe, term., & net
work device interfaces
conn. by Ethernet/X.25.
Host, manual diskette
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
C13-010-119
Processors
All About Communications Processors
,f
Digital
Communications
Associates
System 355
~
\~
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Digital
Communications
Associates
System 375
Digital
Communications
Associates
System 330
Most vendors
Most vendors
Most vendors
Most vendors
Yes
Yes
Yes
Yes
Yes
44
124
Yes
Yes
4
42
Yes
Yes
114
124
Yes
Yes
Not applicable
26
No
-
-
-
-
Yes
124
Yes
No
Yes
Yes
INA/X.25/SNA
Yes
42
Yes
No
Yes
Yes
INA/X.25.jSNA
Yes
124
Yes
No
Yes
Yes
INA/X.25/SNA
Yes
26
Yes
No
Yes
Yes
INA, X.25
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
44
4
114 trunks, 120 lines
28
72K bps
None
12K bps
None
12K bps
None
19.2K bps
None
Host Channel Extender:
-
-
-
-
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Yes
Yes
Yes
Async to 3270, X.25/SNJI
ASCII to EBCDIC
Yes-CRC
110 to 9600 bps
Yes
Yes
Yes
Yes
Async to 3270, BSC/X.25
Yes, ASCII to EBCDIC
Yes-CRC
110 to 9600 bps
Yes
Yes
Yes
Yes
Async/X.25/3270 BSC
ASCII to EBCDIC
Yes-CRC
110 - 9600 bps
Yes
Yes
Yes
Yes
Async to X.25
No
CRC
110-9600 bps
Yes
Interface to Ethernet LAN
Yes
Yes
-
-
Z80B, 68000
8 bits
64K - 512K
Byte/block
Z80B, 68000
8 bits
64K - 512K
Byte/block
Z80A/B, 68000
8
11MB
Byte
Z80B
8
19.2K bps
Byte
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Dual call console,
diagnostics built-in
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Dual call console,
diagnostics built-in
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Dual call console,
diagnostics built-in
Yes
DMA/lnterrupt
Interrupt
Interrupt
Diagnostics built-in,
console, diskette
Yes
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Yes
Yes
Yes
-
Software
Software
Software
Software
IPL method
Additional software supported
Internal self-load
Not applicable
Downline/int. self-load
Not applicable
Internal self-load
Not applicable
Internal self-load
Not applicable
User programmability
Yes; via user-selected
parameters/programs
All
Yes, via user-selected
parameters; programs
All
Yes, via user-selected
parameters, programs
All
Yes, via user-selected
parameters
All
25%
25%
25%
Not applicable
Loc/rem loop., port/
line stat. mod/lead.
T raff. load., line hits
stream., net soft. fail
Loc/rem loop., port/
line status, mod. lead
Trunk down, hardware
failures
Loc/rem. loop., port/
line stat. modem lead
Traff. load., line hits
net soft. failures
Yes
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
See comments
Contact vendor
Contact vendor
No
1980
Infor. not available
DCA, third party
No
1980
Infor. not available
DCA, third party
No
December 1984
Infor. not available
DCA, third party
No
-
Supports host selection
port contention, full
line and modem control
facilities; X.25 gate.
Supports host selection, port contention,
full line and modem
control facilities.
Diagnostics plus error
checking; X.25 gateway
interface; advanced
features software.
$6,495-10 ports; $8,49!
-26 ports; 0/1; host
select.; port conten.;
alternate routing.
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
(
Digital
Communications
Associates
System 335
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
Yes
-
DCA
~
C13-010-120
Processors
All About Communications Processors
Digital
Communications
Associates
System 332
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Digital
Communications
Associates
System 334 Bisync
Honeywell
Information Systems
Datanet B/10
Honeywell
DATANET 8/20
Most vendors
IBM and compatibles
Yes
Yes
Honeywell DPS 7, DPS 88 Honeywell DPS 7, DPS 8,
DPS 8, DPS 90, DPS 7E
DPS 88, DPS 90, DPS 7E
Yes
Yes
Yes
Not applicable
24
No
Yes
Not applicable
500
3274, 37X5 FEP
Yes
1 or 2
1 or 2
Yes
-
Yes
24
Yes
No
Yes
Yes
INA, X.25
-
Yes
12
Yes
No
Yes
Not applicable
INA, 3270 BSC, X.25
Yes
4
4
Yes
Yes
-
-Yes
Yes
No
Yes
Yes
Honeywell DSA (ISO)
-
Yes
No
Yes
Yes
Honeywell DSA (ISO)
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
26
14
31
127
12K bps
None
12K bps
None
19.2K bps
Load-dependent
19.2K bps
Load-dependent
Host Channel Extender:
-
-
-
-
Yes
Yes
Yes
Async to X.25
No
CRC
110-9600 bps
Yes
Yes
Yes
Yes
3270 to X.25
No
CRC
Not applicable
No
Yes
Yes (by host program)
Yes
No
No
Yes
Yes; 110,300, 1200 bps
Yes; optional, variable
Yes
Yes (by host program)
Yes
No
No
Yes
Yes
Yes
-
-
-
-
Z80B/M68K
8
640K
Byte
Z80B/M68K
8
1024K
Block
DATANET 8/10
16
1MB
Byte
-1MB
DMA/lnterrupt
Interrupt
Interrupt
Diagnostics built-in,
console, diskette
Yes
DMA/lnterrupt
Interrupt
Interrupt
Diagnostics built-in,
console, diskette
Yes
Async bus
Async bus
Async bus
Console, diskette
Async bus
Async bus
Async bus
Console, diskette
Yes
Yes
-
-
-
-
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
DATANET 8/20
Byte
Software
Software
IPL method
Additional software supported
Internal self-load
Not applicable
Internal self-load
Not applicable
Firmware/software
combination
Host, local, or VIP
Additional on host for
administrative and
control
Firmware/software
combination
Host, local, or VIP
On host for administrative and control
User programmability
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
All
Not applicable
Not applicable
Software is customer
installable
Software is customer
installable
Yes
Yes
-
Yes
Yes
-
-
See comments
Contact vendor
Contact vendor
See comments
Contact vendor
Contact vendor
23,900
130
795 (5-yr. lease)
38,000
215
1,275 (5-yr. lease)
No
Yes
1985
Infor. not available
Honeywell
Yes
1985
Infor. not available
Honeywell
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
No
-
-
-
DCA
-DCA
$9,995-12 ports; 24$10,995; 0/1; host selection; port contention
alt. routing.
$14,995-4 ports; 8 port Low-end model in the
-$17.495; $19,995-1, OAT ANET 8 Series.
ports; user-initiated
terminal sess. switch.
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
-
APRIL 1987
C13-010-121
Processors
All About Communications Processors
Honeywell
DATANET 8/30
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
ICOT Corporation
254
Infotron
990NP
Network Processor
ICOT Corporation
257
Honeywell DPS 7, DPS 8, ICOT 254
DPS 88, DPS 90, DPS 7E
Yes
ICOT 257
-
-
-
No
Yes
4
4
Yes
Yes
No
8
3270 BSC, SNA/SDLC
Yes
No
28
3270 BSC, SNA/SDLC
Yes
28
Yes
No
Yes
Yes
SNA, BSC, NCR
No
None
Over 10 hosts
3270 BSC
No
Yes
Over 10 hosts
Yes
No
Yes
No
Proprietary
-
Yes
Yes
No
Yes
Yes
Honeywell DSA (051)
Yes
8
Yes
No
Yes
Yes
SNA, BSC, NCR
-
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
255 (max.)
8
28 (all sync)
640
19.2K bps
Load dependent
-
19.2K bps
28
-
64K bps
None
Host Channel Extender:
-
-
-
No
Yes
Yes (by host program)
Yes
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
Yes
No
Yes
Yes
Yes
Yes
No
No
Yes
Yes (async)
Yes
No
No
Yes
Yes (Up to 9600 bps)
Yes
-
-
-
No
DATANET 8/30
Multi-Intel 8088
128K bytes
128K bytes
Byte
Intel 8088
128K bytes
128K bytes
Byte
Interrupt
Mail box
Interrupt
Mail box
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/ demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
-
2MB
Byte
Async bus
Async bus
Async bus
Console, diskette
-
Host console
6502/8086/80186
-
Host console
Does not apply
D
DMA and Interrupt
Does not apply
Does not apply
Console/diskette
-
Yes
Yes
Yes
Yes
-
-
-
Yes
Firmware/software
combination
Host, local, or VIP
On host for control
and administrative
Firmware
Firmware
Download from host
No
Download from host
No
Combination firmware &
software
EEPROM
Does not apply
Yes, via user-selectedq
parameters
All
Yes, via user selected
parameters
No
Yes, via user selected
parameters
No
Some
Software is customer
installable
100%
100%
25%
-
-
-
Yes
-
-
-
Yes
80,000
350
2,675
-
7,200 and up
20,000
Contact vendor
Contact vendor
Yes
1985
Infor. not available
Honeywell
-
No
1981
No
1984
4,000
Infotron
-
5,200 and up
No
1981
ICOT, third party w/NCR
IBM 2780/3780 BSC
emulation.
-
-
Yes, via console
ICOT, third party w /
NCR
2780/3780 BSC emulatior Provides adapt. routing
compo netwrk. mgmt.
features; bisync emula.
& async/BSC/SDLC suprt.
© 1987 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328c2776
C13-010-122
Processors
All About Communications Processors
IBM
3705-80
Models M81
through M83·
SUPPLIER AND MObEl
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max.' no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
KMW $ystems,
Auscom 8911A
Channel Interface
IBM
3725
IBM
3720
IBM 8/370, 30XX, and
43XX; 8/370 in 270X
Yes
IBM 43XX, 303X, 308X,
309X
Yes (Models 1 & 11;
Models 2, 12 via phone)
IBM 8/370 (except models 115 and 125), 303X,
Yes
IBM mainframes, plugcompatible hosts
Yes (thru channel)
Yes
2
2
270X/370X
Yes
4
4
Yes
Yes
8
8
270X and 3705 with EP
No
-
-
-
i'
1
3274(IA/1D), 3803, 327,
No
-
No
Not applicable
No
No
No
No
SNA
Yes
4
No
No
No
No
SNA
Yes
8
No
No
No
No
SNA
16
256 w/ 3726 expansion
112
230.4K bps
None
1.544M bps
-
Yes
Yes
No
No
Various
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
57.6K
Capacity halved
28 Std.-l ,2; 60 w/ expan. unit; 16 std-ll,12
64k bps
None
Host Channel Extender:
-
No
-
No
No
No
No
Yes
Yes
LRC and CRC
Yes; via optional soft,
No
Yes
No
Yes
Yes
Yes
LRC, CRC
Yes, via opt. software
No
Yes
No
Yes
Yes
Yes
LRC and CRC
Yes, via opt. software
No
No
No
No
No
Yes, ASCII to EBCDIC
Yes
No
No
No
No
No
Yes
Proprietary
18
256K
Block
Proprietary
Proprietary
18
1MB (expand. up to 2MB) 256K-3MB
Block
Block
DEC LSI 11/73
16
1MB
Block
DMA
DMA
DMA
None
DMA
DMA
DMA
FEP console
DMA
DMA
DMA
FEP console
No
Yes
-
Yes
Yes, up to 150 meters
(492 feet)
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Tape cartridge, disk,
diskette
No
Software
Software
Software
Download from host
NCCF, NPDA
Internal self load
Internal self load
ACF/NCP, NTO, NPSI, NRF NCCF, NPDA, ACF/NCPNPDA, ACF/TCAM, EP R3 PEP, EP/3725
EP R4, NetView
Manual load from tape
User programmability
Yes
Yes
Yes
Yes
Software separately priced
Yes
Yes
Yes
Yes
-None
None
None
50%
-
Yes
-
Yes
Yes
-
No
36,600 (M81)
219
1,465 (2-yr. lease);
1,72 1 (rental)
Yes
August 1981
Infor. not available
IBM
36,500/26,00 (Mod. 1/2) 32,000
175 (1); 142 (2)
2,605 (1); 1,855 (2)
1,485 (rental)
20,000
3OO/mo.
No
No
No
1986--1/2;1987-11/1 1983
Infor. not available
IBM
IBM
No
1980
2,000
KMW
3721 expansion unit expands capabilities of
3720; Models I, 2, II,
and 12.
Full programmable IBM
channel interface.
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
·IBM no longer markets
these models.
-
-
HONE Configurator CF3725 should be consuited for actual no.
of operable lines.
© 1987 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
Yes
Software
-
APRIL 1987
(
C13-010-123
Processors
All About Communications Processors
Lamcom Systems
CMC-4
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity. if all lines are full-duplex
Host Channel Extender:
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size. bits
Main memory storage capacity. bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O. backup. and diagnostic peripherals
supported
Support for remote console
5upport X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
Lemcom Systems
CMC-8
Lemcom Systems
Distributed Network
Processor Series
Lemcom Systems
CMC-32
IBM 5/360. 5/370.
30XX. 43XX. & compat.
Yes
IBM 5/360. 5/370.
30XX. 43XX. & compat.
Yes
IBM 5/360. S/370.
30XX. 43XX. & com pat.
Yes
IBM S/360. S/370.
30XX. 43XX. & compat.
Yes
Yes
1
1
270X. 370X. EP
Not applicable
No
Not applicable
No
No
No
No
Not applicable
Yes
1
1
270X. 370X. EP
Not applicable
No
Not applicable
No
No
No
No
Not applicable
Yes
1
1
270X. 370X. EP
Not applicable
No
Not applicable
No
No
No
No
Not applicable
Yes
64
64
270X. 370X. EP
4
8
-
-
56K
None
57.6K
Capacity halved
56K
None
56K
. None
-
Yes
64
Yes
Optional
Yes
Optional
DMMA
No
,No
No
Yes
No
No
No
No
Yes
Yes
Optional-300. 1200
Yes
No
No
No
No
Yes
Yes
Optional-300.1200
Yes
No
No
No
No
Yes
Yes
Optional-300.12oo
Yes
Yes
Yes
RPQ
Yes
Yes
Yes
110 to 19.2K bps
Yes
No
No
No
Planned
Motorola 6800
8
40K
Byte
Motorola 6800
8
80K
Byte
Motorola 6800
8
320K
Byte
Motorola 6809
8
15M
Byte and block
Interrupt
None
None
FEP console
Interrupt
None
None
FEP console
Interrupt
None
None
FEP console
Yes
Yes
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
FEP console and bubble
memory
Yes
Planned
No
No
No
Firmware
Firmware
Firmware
Software
IPL method
Additional software supported
Intarnal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
5elf-/ manual-/ down-load
Channel prog. simulator
& prob. determin. aids
User programmability
User-selected
parameters
Utilities only
Yes. via user-selected
parameters
Utilities only
Yes. via user-selected
parameters
Utilities only
Yes. via user-selected
parameters
All
None
None
None
25%
Yes; loopback. internal
diagnostics
Trace
Yes; loopback. internal
diagnostics
Trace
Yes. loop back. internal
diagnostics
Trace
Yes; rem. prob. deter..
loopback. intern. diag.
Yes
14.000
Contact vendor
Contact vendor
16.000
Contact vendor
Contact vendor
20.000
Contact vendor
Contact vendor
25.00
Contact vendor
Contact vendor
Contact vendor
March 1977
400
Various
Contact vendor
November 1980
65
Various
Contact vendor
March 1979
135
Various
Contact vendor
1981
560
Various
Microprocessor-directed
FEP; front-end polling
lind console support
avail.; OEM discounts.
Microprocessor-directed
FEP; front-end polling
and console support
avail.; OEM discounts.
Microprocessor-directed
FEP; front-end polling
and console support
avail.; OEM discounts.
Dist. MPU FEP; up to
256 MPUs prog. to do
var. comm. proc. func .•
Front-end polling.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price. $
Monthly maintenance. $
Monthly laase/rental. $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
© 1987 OAT APRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS. CALL 1-800-328-2776
C13-010-124
Processors
All About Communications Processors
/-~
MIA-COM
970B MPX
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
MIA-COM
9724 RPX
MIA-COM
9000lllPX
Micom
MicroBOO/X.25
Most vendors via X.25
Most vendors via X.25
No (X.25)
No (X.25)
Most vendors via
communications
No IX.25)
Yes
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
7
Yes
No
Yes
No
X.25
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
23
Yes
No
Yes
No
X.25
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
600+
Yes
No
Yes
No
X.25
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
24
Yes
No
No
No
X.25
Most
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
8
24
640
24
19.2K
None
64K bps
None
64K bps
None
19.2K bps
None
Host Channel Extender:
Not applicable
Not applicable
Not applicable
-
Yes
Yes
Yes
No
No
Yes
No
No
Yes
Yes
Yes
No
No
Yes
No
No
Yes
Yes
Yes
No
No
Yes
No
No
Yes
Yes
Yes
No
No
Yes
Yes
Yes
No
No
No
-
Intel 186
16
640K
Byte/block
Intel 286 and 186
16
2MB
Byte/block
Intel 186 & 286
16
Over 50MB
Byte, block
Z80A;Z80B
8
64K
Byte
DMA/lnterrupt
Not applicable
Not applicable
Disk, tape, console
DMA/lnterrupt
DMA/lnterrupt
DMA
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across lID channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
lID, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
-
-
Disk, tape, console
Disk, tape, console
Yes
Yes
Yes
Interrupt
None
None
Yes
Async terminals
Yes
Yes
Yes
Yes
Yes
Firmware
Firmware
Firmware
Firmware
IPL method
Additional software supported
Downline load
Remote diagnostics
Downline load
Remote diagnostics
Downln. load/loc reload
Remote diagnostics
Int. self/downline load
None
User programmability
Yes, via user-selected
parameters
Part of full network
Yes, via user-selected
parameters
Part of full network
Yes, via user-selected
parameters & programs
Part of full network
Yes, via user-selected
parameters
Options only
All
All
All
All
Memory probe & patch,
rem. loop from NMC
Events, statistics,
accounting
Mem. probe & patch, rem
loop from NMC, loc diag
Events, statistics,
accounting
Mem. probe & patch, rem Yes
loop from NMC, loc diag
Events, statistics,
Yes
accounting
Under 10,000
Contact vendor
Contact vendor
Under 20,000
Contact vendor
Contact vendor
30,000
Contact vendor
Contact vendor
2,050
Contact vendor
Contact vendor
-1986
-
-
M/A-COM
-1986
-M/A-COM
No
1982
2,000
Independent distributors.
Part of M/A-COM's
Integ. Packet Network;
full net. mgmt. cap.;
VC reconnect, loc. reid
Part of M/A-COM's
Integrated Packet
Network; full network
management capability.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
1984
-
MIA-COM
Part of MIA-CaM's
Integrated Packet
Network; full management capability.
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CAll 1-800-328-2776
-
APRil 1987
/
C13-010-125
Processors
All About Communications Processors
Micom
MB2-XAP-STD
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Micom
MB3-XAP-STD{
MB3-XAP-HS
Micom
MB3-CSW
Micom
MB3-BSC-STD
Most vendors via X.25
Most vendors
Most vendors via X.25
DSP compatible
Yes
Yes
Yes
Yes
Yes
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Unlimited
Yes
No
Yes
Yes
X.25
No
Not applicable
Not applicable
No
Not applicable
Yes
254 channels
Yes
No
No
No
Micro 800 {proprietary
Yes
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Unlimited
Yes
No
Yes
Yes
X.25
Yes
Not applicable
Not applicable
327X
Not applicable
Yes
Unlimited
Yes
No
Yes
Yes
X.25
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
16
10
16
4
9600 bps
None
19.2K bps
None
9600 bps
None
19.2K bps
None
Host Channel Extender:
-
-
-
-
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Yes
Yes
Yes
No
No
Yes
110-9600 bps
Yes
Yes
Yes
Yes
No
No
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
No
No
Yes
110-9600 bps
Yes
Yes
Yes
Yes
No
No
Yes
110-9600 bps
Yes
Interface to Ethernet LAN
No
No
No
No
280A
256K
8K
Byte
Z80B
8
256K bytes
Byte
Z80B
512K
8K
Byte
Z80B
512K
8K
Byte
Interrupt
Interrupt
Interrupt
Yes
Interrupt
Interrupt
None
Diagnostics built in
Interrupt (STD)
Interrupt
DMA/lnterrupt
Yes
DMA/lnterrupt
Interrupt
Interrupt
Yes
Yes
Yes
Yes
Yes
COMMUNICATIONS FEATURES{FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Yes
-
Yes
Yes
Firmware
Firmware
Firmware
Firmware
IPL method
Additional sohware supported
Inter. self{downline Id
No
Internal self-load
Not applicable
Intern. self/down load
No
Internal seit-Ioad
No
User programmability
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
None
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
All
All
All
All
All
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
1,790
Contact vendor
Contact vendor
600, plus MB3-4/MB3-1O 2,250
Not applicable
Contact vendor
Not applicable
Contact vendor
-
Not applicable
1986
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
(
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
1986
-Independent distribu-
-Independent distribu-
tors
Expand. from 4 ch. to
16 channnel async PAD;
compat. w{ Micom's X.25
control system.
tors
Interconnects 4 or 10
Micro 800/2, 800/2M, or
MB2-ESM composite; supports ch. speed conver.
-
1986
3,740
Contact vendor
Contact vendor
-1987
-
-
Independent distributors
Expand. from 4 ch. to
16 ch. PAD; compatible
with Micom's X.25 control system.
Independent distributors
Supports up to 64 3270
BSC devices; compatible
with Micom's X.25 control system.
© 1987 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-32B-2776
C13-010-126
Processors
All About Communications Processors
SUPPLIER AND MODEL
Micom
MB3-PSW-STD/
MB3-PSW-HS "
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors via X.25
Most vendors via X.25
Yes
Yes
IBM 360/370, 303X, NCR IBM 360/370, 303X, NCR
8500, 8600, 308X, 43XX 8500/8600, 308X, 43XX
Yes
Yes
Yes
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Unlimited
Yes
No
Yes
Yes
X.25
Yes
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Unlimited
Yes
No
Yes
Yes
X.25
Yes
2
2
270X, 37XX w/ NCP
PU Type 5, PU Type 4
Yes
2
Yes
No
No
No
SNA. OSI
Yes
8
4
270X, 37XX w/ NCP
PU Type 5, PU Type 4
Yes
4
Yes
Yes
No
No
SNA, OSI
12
24
32
80
-
None
19.2K bps
None
-
-
64K bps
More than 9.6K-halved;
less than 9.6K-none
No
256K bps
More than 9.6K-halved;
less than 9.6K-none
No
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Yes
Yes
Yes
No
No
Yes
110-9600 bps
Yes
Yes
Yes
Yes
No
No
Yes
110-9600 bps
Yes
Yes
Yes
Yes
Yes; Async to 3270 BSC
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes; Async to 3270 BSC
Yes
Yes
110 to 9600 bps
Yes
Interface to Ethernet LAN
-
No
No
No
Z80B
512K
8K
Frame
Z80B
512K
8K
Byte
Proprietary
32
4MB
Byte or block
Proprietary
32
4MB
Byte or block
Interrupt (STD)
Interrupt
Interrupt
Yes
Interrupt
Interrupt
Interrupt
Yes
Yes
Yes
Interrupt
DMA
DMA
Hard disk, diskette,
console
Yes
Interrupt
DMA
DMA
Hard disk, diskette,
console
Yes
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
Host Channel Extender:
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
Micom
MB5-XAP-STD
"
NCR ComtenComten 5620
NCR ComtenComten 3690
Yes
Yes
Yes
Yes
Firmware
Firmware
Software
Software
IPL method
Additional software supported
Internal self
No
Intern. self/down load
No
RCP load via hard disk
Manual load from disk.
NCR Comten networking & NCR Comten networking &
connectivity software
connectivity software
User programmability
Yes, via user-selected
parameters
All
Yes, via user-seiected
parameters
All
Yes
Yes
All
All
All
All
Infor. not available
Infor. not available
Yes
Yes
-
-
Yes
Yes
Yes
Yes
3,740
Contact vendor
Contact vendor
4,350
Contact vendor
Contact vendor
22,575
162
985 (3-yr. lease)
69,420
332
2,844 (3-yr. lease)
-1986
1986
No
1985
Infor. not available
NCR Comten
No
1978
Infor. not available
NCR Comten
RCP load also via trunk
reload via disk; does
not need computer centr
envir., oper. in office
Downloads from host;
RCP load via hard disk
or comm. line; reload
via hard disk.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
Independent distributors
DMA/lnterrupt (HS); expando from 6 to 12 link
packet switch;compat.
w/ Micom X.25 Control.
Independent distributors
Expandable from 8 ch.
to 24 ch. async PAD;
compat. w/ Micom X.25
Control System.
© 1987 DATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
C13-010-127
Processors
All About Communications Processors
NCR ComtenComten 3695
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
Host Channel Extender:
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
NTX Communications
Corporation
NTX 3800-Model 2.1
Netlink Inc.
Network SNA-Hub
NCR 8500/8600. IBM 360 IBM 360/370. 303X,
370, 303X, 308X, 43XX 308X, 43XX, & compat.
Yes
Yes
Most vendors
No
IBM and plug-compatible mainframes
Yes
Yes
8
8
270X, 37XX w/ NCP
PU Type 5, PU Type 4
Yes
8
Yes
Yes
No
No
SNA,OSI
No
Not applicable
Not applicable
Not applicable
PU Type 2, PU Type 5
Yes
16
Yes
No
Yes
PC controller
SNA
Yes
4
2 local, mult. remote
CTCA
Not applicable
No
Not applicable
No
No
No
No
SNA
Yes
8
8
270X, 37XX w/ NCP
PU Type 5, PU Type 4
Yes
8
Yes
No
No
No
SNA, ISO
512
1,024
16
8
256K bps
More than 9.6K-halved,
less than g. 6K -none
No
256K bps
None
64K bps
None
512K bps
Halved
No
No
No
Yes
Yes
Yes
Yes, Async to 3270 BSC
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
No
No
Yes
No
No
No
No
ARO-CRC
No
No
No
No
No
No
Proprietary
32
4MB
Byte or block
Proprietary
32 bits
16MB
Byte or block
8086, 80188
16 bits
1MB
Not applicable
Proprietary
8 bits
96K
Block
Interrupt
DMA
DMA
Hard disk, diskette,
console
Yes
Interrupt
DMA
DMA
Hard disk, diskette,
console
Yes
DMA/lnterrupt
Not applicable
Not applicable
Not applicable
DMA/lnterrupt
Not applicable
Not applicable
PC
Yes
Yes
Yes
Yes
Future
No
Firmware/software
combination
Download from host
None
Proprietary host-based
software
Internal
Not applicable
Software
Software
IPL method
Additional software supported
Manual load from disk.
NCR Comten networking
& connectivity software
Manual load from disk.
NCR Comten network.
connect. software
User programmability
Yes
Yes
No
Confi!;Juration macros
Software separately priced
All
All
None
Yes
Infor. not available
Infor. not available
None
-
-
ROM/RAM-based, NPDA
Yes
Yes; localloopback
when offline
Yes
Yes; local/remote loopback, remote reconfig.
Link loading, error
rates, etc.
124,420
473
5,136 (3-yr. lease)
310,000
694
10,485 (3-yr. lease)
No
1986
Infor. not available
NCR Comten
No
1986
Infor. not available
NCR Comten
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
(-
NCR ComtenComten 5660
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
Download from host; RCP Download from host; RCP
load via hard disk or
load via hard disk or
communications line;
comm. line; reload via
reload via hard disk.
hard disk.
Yes
9,975 (port cards sep.)
-
76,370
400
2,854 (l-year lease)
-
Netlink
No
1985
Infor. not available
NTX
SNA concentrator and
router to IBM hosts or
host supp. SNA; routing
determ. by user.
Supports multiple links
up to 512K bps each;
full hardware redundancy.
1987 (second quarter)
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13-010-128
Processors
All About Communications Processors
NTX Communications
Corporation
NTX 3800-Model 2.2
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
Host Channel Extender:
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
NTX Communications
Corporation
NTX 3800-Model 2.3
Paradyne
Pix/Pixnet
Paradyne
Pixnet-XL
IBM and plug-com patible mainframes
Yes
IBM and plug-compatible
mainframes
Yes
IBM S/370, 30XX,
43XX, and compatibles
Yes
IBM/370, 43XX, 30XX,
and compatibles
Yes
Yes
4
2 local. mull. remote
CTCA
Not applicable
No
Not applicable
No
No
No
No
SNA
Yes
4
2 local, mult. remote
CTCA
Not applicable
No
Yes
1
Multiple
Not applicable
Not applicable
Yes
Multiple
Yes
No
Yes
Yes
None
Yes
2
Multiple
Not applicable
Not applicable
Yes
Multiple
Yes
No
No
Yes
OSI-modeled
8
8
13
16
1024K bps
Halved
1.544M bps
Halved
56K bps (per line)
None
2.048M bps
None
No
No
Yes
Yes
Yes
No
No
No
No
ARC-CRC
No
No
Yes
No
No
No
No
ARQ-CRC
No
No
Yes
Yes
Yes
Async/3270; PC/3270
ASCII/EBCDIC
Yes
Yes
No
Yes
Yes
Yes
Async/3270, PC/3270
ASCII, EBCDIC
CRC
Yes
No
No
No
No
No
Proprietary
8
96K
Block
Proprietary
8
96K
Block
Proprietary
16
128K
Byte
Proprietary
16 bit
4MB
Block, byte
DMA/lnterrupt
Not applicable
Not applicable
PC
OM A/Interrupt
Not applicable
Not applicable
PC
DMA/lnterrupt
None
DMA/lnterrupt
Mag. tape; console
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Diskette, console
No
No
No
No
SNA
Yes
Yes
Yes
Yes
No
No
No
No
Firmware/software
combination, hardware
Intern. self-load, man.
Utilities
Firmware/software
combination
Internal
Utilities
Proprietary
Proprietary
IPL method
Additional software supported
Internal
Not applicable
Internal
Not applicable
User programmability
Configuration macros
Configuration macros
Self-configuring
No, vendor supported
Software separately priced
Yes
Yes
None
None
-
-
All
All
Yes; local/remote loopback, remote reconfig.
Link loading, error
Yes; local/remote loopback, remote reconfig.
Link loading, error
Yes, internal testing
Yes, internal testing
Yes
Yes
rates, etc.
rates, etc.
97,370
400
3,560 (l-year lease)
118,370
400
5,944 (l-yr. lease)
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
No
1985
Infor. not available
NTX
No
1985
Infor. not available
NTX
No
April 1976
Over 6,000
Paradyne
No
March 1985
Over 500
Paradyne
Supports multiple links
up to 1024K bps each,
full hardware redundancy.
Supports mult. links up
to 1.544M bps each;
full hardware redundancy.
Permits remote peri pherals & CRTs to access
mult. IBM hosts/applic.
as loc. attac. devices.
Allows rem. peripherals
CRTs, etc. to access
IBM hosts as locally
attach. devices.
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
C13-010-129
Processors
All About Communications Processors
SUPPLIER AND MODEL
Peri phonics
Voicepac
Peri phonics
VoiceBox
Peri phonics
VoiceStar
40XX
Periphonics
VoiceStar
42XX
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major vendors
Most major vendors
Most major vendors
Most major vendors
Yes
Yes
Yes
Yes
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
Yes
7
3
7
3
370X, 3803,327X, 5250 327X, 370X
PU Type 2
PU Type 2
Yes
Yes
7
3
Optional
Optional
No
No
Yes
Yes
Yes
Yes
SNA
SNA
Yes
Yes
Not available
Not available
1
2
370X, 3803, 327X, 5250 370X, 3803, 327X, 5250
PU Type 1,2
PU Type 1,2
No
No
Does not apply
Does not apply
Yes
Yes
Yes
No
Yes
Yes
Yes
No
SNA
SNA
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
104
32
8
16
9600 bps
Minor
9600 bps
Minor
9600 bps
Minor
9600 bps
Minor
Host Channel Extender:
Yes
Yes
Yes
Yes
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Yes
Yes
Yes
Yes
Yes
All industry standards
Yes
Yes
No
Yes
Yes
Yes
Yes
Industry standard
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Interface to Ethernet LAN
No
No
Yes
Yes
LSI 11/23; LSI 11/73
16
320K
Byte
LSI 11/23
16
128K
Byte
80286 and LSI 11
16 bit ECC
1M
2 bytes
68000 and LSI 11
16 bit ECC
Up to 2M
2 bytes
Interrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, floppy
Interrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, floppy
Interrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, disk,
floppy
Yes
Interrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, disk,
floppy, tape
Yes
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Yes
Yes
Yes
No
No
Yes
Proprietary software
Proprietary software
Unix based
Unix based
IPL method
Additional software supported
Download or disk load
I/O Gen, Pave, Param,
Utalk
EPROM based
None
Hard disk
Voice dialog utility,
reI. dbms, Pave, Paramo
Utalk, high-level lang.
Hard disk
Voice dialog utility,
reI. dbms, Pave, Utalk,
Param, High level lang.
User programmability
Yes, voice dialog and
basic edit functions
All
No
Yes
Yes
All
All
All
75%
40%
100%
100%
Yes, local and remote
loopback
Traffic loading
Yes, local and remote
loop back
Traffic loading
Yes, local and remote
loopback
Traffic loading
Yes, local and remote
loopback
Traffic loading
25,00
250 min., variable
Variable
20,000
Approx.200
Variable
35,000
Approx.350
Variable
50,000
Approx.5oo
Variable
No
1981
350
Periphonics
No
1983
25
Peri phonics
No
1985
Infor. not available
Peri phonics
No
1985
Infor. not available
Periphonics
Handles data & voice
interchang. via single
I/O port; can convert,
concentrate Prot./code.
Solid state unit can
concentrate, convert
protocol & code; serve
as remote network node.
Low end transaction
processing sys. with
voice respse., handheld
terminal. & PC support.
Transaction processing
system with voice
response, hand-held
terminal, & PC support.
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13-010-130
Processors
AU About Communications Processors
Periphonics
VoiceStar
46XX
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Periphonics
VoiceStar
47XX
Telefile Computer
Products
Tele-Switch
Telematics
NET 25*
Most major vendors
Most major vendors
Most
Most',
Yes
Yes
Yes
-
Yes
Yes
Yes
3
7
Not applicable
4
7
Not applicable
370X, 3803, 2848, 327X 370X, 3803, 327X, 5250 No
PU Type 1,2
PU Type 1,2
Yes
Yes
Yes
4
7
Not applicable
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
SNA
SNA
X.25
-
No
Not applicable
Not applicable
No
-
Yes (packet switch)
4
No
No
No
Yes
None
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
50
96
450
480
9600 bps
Minor
9600 bps
Minor
153K bps
None
64K
Halved
Host Channel Extender:
Yes
Yes
No
-
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Yes
No
No
No
No
Parity, lRC and CRC
Yes
Yes
Yes
Yes
Yes
No
No
Yes
50 bps-19.2K bps
Yes
Yes
Yes
-
Multi 68000, LSI 11
32 bit ECC; 16 bit ECC
Up to 3M
2 or 4MB
Multi 68000 and LSI 11
32 bit ECC; 16 bit ECC
Up to 6M
2 or 4 bytes
M68000
16
64K to 4MB
Byte or block
MC68000/Telematics S1
32
16M
Block
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, disk,
floppy, tape
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
CRT, printer, disk,
floppy, tape
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Diskette
Yes
DMA/lnterrupt
DMA
DMA/lnterrupt
Removable disk (5M
bytes)
Yes
Yes
Yes
Yes
-
Real time, Unix based
Real time, Unix based
Software
User programmability
Hard disk
Voice dialog utility,
reI. dbms, Pave, Utalk,
Param, high level lang.
& netwrk. defin. uti I.
Yes
Hard disk
Voice dialog utility,
reI. dbms, Pave, Utalk,
Param, high level lang.
& netwrk. defin. util.
Yes
Firmware/software
combination
Internal selfload
Software separately priced
All
All
100%
100%
Yes, local and remote
loopback
Traffic loading
Yes, local and remote
loopback
Traffic loading
65,000
Approx.650
Variable
No
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications 'Iines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
IPl method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
-
Yes, via user-selected
parameters
Special applications
only
75%
Disk or remote port
Pascal; C
Yes
Yes
None
Yes; local loopback
-
Traffic loading,
outages
-
115,000
Approx.1,150
Variable
12,512
84
417 (3 yrs.)
45,900
275
None
70
Peri phonics
No
1985
Infor. not available
Periphonics
No
October 1980
200
Telefile
No
February 1984
500+
Telematics
Transaction processing
sys. w/ voice response,
hand-held term., PC, &
POS device support.
High capacity & thruput
transact. process. sys.
w / voice resp., handheld term., PC/POS supp
CCITT X.25 switching &
management capabilities; also contains
mUltiplexing protocol.
CCITT X.25 software
support; public or
private networks. 3270
support; '1986 infor.
-
© 1987 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
C13-010-131
Processors
All About Communications Processors
Telematics
Series 500,
1000,2000·
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
Host Channel Extender:
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating sohware:
Operating system implemented in
IPL method
Additional software supported
Tymnet
Micro-Engine
Tymnet
Mini-Engine
Most
Most major vendors
Most major vendors
Most major vendors
-
No
No
No
No
Not applicable
Not applicable
No
Yes
4
No
No
No
Yes
None
No
Not applicable
Not applicable
Not applicable
PU Type 2
Yes
4
Yes
No
No
Yes
SNA; X.25
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Configuration dependent
Yes
No
No
Yes
Tymnet proprietary X.25 based
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Configuration dependent
Yes
No
No
Yes
Tymnet proprietary X.25 based
480
6
Configuration dependent
Configuration dependent
64K
Halved
19.2K bps
None
19.2K bps
None
74K bps
None
-
No
No
No
Yes
Yes
Yes
No
No
Yes
50 bps-19.2K bps
-
Yes
Yes
Yes
Yes
ASCII to EBCDIC
Parity; LRC; CRC
No
Yes, some protocols
Yes
Yes
No
Yes, contact vendor
ASCII, Baudot, EBCDIC
Check sum w / retrans.
Yes
Yes
Yes
Yes
Yes
Yes, contact vendor
ASCII, Baudot, EBCDIC
Check sum w/ retrans.
Yes
Yes
-
No
No
Yes (internodal)
MC68oo0/Telematics Sl
32
16M
Block
Zilog Z80
8 bits
256K
Byte
Tymnet/proprietary
32
1M
Byte
Tymnet/proprietary
32
1MB
Byte
DMA/lnterrupt
DMA
DMA/lnterrupt
Removable disk (5M
bytes)
Yes
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Diskette
Interrupt
Not applicable
Not applicable
None
DMA/lnterrupt
Not applicable
Not applicable
Not applicable
Yes
Yes
Yes
-
Yes
Yes
Yes
Sohware
Sohware
Disk or remote port
Pascal: C
Internal self-load
CP/M, Macro 80, Wordstar, Plink II
Sohware with firmware
assist
Auto download-node/host
Various interface
software products
Sohware with firmware
assist
Auto. download-Eng/host
-
Various interface
software products
User programmability
Yes
Software separately priced
Yes
Yes, via user-defined
parameters
All but O.S.
Yes, via user selected
parameters
All
Yes, via user selected
parameters
All
None
90%
100%
100%
-
Yes, power-on
diagnostics
Port statistics
Remotely accessable
software oper. monitors
Node/link/soft.-status,
loading, statistics
Yes, remotely accessible soft. op. monitors
Node/link/softwarestatus, load., statist.
26,000
150
None
7,920
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
No
December 1983
500+
Telematics
Infor. not available
April 1983
No
1983
2,000+
Tymnet
No
1981
1,000+
Tymnet
Sold as a node in a
complete network,
compatible with
Tymnet's public network
Sold as a node in compo
netwrk, compatible w /
Tymnet's pub. netwrk.,
avail. in dual config.
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
(
Tri-Data
Netway 200
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
CCITT X.25 software
support; public or
private networks. 3270
support; "1986 infor.
-
Tri-Data
Supports networks up to
50 nodes @ 32 devices
per node.
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
C13-010-132
Processors
All About Communications Processors
Tymnet
Engine
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
Host Channel Extender:
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/ demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
Most major vendors
-
No
No
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes
Configuration dependent
Yes
Yes
No
Yes
Tymnet proprietary X.25 based
No
Not applicable
Not applicable
Not applicable
Not applicable
Yes, terminal only
Configuration dependent
Yes
No
No
Yes
Tymnet proprietary,
X.25 based
Unisys
DCP/10A
Unisys Corp.
DCP/15
Unisys Series 1100,
Series 2200
Yes
Unisys Series 1100,
Series 2200
Yes
Yes
1
1
See comments
See comments
Yes
Any host in network
Yes
Custom
No
No
DCA
Yes
1/enclosure, 2 max.
l/enclosure, 2 max.
See comments
See comments
Yes
Any host in network
Yes, (init. host load)
Custom
No
No
DCA (see comments)
Configuration dependent
10
24
48
74K
None
9600 bps
None
64K
None
64K bps
None
No
No
RPQ
RPQ
Yes
Yes
Yes
Yes, contact vendor
ASCII, Baudot, EBCDIC
Check sum w / retrans.
Yes
Yes
Yes
Yes
No
Async to network
No
Check sum w / retrans.
110 to 9600 bps
Yes
No
Yes
Yes
Yes, several
Yes, several
Industry standards
Yes, 110 - 19.2K bps
Yes
No
Yes
Yes
Yes, several
Yes, several
Industry standard
-
No
No
Planned 1987
Planned 1987
Tymnet/proprietary
32
4MB
Byte
Tymnet-utilizing LSI-l1
16
60K
Byte
Unisys DCP /1 0
16
2MB
Block
Unisys DCP/15
16
4MB
Block
DMA/lnterrupt
DMA/lnterrupt
DMA/lnterrupt
Disk and tape
Interrupt
None
None
None
DMA
DMA
DMA
Disk
DMA
DMA
DMA
Disks
Yes
Yes, diagnostic report
Yes
-
Yes
No
Yes
Yes
Software with firmware
Firmware
assist
Auto down-disk/Eng/host Internal self load
Various interface softNone
ware products
Firmware/ software
combination
Downld. from host, disk
File transfer
Firmware/software
combination
Downld. from host, disk
File transfer
Yes, via user selected
parameters
All
Yes, via user-selected
programs
All
Yes, via user-created
programs
All
None
None
Yes, local and remote
Yes, local and remote
Several statistics
Several statistics
No
No
100%
100%
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
Tymnet ATC
(Asynchronous Terminal
Concentrator)
Remotely accessible
software oper. monitors
Node/link/softwarestatus, load., statis.
Yes, remotely accessible software op. mono
Node/link/softwarestatus, load, statistic
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
20,000
100
450 (5-yr. lease)
28,585 (includes soft.)
76
720 (includes software)
No
1978
1,000+
Tymnet
No
1984
400+
Tymnet
No
1985
400
Unisys
No
April 1987
-
Sold as a node in compo
network; com pat. w/
Tymnet's pub. network;
avail. in dual config.
Sold as a node in a
complete network; compatible with Tymnet's
Public network.
Full range of SNA coexist. software prod./
gateways; also, DON
gateway.
Full range of SNA coexistence software
products/gateways; also
DON gateway.
© 1987 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
Unisys
APRIL 1987
C13-010-133
Processors
All About Communications Processors
~
Unisys
DCP/20
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Unisys Series 1100,
Series 2200
Yes
Unisys Series 1100,
Series 2200
Yes
Unisys B2000, B3000,
B4000, V300 Series,
Yes
All Unisys; IBM S/370,
30XX, 43XX, & compat.
Yes
Yes
4
3
See comments
See comments
Yes
Any host in network
Yes (init. host load)
Custom
No
No
DCA, see comments
Yes
16
16
See comments
See comments
Yes
Any host in network
Yes (init. host load)
Custom
No
No
DCA, see comments
Yes
4
4
No
Yes
127
127
No
-
-
Yes
4
No
Yes
Yes
Yes
No
Yes
127
Yes
Yes
Yes
Yes
BNA, SNA, X.25
24
1,023
64K
None
64K
None
56K bps
Capacity halved
56K
None
Host Channel Extender:
RPQ
RPQ
-
-
No
Yes
Yes
Yes, several
Yes, several
Industry standards
Yes, 110 to 19.2K bps
Yes
No
Yes
Yes
Yes, several
Yes, several
Industry standard
Yes, 110 to 19.2K bps
Yes
No
No
No
Yes
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
Planned 1987
Planned 1987
-
-
Unisys DCP/20
16
2MB
Block
Unisys DCP/40
16
6MB
Block
-1.5MB
-
DMA
DMA
DMA
Disk
DMA
DMA
DMA
Console, disk, mag.
tape
Yes
DMA/lnterrupt
DMA
-
-
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
(
Unisys
CP9585
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
i1'
\\
Unisys
CP3680/
CP3680-01
Unisys
DCP/40
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1987
Yes
Byte
Console, disk, remote
diagnostics
No
CP 9585 multiprocessor
3.5MB
Byte
DMA
DMA
Mag. tape, fixed/remote
disk, printers, card
Yes
Yes
Yes
-
-
Firmware/software
combination
Download host, disk
File transfer
Firmware/software
combination
Host download & disk
File transfer
Firmware and software
combination
Download from host
NDL, DCS, switch,
switch-plus
Software and firmware
Yes, via user-created
programs
All
Yes, via user created
programs
All
Yes, via user selected
parameters
All
Yes
None
10%
Not applicable
Not applicable
-
-
Yes, local and remote
Yes, local and remote
Several statistics
Several statistics
47,350
245
1,080 (5-yr. lease)
103,600
590
2,340 (5-yr. lease)
No
January 1982
600
Unisys
No
September 1979
2,500
Unisys
Full range of SNA coexistence software
products/gateways; also
DON gateway.
Full range of SNA coexistence software
products/gateways; also
DON gateway.
64,050 (3680)
535
2,415
(3-yr. lease)
Yes
January 1978
300
Unisys
Redundant system.
© 1987 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
Internal self load
NDL,GEMCOS, BNA, SNA
Yes
40,739
217
1,560 (3-yr. lease)
Yes
1985
400
Unisys
~
C13-010-134
.Processors
All Ab6ut Communications Processors
Unisys
B974
SUPPLIER AND I\iIODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
B2ooo, B3OO0, 84000,
V300 Series
Yes
Direct attachment to host
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
2
1
No
No
-
No
Yes
No
No
X.25
Vita link
Communications
TransLAN
Unisys
CP2OO0
Vitalink
Communications
TransLiNK
A Series
-
-
Yes
No
No
Yes
25
25
PU Type 2
PU Type 2
Yes
Unlimited
No
No
Yes
Yes
BNA, SNA, X.25
No
Not applicable
Unlimited
No
Not applicable
Unlimited
-
PU Type 2
Yes
Unlimited
Yes
Yes
Yes
No
SNA/DECnet
-
SDLC
Yes
Unlimited
Yes
Yes
Yes
No
SNA, DECnet
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
96
24
1,4,8, 12, or 16
1,4,8, 12, or 16
56K bps
None
64K bps
None
2.048M bps
None
64K bps
None
Host Channel Extender:
-
-
No
No
No
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
CRC-16
Not applicable
Not applicable
Yes
No
Yes
No
No
CRC-16
Not applicable
Not applicable
No
Yes
Yes
Yes
Multi-processor
8 bits
3.5MB
Byte
Multi-processor
16 bits
1.5MB
Byte
MC 68010
32 bits
1.5MB
Block
MC 68010
32 Bit
1.5MB
Block
DMA
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
.
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
Interface to Ethernet LAN
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
-Disk, tape, console
-
Disk
DMA
DMA
Interrupt
Console
DMA
DMA
Interrupt
Console
DMA
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Firmware/software
combination
Downline load from host
Firmware
Software/hardware
combination
Internal self-load
Not applicable
Hardware/software
combination
Internal self-load
Not applicable
IPL method
Additional software supported
-
-
User programmability
No
No
Software separately priced
All
All
User selected
parameters
Not applicable
User-selected
parameters
Not applicable
None
None
5%
5%
-
-
Yes
Yes
Yes
Yes
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
-
-
Approx. proportion of currently installed
systems supplied as turnkey systems
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Data collected
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
Load from syst. or disk
1984
Infor. not available
Unisys
1986
Infor. not available
Unisys
-
-
10-15,000
-
9,000-12,500
-
December 1985
-
The NP III acts as
hardware host to all
Vitalink network products.
The NP III acts as
hardware host to all
Vitalink network products.
November 1984
1,600+
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
APRIL 1987
/
C13-010-135
Processors
All About Communications Processors
Vitalink
Communications
TransSDLC
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Direct attachment to host
No
FUNCTIONAL CONFIGURATIONS
Front-end processor:
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
PU type within network
Remote line concentrator:
Maximum no. of hosts served by one concentrator
Host-independent network processor:
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
64K bps
None
Host Channel Extender:
No
Interface to Ethernet LAN
,~,
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, backup, and diagnostic peripherals
supported
Support for remote console
MC 68010
32 Bit
1.5MB
Block
DMA
DMA
Interrupt
Console
Yes
Yes
User programmability
User selected
parameters
Not applicable
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
5%
NETWORK MANAGEMENT/CONTROL
CAPABILITIES
Diagnostic tests supported
Yes
Data collected
Yes
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
APRIL 1987
Yes
No
Yes
No
No
CRC-16
Not applicable
Not applicable
Hardware/software
combination
Internal self-load
Not applicable
IPL method
Additional software supported
COMMENTS
1,4,8,12. or 16
Yes
Support X.25 Level 3 capabilities
Communications operating software:
Operating system implemented in
(
PU Type 2
Yes
Unlimited
Yes
Yes
Yes
Yes
SNA/DECnet
Communications line capacity:
No. of half-duplex lines physically attachable to
processor
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
4
\\1
Yes
Not applicable
Unlimited
9,000-12,500
-
-
September 1986
100+
-
The NP III acts as
hardware host to all
Vitalink network
products.
© 1987 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED-FOR REPRINTS, CALL 1-800-328-2776
•
C13-01 0-1 01
Processors
All About Communications Processors
Communications processors can be defined as multifunctional, program-controlled, digital computers dedicated to
communications and able to serve as control points, or
nodes, in a data communications network. In general, such
a processor performs one or more of three major functions:
front-end processing, intelligent switching, and concentration. A front-end processor serves as a locally attached
peripheral device to one or more large computers dedicated
to applications processing, relieving them of the overhead
involved in message handling and network control. An
intelligent switch routes messages among the network's
various end points and participates in the network's control
and management either under the control of a master
(usually front-end) processor or as a peer of other intelligent switches. A concentrator controls a community of
terminals, clusters of terminals, or distributed applications
processors; gathers, queues, and multiplexes their transmissions onto one or more high-speed network trunks; and
participates in the network's control and management,
again either under the direction ofa master processor or as
a peer of other concentrators and switches.
Each of the three major functions is a combination of some
or all of the following subfunctions:
A communications processor can be defined as a
multifunctional device that may serve as a front
end to a mainframe, as an intelligent switch, or as
a remote concentrator. The report covers the communications processor design, its place in modern
network architectures, the evolution of the communications processor, the general advantages
and restrictions of today's communications processors, and the state of the communications processor marketplace.
In 1984, Datapro sharpened its definition of a
communications processor to include only truly
multifunctional. intelligent devices dedicated to
networking. Single-function devices such as protocol converters. terminal controllers, and X.25
PADs were given their own tab. Look for information on Protocol Conversion Systems behind Tab
C23 in Volume 2 of DATAPRO REPORTS ON
DATA COMMUNICATIONS.
This report also includes comparison charts outlining the major characteristics of 70 communications processors from over 25 vendors.
• physical transmission and reception of data
• data buffering and queueing
• multiplexing
• message framing and unframing
• control of transmission errors
• message sequencing
• protocol conversion
• message pacing and flow control
• message or packet assembly and disassembly
• route selection
• session establishment and disconnection
• formatting of data for use by specific host or terminal
applications
The eel 8400-Superband-is a specialized Tl Processor
designed to transfer large volumes ofdata between two host sites
at a rapid rate of speed (l.544M bps). Superband's softwaredriven architecture provides a large degree of system visibility
and control. Through the status panel and connected display
station, operators gain instantaneous access to important networkfunctions and error detection conditions. Superband attaches to as many as four existing IBM multiplexor or selector
channels and to any two offour possible Tl carrier facilities.
APRIL 1986
• reporting and logging of device or transmission errors or
failures
• fallback switching in case of host, device, or transmission
line failure
• gather and recording of network performance and traffic
statistics.
1:>
© 1986 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-102
Processors
All About Communications Processors
t>
The most sophisticated communications processors, especially those marketed primarily as front ends by mainframe
computer vendors, can perform all of these tasks. Indeed,
in a large, complex network governed by one or more
mainframe hosts, a front end must perform all but the last
three in the normal course of its operations. Front-end
processing is the most complex task a communications
processor can perform.
Intelligent switching is slightly less complex, since the
communications processor acting as a dedicated switch
need not carry on a running dialogue with a host computer,
and is not responsible for the end-to-end establishment and
disconnection of sessions. Still, an intelligent switch, in
normal operation, must perform all but the last five basic
functions. An intelligent switch differs from a simple
switch, such as a port selection and contention device,
because it must monitor the network's traffic and performance, either under the control of a master processor
(usually a front end) or as a peer among other intelligent
switches and concentrators, and change its behavior, notably the routing and pacing of messages, according to the
information it receives. A simple switch simply establishes
an information path according to instructions it receives
from a user or computer on one end of the connection.
Concentration is the least complex task a communications
processor can perform, and communications processors
acting as concentrators can easily be confused with less
sophisticated, single-function devices such as statistical
multiplexers, protocol converters, packet assembler/disassemblers (PADs), and terminal cluster controllers. Indeed,
with the widespread use of microprocessors and the declining cost of silicon intelligence, many devices at the high
ends of these lines are beginning to approach the functional
breadth of true communications processors. The difference
is that true communications processing, concentration included, is a dynamic process involving feedback from other
intelligent devices in the network. Statistical multiplexing,
protocol conversion, and packet assembly/disassembly are
basically static processes that do not change as conditions
change on the network. An intelligent concentrator participates in the control of the network, either under the direction of a master processor or as a peer of other concentrators and switches, receiving status information from the
network and changing its behavior accordingly: accelerating or withholding transmissions, initiating diagnostic procedures for pathways and devices in its local domain, and
controlling access to the network from its locally attached
devices. Some sophisticated terminal controllers, notably
IBM's 3274s, can perform some or all of these functions. A
concentrator differs from a sophisticated terminal cluster
controller by its position in the network's hierarchy: a
concentrator can concentrate data from a number of cluster
controllers, while a cluster controller concentrates data
only from a number of individual terminals. As an example, consider the relative positions in an SNA network of an
IBM 3705 acting as a remote node (concentrator) and an
IBM 3274 within that concentrator's domain. A user can
build an entire network from intelligent concentrators
communicating with one another as peers, but cannot do
the same with cluster controllers.
COMMUNICATIONS PROCESSOR DESIGN
The basic design of almost all communications processors
follows the same, three-tiered, hierarchical plan-a plan
that they share in general with their close cousins the digital
PBXs, and more generally with a number of other data
communications components.
The device's central processing unit (CPU) sits at the top of
the hierarchy along with its associated main memory; it
controls the communications processor's operation according to the rules and parameters of its operating software,
and, in front-end configurations, in conjunction with instructions from the host computer. In general, the CPU
performs the complex or dynamic tasks such as addressing,
route selection, protocol conversion, access control, session
establishment, application-level formatting, and error logging, and delegates the rote operations to subsidiary
components.
In most communications processors, some components
operating under the direction of the CPU perform general
functions involving the operation of the whole communications processor, while others perform functions dedicated to specific groups of lines. Among the former are the
host interfaces, the input/output (I/O) processors, the reference clock, and the operator interface. Among the latter are
the processor's line bases and line sets.
Communications processors configured as front ends must
have at least one host interface. The host interface handles
communications between the front-end processor and the
host's byte or block multiplexer, or selector channel. The
host interface buffers data from the front end's CPU,
assembles it into parallel bit streams of a format specific to
the attached host channel, and transmits it up the channel
to the host; for data coming from the host, it performs the
same process in reverse. The host interface's principal
function is conversion of data from the communications
processor's internal word size to that of the host computer.
Some communications processors contain one or more
input/output (I/O) processors that transfer data between
the CPU and attached storage peripherals, such as disk or
tape drives. In some cases, the I/O processors arbitrate
among the various line bases for access to main memory
and to the CPU, handling interrupts generated by the line
bases or host interfaces to gain the attention of the CPU, or
controlling the line bases' and host interfaces' access to
main memory. In communications processors with more
than one I/O processor, each I/O processor usually controls
a set complement of storage units or communications lines.
The reference clock generates a timing signal used by all
other components of the communications processor. In
many systems, reference timing is a function of the CPU.
Some systems have separate reference clocks for the timing
of signals at different data rates.
The operator interface allows a human operator to monitor
and control the communications processor and to run
diagnostic tests. In newer and more sophisticated systems,
the operator interface works under software control from a I:>
© 1986 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITEI)
APRIL 1986
/
C13-010-103
Processors
All About Communications Processors
'"--
It
The Chi Communications Processor functions as a front-end processor, a remote line concentrator, a
host-independent network processor, and a terminal controller. The
processor is designed to work with
the Sperry 1100 Series systems.
I:> dedicated console, which usually contains a CRT or similar
display unit and a printer for logging. In most communications processors, the operator interface works through a
front panel that contains a number of manual switches and
indicator lights.
All of the above-mentioned devices perform functions that
are shared among all communications lines; they sit just
below the CPU in the communications processor's internal
hierarchy. On the network side, the "business end" of a
communications processor, the line bases and line sets
complete the hierarchy.
A line base, sometimes called an attachment base, interface
base, or interface module, handles communications at the
Data Link layer between the communications processor
and a group of attached communications lines that share a
common synchronization pattern, line speed, and sometimes, protocol. Each line base usually contains a dedicated
microprocessor that performs such functions as framing
and stripping, message buffering, message sequencing, synchronization, and error detection under the direction of the
CPU. Most current communications processors accommodate from 8 to 32 line bases, each of which handles from
two to eight line sets.
A line set handles communications at the Physical layer
between its attached line base and from one to eight
communications lines. All the communications lines attached to a given line set must use the same physical
interface at roughly the same data rate. The line set handles
serialization of data and interface-level control signaling.
(
All the components of the communications processor communicate with one another over a parallel data bus, usually
located along the back plane or a side plane of the processor's cabinet. The physical bus architecture, made popular
in the design of minicomputers, allows for easy installation
APRIL 1986
and replacement of parts. In a hierarchical architecture
such as that of most communications processors, it also
makes for easy reconfiguration. To replace asynchronous
communications over voice grade lines with HDLC communications over wideband or satellite circuits for a 16-line
segment of a network, a user might need to replace only one
line base and eight line sets, rather than having to swap out
an entire front-end processor. The hierarchical design extends the communications processors' functionality over
time and helps to protect the user's investment in the face
of changing technology. Figure 2 shows the hierarchical
configuration of a generalized communications processor.
COMMUNICATIONS PROCESSORS AND NETWORK
ARCHITECTURES
The implementation of network architectures is perhaps
the most important ongoing theme in the development of
data communications. In general, there are two kinds of
network architectures: those designed to provide communications among computers and terminals from a specific
vendor, and those designed to provide open communications regardless of the vendor of the communicating devices. Mainframe vendor architectures include IBM's
SNA, Honeywell's DSA, Burroughs' BNA, and Sperry's
DCA. Open architectures include the CCITT's X.25 packet
switching specification and several "transparent" network
schemes marketed by communications vendors. The communications processor is the most important element in
both vendor-specific and open architectures. In the following paragraphs, we will use the International Organization
for Standard (ISO) reference model for Open Systems
Interconnection (OSI) to examine the different roles that
communications processors play in different kinds of network architectures.
In network architectures designed by mainframe computer
vendors, the communications processor functions most
© 1986 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
1:>
C13-010-104
Processors
All About Communications Processors
Front-end
Processor
Concentrator
Intelligent
Switch
Front-end
Processor
Concentrator
Intelligent
Switch
I--------r---i
Concentrator
Front-end
Processor
Figure 1. A communications processor can function as a front endfor one or more host computers, as an intelligent switching node not attached directly to any applications equipment, or as a remote terminal concentrator.
t> often
as a front end, and controls communications in
conjunction with one or more software systems in the host
computer. In general, the front-end processor handles the
Data Link through Session layers of the ISO model, with
host software implementing the Presentation and Application layers. The balance varies from architecture to architecture. In Sperry's DCA the DCP-Series front end has
control over many Presentation-layer functions, while in
IBM's SNA, the host's access method, along with software
residing in the 327X terminal controllers, handles communications down to the Session layer, with the 37XX front
end acting almost as a channel-attached packet switch. The
range of control assigned to front-end processors in other
mainframe architectures varies between those extremes.
In all the mainframe architectures, the same communications processor models that serve as front ends can also
function as intelligent switches and as remote concentrators. In these functions, the communications usually appear in smaller configurations than in the front-end role.
Communications processors working in mainframe architecture can also perform another important function in
conjunction with any of the other three, that of an intelligent gateway. In this application, the communications
processor provides the interface between the mainframe
network and communications facilities outside the archi-
tecture, particularly public, packet switched data networks
using the X.25 protocols.
The function of a communications processor differs between the two kinds of open architectures. In a full-scale
open architecture such as X.25, the communications processor serves entirely as an intelligent packet switch, implementing the Data Link through Transport layers through a
uniform set of complementary protocols. Designed specifically for public data networks, the X.25 protocols provide
ultimately for the establishment of virtual circuits, or logical paths through the network, for devices from any vendor. Communicating devices, computers or terminals, at
either end of the virtual circuit must handle the Session,
Presentation, and Application layers according to their own
protocols. Since, in a public network, the network provider
is responsible for network management, the X.25 communications processors in such a network carry a heavy load
of access, error, and class-of-service control, along with
many provisions for statistical recording of traffic and
,/
usage data that can be sorted by individual user account.
Communications processors designed to function as
switches in public networks are the likeliest to support
high-capacity attached storage devices such as disk and t>
tape drives.
© 1986 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
C13-01 0-1 05
Processors
All About Communications Processors
Host
Computer
Host I/O}
Channel
I
I
I
, - - - - , Control and
Maintenance
Panel or
' - - _..... Console
Common Control
Components
Line Bases
Line Sets
Communications Lines
Figure 2. The diagram shows the hierarchical, bus-based architecture ofa typical communications processor. Such a processor may contain more than one host interface, several liD processors, and many more line bases. Each line base serves communications lines ofa specific synchronization, speed, and protoco/' Each line set serves lines with a specific physical interface. The modular arrangement of line
bases and line sets on the processor bus allows easy configuration and reconfiguration.
t> Communications
processors operating in full-scale X.25
configurations seldom perform a gateway function. The
user must provide compatibility with the network's standard protocols, either through an X.25 software package
that resides in a participating host or its front-end processor, or through a packet assembler/disassembler (PAD)
that handles the Physical and Data Link layers of the
architecture. Table 1 shows the protocols supported by
various vendors' communications processors.
Transparent architectures are offered by vendors of communications equipment as a low-cost alternative to mainframe architectures and full-scale X.25 implementations.
These architectures are usually stripped-down versions of
X.25 without much of the network administration and
class-of-service overhead necessary to operate a public or
very large private network. In these architectures, the communications processor functions primarily as a switching
concentrator, providing services at the Data Link, Network, and Transport layers. Most such concentrators have
evolved at the high ends of lines of statistical multiplexers,
adding the crucial routing and flow control features that
qualify them as communications processors. Some such
products offer integrated network management functions
such as error logging and performance statistics, but most
rely on a separate, complementary network management
system to provide these functions.
APRIL 1986
THE EVOLUTION OF THE COMMUNICATIONS
PROCESSOR
The communications processor as we currently know it
came into being in the mid to late 1970s, the result of the
merger of several separate developments in both communications and data processing. Its direct ancestors were hardwired communications controllers such as the IBM 270X
and Sperry Univac CCM, relatively unintelligent combinations of large multiplexers and cabling concentrators designed to perform only the basic, rote operations of communications handling. These devices provided a physical
map of the network for the host, basically allowing it to find
each physical line in its logical polling sequence and performing simple error notification for the host.
Two developments in the late 1960s provided the technical
base for the modem communications processor: the minicomputer and the ARPAnet. The minicomputer provided
a small, relatively inexpensive, software-controlled machine that could perform any of a number of functions
more efficiently than a mainframe, and incidentally also
provided the bus architecture that gives communications
processors their modularity and flexibility. The ARPAnet,
the first large-scale packet switched data network, provided
the fundamental design principles for all current data communications architectures. One of these principles was the t>
© 1986 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-106
Processors
All About Communications Processors
TABLE 1. TERMINAL PROTOCOLS SUPPORTED
IBM BSC
IBM
SDLC
"Other
BitOriented
Protocols*
Yes
Yes
Yes
No
GTE Telenet,
Tymnet, Datapac
N600/XAP PAD
N600/XAP PAD
N600/XAP PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
No
No
No
Yes/DCE
Yes/DCE
Yes/DCE
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
LSI-X.25 Front-End
Yes
No
No
No
GTE Telenet,
Tymnet, Euronet
LSI-X.25 Int. Concent.
Yes
No
No
Yes
Yes
LSI-X.25 Host Port
Concentrator
Yes
No
No
No
Yes
Same as above, and Telex
and Teletex
Century Analysis OSI
Yes
No
No
No
No
-
Chi Comm. Processors
Yes
Yes
No
Yes (HDLe)
Telenet
Computer Communications
CC-6
CC-8
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
No
No
GTE Telenet,
Tymnet
GTE Telenet,
Tymnet
Control Data
2551-3 & 2551-4
Yes
Yes
No
No
GTE Telenet,
Tymnet, Datapac,
Transpac, BPO,
ITT
DCA
355
Yes
Yes
Yes
Yes
335
Yes
Yes
No
No
375
Yes
Yes, IBM
3270 BSC
No
No
GTE Telenet,
DEC DDCMP-trunk only
ITT, RCA
GTE Telenet
Tymnet, Datapac,
Uninet, Autonet,
PSS
Yes, Telenet,
Accunet, Cylix, PSS, Autonet
Tymnet, Uninet,
Transpac,
Datapac
Honeywell Datanet 8
Yes
Yes
No
Yes (HDLe)
GTE Telenet,
+ 10 DDNs
VIP, PVE, RCI, LHDLC
IBM
3705-11 (E 1 thru L4)
3705-80
3725
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
GTE Telenet
GTE Telenet
GTE Telenet
-
Icot
251
Yes
No
No
No
352
35X
254
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
HDLC
Tymnet, Telenet,
Uninet, PDNs
No
No
Yes
257
Yes
Yes
Yes
HDLC
Yes
ASCII
async./
TTY
Amdahl 4705
Amnet
N6000/XAS
N6000/XPS
N6000/XTS
Manufacturer/
Product Name
Burroughs Corp.
CP9558-1
CP3680/CP3680.Q1
CP9585
Cableshare
CSI Data Concentrator
CC-80/85
X.25
Packet
Level
Other Protocols Supported
NCR, Burroughs
Tinet, Visa
PARS, Burroughs
Most Burroughs protocols
Most Burroughs protocols;
some IBM protocols
-
Uninet, Datapac
PSS, Transpac, Datanet,
Telepac, DATEX
Same as above, and Telex
and Teletex
Rem 1, NTR, Uniscope 100 &
200, UTS
Telex
Telex, 83B3
Telex, 83B3, PARS, SABRE,
ARINC
-
-
NCR, AIRINC
-
Univac U400
NCR 279, VISA, Tinet,
Burroughs P/S
NCR 279, VISA, Tinet,
Burroughs P/S
*Other bit-oriented protocols include AOCCP, HOLC, BOLC, and UOLC.
© 1986 OAT APRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
C13-010-107
Processors
All About Communications Processors
TABLE 1. TERMINAL PROTOCOLS SUPPORTED (Continued)
ASCII
async./
Manufacturer/
Product Name
Other
BitOriented
Protocols·
Packet
Level
X.25
TTY
IBM BSC
IBM
SOLC
Yes
Yes
Yes
Yes
Yes
Virtually all are supported
Yes
Yes
Yes
Yes
No
Yes
No
RPQ
RPQ
RPQ
Request price quotation
Request price quotation
M/A-Com DCC
CP 9000 Series I
CP 9000 Series II
No
Yes
No
Yes
No
Yes
Yes
HDLC (LAPB)
Yes
Yes, Uninet
Micom
Micro8oo
Yes
No
No
No
Async
No
No
No
Yes, Telenet,
Tymnet, Datapac,
Transpac,
Datex-P, Telepac
No
Yes
Yes
Yes
Yes
3670 Model 85
Yes
Yes
Yes
Yes
3690 (A5-E5, Tl-Ul)
721-11
5620
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
NTX
3800 Modell
3800 Model 2
No
No
Yes
No
No
No
No
No
No
No
NDLC (extended HDLe)
NDLC (extended HDLe)
Paradyne
Pix/Pixnet
Yes
No
No
Paradyne SDLC
No
-
Pixnet-XL
No
No
No
HDLC, LAPD
-
-
Peri phonics
VoiceBox
Yes
Yes
Yes
No
No
-
Sperry
DCP/40 & DCP/20
Yes
Yes
No
Yes
Yes
REM1, NTR
Telefile
Telepac
Yes
Yes
Yes
No
All major U.S. and
European
networks
-
Telematics
Net 25
Series 500, 1000, 2000
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
-
Tymnet
Micro-Engine
Yes
Yes
Yes
Yes
Yes
Mini-Engine
Yes
Yes
Yes
Yes
Yes
Engine
Yes
Yes
Yes
Yes
Yes
Tymnet ATC
Yes
No
No
No
No
Infotron
990NP Network Processor
Lemcom Systems
CMC-4, CMC-8, & CMC-32
Distributed Network
Processor Series
Micro860
NCR Comten
3650 & 3670
X.75
No
-
-
(
@
-
Transpac, Uninet, 83B3
Datapac, others
GTE Telenet,
Tymnet, Uninet,
Transpac,
Datapac, Datex-P,
UKPSS
Yes
83B3
NCR BSC & in-house DLC
Yes
Yes
*Other bit-oriented protocols include AOCCP, HOLC, BOLC, and VOLC.
APRIL 1986
Other Protocols Supported
1988 OATAPRO RESEARCH CORPORATION. DELRAN, NJ 08076 USA
REPRODUCTION PROHIBITED
VIP-nOO, Telex, TI-Net,
X,PC, Wang, DDCMP,
UTS-400
VIP-nOO, Telex, TI-Net,
X.PC, Wang, DDCMP,
UTS-4oo
VIP-nOO, Telex, TI-Net,
X.PC, Wang, DDCMP
None
C13-010-108
Processor's
All About Communications Processors
t> intelligent virtual circuit switch, the first functional communications processor.
A later development in minicomputer applications created
the distributed processor, a small computer, dedicated to
part' of a larger application, that performed, as one of its
necessary functions, communications with its peers in a
distributed network. Distributed processing contributed
the idea of intelligent communications handling under
software control. Indeed, network architectures from such
minicomputer vendors as Digital Equipment Corporation
and Hewlett-Packard are applications oflater communications developments onto the framework of distributed
processing among minicomputers.
The lower cost of dedicated processing in small computers
and the increasing cost of mainframe processing power
made the idea of a dedicated small computer to off-load
intelligent communications handling from the mainframe
economically practical. The first intelligent front ends, such
as IBM's 3704, predate modem network architectures, and
to a large extent, made such architectures possible.
In the late 1970s, IBM's SNA and the ISO's OSI model, the
earliest general network architectures, advanced the idea of
data communications as an entirely separate function from
applications processing, and of the network as a physicat
entity separate from its participating hosts and 'terminals.
The best way to implement a physically separate communications function is through a system of small computers
dedicated to communications. Such communications processors could be placed at the front end of the mainframe,
or could function independently as concentrators and
switches within their respective architectures.
One further development produced the communications
processor as we know it today: the microprocessor. The
advent of cheap silicon intelligence allows designers to
implement the hierarchical scheme of the typical communications architecture in hardware, with dedicated microprocessors performing low-level functions and reporting to
larger and more complex processors at the higher levels.
Indeed, some line bases in present-day communications
processors are programmable, receiving downloads from
the units' CPUs that describe the protocol and synchronization each is to use. Some newer systems are composed
entirely of redundant, microprocessor-controlled modules,
each of which can perform any of the functions of any other
with the proper software load; such a processor is actually a
distributed communications network in a box.
The advent of the microprocessor has also begun to blur the
distinction between traditional communications processors and less broadly functional devices such as multiplexers and terminal controllers, and has created a new class of
intelligent protocol converters dedicated to a task that was
once economical only as a function within a multifunctional communications controller. Now, even modems can
detect, report, and in some cases correct transmission
errors, and sense the conditions oftransmission lines. The
old definition of a communications processor as a computer that has been programmed to perform one or more
control and/or processing functions in a data communications network now includes everything from modems and
dedicated monitoring equipment up to the IBM 3725.
In answer to this shifting definition, Datapro offers a
section in Volume 2 of DATAPRO REPORTS ON DATA
COMMUNICATIONS, Tab C23, entitled Protocol Conversion Systems. In this section, the reader will find information on many product categories formerly covered in
this report: protocol converters, intelligent terminal controllers (with conversion capabilities), and PADs, to name
three. To complement the C23 section, we have sharpened
the focus of this C13 report to include only true, multifunctional communications processors.
ADVANTAGES AND RESTRICTIONS
NCR Comten's 5620 can handle up to 32 communications lines
and channel attaches to one or two IBM or NCR host computers. A fully configured Comten 5620 consists of a CPU, two
communications subsystems, a channel interface unit for host
connection, and a fixed disk drive.
The principal advantage of a communications processor as
a networking tool is the physical and logical separation of
the networking function from the application of its end
users. Whatever its architecture, such a network can function for any application, can grow in size without qualitative change to accommodate new applications, and can
© 1986 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
\ ..../
t>
I,
C13-010-109
Processors
All About/Communications Processors
1> accommodate new applications through the installation of
relatively standard, intelligent components. In simpler
terms, the user does not have to redesign and rebuild a
modular network to accommodate a change in the network's ultimate purpose.
Programmable, software-controlled communications processors are an especially handy tool in such standalone
networks because they can accommodate not only changes
in application but also the effects of technical progress. A
software-controlled communications processor with a good
design can survive several breakthroughs in networking
technique through relatively simple upgrades. The newer,
microprocessor-controlled line bases, and even line sets,
provide an even more flexible buffer against obsolescence.
In operation, a network controlled by communications
processors can survive the total failure of one or more of its
host processors. In a multihost network, front-end processors can switch users from applications in a failed host to
similar or identical applications in a backup host, perhaps
elsewhere on the network. In a single-host network, a
functioning front end allows for a graceful degradation of
service in the event of a host failure, perhaps allowing users
time to terminate their tasks before total system failure, or
allowing communications among distributed application
processors in the absence of the controlling host.
Also in operation, the communications processor still fulfills its original purpose; relieving the host of the overhead
generated in keeping track of a network. Today's networks
are orders of magnitude more complex than those of the
mid 1970s when the first communications processors appeared, and thanks to the ever lower cost of memory and
processing power, some oftoday's communications processors are bigger, faster, and more powerful than that era's
mainframes. They need to be.
Among the restrictions oftoday's communications processors are complexity and incompatibility. In an era of userfriendly hardware and software, the communications processor remains a device with which only a trained engineer
should meddle. Most require that their programs be written
in an arcane, assembler-level language, sometimes with the
benefit of pregenerated macros in the host access method,
often without.
Even with recent advances in simplicity and modularity,
configuring a communications processor to suit a specific
network or application can be difficult. With today's microprocessor technology, the better communications processors are the simpler; as an example, IBM's 3725 Communication Controller sports a parts list only half as long as that
of the older 3705. The trend is toward fewer components
each of which can do more, but most communications
processors are still lagging a bit behind that trend.
Despite the advent of open architectures and the impending arrival of truly standard protocols, the integration of
terminals, computers, and protocols foreign to a given
vendor's architecture remains difficult. The gateway function is a plus, but it is cumbersome and often expensive.
APRIL 1986
DCA's System 334 Bisync Network Processor lets users at a
remote IBM 3270 Information Display System terminal, or
equivalent, communicate with an IBM host computer. The
System 334 supports alternate routing, network switching, and
port contention.
Most vendors are beginning to offer some level of IBM
compatibility through their communications processors,
but balk at anything beyond concession to the obvious
market leader.
THE CURRENT MARKETPLACE
The market for full-scale communications processors can
be broken down into four segments: IBM and plug-compatible communications processors for the IBM mainframe
environment; communications processors dedicated to the
mainframe architectures of vendors other than IBM; packet-switching processors marketed as components of large,
vendor-independent private networks; and intelligent concentrators designed to serve in transparent network
architectures.
In the IBM world, IBM sells 90 percent of the communications processors. The remaining 10 percent accounts for
some of the most intense competition in data communications. Within that market, NCR Comten is the clear leader,
followed by Amdahl, Computer Communications Inc., and
NTX.
The other mainframe vendors, Burroughs, Control Data,
Honeywell, NCR, and Sperry do not really compete with
one another in the communications processing marketplace. Each features a line of communications processors
dedicated to its network architecture, and each line of
communications processors has its merits. Honeywell's
Datanet 8 line features a broad array of compatibility
software. Sperry's DPC Series goes farther than most in
providing host-independent networking.
1:>
© 1986 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-110
Processors
All About Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS
The comparison charts that follow this report list the major
characteristics of 70 commercially available communications processors. The text below explains the chart entries, in order of their
appearance on the charts.
Terminal-initiated application switching. A "yes" for this entry
indicates that the processor in question supports the selection of
applications within a session between an attached terminal and an
attached host, at the terminal's request.
Computer systems interfaced. For processors that serve IBM and
plug-compatible mainframe computers, we assume that they serve
the entire, upward-compatible IBM line (IBM 370, 303X, 308X,
and 43XX) along with the major plug compatibles. For processors
operating in open network architectures, we list "Most major
vendors."
Communications processor initiated dynamic line reconfiguration.
Dynamic line configuration is another name for fallback switching. A "yes" for this entry indicates that the processor in question
can switch a session from a connection involving a failed line or
communications processor component to a healthy connection
when it senses the failure, without operator intervention.
Functional Configurations
Protocol conversion. The most common protocol conversion is
from asynchronous ASCII to the synchronous trunk protocol
specified by a given architecture (e.g., IBM's BSC or SDLC, or
X.25's LAP-B). This entry specifies the types of protocol conversion the processor in question can perform.
Front-end Processors. A "yes" for this entry indicates that the
processor in question can serve as a channel-attached front end to
a mainframe computer. The next two entries list the maximum
number of hosts that can be channel attached, and the number of
those hosts that can be active simultaneously. A third entry lists
the degree ofIBM emulation the processor can perform.
Remote line concentrator. A "yes" for this entry indicates that the
processor in question can serve as a line concentrator remote from
any host processor in its network. The entry below lists the
number of hosts that concentrator can serve at one time.
Host-independent network processor. A "yes" for this entry indicates that the processor in question can control a network of open
architecture without the direction of a host computer.
Store-and-forward message switching processor. A "yes" for this
entry indicates that the processor in question can function as a
standalone, store-and-forward message switch.
Distributed processing node. Most true communications processors are not able to perform applications processing; however,
some, including a few intelligent concentrators, can support some
distributed applications in addition to their principal networking
function. This class of communications processor is becoming
rarer.
Terminal controller. A "yes" for this entry indicates that the
processor in question can function as a terminal controller within
its architecture.
Network architecture compliance. Some communications processors function exclusively within their vendors' network architectures; others support open architectures such as X.25. If a processor supports no network architecture, it may be a "transparent"
device, or it may support the prearchitectura! protocols of the
vendor(s) whose hosts it supports.
Communications line capacity. The five sections of this entry all
deal with the number of lines a communications processor can
support within specific ranges of data rates. The first three list the
maximum number of half-duplex communications lines the processor can support within the three specified speed ranges. The
fourth lists the highest data rate the processor can support. The
fifth lists the effect (if any) that converting all lines to full-duplex
operation would have on capacity. Where such a conversion has
an effect, it usually cuts the maximum in half.
Code conversion. The most common code conversion is from
ASCII to IBM's EBCDIC. This entry indicates which code conversions the processor in question can perform.
Error control. This entry specifies which of the available schemes
for error detection (e.g., Parity, LRC, or CRC) the processor in
question uses.
Automatic transmission speed detection. If the processor in question can sense the data rate of a given transmission without
intervention from the operator or user, this entry lists the speeds it
can sense.
Automatic disconnect of inactive dial-up terminals. Many communications processors can sense activity on their attached terminals
and disconnect a terminal session if it has been inactive for a
specified period of time. A "yes" for this entry indicates that the
processor in question can do so.
,
/
System Characteristics
Processor type. This entry lists the vendor and model of the
communications processor's CPU. Many communications processors use standard OEM microprocessors such as the Z80 or the
MC68000.
Main memory word size, bits. In most cases, the main memory
word size is also the width of the processor's internal transmission
path along its bus.
Main memory storage capacity, bytes. This entry lists the capacity
of main memory in the communications processor in question.
Large main memory capacity is useful for transmission with
modem, high-speed protocols in which large blocks of data must
be stored for retransmission in case of error. Abundant main
memory is also useful for the performance of a number of highlevel functions on a time-shared or interrupt basis.
Level of data unit transferred across I/O channel. Communications processors configured as front ends transfer data to and from
the host through an I/O channel. The width, in bits, of the I/O
channel, coupled with the communications processor's main
memory word size, yields the level of data transferred (e.g., byte,
or block).
Communications Features/Functions
Entries under this heading list a number of major functions a
communications processor can perform, but that not all communications processors do perform.
Multiplexing/demultiplexing. A "yes" for this entry indicates that
the processor in question can function as a multiplexer.
Type of data transfer supported between memory and a) communications lines, b) mass storage, and c) other peripherals. In some
communications processors, only the CPU has access to main
memory, and other components, such as line bases and I/O
processors must interrupt the CPU to read or write information in
main memory. In others, microprocessors in th.e subsidiary components have share control of main memory with the CPU, and
© 1986 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
/
-------~~~
--------------
-
--------
----
C13-010-111
Processors
All About Communications Processors
(
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS (Continued)
can read and write memory on their own. The latter process is
called Direct Memory Access (DMA).
I/O, backup, and diagnostic peripherals supported. Most communications processors interact only with their attached hosts and
terminals, and rely on host disk systems for storage and on host
software for detailed diagnostics. Some newer models, however,
support local disk storage for control software, traffic, and support
information, and feature diagnostic consoles for direct operator
intervention.
Support for remote console. Some processors that support local
operators consoles can also support an operator's console attached
over communications lines.
User programmability. This entry indicates the degree of control
users have over the control programs in the communications
processor. Some are programmable in the sense that users can
select among a number of preset configuration parameters, usually
from a menu. Others are fully programmable, usually through an
assembler-level language. Mainframe front-end processors usually
use a subset of their hosts' access methods implemented in
macros; other programmable communications processors use a
native assembler language.
Software separately priced. This entry shows to what extent the
communications processor's operating software is bundled with
the cost ofthe hardware.
Communications Operating Software
Operating system implemented in. This entry indicates how the
processor in question stores its control program: wired directly
and inflexibly into the hardware, in software that must be loaded
into memory from the outside, in firmware (local read-only
memory) onboard the processor, or in some combination of these.
IPL method. This entry indicates how the processor in question
receives its initial program load: from its host processor, from a
locally attached diskette activated by an operator, or from onboard
read-only memory.
Additional software supported. This entry lists any network control or applications software that the processor in question can
support.
t> Among vendors of private networks, the two U.S. public
network leaders, Tymnet and GTE Telenet have solid
offerings. Amnet also offers a line of packet-switching
processors.
A number of vendors offer intelligent concentrators, often
at the high ends of lines of statistical multiplexers. Among
these are Infotron, Micom, and DCA.
Datapro sent requests to over 30 firms known or believed
to manufacture communications processors. The absence
of any company from the charts means that the company
either failed to respond to our request by the deadline, was
unknown to us, or chose not to be listed. The Key to
Communications Processors Comparison Charts provides
a complete description of the comparison chart entries.
Communications Processor Vendors
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone
numbers of the vendors whose communications products
are shown in the comparison charts that follow.
Amdahl Corporation, 1250 East Arques Avenue, P.O. Box 470,
Sunnyvale, CA 94088-3470. Telephone (408) 746-6000.
Amnet, Inc., 1885 Worcester Road, Framingham, MA 01701.
Telephone (617) 879-6306.
Burroughs Corporation, Burroughs Place, Detroit, MI 48232.
Telephone (313) 972-7000.
APRIL 1986
Approximate proportion of currently installed systems supplied as
turnkey systems. A turnkey system is a system with which the user
need not participate in the configuration design; the user can
simply "tum the key" and have a working system. Conversely, a
turnkey system is one for which the user is denied the privilege of
a custom configuration.
Pricing and Availability. Entries under this header list purchase,
lease (or rental) and maintenance pricing for minimum and
maximum configurations, whether maintenance is bundled with
the lease or rental price, the product's date of first delivery, the
number of processors of that model the vendor has installed to
date, and the provider of service and maintenance for the product.
Cableshare, 20 Enterprise Drive, P.O. Box 5880, London,
Ontario, Canada N6A 4L6. Telephone (519) 686-2900.
Century Analysis, 80 Berry Drive, Pacheco, CA 94553. Telephone (415) 680-7800.
CHI Corporation, 26055 Emery Road, Cleveland, OH 44128.
Telephone (216) 831-2622.
Computer Communications Inc., 2610 Columbia Street, Torrance, CA 90277. Telephone (213) 320-9101.
Control Data Corporation, 8100 34th Avenue South, Minneapolis, MN 55420. Telephone (612) 853-8100.
Digital Communications Associates, Inc. (DCA), 1000 Alderman Drive, Alpharetta, GA 30201. Telephone (404) 442-4000.
Honeywell Information Systems, Inc., 200 Smith Street, Waltham, MA 02154. Telephone (617) 895-6000.
Icot Corporation, P.O. Box 5143, San Jose, CA 95150-5143.
Telephone (408) 433-3300.
Infotron Systems Corporation, 9 North Olney Avenue, Cherry
Hill, NJ 08003. Telephone (609) 424-9400.
International Business Machines Corporation, Old Orchard
Road, Armonk, NY 10504. Contact your local IBM
representative.
Lemcom Systems, Inc., 2104 West Peoria Avenue, Phoenix,
AZ 85029. Telephone (602) 944-1543.
M/A-COM Telecommunications Div., Comm. Network
Group, 11717 Exploration Lane, Germantown, MD 20874. J:>
Telephone (301) 428-5500.
© 1986 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-112
Processors
All About Communications Processors
1:> Micom Systems, Inc., P.O. Box 8100, Simi Valley, CA 930628100. Telephone (805) 583-8600.
Sperry Corporation, Computer Systems Division, P.O. Box
500, Blue Bell, PA 19424. Telephone (215) 542-4011.
NCR Comten, 2700 Snelling Avenue North, St. Paul, MN
55113. Telephone (612) 638-7777.
Telefile Computer Products, Inc., 17131 Daimler Street, Irvine, CA 92714. Telephone (714) 557-6660.
NTX Communications Corporation, 508 Tasman Drive, Sunnyvale, CA 94089. Telephone (408) 747-1444.
Telematics International, Inc., Crown Center, 1415 NW 62nd
Street, Fort Lauderdale, FL 33309. Telephone (305) 772-3070.
Paradyne Corporation, 8550 Ulmerton Road, Largo, FL
33540. Telephone (813) 530-2000.
Periphonics Corporation, 4000 Veterans Memorial Highway,
Bohemia, NY 11716. Telephone (516) 467-0500.
Tri-Data, 505 East Middlefield Road, Mountain View, CA
94039-7505. Telephone (415) 969-3700.
Tymnet-McDonneU Douglas Network Systems Company,
2710 Orchard Parkway, San Jose, CA 95134. Telephone (408)
946-4900. 0
~
,.,-/
© 1986 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
C13-010-113
Processors
All About Communications Processors
Amdahl
4705E
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
All IBM- and Amdahlcompatible mainframes
Amdahl
4705T
All IBM- and Amdahlcompatible mainframes
Amnet
N6000/XAS
Most vendors
No
Yes
Yes
Does not apply
6
6
4
4
Does not apply
270X/370X, EP, NCP, AC 270X/370X, EP, NCP, PEF Does not apply
Yes
Yes
Yes
Unlimited
Unlimited
112
No
No
Yes
No
No
No
No
No
No
No
No
No
SNA
SNA
OSI X.25
Amnet
N6000/XPS
Most vendors
No
Does not apply
Does not apply
Does not apply
Yes
1,024
Yes
No
No
No
OSI X.25
352
352
Application-dependent
64K
Capacity halved
FEP-352, High speed-384 112
FEP-352, High speed-384 112
Application dependent
28
2.048M bps
64K
High speed section-none
None
FEP section-halved
No
Yes
No
SIS, BSC, SDLC to X.25
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Yes
No
Yes-via Commpro
No
No
ASCII to EBCDIC
LRC and CRC
50 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PAD
PAD
Yes
Yes
Yes
Yes
Yes
Yes
PAD
PAD
Proprietary
18
1024K
Byte or Block
Proprietary
18
To 1024K
Byte or block
Multi-microprocessor
16
Up to 1M
Byte & block
Multi-microprocessor
16
Up to 4M
Byte & block
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Yes
Yes
Yes
DMA and Interrupt
None
None
Diskette (diagnostic)
-
1,024
1,024
256
64K
None
No
Diskette (diagnostic),
console-via Commpro
Yes, via Commpro
Software
Software
Software
Software
IPL method
Additional software supported
Download from host
Comm-pro, UTS/F (Unix)
Downline load from host
Commpro
Local & remote IPL
Utilities
Local & remote IPL
Utilities
User programmability
Yes
Yes
Yes/restricted
Yes/restricted
Software separately priced
Yes
Yes
Communications operating software:
Operating system implemented in
Approx. proportion of currently installed
systems supplied as turnkey systems
Yes
Yes
Does not apply
Does not apply
All
100 percent
52,600
375
2,385 (2-yr. lease)
67,000+
475+
3,000+ (2-yr. lease)
25,000
Contact vendor
Contact vendor
75,000
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
350,000+
800+
16,000+ (2-yr. lease)
375,000+
900+
17,600+ (2-yr. lease)
100,000+
Contact vendor
Contact vendor
1,000,000
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
April 1983
800
Amdahl
No
1986
6
Amdahl
Inform. not available
1985
20
Amnet
Inform. not available
1985
10+
Amnet
Remote load via comm.
line; operates with IBM
3705 and 3705/Commpro
software, with up to
2.4 times the 3705
throughput capacity.
Remte load via comm Ine
basic. same as 4705E;
can support up to 4
high-speed links at up
to 2.048M bps ea., high
speed links can multiplex data from IBM host
w/ ext. data/dig. voice
opt. satellite buffing.
Dynamic packet routing
Dist. Net. Mgmt. Autocall.
Redundant hardware,
Dist. Net. Mgmt. Autocall, Dynamic routing.
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1986
© 1986 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-114
Processors
All About Communications Processors
Burroughs
CP3680/
CP3680-01
Amnet
N6000/XTS
SUPPLIER AND MODEL
Burroughs
CP9558-1
Burroughs
CP9585
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors
Burroughs B2000, B3ooo, All Burroughs; IBM
All Burroughs; IBM
B4000 Series
S/370, 30XX, 43XX, and S/370, 30XX, 43XX, and
compatibles
compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does not apply
Does not apply
Does not apply
Yes
512
Yes
No
No
No
OSI X.25
Yes
4
4
No
Yes
4
No
Yes
Yes
Yes
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-
No
-Yes
Yes
15
15
No
Yes
12
Yes
Yes
Yes
Yes
BNA,SNA
-
47
-
.
Yes
Yes
Yes
Yes
BNA, SNA, X.25
512
512
128
64K
None
288 Bsync, 72 sync
40
40
19.2K
Capacity halved
Yes
Yes
Yes
Yes
Yes
Yes
PAD
PAD
-
-
-
-
-
-
CP9558P
16; multiprocessors
1.2M
Byte
-
DMA and Interrupt
DMA
DMA
DMA
DMA
DMA
Yes
Yes
Multi-microprocessor
16
Up to 2M
Byte and block
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Console, printer, disk
Yes
Software
-
12
19.2K
None
ASCII to EBCDIC
No
Yes
56K
None
-
-
ASCII to EBCIC
Yes
No
Yes
CP 9585
16
Byte
-
-
-
Combination software
and firmware
Software and firmware
Internal selfload
-
Mag. tape, floppy and
hard disk
Yes
Mag. tape, floppy and
hard disk
Yes
IPL method
Additional software supported
Local and remote IPL
Utilities
Combination software
and firmware
Download from host
NDL, DCS
User programmability
Yes, on restricted
basis
Yes
Yes, via user selected
parameters
All
Yes
Yes
Yes
-
75 percent
-
-
64,050 (3680)
535
2,415
(3-yr. lease)
15,000
210
1,051
40,739
217
1,560 (3-yr. lease)
124,950 (3680 + -01)
1,010
2,310 (3-yr. lease)
29,401
200
1,033 (3-yr. lease)
81,635
632
3,494 (3-yr. lease)
Yes
October 1980
1,000
Burroughs
Yes
1985
200
Burroughs
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Does not apply
45,000
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
500,000
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Inform. not available
January 1983
12
Amnet
-
Dynamic routing Distributed Net Management Autocall.
Redundant system.
COMMENTS
January 1978
300
Burroughs
-
@ 1986 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPFIODUCTION PAOHIBIT&D
Internal self load
-
APRIL 1886
C13-010-115
Processors
All About Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Cableshare
LSI-X.25
Front-End Processor
Cableshare CSI
Data Concentrator
Cableshare
LSI-X.25 Host
Port Concentrator
Cableshare
LSI-X.25 Intelligent
Concentrator
All computers using
ASCII serial communication ports
DEC PDP- 1 1 and V AX
All hosts supporting
async communications
All async terminals
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Ves
16
16
No
Ves
16
Ves
No
No
Ves
X.25
Ves
1
1
No
No
1
Ves
No
No
No
X.25,OSI
Ves
32 async channels
32
No
Ves
32
Ves
No
No
Ves
X.25,OSI
Ves
32 async channels
32
No
Ves
32
Ves
No
No
Ves
X.25, OSI
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to lBOO bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
16
16
16
56K
None
127
127
127
19.2K
Halved
32
32
32
19.2K
Halved
32
32
32
19.2K
Halved
Ves
Ves
No
Async to X.25
None
X.25 procedures
Ves
Ves
Ves
No
No
Async/X.25
1
Inform. not available
No
No
Ves
No
No
Async/X.25
Baudot/ ASCII
Inform. not available
Ves, 110-9600 bps
Ves
Ves
No
No
Async/X.25
Baudot/ ASCII
Intel BOBB
16
192K
Block
LSI-l 1/2 or PDP-ll/23
16
64K
Block
LSI-ll/2 or PDP-ll/23
16
64K
Infor. not available
LSI-ll/2 or PDP-l1/23
16
64K
Inform. not available
DMA
None
None
Console
DMA
None
None
FEP console
Inform. not available
Inform. not available
Inform. not available
Console
Inform. not available
Inform. not available
Inform. not available
Console
Ves
Ves
Ves
Ves
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-Ves,
110-9600 bps
Ves
Software and firmware
Software
Software
Software
IPL method
Additional software supported
Intemal self load
None
Download from host
None
Internal self load
None
Internal self load
None
User programmability
Ves. via user selected
parameters
None
No
No
No
Inform. not available
Inform. not available
Inform. not available
All
All
All
All
3,000
None
Not available
13,450
100
None
Contact vendor
70
None
Contact vendor
70
None
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
5,600
None
Not available
16,450
125
Contact vendor
100
Contact vendor
100
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
June 1983
No
Cableshare
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1986
-
-
-
November 1978
75
Digital Equipment Corp.
-
March 1980
25
Digital Equipment Corp.
DTE or DCE support;
supports up to 5 X.25
network links with DTE
or DCE configuration.
DTE or DCE support;
supports up to 5 X.25
network links with DTE
or DCE configuration.
DTE or DCE support;
supports up to 5 X.25
network links with DTE
or DCE configuration.
@ 1986 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08076 USA
REPRODUCTION PROHIBITED
March 1980
125
Digital Equipment Corp.
C13-010-116
Processors
All About Communications Processors
Century Analysis
OSI
(Office Systems
Interface)
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal~initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
DEC PDP Series, NCR
Century & Criterion
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Sperry 1100 Series
Sperry 1100 Series
Yes
2
2
No
Yes
Unlimited
Yes
No
No
Yes
X.25
Yes
8
8
No
Yes
Unlimited
Yes
No
No
Yes
X.25
24
24
24
19.2K
None
Over 1000
300
150
64K
None
24
24
24
64K
None
Over 1,000
500
230
64K
None
Yes
Yes
Yes
Planned
Planned
Yes
No
No
Yes
Yes
Yes
Async/uniscope, 3270/as
ASCII/EBCDIC/XS3
LRC, BCC, CRC
Yes, 110-19.2K bps
Site option
Yes
Yes
Yes
Async to uniscope
ASCII/EBCDIC/XS3
LRC, BCC, CRC
Yes, 110-19.2K bps
Site option
Yes
Yes
Yes
Async/unisc.; 3270/asyn
ASCII/EBCDIC/XS3
LRC, BCC, CRC
Yes, 110-19.2K bps
CA-l08/116/124
16
1M
Block
Perkin Elmer 3205
32
1M (stnd.), up to 4M
Byte
Perkin Elmer 3205
32
1M stand., up to 4M
Byte
Perkin Elmer 3210
32
0.5M stand. (up to 4M)
Byte
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console, diskette,
patch panel
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console, diskette,
patch panel
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console, diskette,
patch panel
Yes
Software and firmware
Combination of software
and firmware
Host/ diskette/ self-load
Dev., communications
Combination of hardware
and software
Host/diskette/self-Ioad
Dev., communications
Yes, user-selected
parameters
X.25, X780, uniscope
terminal
Yes, user selected
parameters
X.25, X780, uniscope
terminal emulation
Yes, user selected
parameters
X.25, X780, uniscope
terminal emulation
All
All
All
6,500
Software 25; h/w 150
50,000
600
Contact vendor
35,000
300
Contact vendor
85,000
750
Contact vendor
Interrupt
Interrupt
Interrupt
FEP Console
Yes
Via user-selected
parameters
No
Software separately priced
Chi Communications
Processor
CCP/3210
Yes
8
8
No
Yes
Unlimited
Yes
No
No
Yes
X.25
-
User programmability
Sperry 1100 Series
Chi Communications
Processor
CCP/3205P
Yes
None
Multiple
No
Yes
Multiple
Yes
Yes
Yes
Yes
Yes
Combination of software
and firmware
Download from host
IPL method
Additional software supported
Chi Communications
Processor
CCP/3205
Host/diskette/self-Ioad
Development, communications
All
-
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
10,950
Software 25; h/w 150
-
250,000-500,000
Contact vendor
Contact vendor
50,000
Contact vendor
Contact vendor
500,000+
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
December 1985
798
CAl
No
1977
85
Chi Corporation
No
1985
3
Chi Corporation
No
1983
4
Chi Corporatation
CAl implementation uses
Motorola 68000, flow
control, load leveling,
raw line class selection, error correction,
terminal key-ahead
buffering.
Standard version
communications processor; dynamic routing
two async screen editors; automatic terminal protocol detection;
redundancy; multiple
loc/rem. hosts; UTS
sim.; UTS on X.25 netwk
Preconfigured, entrylevel comm. processor;
dynamic routing; two
async screen editors;
auto. term. protocol
detection; redundancy;
mult. local/remote
hosts; UTS simulation;
UTS simI. on X.25 netwk
High-speed version,
fully expandable; dynamic routing; 2 async
screen editors; auto.
terminal protocol detection; redundancy;
mult. loc/remote hosts;
UTS simulation; UTS
on X.25 networks.
COMMENTS
© 1986 OATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
/
C13-010-117
Processors
All About Communications Processors
Computer
Communications
CC-6F
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Computer
Communications
CC-S
Computer
Communications
CC-SO/S5
Computer
Communications
CCI-S400 V 2.0
IBM S/370, 30XX, 43XX, IBM S/370, 30XX, 43XX, IBM S/370, 30XX, 43XX, IBM S/370, 30XX, 43XX,
and compatibles
and compatibles
and comptatibles
and compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Yes
2
2
370X/37X5 EP
No
Remote line concentrator
Maximum no. of hosts served by one concentrator Does not apply
No
Host-independent network processor
No
Store-and-forward message switching processor
No
Distributed processing node
Yes
Terminal controller
No
Network architecture compliance
Yes
4
4
370X/37X5 EP
No
Does not apply
No
No
No
Yes
No
Yes
7
7
370X/37X5 EP
No
Does not apply
Yes
Yes
No
Yes
No
Yes
4
4
CTCA
No
Does not apply
No
No
No
No
32
32
4
56K
None
240
120
32
230.4K
None
1232
120
120
230.4K
None
-
Yes
Yes
Yes
No
Yes
Parity, LRC, and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
No
No
Yes
No
No
Native HDLC
No
NO
CCI 601
16
64K
Byte
CCI 801
16
64K
Byte
CC18001/8501
16
256K
Byte
Mult. 8809,8089, 68000
8
512K-1M
Byte, block, selector
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP CRT console, diskette, printer
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP CRT console,
diskette, printer
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Disk (40-200MB), mag
tape, FEP CRT, printer
Yes
-
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1BOO bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity,_ bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-
DMA
DMA
-
Diskette, supervisory
console, display unit
Yes
Software
Software
Software
Software
IPL method
Additional software supported
From host/diskette
Value added options,
assembler, utilities,
diagnostics
From host/diskette
Value added options
assembler loader,
utilities, diagnostics
Host, manual diskette
User programmability
Yes, via user parameters and programs
Value added options
Yes, via user parameters and programs
Value added options
From host/disk
Value added options,
custom software,
assembler, loader,
utilities
Yes, via user parameters and programs
Options and custom sys.
All
90 percent
17,900
150
630
39,840
296
1,224 (3-yr.); 1,600
(rental)
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1986
Yes
None
95 percent
Contact vendor
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
-
181,200
1,593
5,858 (3-yr.); 7,635
(rental)
Yes
Yes
November 1981
1976
270
30
Computer Communications Computer Communications
Auto-poll, autobaud
rate detect, autodial,
single lOP support, off
line utility, flow control, async line interface support; host load
diskless system.
Auto poll, autobaud
rate detect, speed and
code conversion, auto
dump, autoload, multi
host support, terminal
initiated line sel.,
etc.
All
68,000/115,640
246/426
1,932 (3-yr. lease)
55,965
369
1,552 (3-yr. lease)
674,050
3,344
17,523 (3-yr. lease)
99,908
699
2,990 (3-yr. lease)
Yes
1975
432
Computer Communications
Yes
January 1986
8
Computer Communications
Used mainly for custom
store-and-forward
message switches,
electronic mail, and
high-speed transaction
processing systems
(e.g., airline reservations).
T 1 processor for bulk
file data transfer;
simultaneously attached
to pre-SNA/SNA hosts;
transparent passthrough
no host softwr. changes
to OS; local/remote
console for system mono
diag., contig.
© 1986 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-11S
Processors
All About Communications Processors
Control Data
2551-3
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Control Data
2551-4
Digital
Communications
Associates
System 355
Digital
Communications
Associates
System 335
CDC Cyber 170, CDC Cy- CDC Cyber 170, CDC
Cyber 180, Cyber 6000
ber 180, Cyber 70,
Cyber 6000 Series
Series, Cyber 70
Most vendors
Most vendors
Yes
2
1
No
Yes
8
No
No
No
No
Yes
Yes
2
1
No
Yes
8
No
No
No
No
Yes
DEC-10
66
2855+
Yes
Yes
124
Yes
No
Yes
Yes
INA/X.25/SNA
No
Does not apply
276
Yes
Yes
20
Yes
No
Yes
Yes
INA/X.25./SNA
32
32
4 @ 19.2K; 2 @ 56K
56K
None
254
254
4 @ 19.2K; 2 @ 56K
56K
None
44 trunks, 120 lines
44 trunks, 120 lines
22 trunks, 110 lines
12K
None
4 trunks, 40 lines
4 trunks, 40 lines
2 trunks, 76 lines
72K
None
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
Async/X.25
No
Yes-CRC
110 to 9600 bps
Yes
Yes
Yes
Yes
Async to X.25
No
Yes-CRC
110 to 9600 bps
Yes
CDC 2551-3
16
256K
Byte and control
CDC 2551-4
16
256K
Byte and control
Z80A/B, M68K
8
2136K
Byte
Z80A/B, M68K
8
1280K
Byte
DMA and Interrupt
None
DMA and Interrupt
Console, cassette
DMA and Interrupt
None
DMA and Interrupt
Console, cassette
Yes
Yes
DMA and Interrupt
Interrupt
Interrupt
Dual floppy disk; disk;
diagnostics built-in
Yes
DMA and Interrupt
Interrupt
Interrupt
Dual floppy disk; disk;
diagnos. built-in
Yes
Combination of software
and firmware
Download from host
None
Software
Software
IPL method
Additional software supported
Combination of firmware
and software
Download from host
None
Internal self-load
Configuration generator
Downline/int. self-load
Configuration generator
User programmability
Yes
Yes
Software separately priced
All
All
Yes; via user selected
parameters/programs
All
User-selected parameters; programs
All
98 percent
98 percent
5 percent
5 percent
36,955
433
1,067 (3-yr. lease)
48,648
483
1,403 (3-yr. lease)
12,000 and up
Contact vendor
Contact vendor
6,795
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
68,570
751
2,048 (3-yr. lease)
157,478
483
5,093 (3-yr. lease)
144,145
Contact vendor
Contact vendor
27,925
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
January 1983
Inform. not available
Control Data Corp.
No
January 1983
Inform. not available
Control Data Corp.
Contact vendor
October 1980
Inform. not available
DCA, third party
Contact vendor
1983
Inform. not available
DCA, third party
Predecessor was 2550
products, first shipped
in 1976.
Predecessor was 2550
product, first shipped
in 1976.
Supports host selection
port contention, full
line and modem control
facilities; handles up
to 44 high-speed trunk
lines; symmetric multiproc.
Supports host selection, port contention,
full line and modem
control facilities.
Functions with 1 to 4
trunks.
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
© 1986 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-_._.
_.-
------------~
APRIL 1986
C13-010-119
Processors
All About Communications Processors
SUPPLIER AND MODEL
Digital
Communications
Associates
System 375
Digital
Communications
Associates
System 330
Digital
Communications
Associates
System 332
Digital
Communications
Associates
System 334 Bisync
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors
Most vendors
Most vendors
IBM and compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
DEC-l0
87
7301
Yes
Yes
124
Yes
No
Yes
Yes
INA/X.25/SNA
Yes
Does not apply
141
No
Yes
27
Yes
No
Yes
Yes
INA, X.25
Yes
Does not apply
268
No
Yes
25
Yes
No
Yes
Yes
INA, X.25
Yes
Does not apply
500
3274, 37X5 FEP
Yes
12
Yes
No
Yes
Does not apply
INA, 3270 BSC, X.25
114 trunks, 120 lines
114 trunks, 120 lines
57 trunks, 110 lines
12K bps
None
28
28
Does not apply
19.2K
None
26
26
Does not apply
72K
None
14
14
8
12K
None
Yes
Yes
Yes
Async/X.25
No
Yes-CRC
110 - 9600 bps
Yes
Yes
Yes
Yes
Async to X.25
No
CRC
110-9600 bps
Yes
Yes
Yes
Yes
Async to X.25
No
CRC
110-9600 bps
Yes
Yes
Yes
Yes
3270 to X.25
No
CRC
Does not apply
No
Z80A/8, M68K
8
11M
Byte
Z80B
8
192K
Byte
Z80B/M68K
8
640K
Byte
Z80B/M68K
8
1024K
Block
DMA and Interrupt
Interrupt
Interrupt
Dual call. tape unit;
disk diag. built-in
Yes
DMA and Interrupt
Interrupt
Interrupt
Diagnostics built-in,
console, diskette
Yes
DMA and Interrupt
Interrupt
Interrupt
Diagnostics built-in,
console, diskette
Yes
DMA and Interrupt
Interrupt
Interrupt
Diagnostics built-in,
console, diskette
Yes
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software
Software
Software
Software
IPL method
Additional software supported
Internal self-load
Configuration generator
Internal self-load
Does not apply
Internal self-load
Does not apply
Internal self-load
Does not apply
User programmability
Yes, via user-selected
parameter programs
All
Yes, via user selected
parameters
All
Yes, via user selected
parameters
All
Yes, via user selected
parameters
All
25 percent
Does not apply-new
product
Does not apply-new
product
Does not apply-new
product
16,995
Contact vendor
Contact vendor
See comments
Contact vendor
Contact vendor
See comments
Contact vendor
Contact vendor
See comments
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
234,165
Contact vendor
Contact vendor
-
-
-
-
-
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Contact vendor
December 1984
Inform. not available
DCA, third party
No
-
No
-
-
DCA
DCA
Diagnostics plus error
checking; X.25 gateway
interface; advanced
features software; full
transparency, data concentration; host select
ion, and camp-on network management.
$6,495-10 ports;
$8,495-26 ports;
Drop-and-insert; host
selection, port contention; full line and
modem control facilities; alternate
routing.
$9,995-12 ports;
$10,995-24 ports;
Drop-and-insert; host
selection, port contention; full line and
modem control facilities; alternate
routing.
$14,995-4 ports;
$17,495-8 ports;
$19,995-12 ports;
User-initiated terminal
session switching; port
contention; alternate
routing;
drop-and-insert.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1986
DCA
© 1986 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
No
C13-010-120
Processors
All About Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supponed simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supponed (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supponed between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supponed
Suppon for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supponed
User programmability
Software separately priced
Approx. proponion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Honeywell
Information Systems
Datsnet 8*
ICOT Corporation
254
Infotron
990NP
Network Processor
ICOT Corporation
257
Honeywell DPS 88, DPS
8, and DPS7
ICOT 254
ICOT 257
-
Yes
4
4
Ves
Ves
4
Ves
No
Ves
Ves
Honeywell DSA (ISO)
Ves
No
8
3270 BSC, SNA/SDLC
Ves
8
Ves
No
Ves
Ves
SNA, BSC, NCR
Ves
No
28
3270 BSC, SNA/SDLC
Ves
28
Ves
No
Ves
Ves
SNA, BSC, NCR
No
None
Over 10 hosts
3270 BSC
Ves
Over 10 hosts
Ves
No
Ves
No
Proprietary
-
128
Load-dependent
Load-dependent
56K
Load-dependent
Ves
Ves (by host program)
Ves
No
No
Ves
Ves; 110,300, 1200 bps
Ves; optional, variable
~6tanet 8 (Honeywell)
8 (all sync)
-28 (all sync)
28
19.2K bps
28
640
From 320 to 124
Does not apply
56K bps
None
Ves
No
Ves
Ves
Ves
Ves
No
No
Ves
No
Ves
Ves
Ves
Ves
No
No
Ves
Ves (async)
Ves
No
No
Ves
Ves (Up to 9600 bps)
Ves
-
Multi-Intel 8088
128K bytes
128K bytes
Byte
Intel 8088
128K bytes
128K bytes
Byte
Async bus
Async bus
Async bus
Console, diskette
Interrupt
Mail box
Interrupt
Mail box
Host console
0
DMA and Interrupt
Does not apply
Does not apply
Console/diskette
Ves
Ves
Ves
Ves
Combination of software
and firmware
Host, local, or VIP
Additional on host for
administrative and
control
Firmware
Firmware
Download from host
No
Download from host
No
Combination firmware &
software
EEPROM
Does not apply
Ves, via user selected
parameters
All
Ves, via user selected
parameters
No
Ves, via user selected
parameters
No
Some
100 percent
100 parameters
25%
7,200 and up
20,000
Contact vendor
Contact vendor
1,536K
B~e
-
Host console
-
6502/8086/80186
-
-Does not apply
Ves, via console
Software is customer
installable
42,565
259
1,432 (5-yr. lease)
-
-
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
210,465
1,138
7,615 (5-yr. lease)
-
15,000
--
30,000
100,000
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Ves
1981
Over 1000
Honeywell
No
1981
No
1981
No
1984
2,000
Infotron
·1985 information.
IBM 2780/3780 BSC
emulation.
COMMENTS
5200 and up
-
ICOT, third pany w/NCR
-
ICOT. third pany w /
NCR
2780/3780 BSC emulatior The 990NP provides adaptive routing; comprehensive network management features; bisync emulation (remote
polling); X.25 gateway
suppon; Async/BSC/BOP/
SDLC suppon.
© 1986 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
/'
C13-010-121
Processors
All About Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
IBM
3705-80
Models M8l
through M83
IBM
3705-11
Models El through L4*
IBM
3725
IBM S/370, 30XX, and
43XX; S/360 in 270X
emulation mode only
IBM S/370, 30XX, and
43XX; S/370 in 270X
emulation mode only
IBM S/370 (except models 115 and 125), 303X,
308X,43XX
IBM S/360, S/370,
30XX, 43XX, and
compatibles
Yes
4
4
270X/370X
Yes
1
No
No
No
No
SNA
Yes
2
2
270X/370X
No
Does not apply
No
No
No
No
SNA
Yes
8
8
270X and 3705 with EP
Yes
8
No
No
No
No
SNA
Yes
1
1
270X, 370X, EP
No
Does not apply
No
No
No
No
Does not apply
352
352
32
230.4K
Capacity halved
16
16
Inform. not available
57.6K
Capacity halved
256 with 3726 expansion 4
256 with 3726 expansion 4
128 with 3726 expansion 3
230.4K bps
56K
None
None
Yes
No
No
Yes
Yes
LRC and CRC
Yes, via optional soft.
No
No
No
No
Yes
Yes
LRC and CRC
Yes; via optional soft.
No
Yes
No
Yes
Yes
Yes
LRC and CRC
Yes, via opt. software
No
No
No
No
No
Yes
Yes
Optional-300, 1200
Yes
Proprietary
18
512K
Block
Proprietary
18
256K
Block
Propriatary
18
512K-2M
Block
Motorola 6800
8
40K
Byte
DMA
DMA
DMA
None
DMA
DMA
DMA
None
DMA
DMA
DMA
FEP console
Interrupt
None
None
FEP console
No
No
Yes, up to 150 meters
(492 feet)
Yes
Software
Software
Software
Firmware
Download from host
NCCF, NPDA
Download from host
NCCF, NPDA
Internal self load
NCCF, NPDA, ACF/NCPPEP, EP/3725
Internal self-load
Problem determination
aids
User-selected
parameters
Utilities only
User programmability
Yes
Yes
Yes
Software separately priced
Yes
Yes
Yes
None
None
None
38,230 (El)
147
1,635 (2-yr. lease)
36,600 (M81)
219
1,465 (2-yr. lease);
1,72 1 (rental)
Maximum practical confi9uration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
107,040 (L4)
447
6,290 (2-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Yes
August 1975
50,000
IBM
52,600 (M83)
239
2,265 (2-yr. lease);
2,661 (rental
Yes
August 1981
Inform. not available
IBM
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1986
Lemcom Systems
CMC-4
None
'As of 3/3/86, IBM is
withdrawing from marketing all models of
the 3705-11. Model
conversions, upgrades,
special features,
existing RPQs, etc.
will continue to be
accepted until 7/23/86.
-
-
32,000
1,485 (rental)
14,000
Contact vendor
Contact vendor
75,000
213
3,485 (rental)
20,000
Contact vendor
Contact vendor
No
1983
Inform. not available
IBM
Contact vendor
March 1977
335
Various
HONE Configurator CF3725 should be consuited for actual
number of operable
lines, depending on
line speeds, protocols,
3 other variable
factors.
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPQs available
for a fee.
© 1986 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-122
Processors
All About Communications Processors
lemCCim Systems
CMC-8
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Lemcom Systems
Distributed Network
!>rocessor Series
Lemcom Systems
CMC-32
MIA-COM
9708
IBM 5/360, 5/370,
30XX, 43XX, and compatibles
IBM 5/360, 5/370,
30XX, 43XX, and compatibles
Yes
1
1
210X, 370X,EP
No
Does not apply
No
No
No
No
Does not apply
Yes
1
1
270X, 370X, EP
NO
Does not apply
No
No
No
No
Does not apply
64
270X, 370X, EP
Yes
64
Yes
Optional
Yes
Optional
DMMA
-Yes
8
8
6
56K
None
32
32
24
56K
None
6500
1500
250
57.6K
Capacity halved
8
8
8
19.2K
None
No
No
No
No
Yes
Ves
Optional-3oo, 1200
Ves
No
No
No
No
Ves
Ves
Optional-3oo, 1200
Ves
Yes
Yes
RPQ
Yes
Ves
Yes
110 to 19.2K bps
Yes
Yes
Yes
Yes
No
No
Ves
No
No
Motorola 6800
8
80K
Byte
Motorola 6800
8
320K
Byte
Motorola 6809
8
15M
Byte and block
Intel 186
16
640K
Interrupt
None
None
FEP console
Interrupt
None
NOne
FEP console
DMA and Interrupt
Ves
Ves
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console and bubble
memory
Ves
Firmware
Firmware
Software
Firmware
IPL method
Additional software supported
Internal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
Self-/manual-/ down-load
Channel prog. simulator
& prob. determin. aids
Downline load
Remote diagnostics
User pr09rammability
Ves, via user-selected
parameters
Utilities only
Ves, via user-selected
pararheters
Utilities only
Ves, via user-selected
parameters
All
No
Part of full network
None
None
25 percent
All
16,000
Contact vendor
Contact vendor
20,000
Contact vendor
Contact vendor
25,00
Contact vendor
Contact vendor
Under 10,000
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease / rental, $
30,000
Contact vendor
Contact vendor
60,000
Contact vendor
Contact vendor
500,000
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Contact vendor
November 1980
65
Various
Contact vendor
March 1979
135
Various
Contact vendor
1981
415
Various
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPQs available
for a fee.
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts.
Distributed MPU FEP; up
to .256 MPUs can be programmed to perform various comm. processing
functions; front-end
polling, dynamic
application selection;
and multi-console
support available.
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and dia9nostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, Including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
IBM 5/360, 5/370,
30XX, 43XX, and
compatibles
Yes
64
© 1986 OAT APRO RESEARCH CORPORATION. DELRAN, NJ 08076 USA
REPRODUCTION PROHIBITED .
Most vendors via X.25
No
-
7
Yes
No
Yes
No
X.25
-
-Disk, tape, console
Ves
-
Contact vendor
-
1986
-
MIA-COM
Part of M/A-COM's
Integrated Packet
Network; full
network management
capability.
APRIL 1986
/
C13-010-123
Processors
All About Communications Processors
MIA-COM
9724
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURESIFUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
l.evel of data unit transferred across 1/0 channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Most vendors via X.25
MIA-COM DCC
CP9000 Series II
Micom
MieroSOO/X.25
Mieon'l
Micro 860
Most
Most vendors
-
Yes
73
Yes
No
Yes
No
X.25
Most vendors via
communications
interface
N
No
Does not apply
Does not apply
Does not apply
Yes
No limit
Yes
No
Yes
Yes
X.25
No
Does not apply
Does not apply
Does not apply
Yes
24
Yes
No
No
No
X.25
No
Does not apply
Does not apply
No
Yes
80 channels
Yes
No
No
No
Micro 8001 proprietary
24
24
24
64K
None
640
640
640
64K bps
None
24
24
Inform. not available
19.2K bps
None
8
8
8
19.2K bps
None
Yes
Yes
Yes
No
No
Yes
No
No
Yes
Yes
Yes
Yes
No
Yes
No
No
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
110 to 9600 bps
Yes
Intel 286 and 186
16
2M
Intel 186 S. 286
16
Over 50MB
Byte, block
Z80A;Z80B
8
64K
Byte
Z80B
8
64K bytes
Byte
DMA and Interrupt
DMA and Interrupt
DMA
Interrupt
Interrupt
None
Diagnostics built in
No
-
-
-
--
-
Interrupt
None
None
Yes
Yes
Async terminals
Yes
Yes
Disk, tape, console
Disk, tape, console
Firmware
Firmware
Firmware
Firmware
IPL method
Additional software supported
Downline load
Remote diagnostics
DiJwnline load
Remote diagnostics
Int. selfldownline load
None
Internal self-load
Does not apply
User programmability
Yes
Software separately priced
Part of full network
Yes, via !Jser selected
paramaters S. programs
All
User-selected parameters
Options only
Yes, user selected
parameters
None
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for bailie operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
(APRIL 1986
All
All
Under 20,000
-
-
Under 30,000
2,050
Contact vendor
Contact vendor
2,550
Does not apply
Does not apply
Contact vendor
6,250
Contact vendor
Contact vendor
3,250
Does not apply
Does not apply
No
1982
2,000
Independent distributors.
Does not apply
1983
-
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
All
All
1986
-
1984
-
Part of M/A-COM's
Integrated Packet
Network; full network
management capability.
Part of M/A-COM's
Integrated Packet
Network;' full 'management capability.
M/A-COM
M/A-COM
© 1986 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-Independent, distributors
Interconnects 4 or 8
Micro 800/2 composites;
supports channel speed
conversion.
C13-010-124
Processors
AU About Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfi9.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-
NCR Comten
5620
NCR Comten 3690
Models A8-E8
NCR Comten
3690
Model T8
IBM 5/370, 30XX, 308X, IBM 360/370, 303X,
IBM 5/370, 30XX, 308X, IBM 5/370, 30XX, 308X,
43XX, 8. compatibles;
308X, 43XX, and compat- 43XX, and compatibles;
43XX, and compatibles;
ibles, NCR 8500, 8600
NCR 8500, 8600
NCR 8500, 8600
NCR 8500, 8600
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
No
No
No
No
SNA/CNA, 051
Yes
2
2
270X, 370X, ACF /NCP
Yes
Unlimited
No
No
No
No
SNA/CNA, 051
Yes
8
8
270X/370X, ACF/NCP
Yes
Unlimited
Yes
Yes
No
No
SNA/CNA, 051
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
Yes
No
No
No
SNA/CNA, 051
128
128
Up to 64
230.4K
More than 9.6K-halved;
less than 9.6K-none
32
32
Up to 16
64K
More than 9.6K-halved;
less than 9.6K-none
512
512
Up to 256
256K
More than 9.6K-halved,
less than 9.6K-none
128
128
Up to 64
256K
More than 9.6K-halved;
less than 9.6K-none
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Proprietary
32
1M
Byte or block
Proprietary
32
4M
Byte or block
Proprietary
32
4M
Byte, block, or file
Proprietary
32
1M
Byte, block
Interrupt
DMA
DMA
Diskette, hard disk,
console
Yes
Interrupt
DMA
DMA
Hard disk, diskette,
console
Yes
Interrupt
DMA
DMA
Diskette, hard disk,
console
Yes
Interrupt
DMA
DMA
Diskette, hard disk,
console
Yes
Combination of software
and firmware
See comments
NDP, CLSS1, Codel 59,
Comten networking
software
Combination of software
and firmware
See comments
NDP, CLSS1, Codel,
Comten networking software
Software
Software
IPL method
Additional software supported
See comments
NDP, DLSS1, Code 59,
Comten Networking software
See comments
NDP, CLSS1. Codel 59,
Comten Networking software
User programmability
Yes, via user selected
parameters 8. user prog.
All
Yes
All
Yes, via user selected
parameters 8. user prog.
All
Yes, via user created
programs
All
Inform. not available
Inform. not available
Inform. not available
Inform. not available
41,000
261
1,250 (2-yr. lease)
22,000
Contact vendor
Contact vendor
105,000
415
3,600 (2-yr. lease)
66,000
366
2,257 (2-yr. lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
125,000
Contact vendor
Contact vendor
95,000
Contact vendor
Contact vendor
300,000
1,700
8,500 (2-yr. lease)
108,500
518
2,935 (2-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
March 1975
1,800
NCR Comten
Contact vendor
1985
Inform. not available
NCR Comten
No
June 1978
Inform. not available
NCR Comten
No
January 1980
Inform. not available
NCR Comten
Manual load from diskette and download from
host; reload from hard
disk, RCP load via
trunk or hard disk.
Handles applications
switching, routing,
polling, auto. dialing,
error recov., 8. multiplexing for up to 32
lines; runs all Comtens
netwrk. prod.; reload
from hard disk, RCP
load via trunk/hrd disk
Manual load from diskette and download from
host; RCP load via hard
disk or comm line; reload via hard disk.
Manual load from diskette and downline load
from host; RCP load via
hard disk or comm. line
reload via hard disk.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
,"".>;\1.
NCR Comten
3650
@ 1986 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
\
/
C13·010·125
Processors
All About Communications Processors
NCR Comten
721-300
SUPPLIER AND MODEL
NTX Communications
Corporation
NTX 3S0D--Model 2
NTX Communications
Corporation
NTX 3S00--Model 1
Paradyne
PiX/Pixnet
COMPUTER SVSTEMS INTERFACED
Manufacturers and Models
NCR JRX, VRX Systems
IBM and piug-compatible mainframes
IBM and plug-compatible mainframes
IBM S/370, 30XX,
43XX, and compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Ves
2
2
No
Ves
Unlimited
Ves
No
No
No
CNA
Ves
4
2
CTCA
No
Does not apply
No
No
No
No
SNA
Ves
4
2
270X, 37X5 EP
No
Does not apply
No
No
No
No
BSC
Ves
1
Multiple
Does not apply
Ves
Multiple
Ves
No
Ves
Ves
None
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
99
52-99
10 at 56K
56K
None
8
8
8
6.312M
Halved
8
8
8
6.312M
Halved
None
Application-dependent
3 full-duplex
56K bps
None
Ves
No
No
No
No
Ves
No
Ves
No
Does not apply
No
No
No
CRC
No
No
No
Does not apply
No
No
No
CRC
No
No
Ves
Ves
Ves
Async/3270; PC/3270
ASCII/EBCDIC
Ves
Ves
No
Proprietary
16
1M
8yte and block
Proprietary
Proprietary
9.6K
Block
Proprietary
Proprietary
9.6K
Block; byte
Proprietary
16
128K
Byte
DMA
Interrupt
None
None
Internal diag. processor
Ves
Interrupt
None
None
Internal diag. processor
Ves
DMA and Interrupt
None
DMA and Interrupt
Mag. tape; console
Host-based software
Inform. not available
None
Combination software,
firmware, hardware
Intern. self-load, man.
Utilities
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SVSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-
DMA
Cassette
No
Software
Ves
IPL method
Additional software supported
Load from cassette
No
Proprietary host-based
software
Inform. not available
None
User programmability
No
Configuration macros
Access method macros
Self-configuring
Software separately priced
All
All
None
None
Inform. not available
Inform. not available
Inform. not available
All
46,000
370
1,637/yr.
163,340
400
5,709 (l-year lease)
145,730
474
5,754 (l-year lease)
Contact vendor
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
95,000
577
3,500
240,805
628
8,902
233,005
730
Contact vendor
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Ves
1976
Approx. 1,200
NCR Comten
No
1985
Inform. not available
NTX
No
1985
Inform. not available
NTX
No
April 1976
Over 5,500
Paradyne
-
Supports multiple
1.544M bps cross-domain
links over terrestrial
or satellite facllit.
Supported by ACF/VTAM
with NTX Cross Domain
Control Program; full
circuit redundancy.
Supports multiple
1.544M bps links using
IBM BSC; full circuit
redundancy.
Plx/Pixnet permits remote peripherals and
CRTs to access multiple
IBM hosts and applications as locally attac.
devices without remote
TP software and with no
software maintenance.
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance. $
Monthly lease/rental, $
COMMENTS
APRIL 1986
© 1986 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-126
Processors
All About Communications Processors
Peri phonics
Voicepac
Periphonics
VoiceBox
Peri phonics
VoiceStar
40XX
IBM/370, 43XX, 30XX,
and compatibles
Most major vendors
Most major vendors
Most major vendors
Yes
2
Multiple
Does not apply
Yes
Multiple
Yes
No
No
Yes
OSI-modeled
Yes
Yes
7
3
7
3
370X, 3803, 327X, 5250 327X, 370X
Yes
Yes
7
3
Optional
Optional
No
No
Yes
Yes
Yes
Yes
SNA
SNA
Yes
Not available
1
370X, 3803, 327X, 5250
No
Does not apply
Yes
No
Yes
No
SNA
None
Application dependent
16 full-duplex
2.048M bps
None
104
104
Does not apply
9.6K
Minor
32
32
Does not apply
9.6K
Minor
8
8
Does not apply
9600 bps
Minor
Yes
Yes
Yes
Async/3270, PC/3270
ASCII, EBCDIC
CRC
Yes
No
Yes
Yes
Yes
Yes
Yes
All industry standards
Yes
Yes
No
Yes
Yes
Yes
Yes
Industry standard
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Proprietary
16 bit
4M
Block, byte
LSI 11/23; LSI 11/73
16
320K
Byte
LSI 11/23
16
128K
Byte
80286 and LSI 11
16 bit ECC
1M
2 bytes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Diskette, console
Interrupt
DMA and Interrupt
DMA and Interrupt
CRT, printer, floppy
Interrupt
DMA and Interrupt
DMA and Interrupt
CRT, printer, floppy
Ves
Yes
Ves
Interrupt
DMA and Interrupt
DMA and Interrupt
CRT, printer, disk,
floppy
Yes
Combination firmware/
software
Internal
Utilities
Proprietary software
Proprietary software
Unix based
Download or disk load
I/O Gen, Pave, Param,
Utalk
EPROM based
None
Hard disk
Voice dialog utility,
reI. dbms, Pave, Paramo
Utalk, high-level lang.
User programmability
No, vendor supported
Ves
None
Ves, voice dialog and
basic edit functions
All
No
Software separately priced
All
All
75 percent
40 percent
100 percent
Contact vendor
Contact vendor
Contact vendor
25,00
250 min., variable
Variable
20,000
Approx.200
Variable
35,000
Approx.350
Variable
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental. $
Contact vendor
Contact vendor
Contact vendor
300,000
Contact vendor
Variable
50,000
Contact vendor
Variable
60,000
Contact vendor
Variable
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
March 1985
Over 250
Paradyne
No
1981
350
Peri phonics
No
1983
25
Peri phonics
No
1985
Inform. not available
Peri phonics
Pixnet-XL allows remote
peripherals, CRTs, IBM
3800 & Xerox 9700 laser
printers, and other per
-ipherals to access IBM
hosts as locally
attached devices. No
host or TP software is
required.
Handles data and voice
interchangeably via a
single I/O port; can
concentrate, convert
protocol & code, and
serve as a network
node.
A solid state unit that
can concentrate, convert protocol and code,
serve as a remote,
unattended network
node, and provide voice
response.
Low end transaction
processing system with
voice response, handheld terminal, and PC
support.
Paradyne
Pixnet-XL
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILlTV
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
All
© 1986 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
C13-010-127
Processors
All About Communications Processors
SUPPLIER AND MODEL
Periphonics
VoiceStar
42XX
Periphonics
VoiceStar
46XX
Periphonics
VoiceStar
47XX
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major vendors
Most major vendors
Most major vendors
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
Yes
Yes
Yes
1
3
7
Not available
1
2
4
7
370X.
3803.
2848.
327X
370X. 3803. 327X. 5250
370X. 3803. 327X. 5250 No
No
Yes
Yes
Yes
Does not apply
4
7
Inform. not available
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Custom
Yes
Yes
Yes
No
No
Yes
Yes
Yes
SNA
DCA
SNA
SNA
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity. if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size. bits
Main memory storage capacity. bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O. back-up. and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
16
16
Does not apply
9600 bps
Sperry
DCP/10A*
Sperry Series 1100.
Series 90
Minor
50
50
Does not apply
9600 bps
Minor
96
96
Does not apply
9600 bps
Minor
6 sync. 24 async
6 sync. 24 async
6 sync. 24 async
64K
None
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Industry standards
Yes
Yes
Yes
Yes
Yes
Inform.
Inform.
Inform.
Yes
Inform.
68000 and LSI 11
16 bit ECC
Up to 2M
2 bytes
Multi 68000. LSI 11
32 bit ECC; 16 bit ECC
Up to 3M
2 or 4MB
Multi 68000 and LSI 11
32 bit ECC; 16 bit ECC
Up to 6M
2 or 4 bytes
Sperry DCPf10
16
512K
Inform. not available
Interrupt
DMA and Interrupt
DMA and Interrupt
CRT. printer. disk.
floppy. tape
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
CRT. printer. disk.
floppy. tape
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
CRT. printer. disk.
floppy. tape
Yes
DMA
DMA
DMA
Inform. not available
Combination software
and firmware
Inform. not available
Inform. not available
not available
not available
not available
not available
Yes
Unix based
Real time. Unix based
Real time. Unix based
IPL method
Additional software supported
Hard disk
Voice dialog utility.
reI. dbms. Pave. Utalk.
Paramo High level lang.
User programmability
Yes
Hard disk
Voice dialog utility.
rei. dbms. Pave. Utalk.
Paramo high level lang.
& netwrk. defin. util.
Yes
Hard disk
Voice dialog utility.
rei. dbms. Pave. Utalk.
Paramo high level lang.
& netwrk. defin. util.
Yes
Software separately priced
All
All
All
All
100 percent
100 percent
100 percent
None
50.000
Approx.5oo
Variable
65.000
Approx.650
Variable
115.000
Approx. 1.150
Variable
20.000
100
450 (5-yr. lease)
Maximum practical configuration:
Purchase price. $
Monthly maintenance. $
Monthly lease/rental. $
80.000
Contact vendor
Variable
200.000
Contact vendor
Variable
400.000
Contact vendor
Variable
40.000
220
990 (5-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1985
Inform. not available
Peri phonics
No
No
1985
Inform. not available
Peri phonics
-
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price. $
Monthly maintenance. $
Monthly lease/rental. $
COMMENTS
(
APRIL 1986
Transaction processing
system with voice
response. hand-held
terminal. and PC
support.
-
70
Periphonics
Transaction processing
system with voice response. hand-held
terminal. PC. and POS
device support.
High capacity and thruput transaction processing system with
voice response. handheld terminal. PC. and
POS device support.
© 1986 DAT APRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Inform. not available
No
1985
Sperry
"1985 information.
DCP /1 OA replaces the
DCPf10.
C13-010-128
Processors
All About Communications Processors
,/
Sperry
DCP/20'
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Sperry
DCP/40'
Telefile Computer
Products Telepac
Telematics
NET 25
Sperry Series 1100,
Series 90
Sperry Series 1100,
Series 90
Standalone or Telefile
T80 Series
Most
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
4
3
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
Yes
16
16
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
Yes
8
8
None
Yes
12
Yes
Yes
Yes
No
X.25
No
Does not apply
Does not apply
No
Yes (packet switch)
4
No
No
No
Yes
None
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
47 sync; 192 async
47
47
64K
None
255 sync; 1023 async
255
140
64K
None
280
280
280
19.2K bps
None
480
480
160
64K
Halved
Yes
Yes
Yes
Yes
Yes
Yes
Yes, 110 to 19.2K bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes, 110 to 19.2K bps
Yes
Yes
Yes
Yes
Async to 3270 BSC/SDLC
ASCII to EBCDIC
Parity, LRC and CRC
50 to 9600 bps
Yes
Yes
Yes
Yes
No
No
Yes
50 bps-19.2K bps
Sperry DCP /20
16
512K
Block
Sperry DCP/40
16
3.5M
Block
M68000
16
64K Bytes MaS RAM
Byte or block
MC68000/Telematics Sl
32
16M
Block
DMA
DMA
DMA
Console, disk, mag.
tape, diskette
Yes
DMA
DMA
DMA
Console, disk, mag.
tape
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console, disk,
diskette, mag tape
Yes
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Yes
Combination. software
and firmware
Host download & disk
File transfer
Combination software
and firmware
Host download & disk
File transfer
Combination of software & firmware
into selfload, dskt.
Program dey. software,
utilities
Software
Yes, via user created
pr09rams
All
Yes, via user created
programs
All
Yes, via user-selected
parameters
Special applications
only
80 percent
Yes
None
10 percent
47,350
245
1,080 (5-yr. lease)
103,600
590
2,340 (5-yr. lease)
17,100
114
570 (3 yrs.)
45,900
275
None
135,000
700
2,800 (5-yr. lease)
480,000
2,500
10,000 (5-yr. lease)
18,810
126
627 (3 yrs.)
220,000
1,320
None
No
September 1979
No
October 1980
40
Telefile
No
February 1984
500+
Telematics
Provo mode for mult.
CCITT X.25 pub. or
priv. packet netwk.;
Sup. all ASCII based
hosts and terminals;
interface to SNA/SDLC
networks.
CCITT X.25 software
support; public or
private networks.
3270 support; multiprocessors (up to 5
CPUs).
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
No
January 1982
-
-
·1985 information.
·1985 information.
Sperry
Sperry
© 1986 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
."
\.
Disk or remote port
Pascal; C
Yes
None
APRIL 1986
/
C13-010-129
Processors
All About Communications Processors
Telematics
Series 500.
1000.2000
SUPPLIER AND MODEL
Tri-Data
Netway 200
Tymnet
Micro-Engine
Tymnet
Mini-Engine
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most
Most major vendors
Most major vendors
Most major vendors
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does not apply
Does not apply
No
Yes
4
No
No
No
Yes
None
No
Does
Does
Does
Yes
4
Yes
No
No
Yes
SNA;
No
Does not apply
Does not apply
Does not apply
Pack. switch-prot.conv.
Configuration dependent
Yes
No
No
Yes
Tymnet proprietary X.25 based
No
Does not apply
Does not apply
Does not apply
Pack. switch-prot.conv.
Configuration dependent
Yes
No
No
Yes
Tymnet proprietary X.25 based
480
480
160
64K
Halved
6
6
6
56K
None
Configuration dependent
Configuration dependent
Configuration dependent
19.2K
None
Configuration dependent
Configuration dependent
Configuration dependent
74K
None
Yes
Yes
Yes
No
No
Yes
50 bps-19.2K bps
-
Yes
Yes
Yes
Yes
ASCII to EBCDIC
Parity; LRC; CRC
No
No
Yes
Yes
No
Yes
ASCII. Baudot. EBCDIC
Check sum w / retrans.
Yes
Yes
Yes
Yes
No
Yes
ASCII. Baudot. EBCDIC
Check sum w / retrans.
Yes
Yes
MC68000/Telematics Sl
32
16M
Block
Zilog Z80
8 bits
256K
Byte
Tymnet/proprietary
32
1M
Byte
Tymnet/proprietary
32
1M
Byte
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Diskette
Interrupt
Does not apply
Does not apply
None
DMA and Interrupt
Does not apply
Does not apply
None
Yes
Yes
Yes
Software
Software
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity. if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size. bits
Main memory storage capacity. bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O. back-up. and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
not apply
not apply
not apply
X.25
Software with firmware
assist
Rem. download or manual Auto. download-Eng/host
CP/M. Macro 80. Word- Various interface
star. Plink II
software
Software with firmware
assist
Auto. download-Eng/host
Various interface
software
Yes
Yes
Yes
All but O.S.
Yes. via user selected
parameters
All
Yes. via user selected
parameters
All
90 percent
All
All
26.000
150
None
7.920
Contact vendor
Contact vendor
10.000 (approx.)
Coverage dependent
Contact vendor
30.000 (approx.)
Coverage dependent
Contact vendor
Maximum practical configuration:
Purchase price. $
Monthly maintenance. $
Monthly lease/rental. $
185.000
1.110
None
15.000
Contact vendor
Contact vendor
20.000 (approx.)
Coverage dependent
Contact vendor
60.000
Coverage dependent
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
December 1983
500+
Telematics
Inform. not available
April 1983
No
1983
1.800
Tymnet
No
1981
1.050
Tymnet
Sold as a node in a
complete network.
compatible with
Tymnet's public
network.
Sold as a node in a
complete network.
compatible with
Tymnet's public network; also available
in a dual configuration; optional
redundancy features.
IPL method
Additional software supported
Disk or remote port
Pascal; C
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price. $
Monthly maintenance. $
Monthly lease/rental. $
COMMENTS
(
APRIL 1986
None
CCITT X.25 software
support; public or
private networks.
3270 support; multiprocessors (up to
5 CPUs).
-
Tri-Data
Supports networks up to
50 nodes @ 32 devices
per node.
© 1986 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-130
Processors
All About Communications Processors
Tymnet
Engine
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Most major vendors
No
No
Does not apply
Does not apply
does not apply
Does not apply
Does not apply
Does not apply
Pack. switch-prot.conv. . Yes
Configuration dependent
Configuration dependent
Yes
Yes
Yes
No
No
No
Yes
Yes
Tymnet proprietaryTymnet proprietary X.25 based
X.25 based
Configuration dependent
Configuration dependent
Configuration dependent
74K
None
10
10
No
9.6K
None
Yes
Yes
No
Yes
ASCII, Baudot, EBCDIC
Check sum w/ retrans.
Yes
Yes
Yes
Yes
No
Async to network
No
Check sum w / retrans.
110 to 9600 bps
Yes
Tymnet/proprietary
32
4M
Byte
Tymnet-utilizing LSI-11
16
60K
Byte
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Disk
Interrupt
Does not apply
Does not apply
None
Yes
Yes
Software with firmware
Firmware
assist
Auto down-disk/Eng/host Internal self load
Validation, oper./acct.
None
util., netwrk mgmt. &
control, E-Mail
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Yes, via user selected
parameters
All
No
All
100 percent
55,000 (approx.)
Coverage dependent
Contact vendor
3,300
Coverage dependent
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
120,000 (approx.)
Coverage dependent
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1978
1,100
Tymnet
COMMENTS
TymnetATC
(Asynchronous Terminal
Concentrator)
No
No
1984
300
Tymnet
Sold as a node or
supervisor in a complete network, compatible with Tymnet's
public network;
optional redundancy
features.
•
© 1986 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1986
C13-010-101
Processors
Communications Processors
(
Communications processors can be defined as multifunctional, program-controlled, digital computers dedicated to
communications and able to serve as control points, or
nodes, in a data communications network.
In general, such a processor performs one or more of three
major functions: front-end processing, intelligent switching, and concentration. A front-end processor serves as a
locally attached peripheral device to one or more large
computers dedicated to applications processing, relieving
them of the overhead involved in message handling and
network control. An intelligent switch routes messages
among the network's various end points and participates in
the network's control and management either under the
This report discusses the functions of a communications processor, which can be defined as a
multifunctional device that may serve as a front
end to a mainframe. as an intelligent switch, or as
a remote concentrator. The report also covers
communications processor ·design. its place in
modern network architectures, the evolution of
the communications processor. the general advantages and restrictions of today's communications processors, and the state of the communications processor marketplace.
The rapid evolution of microprocessor-driven. single-function devices such as protocol converters.
terminal controllers. and X.25 PADs caused Datapro. in 1984. to sharpen its definition of a communications processor to include only truly multifunctional. intelligent devices dedicated to
networking. Look for information on Conversion
Systems and Terminal Controllers behind Tab C23
in Volume 2 of DATAPRO REPORTS ON DATA
COMMUNICATIONS.
This report also includes comparison charts outlining the major characteristics of 69 communications processors from over 33 vendors.
control of a master (usually front-end) processor or as a
peer of other intelligent switches. A concentrator controls a
community of terminals, clusters of terminals, or distributed applications processors; gathers, queues, and multiplexes their transmissions onto one or more high-speed
network trunks; and participates in the network's control
and management, again either under the direction of a
master processor or as a peer of other concentrators and
switches.
Each of the three major functions is a combination of some
or all of the following subfunctions:
• physical transmission and reception of data
• data buffering and queueing
• multiplexing
• message framing and unframing
• control of transmission errors
• message sequencing
MIA-Corn's CP9000 Series II. Packet Network provides CCITT
standardized X.25 interfaces, X. 75 gateways, and other features
like X.121 addressing and closed user group facilities.
APRIL 1985
• protocol conversion
• message pacing and flow control
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-102
Processors
Communications Processors
Front~end
Processor
Concentrator
Intelligent
Switch
Front-end
Public Switched
Network
Processor
Concentrator
Intelligent
Switch
I------r-----'l
Conceritrator
Front-end
Processor
Figure 1. A communications processor can/unction as a/ront end/or one or more host computers, as an intelligent switching node not attached directly to any applications equipment, or as a remote terminal concentrator.
t> • message or packet assembly and disassembly
• route selection
• session establishment and disconnection
• formatting of data for use by specific host or terminal
applications
• reporting and logging of device or transmission errors or
failures
• fallback switching in case of host, device, or transmission
line failure
• gather and recording of network performance and traffic
statistics.
The most sophisticated communications processors, especially those marketed primarily as front ends by mainframe
computer vendors, can perform all of these tasks. Indeed,
in a large, complex network governed by one or more
mainframe hosts, a front end must perform all but the last
three in the normal course of its operations. Front-end
processing is the most complex task a communications
processor can perform.
Intelligent switching is slightly less complex, since the
communications processor acting as a dedicated switch
need not carry on a running dialogue with a host computer,
and is not responsible for the end-to-end establishment and
disconnection of sessions. Still, an intelligent switch, in
normal operation, must perform all but the last five basic
functions. An intelligent switch differs from a simple
switch, such as a port selection and contention device,
because it must monitor the network's traffic and performance, either under the control of a master processor
(usually a front end) or as.a peer among other intelligent
switches and concentrators, and change its behavior, notably the routing and pacing of messages, according to the
information it receives. A simple switch simply establishes
an information path according to instructions it receives
from a user or computer on one end of the connection.
Concentration is the least complex task a communications
processor can perform, and communications processors
acting as concentrators can easily be confused with less
sophisticated, single-function devices such as statistical
multiplexers, protocol converters, packet assembler/disassemblers (PADs), and terminal cluster controllers. Indeed,
with the widespread use of microprocessors and the declining cost of silicon intelligence, many devices at the high
ends of these lines are beginning to approach the functional
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1985
t>
C13-01 0-1 03
Processors
Communications Processors
Host
Computer
Host 1/0 }
Channel
Common Control
Components
....----, Control and
Maintenance
Panel or
I--_--J Console
1
line Bases
1
Line Sets
1
Communications Lines
Figure 2. The diagram shows the hierarchical, bus-based architecture of a typical communications processor. Such a processor may contain more than one host interface, sel'eral I/O processors, and many more line bases. Each line base serves communications lines ofa spe('(lic synchroni::ation, speed, and protocol. Each line set serl'es lines with a spec(fic physical interface. The modular arrangement (?f line
hases and line sets on the processor blls aI/oil's easy configuration and recon.figuration.
1:> breadth of true communications processors. The difference
is that true communications processing, concentration included, is a dynamic process involving feedback from other
intelligent devices in the network. Statistical multiplexing,
protocol conversion, and packet assembly/disassembly are
basically static processes that do not change as conditions
change on the network. An intelligent concentrator participates in the control of the network, either under the direction of a master processor or as a peer of other concentrators and switches, receiving status information from the
network and changing its behavior accordingly: accelerating or withholding transmissions, initiating diagnostic procedures for pathways and devices in its local domain, and
controlling access to the network from its locally attached
devices. Some sophisticated terminal controllers, notably
IBM's 3274s, can perform some or all of these functions. A
concentrator differs from a sophisticated terminal cluster
controller by its position in the network's hierarchy: a
concentrator can concentrate data from a number of cluster
controllers, while a cluster controller concentrates data
only from a number of individual terminals. As an example, consider the relative pOSitions in an SNA network of an
IBM 3705 acting as a remote node (concentrator) and an
IBM 3274 within that concentrator's domain. A user can
build an entire network from intelligent concentrators
communicating with one another as peers, but cannot do
the same with cluster controllers.
COMMUNICATIONS PROCESSOR DESIGN
The basic design of almost all communications processors
follows the same, three-tiered, hierarchical plan-a plan
APRIL 1985
that they share in general with their close cousins the digital
PBXs, and more generally with a number of other data
communications components.
The device's central processing unit (CPU) sits at the top of
the hierarchy along with its associated main memory; it
controls the communications processor's operation according to the rules and parameters of its operating software,
and, in front-end configurations, in conjunction with instructions from the host computer. In general, the CPU
performs the complex or dynamic tasks such as addressing,
route selection, protocol conversion, access control, session
establishment, application-level formatting, and error logging, and delegates the rote operations to subsidiary
components.
In most communications processors, some components
operating under the direction of the CPU perform general
functions involving the operation of the whole communications processor, while others perform functions dedicated to specific groups of lines. Among the former are the
host interfaces, the input/output (I/O) processors, the reference clock, and the operator interface. Among the latter are
the processor's line bases and line sets.
Communications processors configured as front ends must
have at least one host interface. The host interface handles
communications between the front-end processor and the
host's byte or block multiplexer, or selector channel. The
host interface buffers data from the front end's CPU,
assembles it into parallel bit streams ofa format specific to 1:>
© 1985 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-104
Processors
Communications Processors
NCR Comten's 3690 Communications Processor is the largest and
most capable oftheir IBM-compatible communications processors.
The 3690 supports twice the main
memory and communications line
attachments of the IBM 3725.
t> the attached host channel, and transmits it up the channel
to the host; for data coming from the host, it performs the
same process in reverse. The host interface's principal
function is conversion of data from the communications
processor's internal word size to that of the host computer.
Some communications processors contain one or more
input/output (I/O) processors that transfer data between
the CPU and attached storage peripherals, such as disk or
tape drives. In some cases, the I/O processors arbitrate
among the various line bases for access to main memory
and to the CPU, handling interrupts generated by the line
bases or host interfaces to gain the attention of the CPU, or
controlling the line bases' and host interfaces' access to
main memory. In communications processors with more
than one I/O processor, each I/O processor usually controls
a set complement of storage units or communications lines.
The reference clock generates a timing signal used by all
other components of the communications processor. In
many systems, reference timing is a function of the CPU.
Some systems have separate reference clocks for the timing
of signals at different data rates.
The operator interface allows a human operator to monitor
and control the communications processor and to run
diagnostic tests. In newer and more sophisticated systems,
the operator interface works under software control from a
dedicated console, which usually contains a CRT or similar
display unit and a printer for logging. In most communica-
tions processors, the operator interface works through a
front panel that contains a number of manual switches and
indicator lights.
All of the above-mentioned devices perform functions that
are shared among all communications lines; they sit just
below the CPU in the communications processor's internal
hierarchy. On the network side, the "business end" of a
communications processor, the line bases and line sets
complete the hierarchy.
A line base, sometimes called an attachment base, interface
base, or interface module, handles communications at the
Data Link layer between the communications processor
and a group of attached communications lines that share a
common synchronization pattern, line speed, and sometimes, protocol. Each line base usually contains a dedicated
microprocessor that performs such functions as framing
and stripping, message buffering, message sequencing, synchronization, and error detection under the direction of the
CPU. Most current communications processors accommodate from 8 to 32 line bases, each of which handles from
two to eight line sets.
A line set handles communications at the Physical layer
/
between its attached line base and from one to eight
communications lines. All the communications lines attached to a given line set must use the same physical
interface at roughly the same data rate. The line set handles
serialization of data and interface-level control signaling. I>
© 1985 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1985
C13-0l0-l05
Processors
Communications Processors
,I> AU the components of the communications processor com.
municate with one another over a parallel data bus, usually
located along the back plane or a side plane of the proces~or's cabinet. The physical bus architecture, made popular
in the design of minicomputers, allows for easy installation
and replacement of parts. In a hierarchical architecture
such as that of most communications processors, it also
makes for easy reconfiguration. To replace asynchronous
communications over voice grade lines with HDLC communications over wideband or satellite circuits for a 16-line
segment of a network, a user might need to replace only one
line base and eight line sets, rather than having to swap out
an entire front-end processor. The hierarchical design extends the communications processors' functionality over
time and helps to protect the user's investment in the face
of changing technology. Fig. 2 shows the hierarchical configuration of a generalized communications processor.
COMMUNICATIONS PROCESSORS AND NETWORK
ARCHITECTURES
The implementation of network architectures is perhaps
the most important ongoing theme in the development of
data communications. In general, there are two kinds of
network architectures: those designed to provide communications among computers and terminals from a specific
vendor, and those designed to provide open communications regardless of the vendor of the communicating devices. Mainframe vendor architectures include IBM's
SNA, Honeywell's DSA, Burroughs's BNA, and Sperry's
DCA. Open architectures include the CCITT's X.25 packet
switching specification and several "transparent" network
schemes marketed by communications vendors. The communications processor is the most important element in
both vendor-specific and open architectures. In the following paragraphs, we will use the International Organization
for Standard (ISO) reference model for Open Systems
Interconnection (OSI) to examine the different roles that
communications processors play in different kinds of network architectures.
(
In network architectures designed by mainframe computer
vendors, the communications processor functions most
often as a front end, and controls communications in
conjunction with one or more software systems in the host
computer. In general, the front-end processor handles the
Data Link through Session layers of the ISO model, with
host software implementing the Presentation and Application layers. The balance varies from architecture to archite,ciure. In Sperry's DCA the DCP-Series front end has
control over manyPresentation~layer functions, while in
IBM's SNA, the host's access method, along with software
residing in the 327X terminal controllers, handles communications down to the Session layer, with the 37XX front
end acting almost as a channel-attached packet switch. The
range of control assigned to front-end processors in other
mainframe architectures varies between those extremes.
In all the mainframe architectures, the same communications processor models that serve as front ends can also
function as intelligent switches and as remote concentrators. In lliesl;functions, the communications usually apAPRIL 1985
pear in smaller configUrations than in the front-end role.
Communications processors working in mainframe architecture can also perform another important function in
conjunction with any of the other three, that of an intelligent gateway. In this application, the communications
processor provides the interface between the mainframe
network and communications facilities outside the architecture, particularly public, packet switched data networks
using the X.25 protocols.
The function of a communications processor differs between the two kinds of open architectures. In a full-scale
open architecture such as X.25, the communications processor serves entirely as an intelligent packet switch, implementing the Data Link through Transport layers through a
uniform set of complementary protocols. Designed specifically for public data networks, the X.25 protocols provide
ultimately for the establishment of virtual circuits, or logical paths through the network, for devices from any vendor. Communicating devices, computers or terminals, at
either end of the virtual circuit must handle the Session,
Presentation, and Application layers according to their own
protocols. Since, in a public network, the network provider
is responsible for network management, the X.25 communications processors in such a network carry a heavy load
of access, error, and class-of-service control, along with
many provisions for statistical recording of traffic and
usage data that can be sorted by individual user account.
Communications processors, such as GTE Telenet's
TP4000, designed to function as switches in public networks are the likeliest to support high-capacity attached
storage devices such as disk and tape drives.
Communications proce!!sors operating in full-scale X.25
configurations seldom perform a gateway function. The
user must provide compatibility with the network's standard protocols, either through an X.25 software package
that resides in a participating host or its front-end processor, or through a packet assembler/disassembler (PAD)
that handles the Physical and Data Link layers of the
architecture. Table I shows the protocols supported by
various vendors' communications processors.
Transparent architectures are a relatively new development offered by vendors of communications equipment as
a low-cost alternative to mainframe architectures and fullscale X.25 implementations. These architectUres are usually stripped-down versions of X.25 without much of the
network administration and class-of-service overhead necessary to operate a public or very large private network. In
these architectures, the communications processor functions primarily as a switching concentrator, providing services at the Data Link, Network, and Transport layers.
Most such concentrators have evolved at the high ends of
lines of statistical multiplexers, adding the crucial routing
and flow control features that qualify them as communications processors. Some such products offer integrated network management functions such as error logging and
performance statistics, but most rely on a separate, complementary network management system to provide these
functions.
© 1985 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
~
C13-010-106
Processors
CommunicationsProaessC:)fS
TABLE 1. TERMINAL PROTOCOLS SUPPORTED
Manufacturer/
Product lIIame
ASCII
async./
other
BitOriented
Protocols'
X.25
'Packet
level
,
TTY
IBMBSC
IBM
SOlC
Ampahl4705
Yes
Yes
Yes
No
GTE Telenet.
Tymnet, Datapac
Amnet
N6000/XAS
N6000/XPS
N6000/XTS
N600/XAP PAD
N600/XAP PAD
N600/XAP PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
N600/XMU PAD
No
No
No
,Yes/DCE
Yes/DCE
Yes/DCE
Auscom 8911 A
Yes
Yes
Yes
Yes
Yes
BBN Communications C/30
Yes
Ves
Yes
No
Yes
Burroughs Corp.
CP9558-1 /CP9572
CP3680/CP3680-01
Yes
Ves
Yes
Yes
Yes
No
Yes
No
VIIS
No
Most Burrotl9hs protocols
Most, Bunoughs protocols;
some IBM protocols
Cableshare
CSI Data Concentrator
Yes
No
No
No
Yes
-
LSI-X.25 Front-End
Yes
No
No
No
GTE Teienet,
Tymnet, Euronet
LSI-X.25 Int, Concent.
Yes
No
No
No
Yes
Uninet, Detapac
PSS, Trarlspac, Datanet,
Telepac,OATEX
Same as above, and Telex.
LSI-X,25 Host Port
Concentrator
Yes
No
No
No
Yes
Same as above; and Telex
Century Analysis OSI
Yes
No
No
No
No
-
Chi Comm. Processors
Yes
Yes
No
Yes (HOLe)
Telenet
Codex 6520
Yes
Yes
No
No
No
COQ1puter Communications
CC-6
CC-8
Yes
Yes
. Yes
Yes,
No
No
No
No
Yes
Yes
No
No
No
GTE ,Telenet,
Tymnet
GTE'Telenet,
Tymnet
Control Data
2551-3 & 2551-4
Yes
Yes
No
No
GTE T'elenet,
Tymnet, Datapae,
Transpa~, BPO,
ITT
DCA 355
Yes
Yes
Yes
Yes
335
Yes
Yes
No
No
375
Yes
Yes, IBM
3270 BSC
No
No
GTE Telenet,
DEC DDCMP-trunk only
ITT, RCA
GTE Telenet
Tymnet, Datapac,
Uninet, Autonet,
PSS
Yes, Telenet,
Aeeunet, Cylix, PSS, Autonet
Tymnet, Uninet,
Transpae,
Datapae
GTE Telenet
TP4000 Series
Yes
Yes
No
Yes (HDI.C X,25)
GTE Telenet
IBM 2741
Honeywell Datanet 8
Yes
Yes
No
Yes (HOLe)
GTE Telenet,
+ 10 DONs
VIP, PVE, RCI, LHDLC
IBM
3705-11 (E 1 thru L4)
3705-80
3725
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
GTE Telenet
GTE Telenet
GTE Telenet
-
leot
251
Ye~
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes
No
Yes
No
No
HOLe
Tymnet, Telenet,
Uninet, PONs
No
No
Yes
CC-80/85
,.,."
,
352
35X
CrystaLink 254
Other, PfCItOcols Supported
-
,
-
NCR, Burrough!;
Tinet, Visa
PARS, Burroughs
Custom protocols ,available
on request
'
, ,
Telex
Rem 1, NTR, Uniseope 100 &
200,UTS
Telex,& IBM 2741. 2848,
2260
Telex
Telex, 83B3
Telex, 83B3, PARS, SABRE,
ARINC
-
NCR, AIRINC
-
Univac U400
NCR 279; VISA, Tinet,
Burroughs P/S
*Other bit-oriented protocols include AOCCP, HOLC, BOLC, and VOLe.
© 1985 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
'
APRIL ,1985
C13-010-107
Processors
Communications Processors
TABLE 1. TERMINAL PROTOCOLS SUPPORTED (Continued)
IBM BSC
IBM
SOLC
Other
BitOriented
Protocols·
Packet
Level
Yes
Yes
Yes
HDLC
Yes
NCR 279. VISA. Tinet.
Burroughs P!S
Yes
Yes
Yes
Yes
Yes
Virtually all are supported
Yes
Yes
Yes
Yes
No
Future
No
Yes
No
Future
III)!A-Com DCC
CP 9000 Series I
CP 9000 Series II
No
Yes
No
Yes
No
Yes
Yes
HDLC (LAP B)
Yes
Yes. Uninet
Memorex 1270
Yes
Yes
No
Via VAN
Telenet. Datapac.
PSS. Tymnet.
Transpac.
Datex-P
Memotec MPAC 2500
No
No
No
Yes
Yes
No
Micom Micro800
Yes
No
No
No
No
Async
No
No
No
Yes. Telenet.
Tymnet. Datapac.
Transpac.
Datex-P. Telepac
No
Yes
Yes
Yes
Yes
3670 Model 85
Yes
Yes
Yes
Yes
3690 {A5-E5. T1-Ul)
721-11
5620
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
NTX
3800 Model 1
3800 Model 2
No
No
Yes
No
No
No
No
No
No
No
NDLC (extended HDLe)
NDLC (extended HDLC)
Paradyne Pix!Pixnet
Yes
No
No
Paradyne SDLC
No
-
Pixnet-XL
No
No
No
HDLC. LAPD
-
-
Periphonics T-Comm
Yes
Yes
Yes
No
No
Fedwire. credit card
networks. A TM networks
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
-
Sperry
DCP!40 & DCP/20
Yes
Yes
No
Yes
Yes
REM1. NTR
Tandem 6100
Yes
Yes
Yes
Yes
Yes
Burroughs. Tinet; NCR
Telefile
Telepac
Yes
Yes
Yes
No
Telematics
VAX FEP
Net 25
Series 1
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Westinghouse Canada
W1655/656
Yes
Mid 1983
Mid 1983
Yes
Mid 1983
Manufacturer!
Product Name
CrystaLink 257
Inlotron
990NP Network Processor
Lemcom Systems
CMC-4. CMC-8. & CMC-32
Distributed Network
Processor Series
Micro860
NCR Comten
3650 & 3670
Telemarketer
VoicePac
CommStar
VoiceBox
ASCII
async.!
TTY
X.25
-
X.75
Sabre. Swift. SIT A
-
-
All major U.S. and European
networks
© 1985 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
Request price quotation
Request price quotation
Transpac.
83B3
Datapac
GTE Telenet.
Tymnet. Uninet.
Transpac.
Datapac. Datex-P.
UKPSS
Yes
83B3
Yes
NCR BSC & in-house DLC
Yes
-
*Other bit-oriented protocols include ADeep. HOLe. BOLe. and VOLe.
APRIL 1985
Other Protocols Supported
PARS
013.-010-108
Processors
Communications Processors
1> THE
EVOLUTION OF THE COMMUNICATIONS
..
PROCESSOR
The communications processor as we currently know it
came into being in the mid to late 1970s, the result of the
merger of several separate developments in both communications and data processing. Its direct ancestors were hardwired communications controllers such as the IBM 270X
and Sperry Univac CCM, relatively unintelligent combinations of large multiplexers and cabling concentrators designed to perform only the basic, rote operations of communications handling. These devices provided a physical
map of the network for the host, basically allowing it to find
each physical line in its logical polling sequence and performing simple error notification for the host.
Two developments in the late 1960s provided the technical
base for the modem communications processor: the minicomputer and the ARPAnet. The minicomputer provided
a small, relatively inexpensive, software-controlled machine that could perform any of a number of functions
more efficiently than a mainframe, and incidentally also
provided the b\ls architecture that gives communications
processors their modularity and flexibility. The ARPAnet,
the first large-scale packet switched data network, provided
the fundamental design principles for all current data com"
munications architectures. One of these principles was the
intelligent virtual circuit switch, the first functional communications processor.
A later development in minicomputer applications created
the distributed processor, a small computer, dedicated to
part of a larger application, that performed, as one of its
necessary functions, communications with its peers in a
distributed network. Distributed processing contributed
the idea of intelligent communications handling under
software control. Indeed, network architectures from such
minicomputer vendors as DEC and Hewlett-Packard are
applications of later communications developments onto
the framework of distributed processing among
minicomputers.
The lower cost of dedicated processing in small computers
and the increasing cost of mainframe processing power
made the idea of a dedicated small computer to off-load
intelligent communications handling from the mainframe
economically practical. The first intelligent front ends, such
as IBM's 3704, predate modern network architectures, and
to a large extent, made such architectures possible.
In the late 1970s, IBM's SNA and the ISO's OSI model, the
earliest general network architectures, advanced the idea of
data communications as an entirely separate function from
applications processing, and of the network as a physical
entity separate from its participating hosts and terminals.
The best way to implement a physically separate communi~
cations function is through a system of small computers
dedicated to communications. Such communications processors could be placed at the front end of the mainframe,
or could function independently as concentrators and
switches within their respective architectures.
One further development produced the communications
processor as we know it today: the microprocessor. The
advent of cheap silicon intelligence allows designers to
implement the hierarchical scheme of the typical communications architecture in hardware, with dedicated microprocessors performing low-level functions and reporting to
larger and more complex processors at the higher levels.
Indeed, some line bases in present-day communications
processors are programmable, receiving downloads from
the units' CPUs that describe the protocol and synchronization each is to use. Some newer systems are composed
entirely of redundant, microprocessor-controlled modules,
each of which can perform any of the functions of any other
with the proper software load; such a processor is actually a
distributed communications network in a box.
The Telematics' Series 1 Processor is a 32-bit CPU based on the
Motorola 68000 chip set.
The advent of the microprocessor has also begun to blur the
distinction between traditional communications processors and less broadly functional devices such as multiplexers and terminal controllers, and has created a new class of
intelligent protocol converters dedicated to a task that was t>
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1985
C13-010-109
Processors
Communications Processors
(
t> once
economical only as a function within a multifunctional communications controller. Now, even modems can
detect, report, and in some cases correct transmission
errors, and sense the conditions of transmission lines. The
old definition ofa communications processor as a computer that has been programmed to perform one or more
control and/or processing functions in a data communications network now includes everything from modems and
dedicated monitoring equipment up to the IBM 3725.
In answer to this shifting definition, Datapro created a
section in Volume 2 of DATA PRO REPORTS ON DATA
COMMUNICATIONS, Tab C23, entitled Conversion Systems/Terminal Controllers. In this section, the reader will
find information on many product categories formerly
covered in this report: protocol converters, intelligent terminal controllers, and PADs, to name three. To complement the C23 section, we have sharpened the focus of this
C 13 report to include only true, multifunctional communications processors.
ADVANTAGES AND RESTRICTIONS
The principal advantage of a communications processor as
a networking tool is the physical and logical separation of
the networking function from the application of its end
users. Whatever its architecture, such a network can function for any application, can grow in size without qualitative change to accommodate new applications, and can
accommodate new applications through the installation of
relatively standard, intelligent components. In simpler
terms, the user does not have to redesign and rebuild a
modular network to accommodate a change in the network's ultimate purpose.
Programmable, software-controlled communications processors are an especially handy tool in such standalone
networks because they can accommodate not only changes
in application but also the effects of technical progress. A
software-controlled communications processor with a good
design can survive several breakthroughs in networking
technique through relatively simple upgrades. The newer,
microprocessor-controlled line bases, and even line sets,
provide an even more flexible buffer against obsolescence.
In operation, a network controlled by communications
processors can survive the total failure of one or more of its
host processors. In a multihost network, front-end processors can switch users from applications in a failed host to
similar or identical applications in a backup host, perhaps
elsewhere on the network. In a single-host network, a
functioning front end allows for a graceful degradation of
service in the event of a host failure, perhaps allowing users
time to terminate their tasks before total system failure, or
allowing communications among distributed application
processors in the absence of the controlling host.
Also in operation, the communications processor still fulfills its original purpose; relieving the host of the overhead
generated in keeping track of a network. Today's networks
are orders of magnitude more complex than those of the
APRIL 1985
mid 1970s when the first communications processors appeared, and thanks to the ever-lower cost of memory and
processing power, some oftoday's communications processors are bigger, faster, and more powerful than that era's
mainframes. They need to be.
Among the restrictions oftoday's communications processors are complexity and incompatibility. In an era of userfriendly hardware and software, the communications processor remains a device with which only a trained engineer
should meddle. Most require that their programs be written
in an arcane, assembler-level language, sometimes with the
benefit of pregenerated macros in the host access method,
often without.
Even with recent advances in simplicity and modularity,
configuring a communications processor to suit a specific
network or application can be difficult. With today's microprocessor technology, the better communications processors are the simpler; as an example, IBM's new 3725
Communication Controller sports a parts list only half as
long as that of the older 3705. The trend is toward fewer
components each of which can do more, but most communications processors are still lagging a bit behind that trend.
Despite the advent of open architectures and the impending arrival of truly standard protocols, the integration of
terminals, computers, and protocols foreign to a given
vendor's architecture remains difficult. The gateway function is a plus, but it is cumbersome and often expensive.
Most vendors are beginning to offer some level of IBM
compatibility through their communications processors,
but balk at anything beyond concession to the obvious
market leader.
THE CURRENT MARKETPLACE
The market for full-scale communications processors can
be broken down into four segments: IBM and plug-compat-
ible communications processors for the IBM mainframe
environment; communications processors dedicated to the
mainframe architectures of vendors other than IBM; packet-switching processors marketed as components of large,
vendor-independent private networks; and intelligent concentrators designed to serve in transparent network
architectures.
In the IBM world, IBM sells 90 percent of the communications processors. The remaining 10 percent accounts for
some ofthe most intense competition in data communications. Within that market, NCR Com ten is the clear leader,
followed by Amdahl and Computer Communications Inc.,
Memorex, and NTX.
The other mainframe vendors, Burroughs, Control Data,
Honeywell, NCR, and Sperry do not really compete with
one another in the communications processing marketplace. Each features a line of communications processors
dedicated to its network architecture, and each line of
communications processors has its merits. Honeywell's
Datanet 8 line features a broad array of compatibility t>
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C1S-010-110
Processors
Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS
The comparison charts that follow this report list the major
characteristics of 68 commercially available communications
processors. The text below explains the chart entries, in order of
their appearance· on the charts.
Computer systems interfaced. For processors that serve IBM
and plug compatible mainframe computers, we assume that
they serve the entire, upward-compatible IBM line (IBM 370,
303X, 308X, and 43XX) along with the major plug-compatibles. For processors operating in open network architectures,
we list "Most major vendors."
Functional Configurations
Front-end Processors. A "yes" for this entry indicates that the
processor in question can serve as a channel-attached front end
to a mainframe computer. The next two entries list the maximum number of hosts that can be channel attached, and the
number of those hosts that can be active simultaneously. A
third entry lists the degree of IBM emulation the processor can
perform.
Remote line concentrator. A "yes" for this entry indicates that
the processor in question can serve as a line concentrator
remote from any host processor in its network. The entry below
lists the number of hosts that concentrator can serve at one
time.
Host-independent network processor. A "yes" for this entry
indicates that the processor in question can control a network
of open architecture without the direction of a host computer.
Store-and-forward message switching processor. A "yes" for
this entry indicates that the processor in question can function
as a standalone, store-and-forward message switch.
Distributed processing node. Most true communications processors are not able to perform applications processing, however, some, including a few intelligent concentrators, can support
some distributed applications in addition to their principal
networking function. This class of communications processor
is becoming rarer.
MultiplexingJdemultiplexing. A "yes" for this entry indicates
that the processor in question can function as a multiplexer.
Terminal-initiated application switching. A "yes" for this entry
indicates that the processor in question supports the selection
of applications within a session between an attached terminal
and an attached host, at the terminal's request.
Communications processor initiated dynamic line reconfiguration. Dynamic line configuration is another name for fallback
switching. A "yes" for this entry indicates that the processor in
question can switch a session from a connection involving a
failed line or communications processor component to a
healthy connection when it senses the failure, without operator
intervention.
Protocol conversion. The most common protocol conversion is
from asynchronous ASCII to the synchronous trunk protocol
specified by a given architecture (e.g., IBM's BSC or SDLC, or
X.25's LAP-B). This entry specifies the types of protocol conversion the processor in question can perform.
Code conversion. The most common code conversion is from
ASCII to IBM's EBCDIC. This entry indicates which code
conversions the processor in question can perform.
Error control. This entry specifies which of the available
schemes for error detection (e.g., Parity, LRC, or CRC) the
processor in question uses.
Automatic transmission speed detection. If the processor in
question can sense the data rate of a given transmission without
intervention from the operator or user, this entry lists the
speeds it can sense.
Automatic disconnect of inactive dial-up terminals. Many communications processors can sense activity on their attached
terminals and disconnect a terminal session if it has been
inactive for a specified period of time. A "yes" for this entry
indicates that the processor in question can do so.
System Characteristics
Terminal controller. A "yes" for this entry indicates that the
processor in question can function as a terminal controller
within its architecture.
Network architecture compliance. Some communications processors function exclusively within their vendors' network
architectures; others support open architectures such as X.25. If
a processor supports no network architecture, it may be a
"transparent" device, or it may support the prearchitectural
protocols of the vendor(s) whose hosts it supports.
Communications line capacity. The five sections of this entry all
deal with the number oflines a communications processor can
support within specific ranges of data rates. The first three list
the maximum number of half-duplex communications lines
the processor can support within the three specified speed
ranges. The fourth lists the highest data rate the processor can
support. The fifth lists the effect (if any) that converting all lines
to full-duplex operation would have on capacity. Where such a
conversion has an effect, it usually cuts the maximum in half.
Communications Features/Functions
Entries under this heading list a number of major functions a
communications processor can perform, but that not all communications processors do perform.
Processor type. This entry lists the vendor and model of the
communications' processor's CPU. Many communications
processors use standard OEM microprocessors such as the Z80
or the MC68000.
Main memory word size, bits. In most cases, the main memory
word size is also the width of the processor's internal transmission path along its bus.
Main memory storage capacity, bytes. This entry lists the
capacity of main memory in the communications processor in
question. Large main memory capacity is useful for transmission with modern, high-speed protocols in which large blocks of
data must be stored for retransmission in case of error. Abundant main memory is also useful for the performance of a
number of high-level functions on a time-shared or interrupt
basis.
Level of data unit transferred across I/O channel. Communications processors configured as front ends transfer data to and
from the host through an I/O channel. The width, in bits, of the
1/0 channel, coupled with the communications processor's
main memory word size, yields the level of data transferred
(e.g., byte, or block).
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1985
(
/
C13-0l0-lll
Processors
Communications Processors
(
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS (Continued)
Type of data transfer supported between memory and a) communications lines, b) mass storage, and c) other peripherals. In
some communications processors, only the CPU has access to
main memory, and other components, such as line bases and
I/O processors must interrupt the CPU to read or write information in main memory. In others, microprocessors in the
subsidiary components have share control of main memory
with the CPU, and can read and write memory on their own.
The latter process is called Direct Memory Access (DMA).
I/O, backup, and diagnostic peripherals supported. Most communications processors interact only with their attached hosts
and terminals, and rely on host disk systems for storage and on
host software for detailed diagnostics. Some newer models,
however, support local disk storage for control software, traffic,
and support information, and feature diagnostic consoles for
direct operator intervention.
Support for remote console. Some processors that support local
operators consoles can also support an operator's console
attached over communications lines.
Communications operating software:
Operating system implemented in. This entry indicates how the
processor in question' stores its control program: wired directly
and inflexibly into the hardware, in software that must be
loaded into memory from the outside, in firmware (local readonly memory) onboard the processor, or in some combination
of these.
t>
Additional software supported. This entry lists any network
control or applications software that the processor in question
can support.
User programmability. This entry indicates the degree of control users have over the control programs in the communications processor. Some are programmable in the sense that users
can select among a number of preset configuration parameters,
usually from a menu. Others are fully programmable, usually
through an assembler-level language. Mainframe front-end
processors usually use a subset of their hosts' access methods
implemented in macros; other programmable communications
processors use a native assembler language.
Software separately priced. This entry shows to what extent the
communications processor's operating software is bundled
with the cost of the hardware.
Approximate proportion of currently installed systems supplied
as turnkey systems. A turnkey system is a system with which
the user need not participate in the configuration design; the
user can simply "turn the key" and have a working system.
Conversely, a turnkey system is one for which the user is denied
the privilege of a custom configuration.
IPL method. This entry indicates how the processor in question
receives its initial program load: from its host processor, from a
locally attached diskette activated by an operator, or from
onboard read-only memory.
Pricing and Availability. Entries under this header list purchase, lease (or rental) and maintenance pricing for minimum
and maximum configurations, whether maintenance is bundled with the lease or rental price, the product's date of first
delivery, the number of processors of that model the vendor
has installed to date, and the provider of service and maintenance for the product. 0
software. Sperry's OPC Series goes farther than most in
providing host-independent networking.
BBN Communications, 70 Fawcett Street, Cambridge, MA
02238. Telephone (617) 497-2800.
Among vendors of private networks, the two U.S. public
network leaders, Tymnet and GTE Telenet have solid
offerings. Other vendors include Amnet, and BBN Communications, designers of the original ARPAnet and recently gone commercial.
Burroughs Corporation, Burroughs Place, Detroit, MI 48232.
Telephone (313) 972-7000.
A number of vendors offer intelligent concentrators, often
at the high ends of lines of statistical multiplexers. Among
these are Infotron, Micom, and Codex.
Communications Processor Vendors
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone
numbers of the vendors whose communications products
are shown in the comparison charts that follow.
Cableshare, 20 Enterprise Drive P.O. Box 5880, London,
Ontario, Canada N6A 4L6. Telephone (519) 686-2900.
Century Analysis, 80 Berry Drive, Pacheco, CA 94553. Telephone (415) 680-7800.
CHI Corporation, 26055 Emery Road, Cleveland, OH 44128.
Telephone (216) 831-2622.
Codex Corporation, 20 Codex Corporation, 20 Cabot Boulevard, Mansfield, MA 02048. Telephone (617) 364-2000.
Computer Communications Inc., 2610 Columbia Street, Torrance, CA 90503. Telephone (213) 320-9101.
Control Data Corporation, 8160 34th Avenue South, Minneapolis, MN 55420. Telephone (612) 853-8100.
Amdahl Corporation, 1250 East Arques Avenue P.O. Box 470,
Sunnyvale, CA 94088-3470. Telephone (408) 746-6000.
Digital Communications Associates, Inc. (DCA), 303 Technology Park, Norcross, GA 30092. Telephone (404) 448-1400.
Amnet, Inc., 101 Morse Street P.O. Box 412, Watertown, MA
02172. Telephone (617) 923-1850.
GTE Telenet Communications Corp., 8229 Boone Boulevard,
Vienna, VA 22180. Telephone (703) 442-1000.
Auscom, Inc., 2007 Kramer Lane Suite 102, Austin, TX 75758.
Telephone (512) 836-8080.
Honeywell Information Systems, Inc., 200 Smith Street, Waltham, MA 02154. Telephone (617) 895-6000.
APRIL '1985
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
t>
C13-010-112
Processors
Communications 'Processors
t>
leot Corporation, 830 Maude Avenue, Mountain View, CA
94043. Telephone (415)964-4635.
NTX Communications Corporation, 508 Tasman Drive, Sun- .
. nyvale,CA 94089. Telephone (408) 747-1444.
Infotron Systems Corporation, 9.North Olney Avenue, Cherry
Hill, NJ 08003. Telephone (609) 424-9400.
Paradyne Corporation, 8550 Ulmerton Road, Largo, FL
33540. Telephone (813) 530-2000.
'
International Business Machines Corporation, Old Orchard
Road, Armonk, NY 10504. Contact your local IBM
representative.
Peripbonics Corporation, 4000 Veterans Memorial Highway,
Bohemia, NY 11716. Tel!!phone (516) 467-0500.
Lemcom Systems, Inc., 2104 West Peoria Avenue, Phoenix,
AZ 85029. Telephone (602) 944-1543.
Sperry Corporation, Computer SY!items Division,P.O. Box
500, Blue Bell, PA 19424. Telephone (215) 542-4011.
Tandem Computer, Corporate Headquarters, 19191 Vallco
Parkway, Cupertino, CA 95104. Telephone (408) 725-6000.
MIA-COM Telecommunications Div., Comm. Network
Group, 11717 Exploration Lane, Germantown, MD 20874.
Telephone (301) 428-5500.
Telefile, Computer Products, Inc., 17131 Daimler Street, Ir.
vine, CA 92714. Telephone (714) 557-6660.
J..
Memorex, San Tomas'at Central Expressway, Santa Clara; CA
95052. Telephone (408) 987-3593.
Memotec, 4940 Fisher, Montreal, Quebec, Canada H4T lJ7.
Telephone (514) 738-4781.
Mieom Systems, Inc., 20151 Nordhoff Avenue, Chatsworth,
'
CA 91311. Telephone (213) 882-6890.
NCR Comten, 2700 Snelling Avenue North,. St. Paul, MN
.,'
".
'
55113. Telephone (612) 638-7777.
Telematics International, Inc., Crown Center, 1415 NW 62nd
Street, Fort Lauderdale, FL 33309. Telephone (305) 772-3070.
Tri-Data, 505 East Middlefield Road, Mountain View, CA
94039-7505. Telephone (415) 969-3700.
Tymnet, Inc. 2710 Orchard Parkway, San Jose, CA 95134.
Telephone (408) 946-4900.
Westinghouse Canada, Inc., 777 Walkers Line; P.O. Box 5009,
Burlington, Ontario, Canada LOR ITO. Telephone (416)
'
528-8811. d
© 1985 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1985
C13-010-113
Processors
Communications Processors
Amdahl
4705'
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Amdahl
4705E'
Amnet
N6000jXAS
Amnet
N6000jXPS
All IBM and Amdahl
compatible mainframes
All IBM- and Amdahlcompatible mainframes
Most vendors
Most vendors
Yes
4
4
270X/370X,EP,NCP,ACF
Yes
Unlimited
No
No
No
No
SNA
Yes
4
4
270X/3708, EP, NCP, ACF
Yes
Unlimited
No
No
No
No
SNA
No
Does not apply
Does not apply
Does not apply
Yes
112
Yes
No
No
No
OSI X.25
No
Does not apply
Does not apply
Does not apply
Yes
1,024
Yes
No
No
No
OSI X.25
352
352
Application-dependent
64K
Capacity halved
352
352
Application-dependent
64K
Capacity halved
112
112
28
64K
None
1,024
1,024
256
64K
None
No
Yes
No
SIS, BSC, SDLC to X.25
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Yes
No
Yes
No
SIS, BSC, SDLCto X.25
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
PAD
PAD
Yes
Yes
Yes
Yes
Yes
Yes
PAD
PAD
Proprietary
18
512K
Byte or block
Proprietary
18
1024K
Byte or block
Multi-microprocessor
16
Up to 1M
Byte & block
Multi-microprocessor
16
Up to 4M
Byte & block
DMA and interrupt
DMA and interrupt
None
None
Diskette (diagnostic)
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Yes
No
Yes
Yes
Software
Software
Software
Software
IPL method
Additional software supported
Download from host
Comm-pro
Download from host
Comm-pro
Local & remote IPL
Utilities
Local & remote IPL
Utilities
User programmability
Yes
Yes
Yes/restricted
Yes/restricted
Software separately priced
Yes
Yes
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Approx. proportion of currently installed
systems supplied as turnkey systems
-
-
Diskette as diagnostic
peripheral
No
Yes
Yes
Does not apply
Does not apply
All
All
50,225
448
1,444 (2-yr. lease)
52,400
360
2,935 (2-yr. lease)
25,000
Info. not available
Info. not available
75,000
Info. not available
Info. not available
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
327,970
2,682
14,196 (2-yr. lease)
300,000+
500
7,200 (2-yr. lease)
100,000
Info. not available
Info. not available
1,000,000
Info. not available
Info. not available
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
November 1979
700
Amdahl
No
April 19B3
700
Amdahl
Info. not available
Info. not available
Info. not available
Amnet
Info. not available
Info. not available
Info. not available
Amnet
Operates with IBM
3705 and 3705/Commpro software, with up
to 1.8 times the 3705
throughput capacity.
·1984 Information
Operates with IBM
3705 and 3705/Commpro software, with up
to 2.4 times the 3705
throughput capacity.
·1984 information
Dynamic packet routing
Dist. Net. Mgmt. Autocall.
Redundant hardware,
Dist. Net. Mgmt. Autocall, Dynamic routing.
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1985
© 1985 OAT APRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13~010-114
Processors
Communications Processors
Amnet
1li6000/XTS
SUPPLIER AND MODEL
Auscom
8911A
BUlToughs
CP3680/
CP3680-01*
BBN Communications
Corp. C/30 PSN
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors
IBM 360. 370, 43XX,
308Xandplug-compatibles
Most vendors
Burroughs B2ooo,
B30oo, and B4000
Series
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does not apply
Does not apply
Does not apply
Yes
512
Yes
No
No
No
OSI X.25
Yes
2
2
Any IBM control unit
Yes
2
Yes
Yes
Yes
Yes
Most LANs and custom
No
Does not apply
Does not apply
No
Does not apply
Yes(Packet switch node)
No
No
No
X.25
Yes
4
4
No
Yes
4
No
Yes
Yes
Yes
BNA
512
512
128
64K
None
Application-dependent
Application-dependent
Application-dependent
56K
None
44
44
32
64K bps
None
288 asyne., 72 sync.
40
40
19.2K
Capacity halved
Yes
Yes
Yes
Yes
Yes
Yes
PAD
PAD
Yes
Yes
Yes
Yes
Yes
Yes
None
Yes
Yes
Yes
Yes
No
No
LRC; CRC; EDAC
No
Yes
Multi-microprocessor
16
Up to 2M
8yte and block
DEC LSI-11
16
256K
Byte
BBNCC
20
512K
Byte; block
DMA, ,Interrupt
DMA, Interrupt
DMA, Interrupt
Console, printer, disk
DMA and Interrupt
DMA and Interrupt
Does not apply
Remote console
Yes
DMA
DMA
DMA
Disk,
tape
Yes
Software
Software and firmware
Software and firmware
IPL method
Additional software supported
Local and remote IPl
Utilities
From diskette or tape
Program Dei
Download
Diagnostics; performance measure
User programmability
Yes, on restricted
basis
Yes
User-created programs
No
All except diagnostics
None
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
and Interrupt
and Interrupt
and Interrupt
diskette" mag.
No
Yes
Does not apply
-
-
Yes
Yes
-
-
/
DMA and Interrupt
DMA
-
Combination software
and firmware
Downlpad from host
NDL,DCS
Yes, via user-selected
parameters
All
75%
,
45,000
Info. not available
Info. not available
14,995
By component
Not available
62,000
Time/distance
None
64,050 (3680)
535
2.415 (3-yr. lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
500,000
Info. not available
Info. not available
19,750
By component
Not available
69,000
Time/distance
None
124,950 (3680+ -(1)
1,010
2,310 (3-yr. lease)
Is maintenance bundled'with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Info. not available
January 1983
12
Amnet
No
July 1980
600
Auscom
Does not apply
1981
Over 500
BBNCC
-
Dynamic routing Distributed Net Management Autocall.
Designed as a programmabie IBM channel
interface or FEP
emulating standard
control units; additional lines supported
with extended chassis.
Dynamic packet routing;
logical addressing;
remote monitoring;
unattended operation.
Redundant system
·1984 information.
COMMENTS
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
,
,-
All
90%
,/
January 1978
200
Burroughs
APRIL 1985
C13-010-115
Processors
Communications Processors
.....
(
Burroughs
CP9558-1/
CP9572'
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SVSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
All computers using
ASCII serial communication ports
DEC PDP-11 and V AX
All hosts supporting
async. communications
No
Ves
16
16
No
Ves
16
Ves
No
No
Ves
X.25
Ves
1
1
No
No
1
Ves
No
No
No
X.25,OSI
Ves
32 async channels
32
No
Ves
32
Ves
No
No
Ves
X.25,OSI
16
16
16
56K
None
127
127
127
19.2K
Halved
32
32
32
19.2K
Halved
ASCII to EBCDIC
-
Ves
Ves
No
Async to X.25
None
X.25 procedures
Ves
Ves
Ves
No
No
Async./X.25
1
Info. not available
No
No
Ves
No
No
Async.jX.25
Baudot/ ASCII
Info. not available
Ves, 110-9600 bps
Ves
B920
16; multiprocessors
1.2M
Byte
Intel 8088
16
192K
Block
LSI-11/2 or PDP-11/23
16
64K
Block
LSI-11/2 or PDP-11/23
16
64K
Info. not available
DMA
DMA
DMA
None
None
Console
DMA
None
None
FEP console
Info. not available
Info. not available
Info. not available
Console
-
Ves
Ves
Ves
Combination of software and firmware
Software and firmware
Software
Software
Internal self-load
None
Download from host
None
Internal self-load
None
Ves, via user-selected
parameters
None
No
No
Info. not available
Info. not available
-
-Ves
12
Ves
Ves
Ves
Ves
BNA, SNA
47
12
19.2K
None
-
Mag. tap!!, floppy
and hard disk
-
User programmability
-
Software separately priced
-
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Cableshare
LSI-X.25 Host Port
Concentrator"
All Burroughs; IBM
S/370, 30XX, 43XX,
and compatibles
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
Cableshare
LSI-X.25
Front-End Processor·
Cableshare CSI
Data Concentrator'
All
-
All
All
22,559 (9572)
75
729 (3-yr. lease)
3,000
None
Not available
13,450
100
None
Contact vendor
70
None
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
29,401 (9558-1)
200
1,033 (3-yr. lease)
5,600
None
Not available
16,450
125
Contact vendor
100
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Ves
October 1980
1,000
Burroughs
No
June 1,1983
No
Cableshare
'1984 information.
'1 984 information.
COMMENTS
APRIL 1985
-
-
November 1978
75
Digital Equipment Corp.
March 1980
25
Digital Equipment Corp.
DTE or DCE support;
supports up to 5 X.25
network links with DTE
or DCE configuration;
'1984 information.
DTE or DeE support;
supports up to 5 X.25
network links with DTE
or DCE configuration;
'1984 information.
© 1985 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
C13-010-116
Processors
Communications· Processors
Century Analysis
OSI
(Office Systems
Interface)
Cableshare
LS.I-X.25 Intelligent
Concentretor*
SUPPLIER AND MODEL
Chi
Communications
Processor
Codex
6520
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
All async terminals
DEC PDP Series, NCR
Century & Criterion
Sperry 1100 Series
IBM S/370, 30XX,
43XX,and compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
32 async channels
32
No
Yes
32
Yes
No
No
Yes
X.25,OSI
Yes
None
Multiple
No
Yes
Multiple
Yes
Yes
Yes
Yes
Yes
Yes
B
8
No
Yes
Unlimited
Yes
No
No
Yes
No
Yes
4
2
270X, 370X
No
Does not apply
No.
No
No
No
No
32
32
32
19.2K
Halved
24
24
24
19.2K
None
Over 1000
300
150
64K
To 56K
240
Config.-dependent
Config.-dependent
230.4K
None
Yes
No
No
Async/X.25
Baudot/ ASCII
Yes
Yes
Yes
Yes
Planned
Planned
Yes
No
No
Yes
Yes
Yes
Yes; all protocols
ASCII/EBCDIC/XS3
LRC, BCC, and CRC
Yes, 110-19.2K bps
Site option
No
Yes
Yes
ASCII/2741
ASCII/EBCDIC
LRC and CRC
Yes; 135 to 9600 bps
No
LSI-ll/2 or PDP-ll /23
16
64K
Info. not available
CAI-l08/116/124
16
1M
Block
Perkin-Elmer 3200
32
4M
Byte
CCI 801
16
64K
Byte
Info. not available
Info. not available
Info. not available
Console
Interrupt
Interrupt
Interrupt
FEP Console
DMA and Interrupt
DMA and Interrupt
FEP console
Console, patch panel
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console
Yes
Yes
Yes
Yes
Software
Combination of software and firmware
Download from host
Combination software
and firmware
Host/self-Ioad/disk.
Simulator and other
utilities
From host or diskette
Yes, via user-selected
parameters
X.25; X780 package,
uniscope term. emulator
-
All
All
35,000
300
None
Contact vendor
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-Yes,
110-9600 bps
IPL method
Additional software supported
Internal self-load
None
User programmability
No
Software separately priced
Info. not available
Via user-selected
parameters
No
All
All
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
-
Contact vendor
70
None
6,500
Software 25; h/w 150
Contact vendor
100
10,950
Software 25; h/w 150
-
-
-
500,000
Info. not available
None
No
December 1981
570
CAl
No
1977
69
Chi Corporation
DTE or DCE support;
supports up to 5 X,25
network links with DTE
or DCE configuration;
·1984 information.
CAl implementation
uses Motorola 68000,
flow control, loadleveling, raw line
class selection, error
correction, terminal
key-ahead buffering.
Dynamic routing; two
async. screen editors;
automatic terminal
protocol detection;
redundancy; multiple
local and remote hosts;
UTS simulation; UTS
on X.25 network.
March 1980
125
Digital Equipment Corp.
© 1985 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
,
/
Software
-
-
-
-
January 1980
Info. not available
Codex
f
APRIL 1985
/
C13-010-117
Processors
Communications Processors
Computer
Communications
CC-6
Computer
Communications
CC-S
Computer
Communications
CC-SO/S5
IBM S/370, 30XX, 43XX,
and compatibles
IBM S/370, 30XX,43XX,
and compatibles
IBM S/370, 30XX, 43XX,
and compatibles
CDC Cyber 170,CDC Cyber
180, Cyber 70, Cyber
6000 Series
Yes
2
2
270X/370X EP
No
Does not apply
No
No
No
Yes
No
Yes
4
4
270X/370X EP
No
Does not apply
No
No
No
Yes
No
Yes
7
7
270X/370X EP
No
Does not apply
Yes
Yes
No
Yes
No
Yes
2
1
No
Yes
8
No
No
No
No
Yes
32
32
4
56K
None
240
120
32
230.4K
None
1232
120
120
230.4K
None
32
32
4 @ 19.2K; 2 @ 56K
56K
None
Yes
No
No
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
CCI 601
16
64K
Byte
CCI 801
16
64K
Byte
CC18OO1/8501
16
256K
Byte
CDC 2551-3
16
256K
Byte and control
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Control panel
DMA and Interrupt.
DMA and Interrupt
DMA and Interrupt
Disk (40-200 MB), mag
tape, FEP CRT, printer
Yes
DMA and Interrupt
None
DMA and Interrupt
Console, cassette
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP CRT console,
diskette, printer
Yes
Software
Software
Software
IPL method
Additional software supported
Download from host
Assembler, utilities,
diagnostics
From host/diskette
Value-added options
assembler loader,
utilities, diagnostics
User programmability
Yes. via user parameters and programs
None
Yes, via user parameters and programs
Value-added options
From host/disk
Value-added options,
custom software,
assembler, loader,
utilities
Yes, via user parameters and programs
Options and custom sys.
Combination of software and firmware
Download from host
None
All
90%
95%
98%
24,990
150
802 (3-yr.); 1048
(rental)
39,840
296
1,224 (3-yr.); 1,600
(rental)
68,000/115,640
246/426
1,932 (3-yr. lease)
36,955
433
1,067 (3-yr. lease)
51,368
405
1,742 (3-yr.); 2,263
(rental)
Yes
November 1981
25
Computer Comm.
181,200
1,593
5,858 (3-yr.); 7,635
(rental)
Yes
1976
250
Computer Comm.
674,050
3,344
17,523 (3-yr. lease)
68,570
751
2,048 (3-yr. lease)
Yes
1975
417
Computer Comm.
No
January 1983
Info. not available
Control Data Corp.
Auto-poll, auto-baud
rate detect, autodial, multihost support, user programmability, field
upgradability, reverse
channel.
Auto-poll, auto-baud
rate detect, speed &
code conversion, auto
dump, auto load, multi
host support, terminal
initiated line sel.,
etc.
Used mainly for custom
store-and-forward
message switches,
electronic mail, &
high speed transaction
processing systems
(e.g., airline
reservations).
Predecessor was 2550
products, first shipped
in 1976.
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front -end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
('
Control Data
2551-3
Yes
Yes
All
J
APRIL 1985
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010·118
Processors
Communications Processors
Digital
Communications
Associates
System 355
Control Data
2551-4
SUPPliER AND. MODEl.
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Digital
Communications
Associates
System 335
Digital
Communications
Associates
System 375
CDC Cyber 170,
CDC Cyber 180, Cyber
6000 Series, Cyber 70
Most vendors
MOst vendors
Most vendors
Yes
2
1
No
Yes
8
No
No
No
No
Yes
DEC-l0; FEP-l0 opt.
44
22+
No
Yes
Unrestricted
Yes
No
No
Yes
INA
No
Does not apply
Does not apply
No
Yes
Unrestricted
Yes
No
No
Yes
INA
DEC-l0, FEP-l0 (opt. I
100+
100+
No
Yes
100+
Yes
No
No
Yes
INA
254
254
4 @ 19.2K; 2 @ 56K
56K
None
44 trunks, 120 lines
44 trunks, 120 lines
22 trunks
19.2K
None
34 trunks, 60 lines
34 trunks, 60 lines
17 trunks
19.2K
None
114 trunks, 120 lines
114 trunks, 120 lines
57 trunks
19.2K bps
None
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
Async./X.25
Yes
Yes-ARC
110 to 9600 bps
Yes
Yes
Yes
Yes
Async. to X.25
No
Yes-ARC
110 to 9600 bps
Yes
Yes
Yes
Yes
Async/X.25
No
Yes - ARO
110 - 9600 bps
Yes
CDC 2551-4
16
256K
Byte and control
Z80A
8
1472K (64K per Z80Al
Byte
Z80As
8
384K
Byte
280A
8
3776K
Byte
DMA and Interrupt
None
DMA and Interrupt
Console, cassette
DMA and Interrupt
Interrupt
Interrupt
Dual floppy disk; disk;
diagnos.built-in
Yes
DMA and Interrupt
Interrupt
Interrupt
Dual floppy disk; disk;
dia9nos.built-in
Yes
DMA and Interrupt
Interrupt
Interrupt
Dual call. tape unit;
disk diag. built-in
Yes
Yes
Combination of software and firmware
Download from host
None
Combination of software and firmware
Internal self-load
Configuration tape
generator
Software and firmware
Comb. firmware/software
IPL method
Additional software supported
Downline/int. self-load
Configuration tape
generator
Internal self-load
Configuration tape
generator
User programmability
Yes
Software separately priced
All
Yes; via user-selected
parameters/programs
Utilities plus X.25
User-selected parameters; programs
Utilities plus X.25
Yes, via user-selected
parameter programs
Utilities plus X. 25
98%
5%
5%
48,648
483
1,403 (3-yr. leasel
12,000 and up
Contact vendor
Contact vendor
6,795
Contact vendor
Contact vendor
16,995
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
157,478
1,540
5,093 (3-yr. lease)
144,145
Contact vendor
Contact vendor
27,925
Contact vendor
Contact vendor
234,165
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
January 1983
Info. not available
Control Data Corp.
Contact vendor
October 1980
Infor. not available
DCA, third party
Contact vendor
1983
Info. not available
DCA, third party
Contact vendor
December 1984
Infor. not available
DCA, third party
Predecessor was 2550
product, first shipped
in 1976.
Supports host selection, port contention,
full line and modem
control facilities;
handles up to 44 highspeed trunk lines;
symmetric multi-proc.;
supp. up to 23 Z80As.
Supports host selection, port contention,
full line and modem
control facilities.
Functions with 1 to 4
trunks.
Diagnostics plus error
checking; X.25 gateway
interface; advanced
features software; full
transparency, data concentration; host select
ion, and camp-on network management.
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
25%
© 1985 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1985
~.
./
C13-010-119
Processors
Communications Processors
(
GTE Telenet
TP4000 Series·
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Honeywell
Information Systems
Datanet 8
ICOT Corporation
CrystaLink 254
ICOT Corporetion
CrystaLink 257
Most vendors
Honeywell DPS 88, DPS
8, and DPS 7
ICOT CrystaLink 254
ICOT CrystaLink 257
Packet switch
Does not apply
128
None
Yes
128
Yes
No
No
No
X.25 virtual circuit
switching
Yes
4
4
Yes
Yes
4
Yes
No
Yes
Yes
Honeywell DSA (ISO)
Yes
No
8
3270 BSC, SNA/SDLC
Yes
8
Yes
No
Yes
Yes
SNA, BSC, NCR
Yes
No
28
3270 BSC, SNA/SDLC
Yes
28
Yes
No
Yes
Yes
SNA, BSC, NCR
128
48
12 to 28
56K
None
128
Load-dependent
Load-dependent
56K
Load-dependent
8(all sync)
28
28 (all sync)
19.2K bps
28
Yes
Yes
Yes
Yes
Yes
Parity, LRC, CRC
110 to 1200 bps
Yes
Yes
Yes (by host program)
Yes
No
No
Yes
Yes; 110, 300, 1200 bps
Yes; optional, variable
Yes
No
Yes
Yes
Yes
Yesa
No
No
Yes
No
Yes
Yes
Yes
Yes
No
No
MOS technology 6502B
8
256K
Info. not available
Datanet 8 (Honeywell)
16
1536K
Byte
Multi-Intel 8088
128K bytes
128K bytes
Byte
Intel 8088
128K bytes
128K bytes
Byte
Interrupt and DMA
None
None
GTE Telenet NCC
Async. bus
Async. bus
Async.bus
Console, diskette
Interrupt
Mail box
Yes
Yes
Yes
Yes
Combination of software and firmware
Downline load from NCC
PAD support
Combination of software and firmware
Host, local, or VIP
Additional on host for
administration and
control
Firmware
Firmware
Download from host
No
Download from host
No
Yes, via user-selected
X.3 parameters
All
Yes, via user-selected
parameters
All
User selected parameters
No
User selected parameters
No
100%
100%
100%
Software is customer
installable
37,000-49,500
215-300
GTE Telenet tariff
42,565
259
1,432 (5-yr. lease)
-
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
76,500-157,200
495-995
GTE Telenet tariff
210,465
1,138
7,615 (5-yr. lease)
-
-
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Yes
Mid 1978
Contact vendor
Sorbus
Yes
Info. not available
Over 1000
Honeywell
-
No
1981
No
1981
ICOT, third party w/NCR
ICOT, third party w /
NCR
2780/3780 BSC emulation
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
'Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
Multiple Microprocessor
Line Card (LPU), common
logic redundancy and
power supply supported;
performs virtual circuit switching; auto.
virtual circuit recovery /rerouting. "1984
-
-
Host console
5200 and up
15,000
IBM 2780/3780 BSC
emulation.
Interrupt
Mail box
-
Host consQle
7,2ooahd up
-
30,000
-
J
APRIL 1985
© 1985 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-120
Processors
Communications" Processors
Infotron
990NP
Network Processor
SUPPLIER AND MODEL
IBM
3705-80
Models M81
through M83
IBM
3705-11
Models E1 throu9h L4
COMPUTER SYSTEMS INTERFACED
Manufacturer.s and Models
-
IBM S/370, 30XX, and
43XX; 5/360 in 270X
emulation mode only
IBM 5/370, 30XX, and
43XX; 5/370 in 270X
emulation mode only
IBM 5/370 (except models 115 and 125), 303X,
308X, 4331, or 4341
fUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channal-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
None
Over 10 hosts
3270 BSC
Yes
Over 10 hosts
Yes
No
Yes
No
Proprietary
Yes
4
4
270X/370X
Yes
1
No
No
No
No
SNA
Yes
2
2
270X/370X
No
Does not apply
No
No
No
No
SNA
Yes
8
6
270X and 3705 with EP
Yes
8
No
No
No
No
SNA
640
From 120 to 640
120
56K bps
None
352
352
32
230.4K
Capacity halved
16
16
Info. not available
57.6K
Capacity halved
256 with·3726 expansion
256 with 3726 expansion
128 with 3726 expansion
230.4K bps
None
Yes
Yes
Yes
No
No
Yes
Yes (Up to 9600 bps)
Yes
Yes
No
No
Yes
Yes
lRC and CRC
Yes, via optional soft.
No
No
No
No
Yes
Yes
LAC and CRC
Yes; via optional soft.
No
Yes
No
Yes
Yes
Yes
lRC and CRC
Yes, via opt. software
No
6502/8086/80186
Proprietary
18
512K
Block
Proprietary
18
256K
Block
Proprietary
18
1M
Block
DMA
DMA
DMA
None
DMA
DMA
DMA
None
DMA
DMA
DMA
FEP console
Yes
No
No
Yes, up to 150 meters
(492 feet)
Software
Software
Software
IPL method
Additional software supported
Combination firmware &.
software
EEPROM
Does not apply
Download from host
NCCF, NPDA
Download from host
NCCF, NPDA
Internal self-load
NCCF, NPDA, ACF/NCPPEP, EP/3725
User programmability
Yes, via console
Yes
Yes
Yes
Software separataly priced
Some
Yes
Yes
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
'Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code ~onversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word Size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
" Communications operating software:
Operating system implemented in
Approx. proportion of currently installed
systems supplied as turnkey systems
-
-
Does not apply
0
DMA and Interrupt
Does not apply
Does not apply
Console/diskette
Yes
None
20,000
Contact vendor
Contact vendor
38,230 (El)
147
1,635 (2-yr. lease)
36,600 (M81)
219
1.465 (2-yr. lease);
1,721 (rentall
32,000
190
1,390 (rental)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
100,000
Contact vandor
Contact vendor
107,040 (L4)
447
6,290 (2-yr. lease)
75,000
213
3,260 (rental)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
.Serviced by
No
1982
2,000
Infotron
Yes
August 1976
50,000
IBM
52,600 (M83)
239
2,265 (2-yr. lease);
2,661 (rental)
Yes
August 1981
Info. not available
IBM
COMMENTS
I'
None
25%
None
PRICING AND AVAILABILITY
Minimum configuration, includin9 all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
"'\
/
IBM
3725
The 990NP provides adaptive routing; comprehensive network management features; bisync emulation (remote
polling); X.25 gateway
support; Async/BSC/BOP/
SDLC support.
© 1985 OATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
No
1983
Info. not available
IBM
HONE Configurator
CF-3725 should be
consulted for actual
number of operable
lines, depending on
line speeds, protocols,
3 other variable
factors.
APRIL 1985
,/'
I
"-
/
C13-010-121
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Lemcom Systems
Distributed Network
Processor Series
Lemcom Systems
CMC-4
Lemcom Systems
CMC-8
Lemcom Systems
CMC-32
5/360, IBM 5/370,
30XX, 43XX, and compatibles
IBM 5/360, 5/370,
30XX, 43XX, and compatibles
IBM S/360, 5/370,
30XX, 43XX, and compatibles
IBM S/360, 5/370, 30XX,
43XX, and compatibles
Yes
1
1
270X, 370X, EP
No
Does not apply
No
No
No
No
Does not apply
Yes
1
1
270X, 370X, EP
No
Does not apply
No
No
No
No
Does not apply
Yes
1
1
270X, 370X, EP
No
Does not apply
No
No
No
No
Does not apply
Yes
64
64
270X, 370X, EP
Yes
64
Yes
Optional
Yes
Optional
DMMA
4
4
3
56K
None
8
8
6
56K
None
32
32
24
56K
None
6500
1500
250
57.6K
Capacity halved
No
No
No
Optional
Optional
LRC and CRC
Optional-300, 1200
Yes
No
No
No
Optional
Optional
LRC and CRC
Optional-300, 1200
Yes
No
No
No
Optional
Optional
lRC and CRC
Optional-300, 1200
Yes
Yes
Yes
Yes
Optional
Optional
LRC and CRC
110 to 19.2K bps
Yes
Motorola 6800
8
40K
Byte
Motorola 6800
8
80K
Byte
Motorola 6800
8
320K
Byte
Motorola 6809
8
15M
Byte and block
Interrupt
None
None
FEP console
Interrupt
None
None
FEP corisole
Interrupt
None
None
FEP console
Yes
Yes
Yes
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console and bubble
memory
Yes
Firmware
Firmware
Firmware
Software
IPL method
Additional software supported
Internal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
Self-/manual-/down-Ioad
Channel prog. simulator
& prob. determin. aids
User programmability
User-selected
parameters
Utilities only
Yes, via user-selected
parameters
Utilities only
Yes, via user-selected
parameters
Utilities only
Yes, via user-selected
parameters
All
None
None
None
25%
14,000
Contact vendor
Contact vendor
16,000
Contact vendor
Contact vendor
20,000
Contact vendor
Contact vendor
25,000
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental. $
20,000
Contact vendor
Contact vendor
30,000
Contact vendor
Contact vendor
60,000
Contact vendor
Contact vendor
500,000
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Contact vendor
March 1977
330
Various
Contact vendor
November 1980
65
Various
Contact vendor
March 1979
125
Various
Contact vendor
1981
225
Various
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPOs available
for a fee.
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPQs available
for a fee.
Microprocessor-directed
FEP; front-end poliing and console support available; OEM
discounts.
Distributed MPU FEP; up
to 256 MPUs can be programmed to perform various comm. processing
functions; frOnt-end
polling, dynamic applic. selae., & multiconsole support avail.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $.
Monthly lease/rental, $
COMMENTS
(
APRIL 1985
© 1985 DAr APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-122
Processors
Communications Processors
M/A-COMDCC
CP9000 Series 'I
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Most vendors via serial
interface
M/A-COM DCC
CP9000 Series II
IBM S/370, 30XX,
43XX, and compatibles
Most vendors
No
Does not apply
Does not apply
Does not apply
Ves
No limit
Ves
Ves
Ves
Ves
No
Ves
2
2
270X, 370X EP
No
Does not apply
No
No
No
Ves
VAN
No
Does not apply
Does not apply
Does not apply
Ves (packet switch)
Port dependent
Ves
No
Ves
No
X.25
128
128
128
56K bps
None
640
640
160
64K bps
None
96
70
6
56K
None
8
8
8
9600
None
No
No
No
No
No
No
No
No
Ves
Ves
Ves
No
No
Ves
No
No
Ves, for VAN
Ves
No
X.25/BSC/ASCII
ASCII/BCD
Ves
Ves, 50 to 9600 bps
No
No
Does not apply
Ves
No
Code-transparent
FCS
No
Ves
6502 and Z80
8
4M bytes
Byte
Mult. Intel 186 & 286
16
Over 50MB
Byte, block
Info. not available
Info. not available
Info. not available
Byte
Z80
8
Approx. 60K
Block
DMA and Interrupt
Interrupt
None
Diskette
DMA and Interrupt
DMA
DMA and Interrupt
Diskette, diagnostic
terminal, hard disk
Yes
Interrupt
DMA and Interrupt
None
None
Yes
Software
From host/diskette
Assembler & LOGOS
compilers & linker
system diagnostics
Comb. of software and
firmware
Downline, loc. disk load
X.25 packet netwrk w /
control centr., prog.
dev. and diag. tools
User programmability
User created
programs
All
Yes, via user selected
parameters & programs
All
Software separately priced
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
Memotec Data Inc.
MPAC 2500'
Most vendors via
communications
interface
N
No
Does not apply
Does not apply
Does not apply
Ves
No limit
Ves
No
Ves
No
X.25
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
Memorex
Communications
Group 1270 Terminal
Control Unit
Console w/VANS
No
Async. terminals
Remote configuration
Firmware
Software (EPROM)
Internal self-load
None
Internal self-load
Diagnostics
No
Yes
User-selected parameters
Options only
All
75%
All
None
Approx. 30,000
Application dependent
Offered as options;
contact vendor
Contact vendor
Contact vendor
Contact vendor
14,900
126
543 mo. (3-yr. lease)
8,060
60
Not available
Approx. 200,000
Application dependent
Offered as options;
contact vendor
No
1977
600
M/A-COM DCC
Contact vendor
Contact vendor
Contact vendor
45,000
250
1,450 (3-yr. lease)
10,590
60
Not available
Contact vendor
1984
No
1970
2,100
Memorex
Communications features
and functions programmable by user.
Compo Netwrk Contr. Sys Hard-wired data
avail. for managing net
communications conwrk of Series II nodes;
troller.
Pack. Switch. cluster &
pwr supply redun.; onbrd encryp. (DES) cap.;
dynamic virtual circuit
routing; user acc. cont
rl., acct. & data coli.
No
1981
Info. not available
Memotec and distrib.;
Honeywell; Abbex.
'1984 information.
-
M/A-COM
© 1985 OAT APRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1985
C13-010-123
Processors
Communications Processors
Micom
Micro800/X.25
SUPPLIER AND MODEL
Micom
Micro 860
NCR Comten 3650
NCR Comten
5620
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most
Most vendors
IBM S/370, 30XX, 308X,
43XX, and compatibles;
custom
IBM 360/370, 303X,
308X, 43XX, compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does not apply
Does not apply
Does not apply
Yes
24
Yes
No
No
No
X.25
No
Does not apply
Does not apply
No
Yes
Does not apply
Yes
No
No
No
None
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
No
No
No
No
SNA/CNA
Yes
2
2
Yes
Yes
1
No
No
No
No
SNA/CNA
24
24
Info. not available
19.2K bps
None
8
8
8
19.2K bps
None
128
128
32 to 128
230.4K
None
32
32
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
110 to 9600 bps
No
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Z80A; Z80B
8
64K
Byte
Z80B
8
64K bytes
Byte
Proprietary
32
1M
Byte or block
Proprietary
32
1M to 4M
Byte
Interrupt
None
None
Interrupt
Interrupt
None
None
DMA
DMA
DMA
Diskette, cassette
DMA
DMA
DMA
Hard disk
Yes
Yes
Yes
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Async terminals
Yes
-64K bps
None
Yes
Firmware
Firmware
Software
Software
IPL method
Additional software supported
Int. self/downline load
None
Internal self-load
Does not apply
See comments
NDP, CLSS1, Codel 59
-
User programmability
User-selected parameters
Options only
Yes, user selected
parameters
None
Yes, via user-sel. par.
& user programs
All
Yes
Software separately priced
Approx; proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
All
All
All
NDP, CLSS1, Codel 59
All
-
2,050
Info. not available
Info. not available
2,550
Does not apply
Does not apply
41,000
261
1,250 (2-yr. lease)
22,000
Contact vendor
Contact vendor
6,250
Info. not available
Info. not available
3,250
Does not apply
Does not apply
103,300
559
3,280 (2-yr. lease)
54,000
Contact vendor
Contact vendor
No
1982
2,000
Independent distributors
Does not apply
1983
No
March 1975
1,800
NCR Comten
Contact vendor
4th quarter, 1985
-
Independent, distributors
Interconnects 4 or 8
Micro 800/2 composites.
Manual load from
diskette and download
from host.
-
NCR Comten
Handles application
switching, routing,
polling, automated dial
ing, error recovery, &
multiplexing for up to
32 lines. Runs all of
NCR Comten's networking
products.
,
APRIL 1985
© 1985 OAT APRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-124
Processors
Communications Processors
NCR Cornten 3690
Models A8-E8
;
.. SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O. back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenanca, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
NCR Comten 3690
Model T8
NTX Communications
Corporation
NTX 3800-Model 2
NCR Comten
721-11
IBM S/370, 30XX, 308X, IBM S/370, 30XX, 308X, NCR JRX, VRX Systems
43XX, and compatibles;
43XX, and compatibles
custom
IBM and plug-compatible mainframes
Yes
8
8
270X/370X, ACF/NCP
Yes
Unlimited
Yes
Yes
No
No
SNA/CNA
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
Yes
No
No
No
SNA/CNA
Yes
2
2
No
Yes
Unlimited
Yes
No
No
No
CNA
Yes
4
2
CTCA
No
Does not apply
No
No
No
No
SNA
512
512
128 to 512
230.4K
None
128
128
32 to 128
230.4K
None
99
52-99
10 at 56K
56K
None
8
8
8
6.312M
Halved
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
No
No
No
No
Yes
No
Yes
No
Does not apply
No
No
No
CRC
No
No
Proprietary
32
4M
Byte or block
Proprietary
32
1M
Byte, block, or file
Proprietary
16
1,024K
Byte and block
Info. not available
Info. not available
96K
Block
DMA
DMA
DMA
Diskette
DMA
DMA
DMA
Diskette
DMA
Yes
Yes
No
Interrupt
None
None
Internal diag. processor
Yes
Combination of software
and firmware
See comments
NDP, CLSS1, Codel 59
Combination of software or firmware
Load from host/ disk
NDP, CLSS1, Codel 59
Load from cassette
No
Proprietary host-based
software
Info. not available
None
Yes, via user-sel. par.
& user programs
All
Yes, via user-created
programs
All
No
Configuration macros
All
All
All
All
All
Info. not available
105,000
415
3,600 (2-yr. lease)
66,000
366
2,257 (2-yrJease)
46,000
370
1,637/yr.
400
300,000
1,700
8,500 (2-yr. lease)
108,500
518
2,935 (2-yr. lease)
95,000
577
3,500
240,805
628
8,902
No
June 1978
No
January 1980
NCR Comten
NCR Comten
Yes
1976
Approx. 1,200
NCR Comten
No
Info. not available
Info. not available
NTX
-
-
-
DMA
Cassette
Software
Manual load from
diskette and download
from host.
© 1985 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
163,340
5,709 (1-year lease)
.
Supports multiple
1.544M bps cross-domain
links over terrestrial
or satellite facilit.
Supported by ACF /VT AM
with NTX Cross Domain
Control Program; full
circuit redundSncy.
APRIL 1985
\
./
C13-010-125
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NTX Communications
Corporation
NTX 3BOD-Model 1
Paradyhe
Pix/Pixnet
Paradyne
Pixnet-XL
Periphonics
T-Comm*
IBM and plug-compatible mainframes
IBM S/370, 30XX,
43XX, and compatibles
IBM/370, 43XX, 30XX,
and compatibles
Most major vendors
Yes
4
2
270X, 37X5 EP
No
Does not apply
No
No
No
No
BSC
Yes
1
Multiple
Does not apI";·
Yes
Multiple
Yes
No
Yes
Yes
None
Yes
2
Multiple
Does not apply
Yes
Multiple
Yes
No
No
Yes
OSI-modeled
Yes
12 per processor
12 per processor
370X,3B03,3272,2B4B
Yes
7
Yes
Yes
Yes
Yes
SNA
8
8
8
6.312M
Halved
None
Application-dependent
3 full-duplex
56K bps
None
None
Application dependent
16 full-duplex
2.048M bps
None
520
520
520
56K
None
No
Does not apply
No
No
No
CRC
No
No
Yes
Yes
Yes
Async/3270; PC/3270
ASCII/EBCDIC
Yes
Yes
Info. not available
Yes
Yes
No
Async/3270, PC/3270
ASCII, EBCDIC
CRC
No
No
No
Yes
Yes
Yes
Yes
Yes, all industry std.
With specified modems
Yes
Info. not available
Info. not available
96K
Block; byte
Proprietary
16
128K
Byte
Proprietary
16 bit
2M
Block, byte
DEC PDP-11
16
64K to 5M
Byte or block
Interrupt
None
None
Internal diag. processor
Yes
DMA and Interrupt
None
DMA and Interrupt
Mag. tape; console
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Diskette
Interrupt
DMA and Interrupt
DMA and Interrupt
Yes
Yes
Host-based software
Info. not available
None
Combination software,
firmware,. hardware
Intern. self-load, man.
Utilities
Combination firmware/
software
Internal
Utilities
User programmability
Access method macros
Self-configuring
No, vendor supported
Software separately priced
None
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
None
CRT, printer, mag. tape
Yes
Proprietary
From host or diskette
Network Definition
Utility, Voice Dialog
Utility
Yes, via user-selected
parameters, programs
All
All
Info. not available
All
145,730
474
5,754 (l-year lease)
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
50,000
Approx.4OO
Variable
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
233,005
730
9,347
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
250,000
2,000
Variable
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
Info. not available
Info. not available
NTX
Contact vendor
April 1976
Over 5,000
Paradyne
-
No
December 1984
No
1980
500
Peri phonics
Supports multiple
1.544M bps links using
IBM BSC; full circuit
redundancy.
Pix/Pixnet permits remote peripherals and
CRTs to access multiple
IBM hosts and applications as locallv ettac.
devices without remote
TP software and with no
software maintenance.
Pixnet-XL allows remote
peripherals, CRTs, IBM
3800 &. Xerox 8700 laser
printers, and other per
-ipherals to access IBM
hosts as locally
attached devices. No
host or TP software is
required.
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1985
@
80%
Paradyne
1985 DAT APRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
Data/voice on same
line, voice response
system; network interface; nodal; solid
state audio; integrated serv;ces. 1984 infonmation
C13-010-126
Processors
Communications Processors
(
Periphonies
Telemarketar*
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Periphonies
CommStar*
Periphonies
VoiceBox·
3780/3270; most major
vendors
Most major vendors
Most major vendors
Yes, dstrb, app. proc.
Info. not available
Info. not available
Info. not available
No
Does not apply
Yes
Electronic orders
Yes
Yes
No
Yes
3
3
Most std. interlaces
Yes
3
No
No
Yes
No
SNA
Yes
Yes
12/processor
3
12/processor
3
370X;3803; 327X; 2848 Yes
Yes
Yes
7
3
Yes
Optional
Yes
No
Yes
Yes
Yes
Yes
SNA
SNA
20
20
20
9.6K
None
78
78
78
9600
None
520
520
520
9600
None
32
32
32
9600
None
No
Yes
No
Yes
Yes
Industry standards
No
If selected
No
Yes
Yes
Yes
Yes
All industry standards
No
Yes
Yes
Yes
Yes
Yes
ASCII/EBCDIC
Industry standard
With specified modems
No
Yes
Yes
Yes
Yes
Industry standard
With specified modems
Multi 32 bit and 16 bit
32 + 7 1
1-2M
Internal 2 or 4 bytes
LSI 11/23; PDP-11S
16
64-256KB w/Peripacs
Byte or block
Daul 32 bit and 16 bit
32 bit ECC; 16 bit ECC
Up to 3M
2 or 4 bytes
LSI 11/23
16
128K
Byte or block
Interrupt and DMA
DMA
DMA and Interrupt
CRT; ptr.; tape; disk
Interrupt
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Console; prtr.; modem;
disk;diskette;mag. tp.
Yes
Yes
Yes
Yes
Int~rrupt
Yes
Yes
Proprietary software
Real-Time, UNIX-based
Proprietary software
Hard disk
Network Definition
Utility, Voice Dialog
Utility; Rei. DBMS
Download or disk load
I/O Gen, Pave; Param
Self-load from disk
Network def; A TM
switching; DBMS; highlevel langs.
EPROM based
None
User programmability
Yes
Yes'
All
Yes, voice dialog
& basic edit functions
All
Yes
Software separately priced
All
All
100%
75%
Info. not available
75%
60,000
Approx.600
Variable
25,000
250 min., variable
Variable
75,000
400
Variable
20,000
Approx.200
Variable
90,000
Contact vendor
Variable
150,000
250
Variable
300,000
2,500
Variable
50,000
250 minimum
Variable
No
1983
No
1981
200
Periphonics
-
No
1984
No
1983
Maximum practical configuration:
Purchase price,$
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
-
Periphonics
Electronic order entry
system w /voice response
and handheld terminal
support. 1984 information
Handles data and voice
interchangeably via a
single I/O port; can
concentrate, convert
protocol & code, and
serve as a network
node. ·1984 information .
Periphonics
A user-programmable
comm. switching system
w /extensive library of
terminal and network
interlaces. ·1984 information
©. 1985 .DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION. PROHIBITED
/
DMA and Interrupt
DMA and Interrupt
UNIX based
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
1<",
Most major vendors
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
.
Periphonies
Voieepae*
".
-'
-
Periphonics
A solid state unit that
can concentrate, convert protocol and code,
serve as a network
node, and provide voice
response. ·1984 information
APRIL 19B5
(
~
..
013-010-127
Processors
Communications Processors
(
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported Ibps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
(
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
.
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Sperry DCP/10
Sperry DCP/20
Sperry DCP/40
Tandem Computers
6100 Communications
Subsystem'
Sperry Series
1100, Series 90
Sperry Series
1100, Series 90
Sperry Series
1100, Series 90
Tandem NonStop II and
NonStop TXP
Yes
1
1
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Yes
4
3
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
Yes
16
16
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
Yes
2 per 15 lines
2 per 15 lines
None
Contact vendor
Does not apply
Contact vendor
Contact vendor
Contact vendor
Yes
Contact vendor
6 sync, 24 async.
6 sync, 24 asyne.
6 sync, 24 async.
Info. not available
Info. not available
47 sync; 192 async.
47
47
64K
None
255 sync; 1023 async.
255
140
64K
None
360
360
360
56K
No effect
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Yes
Yes
Yes
Yes
Yes
Yes
Yes, 110 to 19.2 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes 110 to 19.2K bps
Yes
No
Contact vendor
Yes
Contact vendor
Yes
Yes
No
No
Sperry DCP /20
16
512K
Block
Sperry DCP /40
16
3.5M
Block
Proprietary
DMA
DMA
DMA
Console, disk, diskette
mag. tape
Yes
DMA
DMA
DMA
Console, disk, mag.
tape
Yes
DMA
DMA
DMA
Integrated with system
Combination software
and firmware
Host download & disk.
File transfer
Combination software
and firmware
Host download & disk.
File transfer
not
not
not
not
not
not
not
not
not
not
not
not
not
not
not
not
available
available
available
available
available
available
available
available
available
available
available
available
available
available
available
available
Sperry DCP /10
16
512K
Info. not available
Info. not available
Info. not available
Info. not available
Info. not available
Info. not available
Info. not available
8
64K per line
Block
Contact vendor
Software and firmware
IPL method
Additional software supported
Info. not available
Info. not available
User programmability
Info. not available
Software separately priced
Info. not available
Yes, via user-created
programs
All
Yes, via user created
programs
All
None
None
10%
20,000
100
450 IS-year lease)
47,350
245
1,080 (5-year lease)
103,600
590
2,340 (5-year lease)
25,840
128
Does not apply
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
40,000
220
990 IS-year lease)
135,000
700
2,800 (5-year lease)
480,000
2,500
10,000 (5-year lease)
Contact vendor
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
December 1983
Info. not available
Sperry
No
January 1982
Info. not available
Sperry
No
September 1979
Info. not available
Sperry
Does not apply
April 1983
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required f.or basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Contact vendor
All
None
COMMENTS
Tandem
·1984 information .
.APRIL 1985
Download from host
Contact vendor
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075' USA
REPRODUCTION PROHIBITED
· C13·010-128
Processors
Comr:nunications Processors
i/
Telefile Computer
Products Telepec
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufactu~ers and Models
Telematics VAX
Front-end Processor
Telematics
Telematics
Series 1
NET~5
Standalone or Telefile
TSO Series
DEC VAX 11/730,
11/750, and.ll/780
systems
Most
Most
Ves
8
None
Ves
12
Ves
Ves
Ves
No
X.25
Ves
4
4
No
Ves
4
Yes
No
Yes
Ves
None
No.
Does not apply
Does not apply
No
Ves (packet switch)
4
No
No
No
Ves
None
No
Does not apply
Does not apply
No
Ves
4
No
No
No
Ves
None
280
280
280
19.2K bps
None
400
80 to 400
80
64K
Halved
800
160 to 800
160
64K
Halved
800
160 to 800
160
64K
Halved
Ves
Ves
Ves
Async to 3270 BSC/SDLC
ASCII to EBCDIC
Parity, LRC and CRC
50 to 9600 bps
Ves
Ves
Ves
Ves
No
No
Ves
50 bps-19.2K bps
Ves
Ves
Ves
No
No
Ves
50 bps-19.2K bps
Ves
Ves
Ves
No
No
Ves
50 bps-19.2K bps
M68000
16
64K Bytes MOS RAM
Byte or block
MC68000/Telematics Sl
32
16M
BlocJ<
MC68000/Telematics Sl
32
16M
Block
MC68ooo/Telematics Sl
32
16M
Block
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
FEP console, disk,
diskette, mag tape
Ves
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Ves
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Ves
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Ves
Combination of software 8t firmware
Int. selfload, dskt.
Program dev. software,
utilities
Software
Software
Software
Manual from disk
Pascal; C
Disk or remote port
Pascal; C
Disk or remote port
Pascal; C
Ves, via user.selected
parameters
Special applications
only
80%
Ves
Ves
Ves
Ves
Ves
Ves
None
None
None
17,100
114
570 (3 yrs.)
42,950
455
None
45,900
275
None
26,000
150
None
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
18,810
126
627 (3 yrs.)
171,800
1,820
None
220,000
1,320
None
185,000
1,110
None
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
October 1980
40
Telefile
No
October 1983 .
Info. not available
Telematics
No
February 1984
Info. not available
Telematics
No
December 1983
Info. not available
Teiematics
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of. active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
8
I',
Provo mode for mult.
CCITT X.25 pub. or
priv. packet netwk.;
Sup. all ASCII based
hosts and terminals;
interface to SNA/SDLC
networks.
© 1985 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
/
(
APRIL 1985
/
C13-010-129
Processors
Communications Processors
(
Tri-Data
Netway 200
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major vendors
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does
Does
Does
Yes
4
Yes
No
No
Yes
SNA;
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
not apply
not apply
not apply
Tymnet
Micro-Engine
Most major vendors
Most major vendors
No
Does not apply
No
-
Tymnet
Engine
Most major vendors
No
-
Packet switch
Depends on config.
Yes
No
No
Yes
Tymnet proprietary
(Tymnet II)
Packet switch
Depends on configu.
Yes
No
No
Yes
Tymnet proprietary
(Tymnet II)
Packet switch
Depends on config.
Yes
Yes
No
Yes
Tymnet proprietary
(Tymnet II)
6
6
6
56K
None
Depends on configur.
Depends on configur.
Depends on configur.
19.2K bps
Increased
Depends on configur.
Depends on configur.
Depends on configur.
74K bps
Increased
Depends on configur.
Depends on configur.
Depends on configur.
74K bps
Increased
Yes
Yes
Yes
Yes
ASCII to EBCDIC
Parity; LRC; CRC
No
No
Yes
No
Yes
Any supported/any sup.
ASCII/2741/Baud./EBCD
Parity; CRC
Yes
Yes
Yes
No
Yes
Any supported/any sup.
ASCII/2741/Baud./EBCD
Parity; CRC
Yes
Yes
Yes
No
Yes
Any supported/any sup.
ASCII/27 41 /Baud./EBCD
Parity; CRC
Yes
Yes
Z80A
8 bits
256K
Byte
Proprietary
32
512K
Does not apply
Proprietary
32
1M
Does not apply
Proprietary
32
2M
HaH;word
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Diskette
DMA and Interrupt
Does not apply
Does not apply
None
DMA and Interrupt
Does not apply
Does not apply
None
Yes
Yes
Yes
DMA and Interrupt
DMA
DMA
Disk; mag. tape; console
Yes
Software
Microcode
Microcode
Microcode
Download from Engine
Switching
From disk or tape"
Yes
Yes
Yes
X.25
Rem. download or manual Download from Engine
CP/M, Macro 80, Word- Validation utilities;
star, Plink II
operations utilities;
acctg. utilities; Net.
mgt. and control; msg.
Yes
Yes
User programmability
Tymnet
Mini-Engine
All but O.S.
Utilities
Utilities
Utilities
9096
All
All
All
7,920
Info. not available
Info. not available
10,000 (approx.)
Contact vendor
Contact vendor
40,000 (approx.)
Contact vendor
Contact vendor
70,000 (approx.)
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
15,000
Info. not available
Info. not available
16,120 (approx.)
Contact vendor
Contact vendor
70,000 (approx.)
Contact vendor
Contact vendor
130,000 (approx.)
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Info. not available
April 1983
120
Tri-Data
No
1983
200
Tymnet
No
1981
210
Tymnet
No
1978
850
Tymnet
Supports networks up to
50 nodes @ 32 devices
per node.
Engines sold as
components of complete.
custom networks
compatible with
Tymnet's public network.
Engines sold as
components of complete,
custom networks
compatible with
Tymnet's public network.
Engines sold as
components of complete.
custom networks
compatible with
Tymnet's public network.
"Or downline from other
engine
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1985
© 1985 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-01.0:130
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no: of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps'
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, If all lines are full-duplex
!cOMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications Ynes'
'
Mass storage
Other peripherals
I/O, back-up. and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating 'system implemented in
Westinghouse Canada
Electronic Systems
Division
W1655/1656*
IBM PARS, Sperty
Uniscope 100 & UTS20
No
Does not apply
Does not apply
Does not apply
Yes
4
No
Yes
No
Yes
None
16
16 at 4800; 8 at 9600
None
19.2K
Capacity reduced
No
No
No
U1OO/P1024
IPARS/P1024
Yes
No
No
Intel 8085 (dual)
8
32K
Block
Interrupt
DMA and interrupt
Interrupt
Yes
Yes
Firmware
IPL method
Additional software supported
Download, EPROMs
Info. not available
User programmability
,No
Software separately priced
Specials
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for baSic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
25%
12,000
Info. not available
Third party
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
20,000
Info. not available
Third party
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
,;
Serviced by
No
September 1976
300
Third party
COMMENTS
Remote line polling;
·1984 information.
: 1 . - - - -_ _ _ _ _ _ _ _-'-_ _ _ _-..I..-._ _ _ _----L_ _ _ _ _ _....;;,1.,-_ _ _- - - - I
© 1985 DATAPRO RESEARCH CORPORATKlN. DEL~AN. NJ 08075 USA
REPRO~CTIO'" ,PROHIBITED
APRIL 1985
•
C13-010-101
Processors
Communications Processors
A communications processor is a multifunctional, program-controlled, digital computer dedicated to communications and able to serve as a control point, or node, in a
data communications network.
In general, such a processor performs one or more of three
major functions: front-end processing, intelligent switching, and concentration. A front-end processor serves as a
locally attached peripheral device to one or more large
computers dedicated to applications processing, relieving
them of the overhead involved in message handling and
network contro1. An intelligent switch routes messages
among the network's various end points and participates in
the network's control and management either under the
control ofa master (usually front end) processor or as a peer
of other intelligent switches. A concentrator controls a
community of terminals, clusters of terminals, or distributed applications processors; gathers, queues, and multiplexes their transmissions onto one or more high-speed
network trunks; and participates in the network's control
and management, again either under the direction of a
master processor or as a peer of other concentrators and
switches.
Each of the three major functions is a combination of some
or all of the following subfunctions:
• physical transmission and reception of data
• data buffering and queueing
A communications processor is a multifunctional
device that may serve as a front end to a mainframe. as an intelligent switch. or as a remote
concentrator. This report describes these broad
functions in detail. and also covers communications processor design. the place of the communications processor in modern network architectures. the evolution of the communications
processor. the general advantages and restrictions of today's communications processors. and
the state of the communications processor
marketplace.
The rapid evolution of microprocessor-driven. single-function devices such as protocol converters.
terminal controllers. and X.25 PADs has caused
Datapro to sharpen its definition of a communications processor to include only truly multifunctional. intelligent devices dedicated to networking. Look for information on Conversion Systems
and Terminal Controllers behind Tab C23 in Volume 2 of DATAPRO REPORTS ON DATA
COMMUNICATIONS.
This report also includes comparison charts outlining the major characteristics of 68 true communications processors from over 30 vendors. and user
ratings from 536 users reporting on an installed
base of 2735 communications processors.
• multiplexing
• gather and recording of network performance and traffic
statistics.
• message framing and unframing
• control of transmission errors
The most sophisticated communications processors, especially those marketed primarily as front ends by mainframe
computer vendors, can perform all of these tasks. Indeed,
in a large, complex network governed by one or more
mainframe hosts, a front end must perform all but the last
three in the normal course of its operations. Front-end
processing is the most complex task a communications
processor can perform.
• message sequencing
• protocol conversion
• message pacing and flow control
• message or packet assembly and disassembly
• route selection
• session establishment and disconnection
• formatting of data for use by specific host or terminal
applications
(
-\
/
• reporting and logging of device or transmission errors or
failures
• fallback switching in case of host, device, or transmission
line failure
APRIL 1984
Intelligent switching is slightly less complex, since the
communications processor acting as a dedicated switch
need not carry on a running dialogue with a host computer,
and is not responsible for the end-to-end establishment and
disconnection of sessions. Still, an intelligent switch, in
normal operation, must perform- all but the last five basic
functions. An intelligent switch differs from a simple
switch, such as a port selection and contention device,
because it must monitor the network's traffic and performance, either under the control of a master processor
(usually a front end) or as a peer among other intelligent
switches and concentrators, and change its behavior, notably the routing and pacing of messages, according to the
information it receives. A simple switch simply establishes
© 1984 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
t>
C13-010-102
Processors
Communications Processors
Front-end
Processor
r-------j------i
Concentrator
Intelligent
Switch
Front-end
Processor
Concentrator
Intelligent
Switch
I------~i------i
Concentrator
Front-end
Processor
Figure 1_ A communications processor canjimction as afront endfor one or more host computers, as an intelligent switching node not attached directly to any applications equipment, or as a remote terminal concentrator_
I> an information path according to instructions it receives
from a user or computer on one end of the connection.
Concentration is the least complex task a communications
processor can perform, and communications processors
acting as concentrators can easily be confused with less
sophisticated, single-function devices such as statistical
multiplexers, protocol converters, packet assembler/disassemblers (PADs), and terminal cluster controllers. Indeed,
with the widespread use of microprocessors and the declining cost of silicon intelligence, many devices at the high
ends of these lines are beginning to approach the functional
breadth of true communications processors. 'Ihe difference
is that true communications processing, concentration included, is a dynamic process involving feedback from other
intelligent devices in the network. Statistical multiplexing,
protocol conversion, and packet assembly/disassembly are
basically static processes that do not change as conditions
change on the network. An intelligent concentrator participates in the control of the network, either under the direction of a master processor or as a peer of other concentrators and switches, receiving status information from the
network and changing its behavioraccordingly:accelerating or withholding transmissions, initiating diagnostic procedures for pathways and devices in its local domain, and
controlling access to the network from its locally attached
devices. Some sophisticated terminal controllers, notably
IBM's 3274s, can perform some or all of these functions. A
concentrator differs from a sophisticated terminal cluster
controller by its position in the network's hierarchy: a
concentrator can concentrate data from a number of cluster
controllers, while a cluster controller concentrates data
only from a number of individual terminals. As an example, consider the relative positions in an SNA network of an
IBM 3705 acting as a remote node (concentrator) and an
IBM 3274 within that concentrator's domain. A user can
build an entire network. from intelligent concentrators
communicating with one another as peers, but cannot do
the same with cluster controllers.
COMMUNICATIONS PROCESSOR DESIGN
The basic design of almost all communications processors
follows the same, three-tiered, hierarchical plan-a plan
that they share in general with their close cousins the digital
PBXs, and more generally with a number of other data
communications components.
The device's central processing unit (CPU) sits at the top of
the hierarchy along with its associated main memory; it
controls the.communicationspfocessor's operation according to the rules and parameters of its operating software,
and, in front-end configurations, in conjunction with instructions from the host computer. In general, the CPU
performs the complex or dynamic tasks such as addressing,
route selection, protocol conversion, access control, session 1:>
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
.".
C13-01 0-1 03
Processors
Communications Processors
Host
Computer
Host 1/0 }
Channel
...----, Control and
Maintenance
Panel or
' - - _ - ' Console
Common control'l
Components
Line Bases
Line Sets
1
1
Communications Unes
Figure 2. The diagram shows the hierarchical, bus-based architecture ofa typical communications processor. Such a processor may contain more than one host interface, several I/O processors, and many more line bases. Each line base serves communications lines ofa specific synchronization, speed, and protocol. Each line set serves lines with a specific physical intetface. The modular arrangement of line
bases and line sets on the processor bus allows easy configuration and reconfiguration.
1:> establishment, application-level formatting, and error log-
(.
ging, and delegates the rote operations to subsidiary
components.
controlling the line bases' a,nd host interfaces' access to
main memory. In communications processors with more
than one I/O processor, each I/O processor usually controls
a set complement of storage units or communications lines.
In most communicatiOI.,; processors, some components
operating under the direction of the CPU perform general
functions involving the operation of the whole communications processor, while others perform functions dedicated to specific groups of lines. Among the former are the
host interfaces, the input/output (I/O) processors, the reference clock, and the operator interface. Among the latter are
the processor's line bases and line sets.
The reference clock generates a timing signal used by all
other components of the communications processor. In
many systems, reference timing is a function of the CPU.
Some systems have separate reference clocks for the timing
of signals at different data rates.
Communications processors configured as front ends must
have at least one host interface. The host interface handles
communications between the front-end processor and the
host's byte or block multiplexer, or selector channel. The
host interface buffers data from the front end's CPU,
assembles it into parallel bit streams of a format specific to
the attached host channel, and transmits it up the channel
to the host; for data coming from the host, it performs the
same process in reverse. The host interface's principal
function is conversion of data from the communications
processor's internal word size to that of the host computer.
Some communications processors contain one or more
input/output (I/O) processors that transfer data between
the CPU and attached storage peripherals, such as disk or
tape drives. In some cases, the I/O processors arbitrate
'among the various line bases for access to main memory
and to the CPU, handling interrupts generates by the line
bases or host interfaces to gain the attention of the CPU, or
APRIL 1984
The operator interface allows a human operator to monitor
and control the communications processor and to run
diagnostic tests. In newer and more sophisticated systems,
the operator interface works under software control from a
dedicated console, which usually contains a CRT or similar
display unit and a printer for logging. In most communications processors, the operator interface works through a
front panel that contains a number of manual switches and
indicator lights.
All of the above-mentioned devices perform functions that
are shared among all communications lines; they sit just
below the CPU in the communications processor's internal
hierarchy. On the network side, the "business end" of a
communications processor, the line bases and line sets
complete the hierarchy.
A line base, sometimes called an attachment base, interface
base, or interface module, handles communications at the
Data Link layer between the communications processor I:>
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C1:3-010-104
Processors
Communications Processors
Model 3690 is the largest and most
capable of NCR Comten's IBMcompatible communications processors. The newest models can support up to 4M bytes of main
memory.
I:> and a group of attached communications lines that share a
common synchronization pattern, line speed, and some-times, protocol. Each line base usually contains a dedicated
microprocessor that performs such functions as framing
and stripping, message buffering, message sequencing, synchronization, and error detection under the direction of the
CPU. Most current communications processors accommodate from 8 to 32 line bases, each of which handles from
two to eight line sets.
A line set handles communications at the Physical layer
between its attached line base and from one to eight
communications lines. All the communications lines attached to a given line set must use the same physical
interface at roughly the same data rate. The line set handles
serialization of data and interface-level control signaling.
data communications. In general, there are two kinds of
network architectures: those designed to provide communications among computers and terminals from a specific
vendor, and those designed to provide open communications regardless of the vendor of the communicating devices. Mainframe vendor architectures include IBM's
SNA, Honeywell's DSA, Burroughs's BNA, and Sperry's
DCA. Open architectures include the CCITT's X.25 packet
switching specification and several "transparent" network
schemes marketed by communications vendors. The communications processor is the most important element in
both vendor-specific and open architectures. In the following paragraphs, we will use the International Organization
for Standard (ISO) reference model for Open Systems
Interconnection (OSI) to examine the different roles that
communications processors play in different kinds of network architectures.
All the components of the communications processor com-
municate with one another over a parallel data bus, usually
located along the backplane or a side plane of the processor's cabinet. The physical bus architecture, made popular
in the design of minicomputers, allows for easy installation
and replacement of parts. In a hierarchical architecture
such as that of most communications processors, it also
makes for easy reconfiguration. To replace asynchronous
communications over voice grade lines with HDLC communications over wideband or satellite circuits for a 16-line
segment of a network, a user might need to replace only one
line base and eight line sets, rather than having to swap out
an entire front-end processor. The hierarchical design extends the communications processors functionality over
time and helps to protect the user's investment in the face
of changing technology. Figure 2 shows the hierarchical
configuration of a generalized communications processor.
COMMUNICATIONS PROCESSORS AND NETWORK
ARCHITECTURES
The implementation of network architectures is perhaps
the most important ongoing theme in the development of
In network architectures designed by mainframe computer
vendors, the communications processor functions most
often as a front end, and controls communications in
conjunction with one or more software systems in the host
computer. In general, the front-end processor handles the
Data Link through Session layers of the ISO model, with
host software implementing the Presentation and Application layers. The balance varies from architecture to architecture. In Sperry's DCA the DCP-Series front end has
control over many Presentation-layer functions, while in
IBM's SNA, the host's access method, along with software
residing in the 327X terminal controllers, handles communications down to the Session layer, with the 37XX front
end acting almost as a channel-attached packet switch. The
range of control assigned to front-end processors in other
mainframe architectures varies between those extremes.
In all the mainframe architectures, the same communications processor models that serve as front ends can also _
function as intelligent switches and as remote concentrators. In these functions, the communications usually ap- 1:>
© 1984 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
C13-010-105
Processors
Communications Processors
t>
pear in smaller configurations than in the front-end role.
Communications processors working in mainframe architecture can also perform another important function in
conjunction with any of the other three, that of an intelligent gateway. In this application, the communications
processor provides the interface between the mainframe
network and communications facilities outside the architecture, particularly public, packet-switched data networks
using the X.2S protocols.
The function of a communications processor differs between the two kinds of open architectures. In a full-scale
open architecture such as X.2S, the communications processor serves entirely as an intelligent packet switch, implementing the Data Link through Transport layers through a
uniform set of complementary protocols. Designed specifically for public data networks, the X.2S protocols provide
ultimately for the establishment of virtual circuits, or logical paths through the network, for devices from any vendor. Communicating devices, computers or terminals, at
either end of the virtual circuit must handle the Session,
Presentation, and Application layers according to their own
protocols. Since, in a public network, the network provider
is responsible for network management, the X.2S communications processors in such a network carry a heavy load
of access, error, and class-of-service control, along with
many provisions for statistical recording of traffic and
usage data that can be sorted by individual user account.
Communications processors, such as GTE Telenet's
TP4000, designed to function as switches in public networks are the likeliest to support high-capacity attached
storage devices such as disk and tape drives.
Communications processors operating in full-scale X.2S
configurations seldom perform a gateway function. The
user must provide compatibility with the network's standard protocols, either through an X.2S software package
that resides in a participating host or its front-end processor, or through a packet assembler/disassembler (PAD)
that handles the Physical and Data Link layers of the
architecture.
Transparent architectures are a relatively new development offered by vendors of communications equipment as
a low-cost alternative to mainframe architectures and fullscale X.2S implementations. These architectures are usually stripped-down versions of X.2S without much of the
network administration and class-of-service overhead necessary to operate a public or very large private network. In
these architectures, the communications processor functions primarily as a switching concentrator, providing services at the Data Link, Network, and Transport layers.
Most such concentrators have evolved at the high ends of
lines of statistical multiplexers, adding the crucial routing
and flow control features that qualifY them as communications processors. Some such products offeriintegrated network management functions such as error logging and
performance statistics, but most rely on a separate, complementary network management system to provide these
functions.
APRIL 1984
THE EVOLUTION OF THE COMMUNICATIONS
PROCESSOR
The communications processor as we currently know it
came into being in the mid- to late-1970s, the result of the
merger of several separate developments in both communications and data processing. Its direct ancestors were hardwired communications controllers such as the IBM 270X
and Sperry Univac CCM, relatively unintelligent combinations of large multiplexers and cabling concentrators designed to perform only the basic, rote operations of communications handling. These devices provided a physical
map ofthe network for the host, basically allowing it to find
each physical line in its logical polling sequence and performing simple error notification for the host.
Two developments in the late 1960s provided the technical
base for the modem communications processor: the minicomputer and the ARPAnet. The minicomputer provided
a small, relatively inexpensive, software-controlled machine that could perform any of a number of functions
more efficiently than a mainframe, and incidentally also
provided the bus architecture that gives communications
processors their modularity and flexibility. The ARPAnet,
the first large-scale packet-switched data network, provided
the fundamental design principles for all current data communications architectures. One of these principles was the
intelligent virtual circuit switch, the first functional communications processor.
A later development in minicomputer applications created
the distributed processor, a small computer, dedicated to
part of a larger application, that performed, as one of its
necessary functions, communications with its peers in a
distributed network. Distributed processing contributed
the idea of intelligent communications handling under
software control. Indeed, network architectures from such
minicomputer vendors as DEC and Hewlett-Packard are
applications of later communications developments onto
the framework of distributed processing among
minicomputers.
The lower cost of dedicated processing in small computers
and the increasing cost of mainframe processing power
made the idea of a dedicated small computer to off-load
intelligent communications handling from the mainframe
economically practical. The first intelligent front ends, such
as IBM's 3704, predate modem network architectures, and
to a large extent, made such architectures possible.
In the late 1970s, IBM's SNA and the ISO's OSI model, the
earliest general network architectures, advanced the idea of
data communications as an entirely separate function from
applications processing, and of the network as a physical
entity separate from its participating hosts and terminals.
The best way to implement a physically separate communications function is through a system of small computers
dedicated to communications. Such communications processors could be placed at the front end of the mainframe,
or could function independently as concentrators and
1:>
switches within their respective architectures.
© 1984 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-106
Processors
Communications Processors
t> One further development produced the communications
processor as we know it today: the microprocessor. The
advent of cheap silicon intelligence allows designers to
implement the hierarchical scheme ofthe typical communications architecture in hardware, with dedicated microprocessors performing low-level functions and reporting to
larger and more complex processors at the higher levels.
Indeed, some line bases in present-day communications
processors are programmable, receiving downloads from
the units' CPUs that describe the protocol and synchronization each is to use. Some newer systems are composed
entirely of redundant, microprocessor-controlled modules,
each of which can perform any of the functions of any other
with the proper software load; such a processor is actually a
distributed communications network in a box.
The advent of the microprocessor has also begun to blur the
distinction between traditional communications processors and less broadly functional devices such as multiplexers and terminal controllers, and has created a new class of
intelligent protocol converters dedicated to a task that was
once economical only as a function within a multifunctional communications controller. Now, even modems can
detect, report, and in some cases correct transmission
errors, and sense the conditions of transmission lines. The
old definition of a communications processor as a computer that has been programmed to perform one or more
control and/or processing functions in a data communications network now includes everything from modems and
dedicated monitoring equipment up to the IBM 3725.
In answer to this shifting definition, Datapro has created a
new section in Volume 2 of DATAPRO REPORTS ON
DATA COMMUNICATIONS, Tab C23, entitled Conversion Systems/Terminal Controllers. In the new section, the
reader will find information on many product categories
formerly covered in this report: protocol converters, intelligent terminal controllers, and PADs, to name three. To
complement the new section, we have sharpened the focus
of this report to include only true, multifunctional communications processors.
ADVANTAGES AND RESTRICTIONS
The principal advantage of a communications processor as
a networking tool is the physical and logical separation of
the networking function from the application-of its end
users. Whatever its architecture, such a network can function for any application, can grow in size without qualitative change to accommodate new applications, and can
accommodate new applications through the installation of
relatively standard, intelligent components. In simpler
terms, the user does not have to redesign and rebuild a
modular network to accommodate a change in the network's ultimate purpose.
technique through relatively simple upgrades. The newer,
microprocessor-controlled line bases, and· even line sets,
provide an even more flexible buffer against obsolescence.
In operation, a network controlled by communications
.processors can survive the total failure of one or more of its
host processors. In a multihost network, front-end processors can switch users from applications in a failed host to
similar or identical applications in a backup host, perhaps
elsewhere on the network. In a single-host network, a
functioning front end allows for a graceful degradation of
service in the event ofa host failure, perhaps allowing users
time to tenninate their tasks before total system failure, or
allowing communications among distributed application
processors in the absence of the controlling host.
Also in operation, the communications processor still fulfills its original purpose; relieving the host of the overhead
generated in keeping track of a network. Today's networks
are orders of magnitude more complex than those of the
mid-1970s when the first communications processors appeared, and thanks to the ever-lower cost of memory and
processing power, some oftoday's communications processors are bigger, faster, and more powerful than that era's
mainframes. They need to be.
Among the restrictions oftoday's communications processors are complexity and incompatibility. In an era of userfriendly hardware and software, the communications processor remains a device with which only a trained engineer
should meddle. Most require that their programs be written
in an arcane, assembler-level language, sometimes with the
benefit of pregenerated macros in the host access method,
often without.
Even with recent advances in simplicity and modularity,
configuring a communications processor to suit a specific
network or application can be difficult. With today's microprocessor technology, the better communications processors are the simpler; as an example, IBM's new 3725
Communication Controller sports a parts list only half as
long as that of the older 3705. The trend is toward fewer
components each of which can do more, but most communications processors are still lagging a bit behind that trend.
Despite the advent of open architectures and the impending arrival of truly standard protocols, the integration of
terminals, computers, and protocols foreign to a given
vendor's architecture remains difficult. The gateway function is a plus, but it is cumbersome and often expensive.
Most vendors are beginning to offer some level of IBM
compatibility through their communications processors,
but balk at anything beyond concession to the obvious
market leader.
THE CURRENT MARKETPLACE
Programmable, software-controlled communications processors are an especially handy tool in such standalone
networks because they can accommodate not only changes
in application but also the effects of technical progress. A
software~controlled communications processor with a good
design can survive several breakthroughs in networking
In 1984, the market for full-scale communications processors breaks down into four segments: IBM and plug-compatible communications processors for the IBM mainframe environment; communications processors dedicated
to the mainframe architectures of vendors other than IBM;
© 1984 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
/
~
t>
..
C13-010-107
Processors
Communications Processors
I:> packet-switching processors marketed as components of
large, vendor-independent private networks; and intelligent concentrators designed to serve in transparent network architectures.
In the IBM world, IBM sells 90 percent of the communications processors. The remaining 10 percent accounts for
some of the most intense competition in data communications. Within that market, NCR Comten is the clear leader,
followed by Amdahl and Computer Communications Inc.,
Memorex, and new entrant NTX.
The other mainframe vendors, Burroughs, Control Data,
Honeywell, NCR, and Sperry do not really compete with
one another in the communications processing marketplace. Each features a line of communications processors
dedicated to its network architecture, and each line of
communications processors has its merits. Honeywell's
Datanet 8 line features a broad array of compatibility
software. Sperry's DPC Series goes farther than most in
providing host-independent networking.
Among vendors of private networks, the two U.S. public
network leaders, Tymnet and GTE Telenet have solid
offerings. Other vendors include Amnet, and BBN Communications, designers of the original ARPAnet and recently gone commercial.
A number of vendors offer intelligent concentrators, often
at the high ends oflines of statistical multiplexers. Among
these are Infotron, Micom, and Codex.
USER EXPERIENCE
Datapro is proud to present the 1984 edition of our Network Users Survey. The survey is based on results received
from questionnaires mailed to a cross section of Data
Communications magazine subscribers.
Survey Methodology-Datapro designed and produced a
questionnaire and mailed it in November 1983 to approximately 10,000 addresses selected at random from a cross
section of Data Communications' U.S. end-user subscriber
base.
The questionnaire contained 37 questions, and was divided
into six basic parts. In the first part, users were asked to
provide information concerning the general characteristics
of their data communications networks. In each of the
remaining five parts, the users were asked to specify within
a given category the types of data communications equipment and services being used in their networks, and to
provide usage information and equipment ratings on each
type. The five categories of equipment/services included:
transmission facilities, communications and network processors, modems, line multiplexers, and testing and monitoring equipment. The questionnaire allowed the user to
rate up to two (or in some cases, three) vendor/model types
within each category of equipment. (Reproduction of the
form was permitted so that additional vendor/model types
within a given product category could be rated.) The results
of each of these five parts will be shown only in the Datapro
report to which they are applicable. This report contains a
summary of the user ratings provided by respondents to the
Communications and Network Processors section.
When Datapro received the returns, they were audited by
our senior level editors. All forms were carefully examined
for validity before being sent for tabulation. The Data
Communications labels were used for initial validation and
identification. Responses to specific questionnaire sections
or individual questions were disqualified whenever a vendor/model identity was omitted, user ratings were not
assigned, a vested interest on the part of the respondent was
judged to exist, or incomprehensible or unreasonable answers were given.
By the editorial cut-off of January 9, 1984, Datapro had
processed 600 valid forms, which were then shipped to
Mathematica Policy Research, Inc. for key entry and tabulation by computer. Summary information was prepared in
the form of totals, percentages, or weighted averages, as
appropriate for each question. Weighted averages were
computed in a manner similar to most college grading
systems: "Excellent" is weighted as 4, "Good" as 3, "Fair"
as 2, and "Poor" as 1. The tallied numbers for each value
were then multiplied by the corresponding weight, and the
average taken by dividing the sum of the products by the
total number of responses for that category.
The DCA 355 from Digital Communications Associates can
junction as a remote concentrator or as a standalone intelligent
switch.
APRIL 1984
Datapro suggests that the reader use the information presented with discretion. The individual equipment ratings
are not presented to readers as the major consideration in
making an acquisition decision. Rather, the ratings and I:>
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13~010-108
Processors
Communications Processors
TABLE 1. USER RATINGS OF COMMUNICATIONS PROCESSORS
Communications
Processor
Manufacturer
and Model
.~j
Number Number
of
of
User
Units
ReInsponses stalled
Overall
Performance
Ease of
Installation
Ease of
Operation
WA
E
G
F
P WA
E
G
F
P WA
ease of
Expansion
E
G
F
P WA
E
G
F
P
Amdahl
4705
15
86
3.7
11
4
0
0
3.4
8
7
0
0
3.5
10
5
0
0
3.2
3
6
6
0
Burroughs
B874
DCP
Other & unspecified
Subtotals
10
7
13
30
18
14
210
242
3.6
3.4
2.7
3.2
7
4
3
14
2
2
4
8
1
1
5
7
0
0
1
1
3.3
2.9
2.6
2.9
4
2
2
8
5
2
5
12
1
3
5
9
0
0
1
1
3.4
3.0
2.8
3.0
5
3
3
11
4
1
5
10
1
3
4
8
0
0
1
1
3.0
3.0
2.0
2.6
4
3
2
9
3
1
3
7
2
3
1
6
1
0
7
8
CCI
CC8
Other & unspecified
Subtotals
3
3
6
5
12
17
3.7
3.3
3.5
2
1
3
1
2
3
0
0
0
0
0
0
3.0
3.0
3.0
1
0
1
1
3
4
1
0
1
0
0
0
3.3
3.0
3.2
1
0
1
2
3
5
0
0
0
0
0
3.0
2.7
2.8
1
0
1
1
2
3
1
1
2
0
0
0
Control Data
Cl000
2550
Other & unspecified
Subtotals
6
3
3
12
55
6
5
66
2.7
2.7
2.7
2.7
0
0
0
0
4
2
2
8
2
1
1
4
0
0
0
0
2.5
3.0
2.7
2.7
0
0
1
1
3
3
1
7
3
0
0
3
0
0
1
1
2.5
3.0
2.3
2.6
0
0
1
1
3
3
0
1
4
0 2.2
3
0
6
0 3.0
1 2.7
1 2.5
0
0
1
1
2
3
1
6
3
0
0
3
1
0
1
2
6
13
3.0
2
3
0
1 2.5
1
2
2
1 2.7
1
3
1
1 2.7
1
2
3
0
4
9
13
30
34
64
3.5
3.3
3.4
2
3
5
2
6
8
0
0
0
0
0
0
3.0
3.0
3.0
0
2
2
4
5
9
0
2
2
0
0
0
3.0
3.1
3.1
1
3
4
2
4
6
1
2
3
0
0
0
3.3
3.6
3.5
2
5
7
1
4
5
1
0
1
0
0
0
GTE Telenet
TP4000
3
72
2.3
0
1
2
0
2.3
0
2
0
1 2.3
0
2
1
0
1.7
0
0
2
1
Honeywell
Datanet
Other
Subtotals
12
5
17
51
59
110
3.5
2.8
3.3
7
1
8
4
3
7
1
0
1
0 3.0
1 2.4
1 2.8
2
1
3
8
0
8
2
4
6
0
0
0
3.2
3.0
3.1
4
1
5
6
3
9
2
1
3
0
0
0
3.0
2.2
2.8
2
1
3
8
1
9
2
1
3
0
2
2
8
8
9
205
21
14
265
10
51
13
858
70
93
1,095
3.6
5
3
3.9
7
1
3.7
6
3
3.5 117 81
3.5
9 11
3.4
7
6
3.5 151 105
0
0
0
6
0
1
7
0
0
0
1
1
0
2
2.8
3.5
3.0
3.7
3.2
3.1
3.1
2
4
4
4
2
5
50 120
8
9
4
6
70 150
1
0
2
30
4
4
41
1
0
0
3
0
0
4
3.0
3.3
3.0
3.1
3.3
3.0
3.1
2
3
4
3
1
7
57 112
7 12
4
8
74 146
2
1
1
31
1
1
37
b
0
0
4
0
1
5
2.2
2.8
2.6
2.8
3.1
2.6
2.8
1
1
1
5
1
3
34 102
6 10
2
6
45 127
2
2
2
52
5
4
67
2
0
1
16
0
2
21
15
36
3.7
10
5
0
0
3.1
4
9
,
0
3.3
6
8
1
0
2.7
2
8
4
1
5
13
3.8
4
1
0
0
3.8
4
1
0
0
3.6
3
2
0
0
3.4
3
1
1
0
3
21
3
28
11
65
7
59
17
264
54
401
3.3
3.6
3.7
3.4
3.4
3.4
1
12
2
15
4
34
2
7
1
9
5
24
0
1
0
4
0
5
0
1
0
0
0
1
2.3
3.4
3.7
3.2
3.0
3.2
0
8
2
8
1
19
1
12
1
15
7
36
2
0
0
4
1
7
0
1
0
0
0
1
3.0
3.2
3.3
3.2
3.1
3.2
0
5
1
6
3
15
3
14
2
21
6
46
0
1
0
0
2
3
0
0
0
0
0
0
3.0
3.0
3.0
2.7
2.9
3.1·
0
3
1
7
2
13
3
14
1
18
5
41
0
3
1
2
2
8
0
0
0
0
1
1
Paradyne
All models
5
7
2.8
2
0
3
0
2.6
1
1
3
0
2.6
1
1
3
0
2.8
2
0
3
0
Peri phonics
TC7
3
4
3.0
0
3
0
0
2.7
0
2
1
0
3.0
1
1
1
0
2.0
0
1
1
1
3
7
8
18
5
3.3
2.6
3.1
2.9
2
1
2
5
0
4
5
9
1
0
1
2
0
2
0
2
3.3
2.3
2.6
2.6
2
1
0
3
0
2
3.7
2
3
0
7
1
1
3
5
0
13
111
129
5
1
1
5
7
0
1
3
4
0
1
0
1
3.3
3.3
2.6
3.0
2
3
2
7
0
.2
3
5
1
1
1
3
0
0
2
2
3
3
3.3
1
2
0
0
3.0
2
0
0
1 3.7
2
1
0
0
2.7
1
1
0
1
55
470
3.3
26
22
4
2
3.0
17
25
9
4 3.1
20
24
8
3
2.8
16
17
11
8
536
2,828
3.4 276 213
35
10 3.2 144 282
91
16 3.1 160 181
77
12 2.7 114 239 124
48
Codex
6000
Digital Communications
Associates
115
355
Subtotals
IBM
3704
3705-11
3705-80
Unspecified 3705
3725
Other & unspecified
Subtotals
Memorex
1270
Micom
600
NCR Comten
721
3650
3670
3690
Other & unspecified
Subtotals
Sperry
GCS
DCP40
Other & unspecified
Subtotals
Tymnet
All models
All Others
Grand Totals
5
2 3.0
0
2
2.6
2.9
© 1984 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
0
APRIL 1984
C13-010-109
Processors
Communications Processors
TABLE 1. USER RATINGS OF COMMUNICATIONS PROCESSORS (Continued)
Communications
Processor
Manufacturer
and Model
Quality of
Manufacturers
Software!
firmware
Hardware
Reliability
Quality of
Manufacturers
Technical
Suppon
Quality of
Manufacturers
Maintenance
Service
Ease of
Progremming
WA
E
G
F
P WA
E
G
F
P WA
E
G
F
P WA
E
G
F
P WA
E
G
F
P
Amdahl
4705
3.7
10
5
0
0 3.3
7
6
2
0 3.3
6
5
2
0 3.5
9
5
1
0
3.5
9
5
0
1
Burroughs
B874
DCP
Other & unspecified
Subtotals
3.5
3.4
2.7
3.2
7
3
3
13
1
4
3
8
2
0
4
6
0
0
1
1
2.8
3.1
2.3
2.7
1
1
1
3
6
6
5
17
3
0
3
6
0
0
3
3
2.7
3.4
2.5
2.8
1
3
2
6
6
4
4
14
2
0
4
6
1
0
2
3
2.8
2.9
2.5
2.7
1
1
3
5
6
4
2
12
3
2
5
10
0 2.6
0 2.0
2 1.8
2 2.1
0
0
0
0
7
1
2
10
2
5
6
13
1
1
4
6
CCI
CC8
Other & unspecified
Subtotals
3.0
3.7
3.3
1
2
3
1
1
2
1
0
1
0 3.3
0 2.3
0 2.8
1
0
1
2
2
4
0
1
1
0 3.0
0 2.5
0 2.8
1
0
1
1
1
2
1
1
2
0
0
0
2.3
2.7
2.5
1
0
1
0
2
2
1
1
2
1 2.7
0 2.7
1 2.7
1
1
2
1
0
1
0
2
2
1
0
1
Control Data
Cl000
2550
Other & unspecified
Subtotals
2.3
2.7
2.5
2.5
0
0
0
0
3
2
1
6
2
1
1
4
1 2.7
0 1.7
0 1.3
1 2.1
1
0
0
1
2
1
0
3
3
0
1
4
0 1.8
2 2.3
2 1.0
4 1.8
0
0
0
0
1
2
0
3
1
0
0
1
2
1
2
5
2.0
3.3
2.7
2.5
0
1
0
1
2
2
2
6
2
0
1
3
2
0
0
2
2.0
2.7
2.3
2.3
0
1
0
1
2
0
1
3
2
2
2
6
2
0
0
2
Codex
6000
3.2
2
3
1
0
2.0
0
2
2
2 2.4
1
2
0
1 2.3
1
0
5
0
2.3
0
3
2
1
Digital Communications
Associates
115
355
Subtotals
3.0
3.4
3.3
1
5
6
2
3
5
1
1
2
0 3.3
0 2.9
0 3.0
1
1
2
3
6
9
0
2
2
0 3.0
0 2.9
0 2.9
1
2
3
1
2
3
1
3
4
0 3.0
0 2.7
0 2.8
1
1
2
2
4
6
1
4
5
0 3.0
0 3.0
0 3.0
1
2
3
2
5
7
1
2
3
0
0
0
GTE Telenet
TP4000
2.7
0
2
1
0
1.5
0
0
1
1 2.3
0
2
1
0 2.0
0
1
1
1 2.0
0
1
1
1
Honeywell
Datanet
Other
Subtotals
3.3
3.0
3.2
6
2
8
5
2
7
0
0
0
1 2.8
1 2.6
2 2.8
3
1
4
5
2
7
3
1
4
1 1.8
1 2.6
2 2.2
0
1
1
1
2
3
5
1
6
2 3.3
1 2.8
3 3.1
5
2
7
6
1
7
1
1
2
0 2.8
1 2.6
1 2.5
0
1
1
10
2
12
2
1
3
0
1
1
IBM
3704
3705-11
3705-80
Unspecified 3705
3725
Other & unspecified
Subtotals
3.4
5
7
3.9
3.6
6
3.7 138
3.5
3
2
3.4
3.6 161
1
1
2
61
18
8
91
0
0
1
5
0
4
10
1
4
7
1
6
2
70 113
3 18
2
8
89 146
1
0
1
15
0
4
21
1
0
0
1
0
0
2
2.6
3.0
2.7
2.7
2.8
2.3
2.8
0
4
0
6
0
7
25 87
3 10
1
4
30 118
3
0
0
49
2
6
60
3.1
3
3
3.5
5
2
3.3
4
4
3.4 99 89
3.4
8 11
7
3.3
5
3.4 126 114
0
1
1
14
1
1
18
1
0
0
1
0
1
3
0
5
2.6
4
2
3.3
3.2
3
5
3.2 84 83
6 14
3.2
2.9
4
6
3.2 101 115
1
2
1
33
.1
41
1
0
0
2
0
1
4
Memorex
1270
3.5
7
8
0
0 3.1
4
3
2
0
3.0
2
4
0
1 3.2
3
12
0
0
3.1
4
9
2
0
Micom
600
3.8
4
1
0
0 3.2
2
2
1
0 3.8
3
1
0
0 3.0
1
3
1
0
2.6
1
1
3
0
NCR Comten
721
3650
3670
3690
Other & unspecified
Subtotals
3.0
3.6
3.3
3.5
3.2
3.4
0
14
2
15
5
36
3
6
0
11
2
22
0
1
1
2
3
7
0
0
0
0
0
0
3.3
3.0
3.0
2.7
2.4
2.8
1
5
0
4
1
11
2
10
3
12
4
31
0
3
0
7
2
12
3.0
2.9
3.0
2.6
2.2
2.4
0
3
0
1
1
5
2
11
3
12
3
31
0
5
0
10
2
17
0
0
0
0
3
3
3.0
3.3
3.7
3.1
2.8
3.2
0
11
2
8
1
22
3
4
1
14
6
28
0
4
0
5
2
11
0 3.3
0 3.2
0 3.0
0 2.8
0 2.4
0 2.9
1
8
1
5
0
15
2
8
1
12
5
28
0
3
1
9
4
17
0
1
0
1
1
3
Paradyne
All models
2.0
1
1
0
3 2.0
1
1
0
3 2.5
1
0
3
0
2.6
1
1
3
0
2.4
1
0
4
0
Periphonics
TC7
2.3
0
1
2
0
2.7
0
2
1
0 2.0
0
1
1
1 2.3
0
1
2
0
2.7
0
2
1
0
Sperry
GCS
DCP40
Other & unspecified
Subtotals
3.3
2.3
3.4
3.0
2
1
3
6
0
2
5
7
1
1
0
2
0 3.3
2 1.9
0 2.8
2 2.5
1
0
1
2
2
0
4
6
0
6
3
9
0
1
0
1
3.0
2.7
2.5
2.6
1
2
0
3
1
1
4
6
1
4
4
9
0 3.7
0 2.6
0 2.8
0 2.8
2
1
2
5
1
3
3
7
0
2
2
4
0
1
1
2
3.3
2.4
2.8
2.7
2
1
2
5
0
2
2
4
1
3
4
8
0
1
0
1
Tymnet
All models
3.7
2
1
0
0 3.0
1
1
1
0 3.3
1
2
0
0
3.0
1
1
1
0
2.7
1
0
2
0
All Others
3.1
19
23
10
14
21
10
6 2.7
13
11
7
8
2.9
12
23
9
4 2.8
14
18
11
8
84
29 2.7
44 3.2 197 229
75
16 2.0 158 219 119
29
Grand Totals
APRIL 1984
3.4 278 193
46
1
0
0
0
0
0
1
3
2.7
3.9
3.6
3.3
3.2
2.9
3.2
2.8
13 3.0 142 263
0
1
0
2
2
5
76 208 119
0
0
1
14
2
2
19
© 1984 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
\a
C13-010-110
Processors
Communications Processors
1> other information should be· used as guides to potential
strengths and weaknesses that may call for further investigation in selecting the· most suitable equipment for your
needs.
THE RESULTS
The first part of the Network Users Survey consisted of
nine questions that solicited information on the general
characteristics of the users' networks. Taken together, the
results provide a brief summary of the extent and complexity of these users' network configurations.
First, the users were asked to indicate the number of sites
thatare linked by their networks, with the following results:
1 to 3 sites
4 to 10 sites
11 to 25 sites
26 to 50 sites
Over 50 sites
Number of
Responses
Percent of
Responses
78
105
105
84
212
-584
13
18
18
15
36
100
These results present a fairly even spread of network sizes,
with half the users in the I-to-25 site range, and the other
half in the 25-and-over range. Note that no distinction is
made here as to the type or intelligence of the devices
located at any site.
The second question asked the number of computers participating as hosts. As you can see, over 70 percent of these
users are operating in multiple-host environments:
1 host
2 to 4 hosts
5 to 10 hosts
Over 10 hosts
Number of
Responses
Percent of
Responses
168
260
83
76
29
44
14
13
587
100
--
This adds some degree of clarity to the responses to Question 1, as well as developing a better picture of the level of
sophistication of these users.
The users were also asked to indicate the total number of
end-user workstations (CRTs, teleprinters, etc.) in use on
their networks:
1 to 10
11 to 25
26 to 100
100 to 500
Over 500
Number of
Responses
Percent of
Responses
28
36
106
224
195
5
6
18
38
33
589
100
When examined in conjunction with Questiohs 1 and 2,
these results characterize the typical respondent to the
survey as having a network configuration consisting of
approximately 25 sites, two or three hosts, and between 200
and 300 terminals (an average of 10 per site).
This year's results. though based on a somewhat smaller
user sample (600 responses compared with 699 for the 1983
survey), show a marked consistency with our 1983 results
when these three questions are compared. For instance, in
the 1983 survey, 34 percent of the respondents indicated
that their network consisted of 50 or more sites. This year,
the number was 36 percent. In 1983, 24 percent of the
respondents stated that their networks contained 5 or more
hosts; this year's survey showed that the number had
increased slightly, to 27 percent. For the number of term inals, 1983's survey showed that 69 percent of the respondents were using at least 100 terminals on their networks.
In this year's survey, the percentage was 71 percent. In each
case, this year's results indicate a continuation of the trend
of growth in the size of user networks that we observed in
our 1983 results survey results; however, this year's survey
shows a slower rate of growth than between 1982 and 1983.
Another question ·asked the users to identify the overall
network architecture with which their networks comply,
with the following results:
Percent of
Number of Total
Responses Responses
IBM BSC (non-SNA environment)
IBM SNA
Digital Equipment DNA
and DECnet
Hewlett-Packard DSN
Sperry DCA
Burroughs BNA
Honeywell DSE or DSA
Prime Primenet
Data General Xodiac
Other vendor-supplied
architecture
None, .or user-supplied
architecture
284
241
60
40
34
8
23
17
16
15
10
7
102
3
2
2
2
14
92
13
I
I
The number of responses totals 817, indicating that a
significant number of the respondents are using more than
one of the listed architectures in their networks. As was the
case in our 1983 survey, the largest group of users is still
operating in an IBM BSC environment. However, the gap
of 6 percent between BSC responses and SNA responses
continues to narrow (the gap was 8 percent last year, and 14
percent in 1982), indicating that the acceptance of that
architecture continues to grow. Interestingly, 13 percent of
the respondents (down from 18 percent in 1983) are not
complying with any vendor-supplied architectural scheme,
presumably either because their environments do not currently require it (but potentially may in the future) or
because they have found other satisfactory alternatives. 1:>
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
C13-010-111
Processors
Communications Processors
t> The users were also asked to indicate the primary protocols
Percent of
Number of Total
Responses Responses
supported by their networks:
Percent of
Number of Total
Responses Responses
Asynchronous
IBM BSC
IBM SDLC
X.25 packet-level
Other bit-oriented
synchronous protocol
(e.g., ANSI ADCCP,
ISO HDLC, Sperry, UDLC,
or Burroughs BDLC)
Other byte-oriented synchronous
protocol (e.g., DEC DDCMP)
Other
373
366
244
89
69
52
51
34
12
10
65
9
46
6
These results correlate with the results of the preceding
question, showing that a large number of users are using
more than one protocol in their network. ASCII and IBM
BSC are the most widely used protocols with IBM SDLC
coming in a distant third place. The high response for
multiple protocol usage suggests that many of these users
are still in various stages of migration to SNA.
The users were asked to identify which vendors' systems
are functioning as hosts. The following list summarizes
their responses:
IBM
DEC
Amdahl
Burroughs
Sperry
Hewlett-Packard
Honeywell
Data General
Prime
Control Data
NCR
National Advanced Systems
Other
(
Number of
Responses
Percent of
Total
Responses
402
145
69
49
51
49
40
34
32
32
21
18
73
56
20
10
7
7
7
6
5
4
4
3
3
10
As was the case last year, IBM came out well ahead of all
other vendors, while DEC placed second with a strong
showing. Many of the users are using more than one
vendors' systems as hosts, indicating that the multiple-host
environments represented in Question 2 are frequently
multiple-vendor environments as. well.
We also asked these users to indicate which, ifany, teleprocessing monitor software packages they are using.
APRIL 1984
271
24
18
9
8
6
6
3
97
145
IBM CICS and CICS/VS
Cullinane IDMS-DC
Sperry CMS and CMS/llOO
Cincom Environ/1
Software AG Com-plete
SDA Intercomm or Minicomm
ADR Datacom/DC
Westinghouse Westi
Other
None
38
3
3
1
1
1
1
1
14
20
These results indicate that, although IBM software is of
course predominant, various alternatives are sought out by
many users.
Another question requested that the users indicate any
commercial local area networks they operate, have installed now, and any that they plan to implement in the
coming year.
Number of
Responses
Installed
Now
IBM 8100 Loop
Ethernet
Datapoint ARCnet
Wang WangNet
Network Systems Corp.
Hyperchannel
IBM Series/IRing
Ungermann-Bass Net/One
Sytek LocalNet
Interactive Systems/
3M Videodata
Nestar
Prime Ringnet
Other
Planned
for 1984
36
26
15
14
9
6
34
1
14
8
7
5
5
5
13
10
7
5
4
4
28
3
1
28
158
130
Putting aside the possibility that a few users may have
indicated more than one type of local network, approximately 26 percent of these users currently have a local area
network installed. This compares to last year's comparable
figure of 17 percent, representing a significant increase. The
IBM 8100 Loop, with 36 networks in use, is the predominant LAN installed, but if these users carried out their
plans, Ethernet will surpass it in 1984.
The final question in the first part of the questionnaire
provided a list of ten possible sources of networking problems, and asked the respondent to indicate whether they 1:>
© 1984 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-112
Processors
Communications Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED
IBM BSC
IBM
SOLC
Other
Bit·
Oriented
Protocols·
Yes
Yes
No
GTE Telenet,
Tymnet, Datapac
Yes
No
Yes
No
Yes
No
Yes
Yes (HOLe)
Yes
Yes
IBM 2741
X.75
Amnet Nucleus 6000
Yes
Yes
Yes
Yes
Yes
X.75, other PADs
Auscom 8911A
Yes
Yes
Yes
Yes
Yes
Custom protocols available
on request
BBN Communications C/30
Yes
Yes
Yes
No
Yes
Telex
Burroughs Corp.
CP9558-1/CP9572
CP3680/CP3680·01
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Most Burroughs protocols
Most Burroughs protocols;
some IBM protocols
Cableshare
CSI Data Concentrator
Yes
No
No
No
Yes
-
LSI-X.25 Front-End
Yes
No
No
No
GTE Telenet,
Tymnet, Euronet
LSI-X.25 Int. Concent.
Yes
No
No
No
Yes
Uninet, Datapac
PSS, Transpac, Datanet,
Telepac,OATEX
Same as above, and Telex
LSI-X.25 Host Port
Concentrator
Yes
No
No
No
Yes
Same as above, and Telex
Century Analysis OSI
Yes
No
No
No
No
-
Chi Comm. Processors
Yes
Yes
No
Yes (HOLe)
Telenet
Codex 6520
Yes
Yes
No
No
No
Commex
DNP 4/6/16
Yes
Yes
Early 1984
Yes
Early 1984
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
No
No
No
GTE Telenet,
Tymnet
GTE Telenet,
Tymnet
Control Data
2551-3 & 2551-4
Yes
Yes
No
No
DCA 355
Yes
Yes
Yes
Yes
Yes
Yes
No
No
GTE Telenet
TP4oo0 Series
Yes
Yes
No
Yes (HDLC X.25)
GTE Telenet
IBM 2741
Honeywell Datanet 8
Yes
Yes
No
Yes (HDLe)
GTE Telenet,
+ 10 DDNs
VIP, PVE, RCI, LHDLC
IBM
3705-11 (E 1 thru L4)
3705-80
3725
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
GTE Telenet
GTE Telenet
GTE Telenet
Icot
251
Yes
No
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Tymnet, Telenet,
Uninet, PONs
No
No
No
ASCII
asyne./
TTY
Amdahl 4705
Yes
Amdahl Comm. Systems Div.
3400 Series
4410 Network Processor
II/Ianufacturer/
Product Name
CMC 4 & CMC 32
Computer Communications
CC-6
CC-8
CC·80/85
335
25X (253, 254, 257)
352
35X
X.25
Packet
Level
Other Protocols Supported
-
Rem 1, NTR, Uniscope 100 &
200, UTS
Telex, & IBM 2741, 2848,
2260
Various pas & custom
protocols
-
Telex
Telex, 83B3
Telex, 83B3, PARS, SABRE,
ARINC
-
GTE Telenet,
Tymnet, Datapac,
Transpac, BPO,
ITT
GTE Telenet,
DEC ODCMP-trunk only
ITT, RCA
GTE Telenet
Tymnet, Datapac,
Uninet, Autonet,
PSS
-
-
NCR, AIRINC
PARS, SITA, P1024, U400
Univac U400
'Other bit-oriented protocols include ADCCP, HDLC, BDLC, and UDLC.
© 1984 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
C13-010-113
Processors
Communications Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED (Continued)
IBM BSC
IBM
SOLC
Other
BitOriented
Protocols'
Packet
Level
Other Protocols Supported
Yes
Yes
Yes
Yes
No
Future
No
Yes
No
Future
Request price quotation
Request price quotation
Memorex 1270
Yes
Yes
No
Via VAN
Memotec MPAC 2500
No
No
No
Yes
Micom Micro800
Yes
No
No
No
Yes, Telenet,
No
Tymnet, Oatapac,
Transpac,
Oatex-P, Telepac
NCR Comten
3650 & 3670
Yes
Yes
Yes
Yes
3670 Model 85
Yes
Yes
Yes
Yes
3690 (A5-E5, T1-U1)
Yes
Yes
Yes
Yes
Transpac,
8383
Oatapac
GTE Telenet,
Tymnet, Uninet,
Transpac,
Datapac, Datex-P,
UKPSS
Yes
83B3
721-11
Yes
Yes
Yes
Yes
Yes
NCR 8SC' & in-house OLC
North American Philips
MARC
Yes
No
Yes
Yes (HDLC)
Yes
8383, Telex, & Cidin
NTX
3800 Modell
3800 Model 2
No
No
Yes
No
No
No
No
No
No
No
NOLC (extended HDLC)
NOLC (extended HOLC)
Paradyne Pix/Pixnet
Yes
No
No
Paradyne SOLC
No
-
Peri phonics T -Comm
Yes
Yes
Yes
No
No
Fedwire, credit card
networks, A TM networks
Yes
Yes
Yes
'Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
-
Raytheon
Raynet I, II, III, & IV
Yes
Yes
Yes
Yes
No
PARS, Univac, SITA
Sperry-Univac
DCP/40 & DCP/20
Yes
Yes
No
Yes
Yes
REM1, NTR
Starnet Data Systems Protex
Industries Starnet II
Yes
Yes
To be released
To be released
To be released
Tandem 6100
Yes
Yes
Yes
Yes
Yes
Telefile
FECP-X
Telepac
Yes
Yes
Yes
Yes
No
Yes
No
No
No
All major U.S. and
European
networks
-
Telematics
VAX FEP
Net 25
Series 1
Yes
Yes
Yes
No
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
-
-
Thomas Engineering
MZ-80
8770/20
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
Honeywell VIP
Honeywell VIP
TRT Data Products, Norfield
Comm.
System 300
System 400
System 500
Yes
Yes
Yes
No
Yes
Yes
No
No
Yes
No
No
Yes
No
No
Yes
-
Westinghouse Canada
W1655/656
Yes
Mid 1983
Mid 1983
Yes
Mid 1983
ASCII
async./
TTY
Lemcom Systems
CMC-4, CMC-8, & CMC-32
Distributed Network
Processor Series
Manufacturer/
Product Name
Telemarketer
VoicePac
CommStar
VoiceBox
(
X.25
Telenet, Datapac, Sabre, SWift, SIT A
PSS, Tymnet,
Transpac,
Oatex-P
Yes
'Other bit-oriented protocols include AOCCP, HOLC, BDLC, and UDLC.
APRIL 1984
© 1984 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
No
Burroughs, Tinet; NCR
-
-
PARS
C13-010-114
Processors
Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS
The comparison charts. that follow this report list the major
characteristics of 68 commercially available communications
processors. The text below explains the chart entries, in order of
their appearance on the charts.
Computer systems interfaced. For processors that serve IBM
and plug compatible mainframe computers, we assume that
they serve the entire, upward-compatible IBM line (IBM 370,
303X, 308X, and 43XX) along with the major plug-compatibles. For processors operating in open network architectures,
we list "Most major vendors."
Functional Configurations
Front-end Processors. A "yes" for this entry indicates that the
processor in question can serve as a channel-attached front end
to a mainframe computer. The next two entries list the maximum number of hosts that can be channel attached, and the
number of those hosts that can be active simultaneously. A
third entry lists the degree ofIBM emulation the processor can
perform.
Remote line concentrator. A "yes" for this entry indicates that
the processor in question can serve as a line concentrator
remote from any host processor in its network. The entry below
lists the number of hosts that concentrator can serve at one
time.
Host-independent network processor. A "yes" for this entry
indicates that the processor in question can control a network
of open architecture without the direction of a host computer.
Store-and-forward message switching processor. A "yes" for
this entry indicates that the processor in question can function
as a standalone, store-and-forward message switch.
Distributed processing node. Most true communications processors are not able to perform applications processing, however, some, including a few intelligent concentrators, can support
some distributed applications in addition to their principal
networking function. This class of communications processor
is becoming rarer;
Multiplexing/demultiplexing. A "yes" for this entry indicates
that the processor in question can function as a multiplexer.
Terminal-initiated application switching. A "yes" for this entry
indicates that the processor in question supports the selection
of applications within a session between an attached terminal
and an attached host, at the terminal's request.
Communications processor initiated dynamic line reconfiguration. Dynamic line configuration is another name for fallback
switching. A "yes" for this entry indicates that the processor in
question can switch a session from a connection involving a
failed line or communications processor component to a
healthy connection when it senses the failure, without operator
intervention.
Protocol conversion. The most common protocol conversion is
from asynchronous ASCII to the synchronous trunk protocol
specified by a given architecture (e.g., IBM's BSC or SDLC, or
X.25's LAP-B). This entry specifies the types of protocol conversion the processor in question can perform.
Code conversion. The most common code conversion is from
ASCII to IBM's EBCDIC. This entry indicates which code
conversions the processor in question can perform.
Error control. This entry specifies which of the available
schemes for error detection (e.g., Parity, LRC, or CRC) the
processor in question uses.
Automatic transmissicn speed detection. If the processor in
question can sense the data rate ofa given transmission without
intervention from the operator or user, this entry lists the
speeds it can sense.
Automatic disconnect of inactive dial-up terminals. Many communications processors can sense activity on their attached
terminals and disconnect a terminal session if it has been
inactive for a specified period of time. A "yes" for this entry
indicates that the processor in question can do so.
System Characteristics
Terminal controller. A "yes" for this entry indicates that the
processor in question can function' as a terminal controller
within its architecture.
Network architecture compliance. Some communications processors function exclusively within their vendors' network
architectures; others support open architectures such as X.25. If
a processor supports no network architecture, it may be a
"transparent" device, or it may support the prearchitectural
protocols of the vendor(s) whose hosts it supportS;
Communications line capacity. The five sections of this entry all
deal with the number oflines a communications processor can
support within specific ranges of data rates. The first three list
the maximum number of half-duplex communications lines
the processor can support within the three specified speed
ranges. The fourth lists the highest data rate the processor can
support. The fifth lists the effect (if any) that converting all lines
to full-duplex operation would have on capacity. Where such a
conversion has an effect, it usually cuts the maximum in half.
Communications Features/Functions
Entries under this heading list a number of major functions a
communications processor can perform, but that not all communications processors do perform.
Processor type. This entry lists the vendor and model of the
communicatiOJls processor's CPU. Many communications
processors use standard OEM microprocessors such as the Z80
or the MC68000.
Main memory word size, bits. In most cases, the main memory
word size is also the width of the processor's internal transmission path along its bus.
Main memory storage capacity, bytes. This entry lists the
capacity of main memory in the communications processor in
question. Large main memory capacity is useful for transmission with modern, high-speed protocols in which large blocks of
data must be stored for retransmission in case of error. Abundant main memory is also useful for the performance of a
number of high-level functions on a time-shared or interrupt
basis.
Level of data unit transferred across I/O channel. Communications processors configured as front ends transfer data to and
from the host through an I/O channel. The width, in bits, of the
I/O channel, coupled with the communications processor's
main memory word size, yields the level of data transferred
(e.g., byte, or block).
© 1984 OAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
~.
,/
C13-010-115
Processors
Communications Processors
KEY TO THE COMMUNICATIONS PROCESSORS COMPARISON CHARTS (Continued)
'Type of data transfer supported between memory and a) communications lines, b) mass storage, and c) other peripherals. In
some communications processors, only the CPU has access to
main memory, and other components, such as line bases and
I/O processors must interrupt the CPU to read or write information in main memory. In others, microprocessors in the
subsidiary components have share control of main memory
with the CPU, and can read and write memory on their own.
The latter process is called Direct Memory Access (DMA).
I/O, backup, and diagnostic peripherals supported. Most communications processors interact only with their attached hosts
and terminals, and rely on host disk systems for storage and on
host software for detailed diagnostics. Some newer models,
however, support local disk storage for control software, traffic,
and support information, and feature diagnostic consoles for
direct operator intervention.
Support for remote console. Some processors that support local
operators consoles can also support an operator's console
attached over communications lines.
Communications operating software:
Operating system implemented in. This entry indicates how the
processor in question stores its control program: wired directly
and inflexibly into the hardware, in software that must be
loaded into memory from the outside, in firmware (local readonly memory) onboard the processor, or in some combination
of these.
IPL method. This entry indicates how the processor in question
receives its initial program load: from its host processor, from a
locally attached diskette activated by an operator, or from
onboard read-only memory.
t:> had had any problems related to each possible source, with
these results:
Percent of Total Responses
Less
Severe or Severe or
frequent occasional
No
problems problems problems
Local loops
N onlocal comm. lines
Front-end software
Terminals
Host software
Terminal controllers
Modems
Host hardware
Front-end hardware
Multiplexers
(
15
13
5
4
4
3
2
2
2
2
35
45
32
54
43
36
48
38
24
23
24
15
34
17
27
29
27
33
39
36
Not unexpectedly, the area of these users' networks that
causes the most headaches is their communications lines.
Although few users experience severe or frequent problems
with their terminals, these devices seem to be the greatest
single source of minor or sporadic problems. The least
frequently experienced source of problems is multiplexer
equipment.
APRIL 1984
Additional software supported. This entry lists any network
control or applications software that the processor in question
can support.
User programmability. This entry indicates the degree of control users have over the control programs in the communications processor. Some are programmable in the sense that users
can select among a number of preset configuration parameters,
usually from a menu. Others are fully programmable, usually
through an assembler-level language. Mainframe front-end
processors usually use a subset of their hosts' access methods
implemented in macros;, other programmable communications
processors use a native assembler language.
Software separately priced. This entry shows to what extent the
communications processor's operating software is bundled
with the cost of the hardware.
Approximate proportion of currently installed systems supplied
as turnkey systems. A turnkey system is a system with which
the user need not participate in the configuration design; the
user can simply "turn the key" and have a working system.
Conversely, a turnkey system is one for which the user is denied
the privilege of a custom configuration.
Pricing and Availability. Entries under this header list purchase, lease (or rental) and maintenance pricing for minimum
and maximum configurations, whether maintenance is bundled with the lease or rental price, the product's date of first
delivery, the number of processors of that model the vendor
has installed to date, and the provider of service and maintenance for the product. 0
The remaining parts of the questionnaire focused on specific categories of networking services and equipment. Users
were asked to list the specific vendors and types of equipment they are using in their networks, and to provide user
ratings based on their experiences with each. Each section
of the questionnaire asked the user to provide the manufacturers and model numbers of each type of equipment
currently in use, the number of units installed, and ratings
in specific categories of user experience relevant to that
specific equipment category. A summary of the results of
these questions for all modem models is shown in Table 1.
The Datapro Research staff extends a sincere thanks to all
for responding so enthusiastically to our 1984 Network
Users Survey. Without your participation, it could not
have been the success it is, and we hope that this compendium of user experience will be of significant value to you.
We look forward to hearing from you again.
Communications Processor Vendors
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone
numbers of the vendors whose communications products are
shown in the comparison charts that follow.
Amdahl Corporation, 1250 East Arques Avenue P.O. Box 470,
Sunnyvale, CA 94088-3470. Telephone (408) 746-6000.
Amdahl Communications Systems Division, 2500 Walnut Avenue, Marina Del Rey, CA 90291. Telephone (213) 822-3202.I:>
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-116
Processors
Communications Processors
t>
Amnet, Inc., 101 Morse Street P.O. Box 412, Watertown, MA
02172. Telephone (617) 923-1850.
Memotec, 4940 Fisher, Montreal, Quebec, Canada H4T lJ7.
Telephone (514) 738-4781.
Auscom, Inc., 2007 Kramer Lane Suite 102, Austin, TX 75758.
Telephone (512) 836-8080
Micom Systems, Inc., 20151 Nordhoff Avenue, Chatsworth,
CA 91311. Telephone (213) 882-6890.
BBN Communications, 33 Moulton St., Cambridge, MA
02238. Telephone (617) 497-2800
NCR Comten, 2700 Snelling Avenue North, St. Paul, MN
55113. Telephone (612) 638-7777.
Burroughs Corporation, Burroughs Place, Detroit, MI 48232.
Telephone (313) 972-7000.
North American Philips Corporation, Communications Systems Division, 55 Knightsbridge Road, Piscataway, NJ 08854.
Telephone (201) 457-0400.
Cableshare, 20 Enterprise Drive P.O. Box 5880, London,
Ontario Canada N6A 4L6. Telephone (519) 686-2900
Century Analysis, 114 Center Avenue, Pacheco, CA 94553.
Telephone (415) 680-7800.
.CHI Corporation, 26055 Emery Road, Cleveland, OH 44128.
Telephone (216) 831-2622.
Codex Corporation, 20 Codex Corporation, 20 Cabot Boulevard, Mansfield, MA 02048. Telephone (617) 364-2000.
Commex, 141 Central Park Avenue South, Hartsdale, NY
10530. Telephone (914) 328-0600.
Computer Communications Inc., 2610 Columbia Street, Torrance, CA 90503. Telephone (213) 320-9101.
Control Data Corporation, 8160 34th Avenue South, Minneapolis, MN 55420. Telephone (612) 853-8100.
Digital Communications Associates, Inc., 303 Technology
Park, Norcross, GA 30092. Telephone (404) 448-1400.
GTE Telenet Communications Corp., 8229 Boone Boulevard,
Vienna, VA 22180. Telephone (703) 442-1000.
Honeywell Information Systems, Inc., 200 Smith Street, Waltham, MA 02154. Telephone (617) 895-6000.
International Business Machines Corporation, Old Orchard
Road, Armonk, NY 10504. Contact your local IBM
representative.
Lemcom Systems, Inc., 2104 West Peoria Avenue, Phoenix,
AZ 85029. Telephone (602) 944-1543.
Memorex, San Tomas at Central Expressway, Santa Clara, CA
95052. Telephone (408) 987-3593.
NTX Communications Corporation, 4251 Burton Drive, Santa
Clara, CA 95054. Telephone (408) 496-1110.
Paradyne Corporation, 8550 Ulmerton Road, Largo, FL
33540. Telephone (813) 530-2000.
Periphonics Corporation, 4000 Veterans Memorial Highway,
Bohemia, NY II 716. Telephone (516) 467-0500.
Raytheon, 1415 Boston/Providence Turnpike, Norwood, MA
02062. Telephone (617) 762-6700.
Sperry Corporation, Computer Systems Division, P.O. Box
500, Blue Bell, PA 19424. Telephone (215) 542-40II.
Tandem Computer, Corporate Headquarters, 19191 Vallco
Parkway, Cupertino, CA 95104. Telephone (408) 725-6000.
Telefile Computer Products, Inc., 17131 Daimler Street, Irvine, CA 92714. Telephone (714) 557-6660.
Telematics International, Inc., Crown Center, 1415 NW 62nd
Street, Fort Lauderdale, FL 33309. Telephone (305) 772-3070.
Tri-Data, 505 East Middlefield Road, Mountain View, CA
94039-7505. Telephone (415) 969-3700.
TRT Data Products, Norfield Communications Division, 3
Depot Place P.O. Box 549, Norwalk, CT 06855. Telephone
(203) 853-2777.
Tymnet, Inc. 2710 Orchard Parkway, San Jose, CA 95134.
Telephone
Westinghouse Canada, Inc., 777 Walkers Line, P.O. Box 5009,
Burlington, Ontario Canada LOR lTO. Telephone (416)
528-8811. 0
© 1984 DATA PRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
C13-010-117
Processors
Communications Processors
Amdahl
4705
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. ,10. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
Amdahl
Communications
Systems Division
3400 Series
Amdahl
4705E
All IBM and Amdahl
compatible mainframes
All IBM- and Amdahlcompatible mainframes
Yes
4
4
270X/370X,EP,NCP,ACF
Yes
Unlimited
No
No
No
No
SNA
Yes
No
4
4
270X/3708, EP, NCP, ACF
Yes
Yes
Unlimited
Network-dependent
No
Yes
No
No
No
Yes
No
Yes
SNA
No
352
352
Application-dependent
64K
Capacity halved
Most major vendors
Amdahl
Communications
Systems Division
4410 Processor
All X.25 equipped
vendors
No
-
-
352
352
Application-dependent
64K
Capacity halved
100
100
Network-dependent
19.2K
None
104
104
52
64K
None; see Comments
No
Yes
No
SIS, BSC, SDLC to X.25
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Yes
No
Yes
No
SIS, BSC, SDLC to X.25
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Yes
Yes
Yes
No
No
No
CRC
50 to 9600 bps
Yes
Yes
Yes
Yes
No
No
CRC
No
No
Proprietary
18
512K
Byte or block
Proprietary
18
1024K
Byte or block
CA 2/40
16
208K
Byte
Proprietary
16
768K
Block
DMA and interrupt
DMA and interrupt
None
None
Diskette (diagnostic)
DMA and interrupt
DMA and interrupt
DMA and interrupt
Diskette and self
diagnostics
Yes
-
Diskette as diagnostic
peripheral
No
No
Software
Software
Download from host
Comm-pro
Download from host
Comm-pro
Combination of software and firmware
From disk. & DP node
Yes
Network-dependent
Yes
No
Yes
Yes
No
DMA and interrupt
-
Yes
Combination of software and firmware
Load from diskette
-
-
User programmability
Yes
Yes
Yes
Software separately priced
Yes
Yes
Yes
Yes, via user-selected
parameters
Yes
All
All
All
All
50,225
448
1,444 (2-yr. lease)
52,400
360
2,935 (2-yr. lease)
200,000
2,000
127,000
1,600
Federal govt. only
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
327,970
2,682
14,196 (2-yr, lease)
300,000+
500
7,200 (2-yr, lease)
5,000,000
50,000
300,000
3,000
Federal govt. only
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
November 1979
700
Amdahl
No
April 1983
700
Amdahl
Operates with IBM
~705 and 3705/Commpro software, with up
to 1.8 times the 3705
throughput capacity
Operates with IBM
3705 and 3705/Commpro software, with up
to 2.4 times the 3705
throughput capacity
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Pur-chase price, $
,
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1984
-
-
June 1982
Over 75
Amdahl
Handles mix of async.
and sync. traffic;
used in multi-vendor
environment; proprietary packet switching;
supports satellite
transmissions; 1983
information
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
1979
Over 50
Amdahl
Full duplex transmission only has
Modulo 128 satellite
support; 4410 performs
self-diagnostics;
supports CCITT X.25;
1983 information
C13-010-118
Processors
Communications Processors
Amnet
Nucleus 6000
SUPPLIER AND MODEL
Auscom
B911A
Burroughs
CP36BO/
CP36BO-01
BBN Communications
Corp. C/30 PSN
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major vendors
IBM 360, 370, 43XX,
308X and plug-compatibles
Most vendors
Burroughs B2000,
B3000, and B4000
Series
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does not apply
Does not apply
Does not apply
Yes
1024
Yes
No
No
No
OSI
Yes
2
2
Any IBM control unit
Yes
2
Yes
Yes
Yes
Yes
Most LANs and custom
No
Does not apply
Does not apply
No
No
Does not apply
Yes(Packet switch node)
No
No
No
X.25
Yes
4
4
No
Yes
4
No
Yes
Yes
Yes
BNA
1024
1024
512
64K
None
Application-dependent
Application-dependent
Application-dependent
56K
None
22
22
22
56K bps
None
288 async., 72 sync.
40
40
19.2K
Capacity halved
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
None
Yes
No
Yes
Yes
No
No
LRC; CRC; EDAC
No
Yes
-
Multi-microprocessor
16
1M
Byte and block
DEC LSI-11
16
256K
Byte
BBNCC
16
128K
Byte; block
-
DMA
DMA
DMA
Console, printer, disk
DMA
DMA
DMA
Disk,
tape
Yes
DMA and Interrupt
DMA and Interrupt
Does not apply
Remote console
DMA and interrupt
DMA
-
Yes
Combination software
and firmware
Download from host
NDL,DCS
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Yes
Combination of software and firmware
Download from NMC
Program development
utilities
and interrupt
and interrupt
and interrupt
diskette, mag.
Yes
Yes
-
-
i(
1\
Software and firmware
Software and firmware
From diskette or tape
Program Dei
Download
Diagnostics; performance measure
Yes, on restricted
basis
Software options
User-created programs
No
All except diagnostics
None
Info. not available
90%
45,000
Info. not available
Info. not available
14,995
By component
Not available
58,000
Time / distance
None
64,050 (3680)
535
2,415 (3-yr. lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
200,000
Info. not available
Info. not available
19,750
By component
Not available
65.000
Time / distance
None
124,950 (3680+ -01)
1,010
2,310 (3-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
January 1983
Info. not available
Amnet/third party
No
July 1980
250
Auscom
Does not apply
1981
Over 500
BBNCC
January 1978
200
Burroughs
Supports 4 to 1024
ports, many protocols,
packet-switching,
dynamic routing;
part of an integrated
private data network
product line
Designed as a programmabie IBM channel
interface or FEP
emulating standard
control units; additional lines supported
with extended chassis
Dynamic packet routing;
logical addressing;
remote monitoring;
unattended operation
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
"'-
Yes, via user-selected
parameters
All
All
75%
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
Redundant system
1983 information
~/
:
""-
APRIL 1984
C13-010-119
Processors
Communications Processors
,
Burroughs
CP955B-1/
CP9572
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfar supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Cableshare
LSI-X.25
Front-End Processor
Cableshare CSI
Data Concentrator
Cableshare
LSI-X.25 Host Pon
Concentrator
All Burroughs; IBM
S/370, 30XX, 43XX,
and compatibles
All computers using
ASCII serial communication ports
DEC PDP-l 1 and VAX
All hosts supporting
async. communications
No
Yes
16
16
No
Yes
16
Yes
No
No
Yes
X.25
Yes
1
1
No
No
1
Yes
No
No
No
X.25,OSI
Yes
32 async. channels
32
No
Yes
32
Yes
No
No
Yes
X.25,OSI
16
16
16
56K
None
127
127
127
19.2K
Halved
32
32
32
19.2K
Halved
-
Yes
Yes
No
Async to X.25
None
X.25 procedures
Yes
Yes
Yes
No
No
Async./X.25
1
Info. not available
No
No
Yes
No
No
Async./X.25
Baudot! ASCII
Info. not available
Yes, 110-9600 bps
Yes
B920
16; multiprocessors
1.2M
Byte
Intel 8088
16
192K
Block
LSI-l 1/2 or PDP-l 1/23
16
64K
Block
LSI-ll/2 or PDP-l 1/23
16
64K
Info. not available
DMA
DMA
-
DMA
None
None
Console
DMA
None
None
FEP console
Info. not available
Info. not available
Info. not available
Console
-
Yes
Yes
Yes
Combination of software and firmware
Software and firmware
Software
Software
-
Yes
12
Yes
Yes
Yes
Yes
BNA, SNA
47
-
12
19.2K
None
-
-
ASCII to EBCDIC
-
Mag. tape, floppy
and hard disk
IPL method
,Additional software supported
-
Internal self-load
None
Download from host
None
Internal self-load
None
User programmability
-
Yes, via user-selected
parameters
None
No
No
Info. not available
Info. not available
-
All
All
All
22,559 (9572)
75
729 (3-yr. lease)
3,000
None
Not available
13.450
100
None
4,335
70
None
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
29.401 (9558-1)
200
1,033 (3-yr, lease)
5,600
None
Not available
16.450
125
18,500
100
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Yes
October 1980
1,000
Burroughs
No
June 1, 1983
No
Cableshare
-
1983 information
1983 information
DTE or DCE support;
supports up to 5 X.25
network links with DTE
or DCE configuration;
1983 information
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease / rental, $
COMMENTS
APRIL 1984
-
November 1978
75
Digital Equipment Corp.
© 1984 OAT APRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
-
March 1980
25
Digital Equipment Corp.
DTE or DCE support;
supports up to 5 X.25
network links with DTE
or DCE configuration;
1983 information
C13-010-120
Processors
Communications·· Processors
Century Analysis
OSI
(Office Systems
Interface)
Cableshare
LSI-X.25 Intelligent
Concentrator
SUPPLIER AND MODEL
Chi
Communications
Processor
Codex
6520
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
All async. terminals
DEC PDP Series, NCR
Century & Criterion
Univac 1100 Series
IBM S/370, 30XX,
43XX, and compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
32 async. channels
32
No
Yes
32
Yes
No
No
Yes
X.25,OSI
Yes
None
Multiple
No
Yes
Multiple
Yes
Yes
Yes
Yes
Yes
Yes
8
8
No
Yes
Unlimited
Yes
No
No
Yes
No
Yes
4
2
270X, 370X
No
Does not apply
No
No
No
No
No
32
32
32
19.2K
Halved
24
24
24
19.2K
None
Over 1000
300
150
64K
To 56K
240
Config.-dependent
Config.-dependent
230.4K
None
Yes
No
No
Async./X.25
Baudot/ASCII
Yes
Yes
Yes
Yes
Planned
Planned
Yes
No
No
Yes
Yes
Yes
Yes; all protocols
ASCII/EBCDIC/XS3
LRC, BCC, and CRC
Yes, llD-19.2K bps
Site option
No
Yes
Yes
ASCII/2741
ASCII/EBCDIC
LRC and CRC
Yes; 135 to 9600 bps
No
LSI-ll/2 or PDP-ll/23
16
64K
Info. not available
CAI-l08/116f124
16
1M
Block
Perkin-Elmer 3200
32
4M
Byte
CCI 801
16
64K
Byte
Info. not available
Info. not available
Info. not available
Console
Interrupt
Interrupt
Interrupt
FEP Console
DMA and interrupt
DMA and interrupt
FEP console
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP console
Yes
Yes
Yes
Yes
Software
Combination of software and firmware
Download from host
Combination software
and firmware
Host/self-Ioad/disk.
Simulator and other
utilities
From host or diskette
Yes, via user-selected
parameters
X.25; X780 simulators
-
All
All
-
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexin9
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-Yes,
110-9600 bps
IPL method
Additional software supported
Internal self-load
None
User programmability
No
Software separately priced
Info. not available
Via user-selected
parameters
No
All
All
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance. $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
-
4,335
70
None
6,500
Software 25; h/w 150
-
30,000
200
None
18,500
100
10,950
Software 25; h/w 150
-
-
500,000
Info. not available
None
No
December 1981
350
CAl
No
1977
50
Chi Corporation
DTE or DCE support;
supports up to 5 X.25
network links with DTE
or DCE configuration;
1983 information
CAl implementation
uses Motorola 68000,
flow control, loadleveling, raw line
class selection, error
correction, terminal
key-ahead buffering
Dynamic routing; two
async. screen editors;
automatic terminal
protocol detection;
redundancy; multiple
local and remote hosts;
UTS simulation; UTS
on X.25 network
March 1980
125
Digital Equipment Corp.
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
1/ \
~)
/
I
Software
-
Contact vendor
--
January 1980
Info. not available
Codex
(
~
...
APRIL 1984
C13-010-121
Processors
Communications Processors
Computer
Communications
CC-6
Computer
Communications
CC-8
Commex, Ltd
DNP 4/6/16
Commex, Ltd
CMC-4 and CMC-32
IBM 5/360, 5/370,
30XX, 43XX, and compatibles
IBM 5/370, 30XX, 43XX
and compatibles
IBM 5/370, 30XX, 43XX, IBM 5/370, 30XX,43XX,
and compatibles
and compatibles
Ves
64
64
270X, 370X EP
Ves
64
Optional
Optional
Optional
No
Future
Ves
1
1
270X, 370X EP
No
Does not apply
No
No
No
No
None
Ves
2
2
270X/370X EP
No
Does not apply
No
No
No
Ves
No
Ves
4
4
270X/370X EP
No
Does not apply
No
No
No
Ves
No
See Comments
See Comments
See Comments
56K
Half aggregate data
rate
32
32
24
56K
None
32
32
4
56K
None
240
120
32
230.4K
None
Ves
Ves
Ves
Optional
Optional
LRC and CRC
Ves; 110-19.2K bps
Ves
No
No
No
Optional
Optional
LRC and CRC
Ves; 110 to 1200 bps
Ves
Ves
No
No
No
Ves
Parity, LRC and CRC
Ves; 110 to 1200 bps
Ves
Ves
Ves
Ves
No
Ves
Parity, LRC and CRC
Ves; 110 to 1200 bps
Ves
Mot. 6809 & Sig. 8X3OO
8
15M
Byte and block
Motorola 6800
8
320K
Byte
CCI 601
16
64K
Byte
CCI 801
16
64K
Byte
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP consoles and
bubble memory
Ves
Interrupt
None
None
FEP console, others
optional
Ves
DMA and interrupt
DMA and interrupt
DMA and interrupt
Control panel
Ves
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP CRT console,
diskette, printer
Ves
Software
Firmware
Software
Software
IPL method
Additional software supported
Load from bubble memo
Network generator,
trace, on-line and
off-line diagnostics
Internal self-load
Full system
diagnostics
Download from host
Assembler, utilities,
diagnostics
From host/diskette
Value-added options
assembler loader,
utilities, diagnostics
User programmability
Ves, via user-selected
parameters
None
Custom
None
Ves, via user parameters and programs
None
Ves, via user parameters and programs
Value-added options
All
All
All
90%
Contact vendor
34,770
120
890 (3-yr. lease)
24,990
150
802 (3-yr.); 1048
(rental)
39,840
296
1,224 (3-yr.); 1,600
(rental)
-
65,645
275
1,950 (3-yr. lease)
Ves
June 1981
Approximately 50
Commex, third party
Ves
November 1977
Approximately 100
Commex, third party
51,368
405
1742 (3-yr.); 2263
(rental)
Ves
November 1981
14
Computer Comm.
181,200
1,593
5,858 (3-yr.); 7,635
(rental)
Ves
1976
220
Computer Comm.
Mod., pack. bus "rch.;
DNP 4 handles up to 13
lines plus cons.; DNP
6, up to 23 lines plus
cons.; DNP 16, up to
83 lines plus cons.
per cabinet (1300
lines max. per system)
Commex sells communications processors
manufactured by Lemcom and labeled with
the Commex name
Auto-poll,' auto-baud
rate detect, autodial, multihost support, user programmability, field
upgradability, reverse
channel
Auto-poll, auto-baud
rate detect, speed &
code conversion, auto
dump, auto load, multi
host support, terminal
initiated line sel.,
etc.
SUPPLIER AND MODEL
COMPUTER SVSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SVSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental. $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1984
-
© 1984 DA T APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-122
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Computer
Communications
CC-80/85
Control Data
2551-3
Digital
Communications
Associates
System 355
Control Data
2551-4
IBM S/370, 30XX, 43XX, CDC Cyber 170, Cyber
70, Cyber 6000 Series
and compatibles
CDC Cyber 170, Cyber
70, Cyber 6000 Series
Most vendors
Yes
7
7
270X/370X EP
No
Does not apply
Yes
Yes
No
Yes
No
Yes
2
1
No
Yes
8
No
No
No
No
Yes
Yes
2
1
No
Yes
8
No
No
No
No
Yes
DEC-l0; FEP-l0 opt.
8
8
No
Yes
Unrestricted
Yes
No
No
Yes
INA
1232
120
120
230.4K
None
32
32
4 @ 19.2K; 2 @ 56K
56K
None
254
254
4 @ 19.2K; 2 @ 56K
56K
None
44
44
22
19.2K
None
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
Async./X.25
No
Yes-ARQ
110 to 9600 bps
Yes
CC18001/8501
16
256K
Byte
CDC 2551-3
16
256K
Byte and control
CDC 2551-4
16
256K
Byte and control
Z80A
8
1472K (64K per Z80A)
Byte
DMA and interrupt
DMA and interrupt
DMA and interrupt
Disk (40-200 MB), mag
tape, FEP CRT, printer
Yes
DMA and interrupt
None
DMA and interrupt
Console, cassette
DMA and interrupt
None
DMA and interrupt
Console, cassette
Yes
Yes
DMA and interrupt
Interrupt
Interrupt
Dual casso tape unit;
disk; diagnos.built-in
Yes
Combination of software and firmware
Download from host
None
Combination of software and firmware
Download from host
None
Combination of software and firmware
Internal self-load
Configuration tape
generator
Yes
Yes
All
All
Yes; via user-selected
parameters/programs
Utilities only
95%
98%
98%
5%
68,000/115,640
246/426
1,932 (3-yr. le8se)
36,955
433
1,067 (3-yr. lease)
48,648
483
1,403 (3-yr. lease)
12,000 and up
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
674,050
3,344
17,523 (3-yr. lease)
68,570
751
2,048 (3-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Yes
1975
396
Computer Comm.
No
January 1983
Info. not available
Control Data Corp.
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software
IPL method
Additional software supported
From host/disk
Value-added options,
custom software,
assembler, loader,
utilities
Yes, via user parameters and programs
Options and custom sys.
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAlLA81L1TY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
157,478
1,540
5,093 (3-yr. lease)
No
January 1983
Info. not available
Control Data Corp.
Used mainly for custom
store-and-forward
message switches,
electronic mail, &
high speed transaction
processing systems
(e.g., airline
reservations)
© 1984 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
144,145
Contact vendor
Contact vendor
Contact vendor
October 1980
Over 200
DCA, third party
Supports host selection, port contention,
full line and modem
control facilities;
handles up to 44 highspeed trunk lines;
symmetric multi-proc.;
supp. up to 23 Z80As
APRIL 1984
('
L
/
C13-010-123
Processors
Communications Processors
(
-~
Digital
Communications
Associates
System 335
SUPPLIER AND MODEL
GTE Telenet
TP4000 Series
Honeywell
Information Systems
Datanet B
IBM
3705-11
Models E1 through L4
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors
Most vendors
Honeywell DPS 8, DPS
66, and DPS 64
IBM S/370, 30XX, and
43XX; S/360 in 270X
emulation mode only
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does not apply
Does not apply
No
Yes
Unrestricted
Yes
No
No
Yes
INA
Packet switch
Does not apply
128
None
Yes
128
Yes
No
No
No
X.25 virtual circuit
switching
Yes
4
4
Yes
Yes
4
Yes
No
Yes
Yes
Honeywell DSA (ISO)
Yes
4
4
270X/370X
Yes
1
No
No
No
No
SNA
34
34
17
19.2K
None
128
48
12 to 28
56K
None
128
Load-dependent
Load-dependent
56K
Load-dependent
352
352
32
230.4K
Capacity halved
Yes
Yes
Yes
Async. to X.25
No
Yes-ARQ
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Parity, LRC, CRC
110 to 1200 bps
Yes
Yes
Yes (by host program)
Yes
No
No
Yes
Yes; 110,300, 1200 bps
Yes; optional, variable
Yes
No
No
Yes
Yes
LRC and CRC
Yes, via optional soft.
No
Z80As
8
384K
Byte
MOS technology 6502B
8
256K
Info. not available
Datanet 8 (Honeywell)
16
1536K
Byte
Proprietary
18
512K
Block
DMA and Interrupt
Interrupt
Interrupt
Dual casso tape unit;
disk; diagnos.built-in
Yes
Interrupt and DMA
None
None
GTE Telenet NCC
Async. bus
Async. bus
Async. bus
Console, diskette
DMA
DMA
DMA
None
Yes
Yes
No
Software and firmware
Combination of software and firmware
Downline load from NCC
PAD support
Combination of software and firmware
Host, local, or VIP
Additional on host for
administration of
control
Download from host
NCCF, NPDA
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support 'for remote console
Communications operating software:
Operating system implemented in
Software
IPL method
Additional software supported
Downline/int. self-load
Configuration tape
generator
User programmability
User-selected parameters; programs
Utilities only·
Yes, via user-selected
X.3 parameters
All
Yes, via user-selected
parameters
All
Yes
5%
100%
Software is customer
installable
None
6,795
Contact vendor
Contact vendor
37,000-49,500
215-300
GTE Telenet tariff
42,565
259
1,432 (5-yr. lease)
38,230 (El)
147
1,635 (2-yr. lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Contact vendor
Contact vendor
Contact vendor
76,500-157,200
495-995
GTE Telenet tariff
210,465
1,138
7,615 (5-yr. lease)
107,040 (L4)
447
6,921 (2-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Contact vendor
1983
Info. not available
DCA, third party
Yes
Mid 1978
1300
Sorbus
Yes
Info. not available
Over 1000
Honeywell
Yes
August 1976
50,000
IBM
Supports host selection, port contention,
full line and modem
control facilities.
Functions with 1 to 4
trunks
Multiple Microprocessor
Line Card (LPU), common
logic redundancy and
power supply supported;
performs virtual circuit switching; auto.
virtual circuit recovery /rerouting.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1984
© 1984 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Yes
C13-010-124
Processors
Communications Processors
IBM
3705-BO
Models MB1
through MB3
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IBM 5/370, 30XX, and
43XX; 5/370 in 210X
emulation mode only
IBM
3725
Lemcom Systems
CMC-4
Lemcom Systems
CMC-B
IBM 5/370 (except models 115 and 125), 303X,
308X,4331,or4341
5/360, IBM 5/370,
30XX, 43XX, and compatibles
IBM 5/360, 5/370,
30XX, 43XX, and compatibles
Yes
Yes
1
1
270X
No
Does not apply
No
No
No
No
Does not apply
Yes
1
1
270X
No
Does not apply
No
No
No
No
Does not apply
Yes
2
2
270X/370X
No
Does not apply
No
No
No
No
SNA
6
270X and 3705 with EP
Yes
8
No
No
No
No
SNA
16
16
Info. not available
57.6K
Capacity halved
256 with 3726 expansion 4
256 with 3726 expansion 4
128 with 3726 expansion 3
230.4K bps
56K
None
None
6
56K
None
No
No
No
Yes
Yes
LRC and CRC
Yes; via optional soft.
No
Yes
No
Yes
Yes
Yes
LRC and CRC
Yes, via opt. software
No
No
No
No
Optional
Optional
LRC and CRC
Optional-300, 1200
Yes
No
No
No
Optional
Optional
LRC and CRC
Optional-300, 1200
Yes
Proprietary
18
1M
Block
Motorola 6800
8
40K
Byte
Motorola 6800
8
80K
Byte
DMA
DMA
DMA
None
DMA
DMA
DMA
FEP console
Interrupt
None
None
FEP console
Interrupt
None
None
FEP console
No
Yes, up to 150 meters
(492 feet)
Yes
Yes
Proprietary
. 18
256K
Block
8
8
8
\.-.
Software
Software
Firmware
Firmware
Download from host
NCCF, NPDA
Internal self-load
NCCF, NPDA, ACF/NCPPEP, EP/3725
Internal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
User programmability
Yes
Yes
Software separately priced
Yes
Yes
User-selected
parameters
Utilities only
Yes, via user-selected
parameters
Utilities only
None
None
None
None
36,600 (M81)
21&'
1,370 (2-yr. lease);
1,610 (rental)
32,000
190
1,390 (rental)
14,000
Contact vendor
Contact vendor
16,000
Contact vendor
Contact vendor
52,600 (M83)
229
2,120 (2-yr. lease);
2.491 (rental)
Yes
August 1981
Info. not available
IBM
75,000
213
3,260 (rental)
20,000
Contact vendor
Contact vendor
30,000
Contact vendor
Contact vendor
No
Fourth quarter 1983
Info. not available
IBM
Contact vendor
March 1977
330
Various
Contact vendor
November 1980
45
Various
HONE Configurator
CF-3725 should be
consulted for actual
number of operable
lines, depending on
line speeds, protocols,
3 other variable
factors
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPQs available
for a fee
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPQs available
for a fee
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
C13-010-125
Processors
Communications Processors
'.
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
suppol1ed
Support for remote console
Communications operating software:
Operating system implemented in
Lemcom Systems
CMC-32
Lemcom Systems
Distributed Network
Processor Series
M/A-COM DCC
CP9000
M/A-COM DCC
Micro-Node
IBM S/360, S/370,
30XX, 43XX, and compatibles
IBM S/360, S/370, 30XX, Most vendors via serial
43XX, and compatibles
interface
Most vendors via
serial interface
Yes
1
1
270X
No
Does not apply
No
No
No
No
Does not apply
Yes
64
64
270X, 370X, EP
Yes
64
Yes
Optional
Yes
Optional
DMMA
No
Does not apply
Does not apply
Does not apply
Yes
No limit
Yes
Yes
Yes
Yes
No
No
Does not apply
Does not apply
Does not apply
Yes
No limit
Yes
Yes
Yes
Yes
No
32
32
24
56K
None
6500
1500
250
57.6K
Capacity halved
480
240 to 480
60 to 120
56K
None
128
128
128
56K
None
No
No
No
Optional
Optional
LRC and CRC
Optional-300, 1200
Yes
Yes
Yes
Yes
Optional
Optional
LRC and CRC
110 to 19.2K bps
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Motorola 6800
8
320K
Byte
Motorola 6809
8
15M
Byte and block
6502 and Z80
8
4M bytes
Byte
6502 and Z8000
8 and 16
64K
Byte and block
Interrupt
None
None
FEP console
DMA and interrupt
Interrupt
None
Diskette
DMA and interrupt
Interrupt
None
Diskette
Yes
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP console and bubble
memory
Yes
Yes
Yes
Combination of software
and firmware
From host/diskette
System diagnostics
Firmware
Software
Software
IPL method
Additional software supported
Internal self-load
Problem determination
aids
Self-/manual-/down-Ioad
Channel prog. simulator
& prob. determin. aids
From host/diskette
Assembler & LOGOS
compilers & linker
system diagnostics
User programmability
Yes, via user-selected
parameters
Utilities only.
Yes, via user-selected
parameters
All
User created
programs
All
User created
programs
All
None
25%
None
None
20,000
Contact vendor
Contact vendor
25,000
Contact vendor
Contact vendor
Approx. 30,000
Application dependent
Offered as options;
contact vendor
Approx.25,ooo
Application dependent
Offered as option;
contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
60,000
Contact vendor
Contact vendor
500,000
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Contact vendor
March 1979
115
Various
Contact vendor
1981
120
Various
Approx. 200,000
Application dependent
Offered as options;
contact vendor
No
1977
575
M/A-COM DCC
Approx. 150,000
Application dependent
Offered as option;
contact vendor
No
1980
55
M/A-COM DCC
Microprocessor-directed
FEP; front-end poliing and console support available; OEM
discounts
Distributed MPU FEP; up
to 256 MPUs can be programmed to perform various comm. processing
functions; front-end
polling, dynamic applic. selec., & multiconsole support avail.
Communications features
and functions programmable by user; 1983
information
Multi-processor designed for fail-safe
operation; all components totally redundant; communication
features and functions
programmable by user
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1984
© 1984 OATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-126
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Memorex
Communications
Group 1270 Terminal
Control Unit
Memotec Data Inc.
MPAC 2500
Micom
Mlcro800jX.25
NCR Comten 3650
IBM S/370, 30XX,
43XX, and compatibles
Most vendors
Most
IBM S/370, 30XX, 308X,
43XX, and compatibles;
custom
Yes
2
2
270X, 370X EP
No
Does not apply
No
No
No
Yes
VAN
No
Does not apply
Does not apply
Does not apply
Yes (packet switch)
Port dependent
Yes
No
Yes
No
X.25
No
Does not apply
Does not apply
Does not apply
Yes
24
Yes
No
No
No
X.25
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
No
No
No
No
SNA/CNA
96
70
6
56K
None
8
8
8
9600
None
24
24
Info. not available
19.2K bps
None
128
128
32 to 128
230.4K
None
Yes, for VAN
Yes
No
X.25/BSC/ ASCII
ASCII/BCD
Yes
Yes, 50 to 9600 bps
No
No
Does not apply
Yes
No
Code-transparent
FCS
No
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Info. not available
Info. not available
Info. not available
Byte
Z80
8
Approx.60K
Block
Z80A;Z80B
8
64K
Byte
Proprietary
32
1M
Byte or block
Interrupt
DMA and Interrupt
None
None
DMA and Interrupt
None
None
DMA
DMA
DMA
Diskette, cassette
No
Async. terminals
Remote configuration
None
Yes
Yes
Console w IV ANS
Firmware
Software (EPROM)
Software
Software
IPL method
Additional software supported
Internal self-load
None
Internal self-load
Diagnostics
Int. self/downline load
None
See comments
NDP, CLSS 1, Codel 58
User programmability
No
Software separately priced
Yes
User-selected parameters
Options only
User-selected parameters
None
Yes, via user-sel. par.
& user programs
All
All
75%
All
All
14,900
126
543 mo. (3-yr. lease)
8,060
60
Not available
2,050
Info. not available
Info. not available
44,000
363
1,700 (2-yr. lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
45,000
250
1,450 (3-yr. lease)
10,590
60
Not available
4,600
Info. not available
Info. not available
125,000
631
4,150 (2-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1970
2,100
Memorex
No
1981
Info. not available
Memotec and distrib.;
Honeywell; Abbex
No
1982
750
Independent distributors
No
March 1975
1,560
NCR Comten
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
Hard-wired data
communications controller; 1983 information
© 1984 DATA PRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROI-IIRITED
Manual load from
diskette and download
from host
APRIL 1984
(
C13-010-127
Processors
Communications Processors
(
)
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NCR Comten
3670 Model 85
NCR Comten 3670
NCR Comten 3690
Models A8-E8
NCR Comten 3690
Model T1
IBM S/370, 30XX, 308X, IBM S/370, 30XX, 308X, IBM S/370, 30XX, 308X,
43XX, and compatibles;
43XX, and compatibles
43XX, and compatibles;
custom
custom
IBM S/370, 30XX, 308X,
43XX, and compatibles
Yes
4
4
270X, 370X, ACF/NCP
Yes
Unlimited
Yes
No
No
No
SNA/CNA
Yes
Yes
2
8
2
8
270/370X, NCP, ACF/NLP 270X/370X, ACF/NCP
Yes
Yes
Unlimited
Unlimited
Yes
Yes
Yes
No
No
No
No
No
SNA,CNA
SNA/CNA
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
Yes
No
No
No
SNA/CNA
384
384
96 to 284
230.4K
None
128
128
16 to 128
230.4K
None
512
512
128 to 512
230.4K
None
128
128
32 to 128
230.4K
None
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Proprietary
32
512K
Byte or block
Proprietary
32
512K
Byte or block
Proprietary
32
4M
Byte or block
Proprietary
32
1M
Byte, block, or file
DMA
DMA
DMA
Cassette
DMA
DMA
-
DMA
DMA
DMA
Diskette
DMA
DMA
DMA
Diskette
Yes
Yes
Yes
Yes
Software
Software
IPL method
Additional software supported
See comments
NDP, CLSS1, Codel 58
See comments
ComtenNDP, Codel 58,
and CLSSl
Combination of software
and firmware
See comments
NDP, CLSS1, Codel 58
Combination of software or firmware
Load from host/disk
NDP, CLSS 1, Codel 58
User programmability
Yes, via user-sel. par.
& user programs
All
Yes, via user-selected
parameters
All
Yes, via user-sel. par.
& user programs
All
Yes, via user-created
programs
All
All
All
All
All
90,000
270
3,000 (2-yr. lease)
34,500
290
1,260 (2-yr. lease)
105,000
442
3,600 (2-yr. lease)
66,000
366
2,257 (2-yr.lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
350,000
2,000
11,600 (2-yr. lease)
52,000
550
2,000 (2-yr. lease)
375,000
2,000
12,000 (2-yr. lease)
108,500
518
2,935 (2-yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
March 1972
450
NCR Comten
No
1982
-
NCR Comten
No
June 1978
1030
NCR Comten
No
January 1980
100
NCR Comten
Manual load from
diskette and download
from host
Manual load from diskette and download from
host
Manual load from
diskette and download
from host
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1984
-
© 1984 OAT APRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-128
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NCR Comten 721-11
North American Philips
Communications
System Division
MARC
NTX Communications
Corporation
NTX 3800-Model 1
NTX Communications
Corporation
NTX 3800-Model 2
NCR Century, Criterion,
8XX5 Systems
IBM S/370 and compatibles; Philips DS714
IBM and plug-compatible mainframes
IBM and plug-compatible mainframes
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
2
2
No
Yes
Unlimited
Yes
No
No
No
CNA
Yes
Unlimited
Unlimited
270X, 370X
Yes
Unlimited
Yes
Yes
Yes
Yes
Upon request
Yes
4
2
CTCA
No
Does not apply
No
No
No
No
SNA
Yes
4
2
270X, 37X5 EP
No
Does not apply
No
No
No
No
BSC
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
99
52-99
10 at 56K
56K
None
Configuration-dependent
Configuration-dependent
Configuration-dependent
19.2K
Configuration-dependent
8
8
8
6.3·12M
Halved
8
8
8
6.312M
Halved
Yes
No
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes, domestic, int'l.
ASCII/EBCDIC
CRC
110 to 9600
Yes
No
Does not apply
No
No
No
CRC
No
No
No
Does not apply
No
No
No
CRC
No
No
Proprietary
16
512K
Byte and block
Z80B 8-b.,Philips 16-b.
8 or 16
64K or more
Byte or block
Info. not :available
Info. not available
96K
Block
Info. not available
Info. not available
96K
Block; byte
DMA
DMA and interrupt
DMA and interrupt
DMA and interrupt
CRT, printer, disk
drive, mag. tape
Yes
Interrupt
None
None
Internal diag. processor
Yes
Interrupt
None
None
Internal diag. processor
Yes
Combination of software and firmware
Internal self-load
No
Proprietary host-based
software
Info. not available
None
Host-based software
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-
DMA
Cassette
No
Software
IPL method
Additional software supported
Load from cassette
No
User programmability
No
Access method macros
All
Yes, via user-created
programs
No
Configuration macros
Software separately priced
All
None
All
95%
Info. not available
Info. not available
41,720
209
1,205
30,000 (inc. software)
Info. not available
Configuration-dependent
163,340
400
5,709 (l-year lease)
145,730
474
5,754 (l-year lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental. $
100,400
502
3,500
200,000
Info. not available
Configuration-dependent
240,805
628
8,902
233,005
730
9,347
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Yes
1976
Approx. 1,200
NCR Comten
No
January 1980
125
M. V. Philips
No
Info. not available
Info. not available
NTX
No
Info. not available
Info. not available
NTX
Modular, microprocessor-based distributed processing system
including standard
operating system hardware 8. application
packages; 1983 information
Supports multiple
1.544M bps cross-domain
links over terrestrial
or satellite facilit.
Supported by ACF/VTAM
with NTX Cross Domain
Control Program; full
circuit redundancy.
Supports multiple
1.544M bps links using
IBM BSC; full circuit
redundancy.
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
/
~.
(
.
/
Info. not available
None
/~.-
APRIL 1984
C13-010-129
Processors
Communications Processors
(
Paradyne
Pix/Plxnet
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supponed simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supponed (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supponed between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supponed
Support for remote console
Communications operating software:
Operating system implemented in
Periphonics
T-Comm
Periphonics
Telemarketer
Peri phonics
Voicepac
IBM S/370, 30XX,
43XX, and compatibles
Most major vendors
3780/3270; most major
vendors
Most major vendors
Yes
1
Multiple
Does not apply
Yes
Multiple
Yes
No
Yes
Yes
None
Yes
12 per processor
12 per processor
370X,3803,3272,2848
Yes
7
Yes
Yes
Yes
Yes
SNA
Yes, dstrb. app. proc.
Info. not available
Info. not available
Info. not available
No
Does not apply
Yes
Electronic orders
Yes
Yes
No
Yes
3
3
Most std. interfaces
Yes
3
No
No
Yes
No
SNA
None
Application-dependent
3 full duplex
56K
None
520
520
520
56K
None
20
20
20
9.6K
None
78
78
78
9600
None
Yes
Yes
Yes
Async/3270; PC/3270
ASCII/EBCDIC
Yes
Yes
Info. not available
No
Yes
Yes
Yes
Yes
Yes, all industry std.
With specified modems
Yes
No
Yes
No
Yes
Yes
Industry standards
No
If selected
No
Yes
Yes
Yes
Yes
All industry standards
No
Yes
Proprietary
16
128K
Byte
DEC PDP-11
16
64K to 5M
Byte or block
Multi 32 bit and 16 bit
32 + 7
1-2M
Internal 2 or 4 bytes
LSI 11/23; PDP-11S
16
64-256KB w/Peripacs
Byte or block
DMA and interrupt
None
DMA and interrupt
Mag. tape; console
Interrupt
DMA and interrupt
DMA and interrupt
Interrupt and DMA
DMA
DMA & interrupt
CRT; ptr.; tape; disk
Interrupt
DMA and Interrupt
DMA and Interrupt
Yes
IPL method
Additional software supponed
Combination software,
firmware, hardware
Intern. self-load, man.
Utilities
User programmability
Self-configuring
CRT, printer, mag. tape
Yes
Yes
Yes
Yes
Proprietary
UNIX based
Proprietary software
From host or diskette
Network Definition
Utility, Voice Dialog
Utility
Hard disk
Network Definition
Utility, Voice Dialog
Utility; ReI. DBMS
Download or disk load
I/O Gen, Pave; Param
Yes, via user-selected
parameters, programs
All
Yes
All
Yes, voice dialog
& basic edit functions
All
All
80%
100%
75%
Contact vendor
Contact vendor
Contact vendor
50,000
Approx.400
Variable
60,000
Approx.600
Variable
25,000
250 min., variable
Variable
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Contact vendor
Contact vendor
Contact vendor
250,000
2,000
Variable
90,000
Contact vendor
Variable
150,000
250
Variable
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Contact vendor
Aprii 1976
Over 4,500
Paradyne
No
1980
500
Periphonics
No
1983
New product
Peri phonics
No
1981
200
Periphonics
Pix/Pixnet permits remote peripherals and
CRTs to access mUltiple
IBM hosts and applications as locally attac.
devices without remote
TP software and with no
software maintenance
Data/voice on same
line, voice response
system; network interface; nodal; solid
state audio; integrated services
Electronic order entry
system w /voice response
and handheld terminal
suppon
Handles data and voice
interchangeably via a
single I/O pon; can
concentrate, conven
protocol & code, and
serve as a network node
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1984
© 1984 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-130
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major vendors
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity. if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size. bits
Main memory storage capacity. bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O. back-up. and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Raytheon Data
Systems
Raynet I.. II. III
Periphonics
Voice Box
Peri phonics
CommStar
Most major vendors
Raytheon Data
Systems
Raynet IV
IBM. Sperry mainframes and compatibles
IBM. Sperry mainframes and compatibles
Yes
Yes
12/processor
3
12/processor
3
370X;3803; 327X; 2848 Yes
Yes
Yes
7
3
Yes
Optional
Yes
No
Yes
Yes
Yes
Yes
SNA
SNA
No
16
Interface-dependent
No
Yes
1(R-I); 8(R-II&R-III)
Yes
No
No
Yes
Yes
No
16
Interface-dependent
No
Yes
8
Yes
Yes
No
Yes
Yes
520
520
520
9600
None
32
32
32
9600
None
47
47
Varies
56K
None
47
47
Varies
56K
Capacity halved
Yes
Yes
Yes
Yes
ASCII/EBCDIC
Industry standard
With specified modems
No
Yes
Yes
Yes
Yes
Industry standard
With specified modems
No
Yes
No
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Daul 32 bit and 16 bit
32 bit ECC; 16 bit ECC
Up to 3M
2 or 4 bytes
LSI 11/23
16
128K
Byte or block
RDS-7500
16
256K
Block
RD5-7500
16
256K
810ck
DMA and Interrupt
DMA and Interrupt
DMA and Interrupt
Console; prtr.; modem;
disk;diskette;mag. tp.
Yes
Interrupt
DMA and Interrupt
DMA and Interrupt
DMA
DMA
DMA and interrupt
Console. cassette.
printer
Yes
DMA
DMA
DMA and interrupt
Console. cassette.
printer
Yes
Combination of software and firmware
From host. cass .• dsk.
None
Combination of software and firmware
Host download. casso
None
Yes; via user-selected
parameters
All
Yes; via user selected
parameters
All
Yes
Yes
Real-Time. UNIX-based
Proprietary software
IPL method
Additional software supported
Self-load from disk
Network def; ATM
switching; DBMS; highlevel langs.
EPROM based
None
User programmability
Yes
Yes
Software separately priced
All
All
Info. not available
75%
75.000
400
Variable
20.000
Approx.200
Variable
60.000
Info. not available
Info. not available
-
Maximum practical configuration:
Purchase price. $
Monthly maintenance. $
Monthly lease/rental, $
300.000
2.500
Variable
50.000
250 minimum
Variable
700,000
Info. not available
Info. not available
-
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1984
New product
Periphonics
No
1983
New Product
Periphonics
No
1978; 1980(R-II&R-III)
Over 100
Raytheon Data Systems
No
1980
Info. not available
Raytheon Data Systems
A user-programmable
comm. switching system
w / extensive library of
terminal and network
interfaces
A solid state unit that
can concentrate. convert protocol and code,
serve as a network
node. and provide voice
response.
Raynet I sup. network
control func., redundancy option; Raynet
II prov. all Raynet I
cap. plus host selec.;
Raynet III prov. all
Raynet II cap. plus
protocol conversion
Raynet IV provides all
Raynet III capabilities plus message
switching
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration. including all hardware
components required for basic operation:
Purchase price. $
Monthly maintenance. $
Monthly lease/rental. $
COMMENTS
v
,
~.
All
All
100.000
40,000
-
r.,-
'.
~
© 1984 DATA PRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
C13-010-131
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
SperryOCP/10
Sperry DCP/20
Sperry DCP/40
Tandem Computers
6100 Communications
Subsystem
Sperry Series
1100, Series 90
Sperry Series
1100, Series 90
Sperry Series
1100, Series 90
Tandem NonStop II and
NonStop TXP
Yes
1
1
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Yes
4
3
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
Yes
16
16
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
Yes
2 per 15 lines
2 per 15 lines
None
Contact vendor
Does not apply
Contact vendor
Contact vendor
Contact vendor
Yes
Contact vendor
6 sync, 24 async.
6 sync, 24 async.
6 sync, 24 async.
Info. not available
Info. not available
47 sync; 192 async.
47
47
64K
None
255 sync; 1023 async.
255
140
64K
None
360
360
360
56K
No effect
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Info.
Yes
Yes
Yes
Yes
Yes
Yes
Yes, 110 to 19.2 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes 110 to 19.2K bps
Yes
No
Contact vendor
Yes
Contact vendor
Yes
Yes
No
No
Sperry DCP/20
16
512K
Block
Sperry DCP/40
16
3.5M
Block
Proprietary
8
64K per line
Block
DMA
DMA
DMA
Console, disk, diskette,
mag. tape
Yes
DMA
DMA
DMA
Console, disk, mag.
tape
Yes
DMA
DMA
DMA
Integrated with system
Combination software
and firmware
Host download & disk.
File transfer
Combination software
and firmware
Host download & disk.
File transfer
not
not
not
not
not
not
not
not
not
not
not
not
not
not
not
not
available
available
available
available
available
available
available
available
available
available
available
available
available
available
available
available
Sperry DCP/1 0
16
512K
Info. not available
Info. not available
Info. not available
Info. not available
Info. not available
Info. not available
Info. not available
Contact vendor
Software and firmware
IPL method
Additional software supported
Info. not available
Info. not available
User programmability
Info. not available
Software separately priced
Info. not available
Yes, via user-created
programs
All
Yes, via user created
programs
All
None
None
10%
20,000
100
450 (5-year lease)
47,350
245
1,080 (5-year lease)
103,600
590
2,340 (5-year lease)
25,840
128
Does not apply
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
40,000
220
990 (5-year lease)
135,000
700
2,800 (5-year lease)
480,000
2,500
10,000 (5-year lease)
Contact vendor
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
December 1983
20
Sperry
No
January 1982
80
Sperry
No
September 1979
1,200
Sperry
Does not apply
April 1983
New product
Tandem
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Contact vendor
All
None
COMMENTS
APRIL 1984
Download from host
Contact vendor
© 1984 DATA PRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-132
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity. if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Telefile Computer
Products FECP-X
Telefile Computer
Products Telepac
Telematics VAX
Front-end Processor
Telematics
NET 25
Xerox Sigma 5-9 and
Telefile T80 Series
Standalone or Telefile
T80 Series
DEC VAX 11/730,
11/750, and 11/780
systems
Most
Yes
6
3
None
Yes
Network-dependent
No
Yes
Yes
Yes
None-
Yes
8
8
None
Yes
12
Yes
Yes
Yes
No
X.25
Yes
4
4
No
Yes
4
Yes
No
Yes
Yes
None
No
Does not apply
Does not apply
No
Yes (packet switch)
4
No
No
No
Yes
None
256
256
None
9600
None
280
280
280
19.2K bps
None
400
80 to 400
80
64K
Halved
800
160 to 800
160
64K
Halved
Yes
Yes
Yes
No
ASCII/EBCDIC
No
110 to 9600 bps
Yes
Yes
Yes
Yes
Async to 3270 BSC/SDLC
ASCII to EBCDIC
Parity, LRC and CRC
50 to 9600 bps
Yes
Yes
Yes
Yes
No
No
Yes
50 bps-19.2K bps
Yes
Yes
Yes
No
No
Yes
50 bps-19.2K bps
TCP-16
16
128K
Byte
M68000
16
64K Bytes MOS RAM
Byte or block
MC680oo/Telematics S1
32
16M
Block
MC68000/Telematics S1
32
16M
Block
DMA and interrupt
None
None
None
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP console, disk,
diskette, mag tape
Yes
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Yes
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Yes
Software
Software
Manual from disk
Pascal; C
Disk or remote port
Pascal; C
Yes
Yes
Yes
Yes
Yes
IPL method
Additional software supported
Combination of software and firmware
Download from host
None
Combination of software & firmware
Int. selfload, dskt.
Program dev. software,
utilities
User programmability
Info. not available
Software separately priced
Special applications
only
Yes, via user-selected
parameters
Special applications
only
25%
80%
None
None
35,000
425
712 (3-yr. lease)
30,000
350
615/3 yrs.
42,950
455
None
45,900
275
None
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
600,000
4,700
12,200 (3-yr. lease)
95,000
1,100
1,950 (3 yrs.)
171,800
1,820
None
220,000
1,320
None
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1976
10
Telefile
No
October 1980
17
Telefile
No
October 1983
Info. not available
Telematics
No
February 1984
Info. not available
Telematics
Hardware and software
compatible with all
Xerox and Telefile
mainframes; 1983 information
Provo mode for mult.
CCITT X.25 pub. or
priv. packet netwk.;
Sup. all ASCII based
hosts and terminals;
interface to SNA/SDLC
networks; 1983 information
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
© 1984 DAT APRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1984
C13-010-133
Processors
Communications Processors
(
\
Telematics
Series 1
/
SUPPLIER AND MODEL
Tri-Data
Netway 200
TRT Data Products
Norfield
Communications
System 500
Tymnet
Micro-Engine
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most
Most major vendors
Most major vendors
Most major vendors
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. 00. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
No
Does not apply
Does not apply
No
Yes
4
No
No
No
Yes
None
No
Does
Does
Does
Yes
4
Yes
No
No
Yes
SNA;
No
Does
Does
Does
No
Does
Yes
Yes
Yes
Yes
Yes
No
Does not apply
800
160 to 800
160
64K
Halved
6
6
6
56K
None
512
32
24
56K
70%
Yes
Yes
Yes
No
No
Yes
50 bps-19.2K bps
Yes
Yes
Yes
Yes
ASCII to EBCDIC
Parity; LRC; CRC
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
MC68000/Telematics Sl
32
16M
Block
Z80A
8 bits
256K
Byte
DMA and Interrupt
Perkin-Elmer 3230
32
4M
Info. not available
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are fUll-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
DMA and Interrupt
DMA
DMA and Interrupt
Removable disk (5M
bytes)
Yes
Software
not apply
not apply
not apply
X.25
DMA and Interrupt
DMA and Interrupt
Diskette
Info.
Info.
Info.
Info.
Yes
Yes
not apply
not apply
not apply
not apply
Packet switch
Depends on configu.
Yes
No
No
Yes
Tymnet proprietary
(Tymnet II)
Depends on configur.
Depends on configur.
Depends on configur.
19.2K bps
Increased
Yes
No
Yes
Any supported/any sup.
. ASCII/2741/Baud./EBCD
Parity; CRC
Yes
Yes
not
not
not
not
available
available
available
available
Proprietary
32
512K
Does not apply
DMA and Interrupt
Does not apply
Does not apply
None
Yes
IPL method
Additional software supported
Disk or remote port
Pascal; C
Software
Combination of software and firmware
Rem. download or manual Manual loading disk.
Info. not available
CP/M
User programmability
Yes
Yes
No
Download from Engine
Validation utilities;
operations utilities;
acctg. utilities; Net.
mgt. and control; msg.
Yes
Software separately priced
Yes
All but O.S.
Info. not available
Utilities
None
90%
None
All
26,000
150
None
7,920
Info. not available
Info. not available
250,000
500
Contact vendor
10,000 (approx.)
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
185,000
1,110
None
15,000
Info. not available
Info. not available
1,000,000
3,000
Contact vendor
16,120 (approx.)
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
December 1983
Info. not available
Telematics
Info. not available
April 1983
120
Tri-Data
No
1982
Info. not available
Norfield
No
"983
200
Tymnet
Supports networks up to
254 nodes @ 32 devices
per node.
Custom systems
available; 1983 information
Engines sold as
components of complete,
custom networks
compatible with
Tymnet's public network
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1984
© 1984 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Microcode
C13-010-134
Processors
Communications Processors
Tymnet
Mini-Engine
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Tymnet
Engine
Westinghouse Canada
Electronic Systems
DMsion
W1655/1656
Most major vendors
Most major vendors
IBM PARS, Sperry
Uniscope 100 & UTS20
No
No
Packet switch
Depends on configu.
Yes
No
No
Yes
Tymnet proprietary
(Tymnet II)
Packet switch
Depends on configu.
Yes
Yes
No
Yes
Tymnet proprietary
(Tymnet II)
No
Does not apply
Does not apply
Does not apply
Yes
4
No
Yes
No
Yes
None
Depends on configur.
Depends on configur.
Depends on configur.
74K bps
Increased
Depends on configur.
Depends on configur.
Depends on configur.
74K bps
Increased
16
16 at 4800; 8 at 9600
None
19.2K
Capacity reduced
Yes
No
Yes
Any supported/any sup.
ASCII/2741/Baud./EBCD
Parity; CRC
Yes
Yes
Yes
No
Yes
Any supported/any sup.
ASCII/2741/Baud./E8CD
Parity; CRC
Yes
Yes
No
No
No
Ul00/Pl024
IPARS/Pl024
Yes
No
No
Proprietary
32
1M
Does not apply
DMA and Interrupt
Proprietary
32
1M
Halfword
DMA and Interrupt
Intel 8085 (dual)
8
32K
Block
Does not apply
Does not apply
None
DMA
DMA
Disk; mag. tape; console
Yes
Yes
Microcode
Microcode
Firmware
From disk or tape"
Download, EPROMs
Info. not available
User programmability
Yes
Yes
No
Software separately priced
Utilities
Utilities
Specials
All
All
25%
40,000 (approx.)
Contact vendor
Contact vendor
70,000 (approx.)
Contact vendor
Contact vendor
12,000
Info. not available
Third party
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
70,000 (approx.)
Contact vendor
Contact vendor
130,000 (approx.)
Contact vendor
Contact vendor
20,000
Info. not available
Third party
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1981
210
Tymnet
No
1978
850
Tymnet
No
September 1976
300
Third party
Engines sold as
components of complete,
custom networks
compatible with
Tymnet"s public network
Engines sold as
components of complete,
custom networks
compatible with
Tymnet·s public network
"Or downline from other
engine
Remote line polling;
1983 information
COMMENTS
© 1984 OATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
(
!
. Yes
Download from Engine
Switching
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
~
Interrupt
DMA and interrupt
Interrupt
Yes
IPL method
Additional software supported
Approx. proportion of currently installed
systems supplied as turnkey systems
}!
•
APRIL 1984
C13-010-101
.p-rooesSOl'&
Communications Processors
Communications processors are computers that have been
programmed to perform one or more control and / or
processing functions in a data communications network.
The trend continues toward providing multi-functional
products. Like the computer industry as a whole,
communications processor vendors are capitalizing on
improved technology 'and delivering highly flexible but
cost-effective products based on the latest microprocessor,
memory, and other high-tech components. Processors
functioning as communications line multiplexers, host
independents, concentrators, protocol converters,
switches, terminal controllers and / or distributed
processing nodes are starting to flourish as communication processor multifunctionality becomes increasingly
common.
This trend has taken its toll, by attrition or consolidation,
among traditional front-end processor vendors. For
example, in 1982, Rockwell-Collins discontinued
marketing their front-end processors. NCR and its
Comten subsidiary consolidated their operations, with all
products now headquartered at the NCR Comten facility
in St. Paul, Minnesota. Burroughs Corporation
retrenched itself by acquiring Systems Research, Inc., a
small but innovative independent specializing in
Burroughs-oriented communications systems. Burroughs
further strengthened its position by acquiring Memorex,
whose 1270 Terminal Control Unit has one of the largest
customer bases of the IBM front-end processor emulators. Similarly, Amdahl acquired Tran Telecommunications.
Despite any setbacks that have occurred, most analysts
predict a healthy growth rate of about 20 percent per year
through 1985. Most vendors have continued to enhance
their existing communications processor product lines,
and several new products are available such as the IBM
3725 Communications Controller, the BetaCom Pro-
The new IBM 3725 Communications Controller supports up to
8 hosts, 256 lines, and 1,024K bytes ~fstorage. Compared to the
3705-/1, it handles larger networks, contains more main memory,
and offers simplified machine structure.
APRIL 1983
The primary function of a communications
processor is front-end processing. to relieve the
host computer of such tasks as protocol and code
conversion, iine control of communications cirCl,lits
between the host computer and remote terminals,
and error correction. Communications processors
serving also as multiplexers, concentrators,
distributed processing nodes, and processors
independent of a host are becoming more
prevalent. The comparison chart section of this
report outlines the major characteristics of some 78
products offered by 40 different vendors. We have
also reported on the experience of 742 users
representing 5,606 installed communications
processor systems.
fessional Communications Manager (PCM), the Cableshare CSI Data Concentrator, and the Periphonics
Datapac, Voicepac, and Telemarketer. Users can choose
from a wide variety of communications systems that
support increasingly sophisticated front-end processing,
intelligent remote concentration, network processing,
and other communications processing capabilities.
Developmental Factors
Several major developm'ents have led to the dramatic
increase in the use of communications processors, and to
their continual development into machines with
progressively higher capacity, capability, and compatibility.
The first major development was recognizing that the data
communications functions must be segregated from other
data processing functions. This resulted in modular
communications software packages and communications
interfaces that permit alteration of the communications
environment without major surgery to the hardware and
the software. It also permits the organization of
communications processing functions, relative to other
processing functions, along assembly-line principles. The
assembly-line technique segments a job into discrete
elements for exclusive execution by specialized persons or
equipment; the assembly-line total output significantly
exceeds the output of the same persons or equipment with
each performing the total job. The development of
specialized components to perform essential line handling
functions resulted in the front-end processor, which freed
the host processor of this time consuming task. A frontend/host configuration is able to handle a significantly
greater data volume than a single processor with
equivalent power that performs both the line handling and
the data processing function.
The second major development was the introduction of
the microprocessor. Now a standard item utilized in all 1:>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-01 0-1 02
Processors
Communications Processors
t:>
types of electronic componentry, the microprocessor
permits implementation of sophisticated processing
functions at increasingly low cost. Complex communications processing tasks once handled by special-purpose
hard-wired controllers' are now accomplished by
inexpensive microcomputers that, when properly designed
and programmed, are no more complicated to deal with
than disk drives. And the fact that the costs of transmission
facilities continue to increase justifies placement of
communications processing equipment throughout the
data communications network, as well as at the host site.
Technical innovations in the use of microprocessors
continues to improve price/performance of new
communications processors. For example, throughput
capabilities are enhanced by using multiple microprocessors within the communications processor to
perform specialized functions. Altering the microcode or
stored logic (either directly by the user or indirectly by such
features as IBM's Extended Facilities) has added a new
dimension to throughput improvement techniques.
Multiport memory access has facilitated warm-start backup systems. Virtual operating systems are taken for
granted and full-capability data base management systems
are being given serious consideration by installations
previously reluctant to accept the associated CPU
overhead.
Intimately tied to the evolution of intelligence for
communications processing equipment is' the parallel
development of intelligence for remote data processing
equipment. The assembly-line concept can be extended to
all segments of a network, in which many small systems
perform specific, specialized communications and data
processing tasks independently of the host computer. This
decentralized or distributed data processing has given rise
to a new type of data processing module: the small
processor or minicomputer which performs both data and
communications processing. Honeywell's DPS/6 and
Sperry Univac's V77 family of minicomputers are two
examples of processors which can serve either as standalone processors, or as distributed systems which offer
significant communications control capabilities.
A third, and often overlooked, influence on the
development of communications processors is the effort
on the part of most vendors towards standardization,
particularly for lower-level activities, such as physical
interfacing and connection establishment, maintenance,
and release functions. This on-going effort, along with
hardware architectural improvements, is reducing the
investment, inventory, and software support necessary to
support a variety of different terminal and line disciplines,
which are different for few justifiable reasons. Standardization, in addition to reducing costs to existing users,
will continually increase the user base that can
economically justify the use of electronic communications
in their operations.
For higher level functions, most of the large mainframe
and minicomputer manufacturers have codified their own
communications standards by setting down a set of rules,
or "network architecture," that governs how its software
and hardware products can be used to create a network
structure. IBM's Systems Network Architecture, DEC's
DECnet, Sperry Univac's Distributed Communications
Architecture, and Honeywell's Distributed Systems
Environment are examples of such architectures.
Although not compatible with one another, most of these
architectures generally follow the recommendations of the
European-based International Standards Organization
(ISO), which has suggested a reference model for network
architectures called Open Systems Interconnection (OSI).
Among the standards recognized by OSI are ISO's HDLC
link-level protocol and the CCITT X.25 packet-switching
interface. Minor variations of the international HDLC or
IBM's version of HDLe, which is called SDLe, are now
supported by many suppliers of communications
equipment. Moreover, in the past Year, many vendors
have announced CCIlT packet-level X.25 support in the
United States. The X.25 capability permits interconnection of equipment via private (dedicated) or public
packet-switching networks. Several public packetswitching networks are now or will soon be operational in
the U.S., including Tymnet, GTE Telenet, Uninet, and
CompuServe. An X.25 package offered with a communications processor product is generally certified as
compatible with one or more of these public data
networks.
The direction of the communications processor market is
intimately involved in the development of these and
similar standards, since the communications processor is a
primary vehicle for their implementation. As the trend
towards standardization progresses, the market for
communications processors should continue to
strengthen.
Communications Processor Components
The essential components of every communications
processing system are the following:
I.
Proce.~sor. The processor element is a stored-program
digital computer of almost any size. It must have its
own main memory, but it mayor may not usc on-line
peripheral devices. The processors should have
excellent interrupt and/ or direct memory access
(DMA) handling and strong bit manipUlation
capabilities.
2. Central processor interface. When acting as a frontend, the communications processor must i'nclude the
proper hardware interface to permit it to connect
directly to a standard input/ output channel of the
central processing unit (or host computer). Such an
interface should permit the host computer to
communicate with the front-end processor as if it were a
standard pedpheral device control unit, requiring little,
if any, operating system software modification. When
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
'-"
/
C13-010-103
Processors
Communications Processors
acting as a remote processor, support for data
communications line interfacing that connects the
processor with the host computer(s) must be provided.
3. COl11municatiuns fIlultiplexer. This component
provides a logically independent data channel into the
communications processor's main memory for every
transmission line being served. The multiplexer serves
as the communications processor's functional interface
with the data transmission lines. Control of incoming
and outgoing data is coordinated between the
multiplexer and the processor via interrupts or direct
memory access (DMA).
4. Line interface units. These components are hard-wired
devices that link the multiplexer with the modems that
terminate each communications line. Like the modems,
the line interface units are specifically tailored to serve
the speed transmission characteristics of the lines they
terminate. The lines are, in turn, generally selected
according to the transmission requirements of the
remote terminal devices.
5. Su/hmre!lirmware. The communications processing
hardware components become an integrated, functioning system only through the inclusion of storedprogram logic (either firmware or software)- some
generalized, and some highly specialized. The programs
should include terminal control, line control, message
control, and central system interface procedures.
Depending on the supplier, the user may have to
provide some portion of the software required to
implement specific requirements.
Communications Processor Functions
Because a communications processor is essentially a
computer, it can be programmed to perform an almost
limitless variety of functions. But in its role as controller of
a data communications network, the specific functions
generally programmed are those that relate to data and
message control. The following functions are the most
important ones offered with the more comprehensive
communications processing systems. Some systems will
not provide all these functions, as all are not required in
specific installations.
I. Line contrul. This involves the periodic polling of
terminals to determine readiness to transmit and
receive data. Automatic call answering, acknowledgment, and dial-up can also be handled.
2. Character and message assemb~v. Bits are assembled
(and disassembled) into parallel characters, and
control characters are recognized to permit the
assembly and disassembly of entire messages. Data
can be handled at varying line speeds and in
synchronous or asynchronous formats, with startstop bits and synchronizing characters handled
automatically.
APRIL 1983
The Amdahl 4705 Communications Processor is functionally
equivalent to and so./iware-colllpatihle with the IBM 3705-11.
The Amdahl system is smaller, faster, and less expensive than the
3705.
3. Code and protucol conversiun. The data transmission
codes (such as Baudot, ASCII, etc.) and protocolprescribed formats are converted into structures that
are equivalent to the host's native data code (such as
EBCDIC) or conform to the formats of more efficient
protocol procedures.
4. Data and message editing. This is a general function
that can include application-oriented reformatting,
removal of spaces and zeros (and other kinds of data
compression), and other data restructuring to permit
more efficient data transmission and more efficient
processing by the host computer.
5. Error control. Using both hardware and software
techniques, the communications processor can detect
and correct data transmission errors before they reach
the host computer.
6. Message buffering and queuing. The communications
processor can buffer several messages in its main
memory before passing them to the host computer,
with the intention of interrupting that computer as
infrequently as possible. Also, if the host computer I:>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-104
Processors
Communications Processors
cannot process incoming messages as fast as they
arrive into the system, the communications processor
can queue these messages in its own auxiliary storage
units, such as disks, or magnetic tape units, and can
transfer these messages to the host computer when
processing time becomes available. Queue management can be arranged in several different ways,
including a system of priorities.
7. Message switching. When the communications
processor serves more than one host computer, it will
analyze message headers and addresses and send each
incoming message to the proper destination. This
situation can occur when several computers share a
data communications network while each remains
dedicated to specific applications.
8. Message answering. Certain messages, such as simple
inquiries, can be completely processed by the
communications processor without any contact with
the central data processing system. Since many
communications processors permit attachment of online auxiliary storage units, these processors can store
and access their own private data bases. Some systems
also permit the communications processors to directly
access the auxiliary storage subsystems and data files
of the host computer.
9. Message recording. Vital inbound messages can be
passed on to the host computer while being
simultaneously recorded in the communications
processor's auxiliary storage. Such message recording
can assist in system restart operations in case the
central system should malfunction and lose either its
messages or the results of processing the messages.
Also, it may be advisable in some systems to store a
journal record of every message received during each
processing period.
10. Statistics recording. The communications processor
can keep a running record of all data communications
traffic, including such statistics as total number of
messages processed, number of messages delivered to
each destination, number of line errors,. average
length of time in queue, number of busy signals, etc.
These statistics can be dumped on demand or in the
form of reports at the end of each processing cycle.
Other application-oriented functions can be programmed
by the communications processor supplier, by the user, or
by some combination of the two. It must be remembered,
however, that the communications processor, like the host
computer, has only a finite amount of processing power.
The more functions that are added to it in order to relieve
the host computer, the more likely it is to run out of power,
especially in active, growing communications networks. A
communications processor pushed beyond its capacity will
result in lost messages and, ultimately, in system failure.
Advantages of Communications Processing
Communications processors are enjoying increased
popularity in various parts of data communications
systems because they are proving to be more and more
effective on a price/ performance basis. Factors that
contribute to their price/ performance edge include the
following:
I. Flexibility. Communications processors are designed
to handle many line speeds and transmission
characteristics in uniform or interchangeable circuitry
and to support a wide variety of remote terminals from
the mainframe and independent suppliers, regardless of
their transmission speeds, line control conventions,
synchronization techniques, and data codes. Because
they can be modified at any time and at comparatively
low cost by user or vendor, they are eminently well
suited to handling key roles in data communications
systems, which are typically characterized by
bewildering variety and constant change. As advances
in communication line facilities are made by the
common carriers and as new, faster, and lower-cost
transmission services are offered by the independent
companies, the communications processor's flexibility
becomes eminently important in guarding against
system obsolescence.
2. ExpandabilitJ'. Communications processors permit
relatively easy growth of the data communications
network, principally by adding line interface units and
modifying the control programs.
3. Distribution of labor. These processors can be
programmed to perform varying amounts of productive processing, often in conjunction with their own online peripheral devices, they can share portions of the
overall processing load with other processors in the
system-including the central processor. Peak loads
can be more effectively handled and critical bottlenecks
more likely avoided. In the case of a front-end
processor, controlling the entire data communications
subsystem will relieve the system's central processing
unit on two counts: processing time and main memory
space. Central control of data communications
networks can consume 40 to 50 percent of the available
processing time in typical situations. The resident
software control routines can easily consume in excess I>
The CA20 Terminal Controller of Industrial Computer Controls
Incorporated replaces an IBM 3274 cluster controller in an IBM
3270 network and allows asynchronous devices to communicate
with the host processor as IBM 3278 terminals.
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C13-010-105
Processors
Communications Processors
4
~
~
of 50K bytes and fret/uently use up to 300K bytes or
more of main memory space, depending on the
functions performed. Efficient utili/ation of communications processors can provide almost full relief in both
processing time and memory space overheads. (If the
host processor is not overburdened, the need for'a
programmable unit may be harder to justify.)
4. Fail-soli capahility. In data communications systems
that include at least one other computer, programmable communications proccssors can provide some
form of continued system opcration when one or more
of the other computers become inoperative. The degree
and effectiveness of this fail-soft capability depend not
only on the capabilities of the processor, but also,
perhaps more importantly, on the skill displayed by the
system architect in making provisions for redundant
components and hill-back procedures.
5. Independent processing. When communications
processors are not involved in their principal data
communications tasks, they can often be used as standalone data processing systems if their configuration includes some peripheral input, output devices. Simple
media conversion tasks, such as card-to-tape and tapeto-print, can be valuable by-products from these otherwise communications-oriented processors, and localized
time-sharing can yield added benefits. In off-line mode,
the processor can also be adapted to serve specialized
I/O devices, sueh as plotters and OCR devices, that the
central system may not be able to handle.
Potential Problems
Communications proeessors deserve careful investigation
because of the vast variety of et/uipment currently
available. Such investigations should inelude as many
probing questions as possible, because there are
potentially serious pitfalls to be avoided.
One potential problem is that of overloading the
communications processor, with the resultant loss of data.
Sophisticated data and message control programs will
consume large quantities of the communications
processor's computing and memory facilities, just as they
do in a centrally-based communications system. A
tendency toward overloading can easily negate any
apparent advantages of expandability and growth
potential.
Another vital issue is software. The body of software
ret/uired for terminal control, line control, and message
control activities, not to mention application-oriented preprocessing, is unquestionably complex. The prospective
user must determine whether or not the supplier is capable
of supplying this software, at what level of completeness,
with what assurance of bug-free stability, with what
chances of interfacing smoothly with the central system
software, and with how much installation assistance.
Obviously, if the software doesn't work properly, the
system is of little value. From another point of view, a
system whose software works but performs very few and
very basic functions may be inadequate for present or
future needs.
Another consideration is that some communications
processor hardware/ software combinations may require
far more time and effort to install and start up than others,
especially when the supplier of the communications
processor et/uipment is different from that of the host
computer system. Apart from the traditional problems
(real or imagined) of divided vendor responsibility, there
exists the very real problem of integrating two completely
different sets of hardware and -software.
A currently operational data communications installation
that is considering replacing hard-wired communications
controller(s) with a more sophisticated communications
processor must carefully evaluate the problems of
conversion. Beyond the usual problems of data integrity
and the logistics of arranging the conversion process, the
user may also be faced with the prospect of modifying
either his central system control software or the body of
application programs that use the communications
network.
Evaluating a communications processing system on a
cost/ value basis is extremely complex and can be almost
meaningless when performed in the abstract. Costs will
vary with the size and diversity of the network being
controlled, with the size and processing power of the
communications processor, with the number of control
and preprocessing functions incorporated (software is
expensive, whether hidden in a "bundled" system price or
not), and with the number of on-line peripheral devices.
The M Z-80 uf Thomas l:.nKineerinK Company ('unne('ts a I'ariety
<>lASCII CRTs to a host system o\'er a hiKh-.lpeed line. Features
include pro/O('ol ('()fll'ersion, terminal and line ('on('entration.
terminal ('ontroller and devi(,e emulatiun. and lucal pru('essinK.
APRIL 1983
Adding functions that will permit use of "foreign"
terminals, relieve the central processor of intolerable
overheads, and allow independent and back-up processing 1:>
© 1983 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-106
Processors
Communications Processors
};> may increase the costs but will also increase the value. In
order to evaluate the cost of the communications
processor in terms of the potential cost savings throughout
the system, an effort must be made to associate specific
dollar figures with the expected values to be derived from
one data communications system versus another. In
summary, it should be clear that costs and values of
communications processing can be assessed only in terms
of specific situations and specific systems.
Sources of Supply
One of the most interesting aspects of the story on
communications processors is that computer users can
now obtain them from literally dozens of vendors, with
differing product implications depending on the source
selected.
Designers of the data communications system will
probably first contact the supplier of their present or
planned mainframe computer to investigate its offerings in
the area of data communications. If communications
processors are strongly promoted as the best (sometimes
only) way in which to construct efficient, fully supported
systems, the designers will usually go along with the
recommendations of the mainframe supplier. The
designers are comforted by the belief that their data
communications subsystem will be fully supported and
will interface efficiently with the central processing system.
It is in this regard that developments such as IBM's SNA
and DEC's DECnet increase in importance to systems
designers.
But not all mainframe suppliers are equally advanced in
their data communications product line, and not all offer a
selection of communications processors supported with
product-line software. Users not fully satisfied with the
offerings of their mainframe supplier can investigate the
wares of other promising suppliers, most of whom offer
assurances that their communications processors can be
"plug-compatible" with either the hard-wired or
programmable communications controllers of the
mainframe supplier, or at least with its data communications hardware and software interfaces.
The minicomputer manufacturers constitute one
prominent group of suppliers who are actively pursuing
the communications processor market with products that
can either stand alone or interface smoothly with the
mainframe equipment of other suppliers. Almost any
currently marketed minicomputer is capable of serving as
the fundamental building block of a communications
processor, and many include communications hardware
and specialized software packages to permit them to serve
effectively as complete communications processing
products.
A major source of integrated communications processing
products is the independent systems houses, especially
those that specialize in data communications systems.
Companies such as these will generally provide complete
hardware/ software packages, including communications
and central computer interfaces. In many cases they will
accept full responsibility for the design and implementation of the entire data communications system. Such
independent companies are generally well qualified in
producing effective data communications systems, but
prospective buyers of such systems must still consider the
effects on the total system of dividing responsibility
between at least two principal suppliers (communications
and central system) and assure themselves that the
products and systems of the several involved suppliers will
indeed interface properly and function harmoniously.
Regardless of which type of supplier is selected, the buyer
should show partiality to those vendors who will not only
guarantee turnkey installation of their equipment but will
also provide plans for future growth. If the user is faced
with the formidable task of interfacing and integrating a
variety of impressive but highly dissimilar communications and processing equipment, the proposed system
may never get past the design stage.
Buying Guidance
The communications processing products have not
matured to the point where their descriptive terminology is
standardized or consistent. As a result, prospective buyers
must make every effort to determine exactly what they will
be getting and what they will not. The sales brochures and
technical manuals are often not sufficiently informative
(and sometimes downright misleading).
For example, two distinctly different kinds of front-end
processors exist. The first and more basic variety is
designed to simply replace the functions and services of the
central system's hard-wired controller.. It is meant to be a
plug-compatible replacement, requiring few, if any,
changes to the central system's communications control
software or the user's application programs. It does not
necessarily relieve the central system of any software
control overheads, but simply provides a more flexible
interface to the communications network for accommodation of additional and varied lines and terminals in
the future.
Examples of this type offront-end processor are the many
available units designed to replace or "emulate" the IBM
2701 Data Adapter Unit and the IBM 2702 and 2703
Transmission Control Units. These front-end processors
function with the IBM System/360 or System/370
computer systems through the standard IBM BTAM,
QT AM, TCAM, and VT AM communications control
software.
The second and more powerful variety of front-end
processor is designed to replace not only the functions and
services of the hard-wired controller, but also most or all of
/
the data communications control functions normally
\.
performed by the central system's processing unit and
resident software. This variety of front-end processor, by
freeing the central processing unit for productive work, t>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
---
------
APRIL 1983
C13-010-107
Processors
Communications Processors
(
1::> provides valuable advantages in data communications
flexibility and in systems throughput.
It is possible that a user may want to install the basic kind
of front-end processor initially and then gradually add
functions to it to relieve the central processing unit's
communications overheads. However, the user must make
sure that the selected front-end processor has enough
processing and memory capacity to permit the gradual
build-up of substantial message control routines, and that
the various responsibilities of both the vendor and the user
are clearly assigned.
In the case of systems performing line concentration,
network node, and remote processing tasks, an equally
wide range of capabilities is represented by current product
offerings.
Another buyer's tip is to look for the word "turnkey."
Turnkey installation of communications processors
usually means that the supplier takes on full responsibility
for hardware, software, and interfaces required to
essentially "plug in" the product. From a user's point of
view, this approach is highly desirable, since it can save
money, time, and aggravation. But the user must still
evaluate the promised functions of a product being offered
on a turnkey basis. It may still be a somewhat limited
product.
A low list price can be totally misleading, since it may
include only the basic processor hardware and an
associated communications mUltiplexer. The cost and
effort of establishing the proper interfaces and writing the
all-important software can be dropped squarely on the
buyer, who may have been trapped by an attractive lowprice bid.
Since software development is such a critical question, the
buyer should determine early in the proceedings exactly
what software is provided with the basic system and at the
basic price. If certain software is lacking, such as specific
remote terminal handlers or message queuing routines,
then implementation and integration responsibilities
should be clearly fixed, and with firm price quotations.
The smart buyer will also ask the competing bidders for
clear statements of service and support after installation.
Because data communications subsystems can be complex
and demanding in any environment, it is an extremely
valuable system feature to have the prospective supplier of
the communications processor assume full operating
and service responsibility for the externally controlled
communications network that is directed by the product.
When considering a communications processor from a
source other than the supplier of the central computer
equipment, the buyer should insist on receiving concrete
performance data, drawn from installed systems, to
substantiate the supplier's claims. The buyer should
beware if the supplier refuses to verify his claims with
actual case studies. As further evidence of proven
APRIL 1983
performance, the buyer should personally contact as many
previous users as possible, probing for their degree of
satisfaction and also for the extent to which the installed
systems reflect the buyer's own intended system design and
functional objectives. However, even in highly specialized
reference accounts, meaningful information can be
derived regarding the supplier's competence and
willingness to· help and the basic reliability of the
hardware / software package.
When the proposed supplier is a major mainframe
manufacturer, the buyer will also want evidence of proven
performance. This evidence should apply to the overall
performance of the total, integrated data processing
system, and not just the communications subsystem.
When the mainframe supplier offers a choice of several
levels of processing capability (as several now do), then the
buyer will again want specific, tangible performance data
to justify selection of one over the other. Of course, the
mainframe supplier can forcibly persuade adoption of one
model over the other, even without offering convincing
performance data, by simply indicating that the newer
product will receive all future support and that the former
one will be essentially dropped from the product line.
User Experience
Datapro is proud to present the 1983 edition of our
Network Users Survey. The survey is based on results
received from questionnaires mailed to a cross-section
of Data Communications magazine subscribers.
Survey Methodology
A questionnaire was designed and produced by Datapro
and mailed by Data Communications personnel in
November 1982 to approximately 10,000 addresses
selected at random from a cross-section of Data
Communications' U.S. end-user subscriber base.
The questionnaire contained 37 questions, and was
divided into six basic parts. In the first part, users were
asked to provide information concerning the general
characteristics of their data communications networks. In
each of the remaining five parts, the users were asked to
specify within a given category the types of data
communications equipment and services being used in
their networks, and to provide usage information and
equipment ratings on each type. The five categories of
equipment/ services included: transmission facilities,
communications and network processors, modems, line
multiplexers, and testing and monitoring equipment. The
questionnaire allowed the user to rate up to two (or in
some cases, three) vendor/model types within each
category of equipment. (Reproduction of the form was
permitted so that additional vendor/model types within a
given product category could be rated.) The results of each
of these five parts will be shown only in the Datapro report
to which they are applicable. This report contains a
summary of the user ratings provided by respondents to
the Communications and Network Processors section. I:>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-108
Processors
Communications Processors
TABLE 1. USERS' RATINGS OF COMMUNICATIONS PROCESSORS
Communication
Processor Manufactu re,
Number
Number
of User
ot Units
Installed
Responses
and Model
-
WA
E
G
. Ease of
Operation
Ea~of
Overall
Perionnance
Installation
F
P
WA
E
G
F
P
WA
E
7
1
8
G
Ease of
Expansion
F
P
WA
E
\r-
G
F
P
Amdahl
4705
Others & unspecified
Subtotals
14
5
19
24
14
38
5
14
3
5
7
11
45
5
22
5
158
15
187
392
3
4
7
3.6
3.4
3.5
4
3
7
1
0
1
0
0
0
3.3
3.0
3.2
5
8
1 3
6 11
1
1
2
0
0
0
3.4
3.0
3.3
6
3
9·
1
1
2
0
0
0
3.3
3.2
3.3
6
6
1 4
7 10
2
0
2
0
0
0
3.2
1 4
3.6 8
6
3.7
2
1
3.0 1
3
3.4
3 4
3.3
3 8
3.4 18 26
0
0
0
1
0
0
1
.0
0
0
0
0
0
0
3.4
2
3
3.1
7
3
3.3
2
0
1
2.6
2
3.0 0
6
2.9
2
6
3.0 14 20
0
2
1
1
0
3
7
0
2
0
1
0
0
3
3.6
3
2
3.4
6
7
3.0
1
1
,;
4
2.8
2.9
1 4
3.2
3
7
3.2 14 25
0
1
1
0
0
.0
0
0
0
2.8
3.1
2.7
2.6
2.7
2.7
2.8
1
2
5
5
1
1
0
4
0
6
2
5
9 23
2
4
0
0
0
3
9
0
0
1
1
1
1
4
21
4
25
3.7
3.5
3.6
2
2
4
1
2
3
0
0
0
0
0
0
3.3
3.5
3.4
1
2
3
2
2
4
0
0
0
0
0
0
3.3
3.3
3.3
1
1
2
2
3
5
0
0
0
0
0
0
2.3
3.3
2.9
0
2
2
1
1
2
2
1
3
0
0
0
5
11
16
9
47
56
2.6
2.7
2.7
0
4
1
7
1 11
0
2
2
1
1
2
2.6
2.7
2.7
0
0
0
3
8
11
2
3
5
0
0
0
3.2
2.7
2.9
2
0
2
2
8
10
1
3
4
0
0
0
3.0
2.2
2.4
1
0
1
3
4
7
1
5
6
0
2
2
3
257
3.0
0
3
0
0
2.7
0
2
1
0
3.0
1
1
1
0
3.0
1
1
1
a
7
3
10
19
23
42
3.0
3.7
3.2
2
2
4
4
1
5
0
0
0
1
0
2.9
3.3
3.0
1
1
2
4
2
6
2
0
1
2
0
0
0
3.1
3.0
3.1
2
0
2
4
3
7
1
0
1
0
0
0
3.4
3.3
3.4
3
1
4
4
2
6
0
0
0
0
0
0
4
6
9
6
3
5
7
40
26
48
175
18
7
20
115
409
3.5
3.3
3.3
3.2
3.3
3.4
3.3
3.3
2
2
4
1
4
4
1
5
1
2
2
3
2
5
16 22
0
0
1
0
0
0
0
1
0
1
0
0
0
0
0
1
3.8
3.0
3.0
3.2
3.0
3.2
3.1
3.2
3
1
2
2
2
5
1
5
0
3
1 4
1
6
10 26
0
2
2
0
0
0
0
4
0
0
0
0
0
0
0
0
3.8
3
1
3.2
4
0
3.2
2
7
3.2
2
3
3.0 0
3
3.0 2
1
2.9
1 4
3.2 14 19
0
1
0
1
0
2
2
6
0
1
0
0
0
0
0
1
2.5
1.8
3.3
3.3
2.3
2.6
2.7
2.7
3
0
1 0
4
3
2
3
1 0
0
3
1
3
9 15
0
2
1
1
1
2
3
10
1
3
0
0
1
0
0
5
3
9
3.3
1
2
0
0
2.7
0
2
1
0
2.3
0
1
2
0
3.0
1
1
1
0
3
7
10
175
28
203
2.3
3.0
2.8
0
1
1
1
5
6
2
1
3
0
0
0
3.3
2.4
2.7
1
1
2
2
2
4
0
3
3
0
1
1
2.7
3.0
2.9
0
2
2
2
3
5
1
2
3
0
0
0
2.7
2.8
2.8
0
0
1
1
2
a
0
2
5
7
4
7
3
14
109
18
13
140
3.8
3.6
3.0
3.5
3
4
1
8
1
3
1
5
0
0
1
1
0
0
0
0
3.5
3.4
3.7
3.5
2
3
2
7
2
4
1
7
0
0
0
0
0
0
0
0
3.8
3.4
3.7
3.6
3
3
2
8
1
4
1
6
0
0
0
0
0
0
0
0
3.5
3.4
3.5
2
3
1
6
2
4
1
7
0
0
0
0
0
0
0
0
6
9
9
7
31
15
39
24
199
277
3.3
3.0
3.0
2.7
3.0
2
4
2
5
1
7
0
5
5 21
0
2
1
2
5
0
0
0
0
0
3.3
3.0
2.9
2.4
2.9
3
1
1
0
5
2
7
6
3
18
1
1
2
4
8
0
0
0
0
0
3.5
2.8
2.9
2.4
2.9
3
3
7
0
0
8
2
1
4 20
0
2
1
3
6
0
0
0
1
1
2.8
3.1
2.8
2.0
2.7
1
2
1
0
4
3
6
5
2
16
2
1
3
0
0
0
2
2
280
19
12
4
3
7
9
8
342
1125
22
30
40
10
8
14
9
1258
3.5 149 121
9
0
3.5 10 9
3.2
6
2
3
3.5
3
1
0
3.7
2
1 0
3.3
2
0
5
3.4 4
5 0
3.5
5
2
1
3.5181 146 13
1
0
1
0
0
0
0
0
2
3.0 69153 46
3.3
7 10 0
2.8
1
8
3
3.3
2
1
1
3.3
1
2
0
3.1
3
3 0
3.4
4
5 0
3.1
2
5
1
3.1 89187 51
6
1
0
0
0
1
0
0
8
3.0 81 137 48 11
3.2
1
7
9
1
3.0 3
6
3 0
3.0
2
1 0
1
3.3
1
2 0
0
3.3
4
1
2 0
3.2
3 5
1 0
3.0 3
2
3 0
3.1 104 163 58 13
2.7 46120 88 20
2
7
6
3
2.4
3.1
5 4
2
1
3.3
2
1
1 0
2.7
1
1
0
1
3.1
0
1
3
3
3
4
2
0
3.1
1
1
2.0
3
3
2.7 63141 102 29
17
35
3.4
11
2
3
1
3.1
7
4
6
0
3.1
8
4
4
1
2.6
6
2
5
4
5
3
8
8
13
21
3.2
4.0
3.5
1
3
4
4
0
4
0
0
0
0
0
0
3.0
4.0
3.4
1
3
4
3
0
3
1
0
1
0
0
0
3.2
4.0
3.5
1
3
4
4
0
4
0
0
0
0
0
0
3.0
3.3
3.1
1
1
2
3
2
5
1
0
1
0
0
0
6
45
3.0
1
4
1
0
3.0
1
4
1
0
3.2
1
5
0
0
2.8
1
4
0
1
3.6 8
6
3.7 7
3
3.6 17 10
3.1
6
7
3.5 38 26
0
0
0
2
2
0
0
0
1
1
3.1
4
7
3.4 5
4
3.2
8 14
2.9
7
3
3.1 20 32
3
1
4
3
11
0
0
0
1
1
3.2
7 4
3.2
6
3
3.2 11 11
2.9
3
8
3.1 24 29
2
1
3
4
10
1
0
2
0
3
3.1
3.3
3.3
2.5
3.1
5
4
11
.2
22
6
5
13
8
32
3
1
3
1
8
0
0
0
9
2
11
Burroughs
81000
8874
CP3680
CPSOOO
DCP
Others & unspecified
Subtotals
CCI
CCBV
Others & unspecified
Subtotals
Control Data
2551
Others & unspecified
Subtotals
Data General, all Models
DCA
355
Others & unspecified
Subtotals
DEC
PDP 11/20
PDP 11/40
atoer PDP II Models
VAX II
1134
1170
Others & unspecified
Subtotals
Gandaff PACX
1
2
1
6
,
GTE Telenet
TP 3010
TP4000
Subtotals
0
0
Hewlett~Packard
HPlooo
HP3000
Others &. unspecified
Subtotals
Honeywell
Datanet 6661
Level 6
6000
Others & unspecified
Subtotals
IBM
3705
3704
Series!1
8100
System 7
4331
4341
Others & unspecified
Subtotals
Memorex 1270
.
3
9
Micom
600
Others & unspecified
Subtotals
Modcomp. all models
NCR Comten
3650
3670
3690
Others & unspecified
Subtotals
-
14
10
27
16
67
'------
85
36
137
93
351
--
----_._--
4
4
..
LEGEND: Weighted Average (WA) is based on assigning a weight of 4 to each user rating of Excellent (E), 3 to Good, 2 to Fair, and 1 to Poor (P).
'Weighted Average for less than 3 responses is considered invalid.
*'Memorex 12~O Quality of Manufacturer's Software/Firmware and Ease of Programming responses were judged invalid because the unit is hardwired.
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
i
C13-010-109
Processors
Communications Processors
TABLE 1. USERS' RATINGS OF COMMUNICATIONS PROCESSORS
--.--.
r----
and Model
Amdahl
4705
Others & unspecified
Subtotals
Quality of
Manufactu rer's
Software/Firmware
Hardware
Reliability
Communication
Processor Manufacturer
WA
E
G
F
P
3.6
3.4
3.6
9
2
11
5
3
8
0
0
0
3.2
3.6
3.7
3.2
3.4
3.0
3.3
1 4
9 4
2
1
2
2
3 4
2
7
19 22
-
WA
E
G
0
0
0
3.2 4
3.2 1
3.2 5
6
4
10
0
1
0
1
0
2
4
0
0
0
0
0
0
0
3.2
2.7
3.0
2.0
3.0
2.8
2.8
0
2
Ease of
Programmin9
Quality of
Quality of
Manufacturer's
Maintenance Service
Manufacturer's
Technical Support
-.- 1---,:",--
P
WA E
G
0
0
0
2.8
3.3
2.9 4
4
2
0
2
0
o
WA E G
F
~-----
F
P
4
1
0
1
3.2 8
3.4 2
3.310
3
1
1
1
3
9
0
1
0
3
0
1
5
3.2
26
3.3
2.8
26
2.5
27
1
0
1
0
0
0
3.0 0
3.5 2
33 2
2
1
3
1
2
3
0
4
P
-
WA E
G
F
P
3
3
6
3
0
3
1
0
1
0 3
2
0
7
2
1 0
2
1
1
0
0
1
3
2
3
3
4 15 12
0
5
0
3
3
3
14
3
3
6
1
0
1
2
0
2
31 6
3'4 2
3.2 8
1 4
1
9
1
2
1
2
4
0
2
2
6 23
0
2
0
2
3
6
13
0
2
0
0
0
1
3
2.6
21
2.7
2.0
17
2.4
2.2
3
2
5
0
0
0
0
0
0
20 0
3.5 2
2.9 2
0
2
2
3
0
3
0
0
0
2.4 0
3.0 2
2.8 2
3
8
11
1
0
1
1
1
2
2.2
2~
0
0
2.3 0
2
6
8
2
2
4
1
2
3
Burroughs
81000
B874
CP3680
CP9000
DCP
Others & unspecified
Subtotals
CCI
CC80
Others & unspecified
Subtotals
Control Data
2551
Others & unspecified
Subtotals
Data General, all models
DCA
355
Others & unspecified
Subtotals
DEC
PDP 11/20
PDP 11/40
Other PDP 1 1 models
VAX 11
1134
1170
2 2
2
8
1
1
0
2
3
2
2
6
10 21
3.0
3.5
3.3
0
2
2
3
2
5
0
0
0
0
0
0
3.0 1
3.5 2
3.3 3
1
2
3
2.4
2.4
2.4
0
0
0
3
6
9
1
3
4
1
2
3
2.0 0
2.4 1
2.3 1
1
5
6
3.0
0
3
0
0
2.7
0
2
2.7
3.6
3.0
1
2
3
4
1
5
1
0
1
1
0
1
2.4 0
3.3 1
2.7 1
4
2
6
3
1
2
3
4
4
3
3
1
2
1 3
1 4
15 20
0
1
1
0
0
1
2
5
0
0
0
0
0
0
0
0
3.3 1
2
2.3 1 0
2.8 2
4
3.0 1
4
3.3 1
2
3.2 2
2
2.7 0
6
2.9 8 20
8
6
3.2 1 4
2.8 2
0
1.6 0
3.4 4
2.8 3
4
2.810 18
1
0
0
0
0
2.7 0
3.7 2
3.2
4
2.0 0
2.3 0
2.2 0
0
3.0
1
0
3.0 0
3
0
0
3.0 0
3
0
0
1
0
2 ., 0
0
2.3 0
4
1
5
0
0
0
2.4 0
2.7 0
2.5 0
4
2
6
2
1
3
1
0
1
2.4 0
2.7 0
2¥ 0
4
2
6
2
1
3
1
0
1
0
1
3.3
2.8
3.1
3.0
2.7
2.8
3.0
3.0
1
5
9 22
0
1
0
1
1
2
1
6
0
1
1
0
0
0
0
2
2.8
2.7
2.3
2.7
3.0
3.5
2.3
2.7
0
3
1
3
2
2
0
5
0
3
2
2
0
3
5 21
1
1
2
0
0
0
2
6
0
1
3
1
0
0
1
6
2~ 0
2.8 1
2.4 1
2.5 1
2.7 0
3.2 2
2.1 0
2.6 5
3
4
4
2
2
2
2
19
1
0
2
2
1
1
4
11
0
1
2
1
0
0
1
5
0
0
0
0
3.3 1
2
0
0
3.3
1
2
0
0
4
0
1.3 0
2.3 0
1.8 0
0
2
2
1
0
1
2 - 1.7 0
1
2.5 0
2.2 0
3
0
3
3
2
3
5
1
0
1
1.3 0
2.2 0
1.9 0
0
1
1
1
5
6
2
0
2
3.7
3.4
1
4
1
6
0
0
0
0
0
0
0
0
3.3
3.6
3.3
3.4
1
4
2
7
3
3
0
6
0
0
1
1
0
0
0
0
2.8
3.0
3.0
2.9
1
2
1
4
1
3
1
5
2
2
1
5
0
3
0
0
0
0
0
0
0
2
2.6
2.9
2.8
1.8
2.6
5
0
13
1
1
3
3
8
1
0
0
1
2
3.5
2.9
2.8
2.1
2.8
3
3
2
4
1
6
2
0
6 15
0
3
1
4
8
0
0
1
1
2
3.0 1
2.4 0
2.7 1
1.6 0
2.4 2
4
4
5
0
13
1
5
2
4
12
0
0
1
3
4
4
0
2.628 106 7 6 23
2
2
2.7 2 11
8
4
2.7 0
0
0
2.5
3
0
1
0
0
1
0
2.7 0
1 0
3.0
5
2.2 0
0
2.633138 9 1 27
3.3112 36 27
1
·3.4 10
6
3.1 3
7
2
3.3 2
1
1
2.7 1
1
0
2.9 2
2
3
3.0 2
5
2
2.9 2
3
3
3.3134161 39
3
1
0
0
1
0
0
0
5
3.0 74 133 56 10
7 4
1
3.0 6
3.2 4
6
2
0
1
3.3 2
1 0
2.0 1 0
0
2
2.4 1
3
1
2
2
6
1 0
3.1
2.5 0
5
2
1
3.0 90161 67 16
4
0
0
1
0
1
0
1
0
Subtotals
3.8
3.2
3.3
3.5
3.3
3.0
2.9
3.3
Gandalf PACX
3.3
1
2
0
0
2.7 0
2
2.0
3.0
2.7
0
2
2
1
3
4
1
2
3
1
0
1
1.3 0
2.3 0
2.0 0
0
2
2
3.8
3.6
3.3
3.6
3
5
2
10
1
1
0
2
0
1
1
2
0
0
0
0
3.0 1
3.4 4
3.0 1
3.2 6
2
2
1
5
3
3
1
6
1 7
0
5
5 21
0
2
1
2
5
0
0
0
0
0
2.8
2.8
2.9
2.0
2.7
181 83 10
10 7
1
:i 2
7
3 0
0
1 0
2
6
1 0
4
5
0
6
1
1
218100 16
1
0
0
1
0
0
0
0
2
3.1 78 162 31
3.3 6 12
0
2.8 2
6
3
3.0 2
1
0
2.7 1
1 0
2.6 1
3
3.1 2
6
3.0 1
1
6
3.1 93 197 38
Others & unspecified
GTE Telenet
TP 3010
TP4000
Subtotals
0
0
0
4
1
0
4
4
4
Hewlett~Packard
HP1000
HP 3000
Others & unspecified
Subtotals
Honeywell
Oatanet 6661
Level 6
6000
Others & unspecified
Subtotals
IBM
3705
3704
Series/1
8100
System 7
4331
4341
Others & unspecified
Subtotals
Memorex 1270
3.5
2.9
3.0
2.7
3.0
3.6
3.5
3.4
3.3
2.7
3.9
3.4
3.6
3.6
1
3
0
7
1
6
2
0
2 18
2
1
0
0
8
3.5
..
1
0
1
0
3.4
11
2
3
1
..
6
4
3
3.6
4.0
3.8
3
3
6
2
0
2
0
0
0
0
0
0
3.2
4.0
3.5
1
3
4
4
0
4
0
0
0
0
0
0
2.6
4.0
3.1 4
2.8
1
3
2
0
3.2
1
4
0
0
9 4
5
3
16 11
4
9
34 27
1
2
0
0
3
0
0
0
3
3
2.9 6
3.0 3
2.9 7
2.8 2
2.9 18
3
4
11
10
28
U
0
0
1
1
31
7
4
6
0
29
6
4
6
1
3
0
3
0
0
0
2.4 1
4.0 3
3.0 4
1
0
1
2
0
2
1
0
1
2.6
4.0
3.1
1
3
4
1
0
1
3
0
3
0
3.2
b
0
3.2
5
0
0
2.8
1
4
0
1
3
2.6
4
2.8
2.6 1 13
8
2.4 0
2.6 4 28
4
3
8
2
7
1
0
1
3
5·
3.4 7
6
4
3.0 3
3.312 11
2.9 4
8
3.226 29
1
3
2
2
8
0
0
1
2
3.0 6
3
4
2.7 2
4
3
2.8 8
7
9
2.6 0 10
5
2.8 15 24 21
1
1
2
1
5
4
Micom
600
Others & unspecified
Subtotals
Modcomp. all models
1
0
1
0
0
NCR Comten
(
3650
3670
3690
Others & unspecified
Subtotals
3.6
3.3
3.6
2.9
3.4
--'--.--
0
14
___.1 _____
3
LEGEND: Weighted Average (WA) is based on assigning a weight of 4 to each user rating of Excellent (E). 3 to Good. 2 to Fair. and 1 to Poor (P).
*Weighted Average for less than 3 responses is considered invalid.
**Memorex 1270 Quality of Manufacturer's Software/Firmware and Ease of Programming responses were judged invalid because the unit is hardwired.
APRIL 1983
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-110
Processors
Communications Processors
TABLE 1. USERS' RATINGS OF COMMUNICATIONS PROCESSORS (Continued)
Communication
Processor Manufacturer
and Model
of User
Number
of Units
Responses
Installed
Number
Overall
Performance
WA
Paradyne, all models
4
Periphonics TCotnm 7
Prime, all models
Sperry
CSP
DCP/40
V76
V77
Others & unspecified
Subtotals
Tandem
Non-Stop II
Others & un.specified
Subtotals
All Others
Grand Totals
Ease of
Installation
E
G
F
P
WA
E
G
F
P
WA
E
G
F
P
2.8
0
3
1
0
3.8
3
1
0
0
3.8
3
1
0
0
0
2.8
0
3
1
0
3.0
1
2
1
0
2.5
0
2
2
0
0
3.2
2
2
1
0
2.8
0
5
1
0
3.0
1
3
1
0
2
2
1
1
2
8
0
0
0
0
1
1
2.4
3.0
2.7
2.7
2.8
2.8
0
1
1
1
1
4
2
9
1
1
3
16
3
1
0
0
0
4
0
0
1
1
1
3
2.4
2.5
3.0
2.7
3.2
2.7
2
0
0
6
1
1
1
1
2
3
4 13
3
1
0
1
9
0
1
'0
1
0
2
1.4
3.2
2.7
2.7
2.7
2.6
0
0
2
9
1 0
1
1
2
1
6 11
2
0
2
0
2
6
3
0
0
1
1
5
2
1
3
0
0
0
0
0
0
3.8
3.5
3.6
3
3
6
1
3
4
0
0
0
0
0
0
3.5
3.3
3.4
2
3
5
2
2
4
0
1
1
0
0
0
3.7
3.7
3.7
2
4
6
1
2
3
0
0
0
0
0
0
17 25
3.0
17 20 12
2
3.1
18 24
8
2
2.8
14
18
13
5
3.1 199389122
18
3.1 229362123
23
2.8 168317 181
61
G
F
P
4.0
4
0
0
0
4
6
3.0
0
4
0
6
199
3.2
1
5
0
5
11
3
3
6.
28
15
23
8
305
8
359
2.6
2.9
3.3
3.3
2.7
2.9
0
3
1
8
2
0
2
0
1
2
7 12
10
3.5
3.8
3.7
2
5
7
10
67
77
Ease of
Expansion
WA
E
5
4
6
.-
Ease of
Operation
52
1668
3.1
9
1
742
5606
3.4340 342 50
10
4
LEGEND: Weighted Aver,age 'MIA) is based on assigning a weight of 4 to ech user rating of Excellent (E), 3 to Good, 2 to Fair, and 1 to Poor (P).
*Weighted Average for less than 3 responses is considered invalid.
**Memorex 1270 Quality of Manufacturer's Software/Firmware and Ease of Programming responses were judged invalid because the unit is hardwired.
1:> When Datapro received the returns, they were audited by
our senior level editors. All forms were carefully examined
for validity before being sent for tabulation. The Data
Communications labels were used for initial validation
and identification. Responses to specific questionnaire
sections or individual questions were disqualif~ed
whenever a vendor/model identity was omitted, user
ratings were not assigned, a vested interest on the part of
the respondent was judged to exist, or incomprehensible or
unreasonable answers were given.
By the editorial cut-off of January 14, 1983, Datapro had
processed 699 valid forms, which were then shipped to
Mathematica Policy Research, Inc. for key entry and
tabulation by computer. Summary information was
prepared in the form of totals, percentages, or weighted
averages, as appropriate for each question. Weighted
averages were computed in a manner similar to most
college grading systems: "Excellent" is weighted as 4,
"Good" as 3, "Fair" as 2, and "Poor" as I. The tallied
numbers for each value were then multiplied by the
corresponding weight, and the average taken by dividing
the sum of the products by the total number of responses
for that category.
Datapro suggests that the reader use the information
presented with discretion. The individual equipment
ratings are not presented to readers as the major
consideration in making an acquisition decision. Rather,
the ratings and other information should be used as guides
to potential strengths and weaknesses that may call for
further investigation in selecting the most suitable
equipment for your needs.
The Results
The first part of the Network Users Survey consisted of
nine questions that solicited information of the general
characteristics of the users' networks. Taken together, the
results provide a brief summary of the extent and
complexity of these users' network configurations.
First, the users were asked to indicate the number of sites
that are linked by their networks, with the following
results:
I to 3 sites
4 to 10 sites
II to 25 sites
26 to 50 sites
Over 50 sites
Number of
Responses
Percent of
Responses
126
132
119
80
231
688
18
19
17
12
34
100
These results present a fairly even spread of network sizes,
with half the users in the l-to-25 site range, and the other
half in the 25-and-over range. Note that no distinction is
made here as to the type or intelligence of the devices
located at any site.
The second question asked the number of computers
participating as hosts, As you can see, nearly 60 percent of
these users are operating in multiple-host environments:
I host
2 to 4 hosts
5 to 10 hosts
Over 10 hosts
Number of
Responses
Percent of
Responses
191
328
97
71
687
28
48
14
10
100
This adds some degree of clarity to the responses to
Question I, as well as developing a better picture of the
level of sophistication of these users,
The users were also asked to indicate the total number of
end-user workstations (CRTs, teleprinters, etc.) that are in
use on their networks:
t>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C1 3-010-111
Processors
Communications Processors
TABLE 1. USERS' RATINGS OF COMMUNICATIONS PROCESSORS (Continued)
--,------Hardware
Communication
Processor Manufacturer
and Model
Quality of
Manufacturer's
Reliability
WA
E
G
F
P
WA
4.0
4
0
0
0
3.5
Pen phonics TComm 7
3.8
3
1
0
0
Prime, all models
3.2
1
5
0
1
4
1
2
2
10
1
Others & unspecified
Subtotals
2.4
3.1
3.0
3.3
3.2
3.0
Tandem
Non-Stop II
Others & unspecified
Subtotals
4.0
3.8
3.9
All others
3.1
Grand Totals
3.4
Paradyne, all models
---
Quality of
Manufacturer's
Maintenance Service
Ease of
Programming
Software/ Firmware
E G F P WA E
_--------
Quality of
Manufacturer's
Technical Support
G
F
P
WA
E
G
F
P
WA E
G
F
P
2
2
0
0
2
0
0
0
3.5
3
1
0
0
3.8
3
1
0
0
3.5
2
2
0
0
0
1
1
0
3.3
1
3
0
0
2.3
0
1
2
0
0
2.8
0
3
1
0
3.0
1
3
1
0
2.6
1
2
1
1
2.4
0
3
1
1
1
1
0
0
0
2
2.2
2.4
23
3.0
2.7
2.5
0
0
0
0
0
0
4
1
5
4
1
2
3 0
4
2
14 12
C'
10
2
1
1
1
1
6
1.3
1.7
2.0
2.0
18
1.7
0
0
1
1
0
2
0
2
0
0
1
3
1
2
0
0
2
5
2
5
2
2
2
13
2.6
2.8
1.7
1.7
3.3
2.6
0
1
0
0
3
4
3
7
1
1
2
14
2
3
0
0
1
6
0
0
2
2
0
4
2.2
2.5
2.0
2.3
2.5
2.4
0
0
0
0
1
1
2
6
1
2
2
13
2
4
1
0
2
9
1
1
1
1
1
5
4
5
9
0
1
1
0
0
0
0
0
0
3.5
3.5
3.5
2
3
5
2
3
5
0
0
~
1
3
4
0
2
2
0
3.5
3.2
3.3
2
3
5
2
0
2
0
2
2
0
1
C
3
1
4
0
0
0
3.8
2.8
3.2
1
3.0
3.0
3.0
2
2
4
1
2
3
0
2
2
1
0
1
19
21
9
2
2.9
10
26
13
1
2.7 11
16
9
8
2.7 12
15
16
6
2.7 10
18
13
7
384274
62
3.0177 384 119
36
2.7100 283 168
70
3 1 237 337 119
37
2.8161 313 183
67
...
Sperry
CSP
DCP/40
V76
V77
5
1
0
3
.
15
--- --
1
~
(
1
LEGEND: Weighted Average (WAl is based on assigning a weight of 4 to ech user rating of Excellent (E), 3 to Good, 2 to Fair, and 1 to Poor (Pl.
'Weighted Average for less than 3 responses is considered invalid.
"Memorex 1270 Quality of Manufacturer's Software/Firmware and Ease of Programming responses were judged invalid because the unit is hardwired.
Number of
Responses
1::>
I to 10
II to 25
26 to 100
100 to 500
OYer 500
41
46
123
250
224
684
Percent of
Responses
6
7
18
36
33
The implication of these figures can certainly not be
denied, that networks are growing in number and in size,
and becoming increasingly pervasive,
100
When examined in conjunction with Questions I and 2,
these results characterize the median respondent to the
survey as having a network configuration consisting of
approximately 25 sites, two or three hosts, and between
200 and 300 terminals (an average of 10 per site).
Although we are not in a position to draw any formal
conclusions, since this year's user sample consists of
different respondents than last year, some interesting
observations can be made when the two years' responses to
these three questions are compared. (The size of the
respondent group is approximately the same: 631
respondents in 1982 versus 699 respondents in 1983,)
For d-xample, this year's respondents' networks appear
larger in several respects:
• Number of sites--last year, only 25 percent of the
respondents reported networks of 50 or more sites; this
year, 34 percent indicate they are operating networks of
this magnitude.
• Number of hosts last year, only 14 percent of the
respondents stated that their networks contain 5 or
more hosts; this year, 24 percent reported on networks
of 5 or more hosts.
• Number of terminals-last year, 55 percent of the
respondents specified that their networks include over
100 terminals; this year, 69 percent indicated that their
networks had at least 100 terminals. Of this group, 24
APRIL 1983
percent of last year's respondents had networks with
over 500 terminals; this year's comparable figure is 33
percent.
Another question asked the users to identify the overall
network architecture with which their networks comply,
with the following results:
Number of
Responses
IBM BSC (non SNA) environment
IBM SNA
Digital Eljuipment DNA and DECnet
Hewlett-Packard DSN
Burroughs BNA
Honeywell DSE or DSA
Prime PrimeNet
Sperry Univac DCA
Other vendor-supplied architecture
None. or user-supplied architecture
328
274
48
26
19
17
17
16
127
125
Percent of
Total
Responses
48
40
7
4
3
2
2
2
19
18
The number of responses totals 997, indicating that a large
number of the respondents are using more than one of the
listed architectures in their networks. As we anticipated,
the largest group of users is still operating in an IBM BSe
environment. However, the gap of eight percent between
BSe responses and SNA responses continues to narrow
(last year, the gap was 14 percent), indicating that the
acceptance of that architecture is becoming more widespread, Interestingly, 18 percent of the resondents are not
complying with any vendor-supported architectural scheme, presumably either because their environments do not
currently require it (but potentially may in the future) or
because they have found other satisfactory alternatives .
The users were also asked to indicate the primary protocols supported by their networks:
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-112
Processors
Communications Processors
Asynchronous
IBM BSC
IBM SDLC
Other bit-oriented synchronous
protocol (e.g .. ANSI ADCCP. ISO
HDLC Sperry Univac UDLC or
Burroughs BDLC)
.
X.25 packet-lewl
Other byte-oriented synchronous
protocol (e.g .. DEC DDCMP)
Other
Number of
Responses
Percent of
Total
Responses
434
433
279
81
63
63
40
12
80
75
12
II
52
8
These results correlate to the results of the preceding
question, showing that a large number of users are using
more than one protocol in their network. ASCII and IBM
BSC are the most widely used protocols, with IBM SDLC
coming in a distant third place. The high response for
mUltiple protocol usage suggests that many of these users
are still in various stages of migration to SNA.
The users were requested to identify which vendors'
systems are functioning as hosts. The following list
summarizes their responses:
IBM
DEC
Amdahl
Burroughs
Hewlett-Packard
Sperry Univac
Honeywell
Prime
Data General
Control Data
NCR
National Advanced Systems
Other
Number of
Responses
Percent of
Total
Responses.
464
137
81
61
50
45
43
35
30
27
21
19
89
67
20
12
9
7
7
6
5
4
4
3
3
13
As expected, IBM came out well ahead of all other
vendors; however, DEC placed second with a strong
showing. Many of the users are using more than one
vendors' systems as hosts, indicating that the multiple-host
environments represented in Question 2 are frequently
multiple-vendor environments as well.
Apparently, at least 21 percent of all IBM mainframe users
surveyed rely on non-IBM communications processor
equipment. This may indicate that the IBM 3705 has
reached its maturity. IBM customers are looking elsewhere for increased functions.
Communication processor users were then asked to
specify what primary functions their equipment performed:
Front-end processing
Terminal controller functions
Remote line concentration
Applications switching
Distributed processing node functions
Message/ packet switching
Stand-alone network processing
X.25 PAD or gateway functions
Other
Number of
Responses
Percent of
Responses
465
238
161
119
88
74
71
54
II
67
34
23
17
12
10
10
7
I
The total percent of responses is more than 100 because
some users listed more than one primary function. These
figures reflect the increased versatility communications
processors now provide.
We also asked these users to indicate which, if any,
teleprocessing monitor software packages they are using.
Number of
Responses
IBM CICS and CICS/VS
Sperry Univac CMS CMS/IIOO
Cullinane IDMS-DC
Cincom Environ/I
Software AG Com-plete
SDA Intercomm or Minicomm
Westinghouse Westi
ADR Datacom/ DC
NCR VRX Tran-Pro
Other
None
294
17
14
12
10
8
6
6
4
113
180
Percent of
Total
Responses
43
2
2
2
I
I
I
I
I
16
27
1>
The same users were asked to identify which communications processor equipment they are using, with the following results:
IBM
NCR Comten
Burroughs
DEC
Honeywell
Sperry Univac
Amdahl
Memorex
Control Data
Other
Number of
Responses
Percent of
Responses
3212
67
45
40
31
28
19
17
16
137
46
9
6
5
4
4
3
2
2
18
/"
The leot 351 and 352 Virtual Terminal Systems, designed ~.
for communications processing, allow a mixture of
srnchronous and asrnchronous transmission lines at speeds up
t~ 19.2 K bps. M ;del 351 accommodates six asynchronous
terminal line connections; Model 352 accommodates twelve.
spec(fica/~1'
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C1 3-010-1 1 3
Processors
Communications Processors
The final question in the first part of the questionnaire
provided a list of ten possible sources of networking
problems, and asked the respondent to indicate whether
the had had any problems related to each possible source,
with these results:
Percent of Total Responses
111e Telepac J)PC oj Tele/ile Computer Products prol'ides an
inter/ace to X. 25-ha,\ed netl\'ork,\' or cOll1patihle (,()l1celllrators. It
supports all A 5;CII hosts amI terminals.
);>
These results indicate that, although I BM software is of
course predominant, various alternatives are sought out
by many users.
Another question requested that the users indicate any
commerical local networks which they operate, have
installed now, and any that they plan to implement in the
coming year.
Number of
Responses
Installed
Now
Xerox Ethernet
Datapoint ARCnet
Network Systems Corp. Hyperehannel
Prime Ringnet
Sytck l.ocalNet
Wang WangNet
Ungcrmann-Bass NdjOne
Interactive Systems/3M Videodata
Other vendors' Ethernet
Amdax CableNet
Nestar ,Cluster One
Other
Planncd
for 19~3
17
15
12
14
II
10
4
10
g
7
7
12
23
20
7
14
4
I
6
19
120
14
12
7
6
6
4
3
3
3
2
40
57
54
43
67
46
40
I.oeal loops
\'on-Ioeal comm. lines
Host software
Front-end software
Terminals
Terminal controllers
Front-cnd hardware
Host hardware
Modems
M ultiplexcrs
4~
56
23
\'0
problems
32
17
29
36
19
33
43
3X
35
46
Not unexpectedly, the area of these users' networks that
causes the most headaches is their communications lines.
Although few users experience severe or frequent
problems with their terminals, these devices seem to be the
greatest single source of minor or sporadic problems. The
least frequently experienced source of problems is
multiplexer equipment.
The remaining parts of the questionnaire focused on
specific categories of networking services and equipment.
Users were asked to list the specific vendors and types of
equipment they are using in their networks, and to provide
user ratings based on their experiences with each. Each
section of the questionnaire asked the user to provide the
manufacturers and model numbers of each type of
equipment currently in use, t~e number of units installed,
and ratings in specific categories of user experience
relevant to that specific equipment category. A summary·
'of the results of these questions for all communications
processor models is shown in Table I.
The Datapro Research staff extends a sincere thanks to all
for responding so enthusiastically to our 1983 Network
Users Survey. Without your participation, it could not
have been the terrific success it is, and we hope that this
compendium of user experience will be of significant value
to you. We look forward to hearing from you again.
34
T3()
Putting aside the possibility that a few users may have
indicated more than one type of local network,
approximately 17 percent of these users currently have a
local area network installed. This compares to last year's
comparable figure of 14 percent, representing a slight
increase. Depending on how many current users indicated
that they plan additional networks in 1983, (as opposed to
new users installing their very first local networks), the
1983 total of LAN users to as high as 370, or 39 percent of
all respondents.
APRIL 1983
I.ess se\'erc or
occasional
problems
~
5
2
Se\ere or
Fre4uent
Problems
Comparison Charts
The key functional characteristics of some 78 commercially available communications processors representing
40 manufacturers are presented in the accompanying
comparison charts. Most of the information in the charts
was supplied by the vendors during February 1983. The
Datapro Research staff greatly appreciates their cooperation in the preparation of this survey.
All of the comparison chart entries are explained in the
following paragraphs along with discussions of their
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-114
Processors
Communications Processors
function from the central processing unit and setting it up
as an external, largely self-contained system. The frontend processor not only receives and transmits all data
passing through the network, but also, and significantly,
can be programmed to pre- and post-process this data in a
variety of ways in order to relieve the system's central
processing unit from time-consuming overhead activities
related to message formatting and control. This
decentralized approach to the distribution of processing
labor permits both the communications and central
processors to perform their primary functions in parallel
and with little interference. Data is passed between the
processors only when necessary and with as high a degree
of efficiency as is possible in circuit design.
The modular Amnet Nucleus 6000 can be used as a remote line
concentrator or a host-independent netll'orkprocessvr, and
performs packet-sll'itching and ((rnamic routing in private
data nelll'Vrks.
1:> significance to prospective buyers of communications
processors.
Computer Systems Interfaced
The manufacturers and models listed show all computers
which may be interfaced by the communications processor
product shown. In the case of a front-end processor that
interfaces with IBM mainframes, we generally list only
current IBM computers, although the unit may also
support a System/360 or other older systems. The word
"compatibles" references IBM plug-compatible mainframe vendors. These vendors include Amdahl,
Magnuson, NAS, Control Data, and others. Some
vendors make custom interfaces while others use industrystandard connections. Both will be mentioned when
applicable.
Functional Configurations
A front-end processor is a computer which has been
programmed either by software or firmware for the
purpose of handling communications activity between a
host and its network. The front-end processor allows the
host to devote more valuable machine cycles to other
applications. The most significant application of
communications processors, in terms of both frequency of
use and level of complexity, is front-end processing.
The communications processor may replace a hard-wired
communications controller as the interface between the
central data processing system and the data communications network. The IBM 270X family and Memorex
1270 are examples of hard-wired controllers. (The
Memorex 1270, unlike the IBM 270X, remains in active
production; although this product is not a communications processor by our definition, we have included it in
these charts due to its immense popularity in and influence
on the current communications processor market).
The concept of front-end processing essentially involves
off-loading or removing the data communications control
A front-end processor is by definition directly channelattached to the host it is serving. This distinguishes the
front-end processor from a processor which helps to
perform similar off-loading responsibilities from a more
remote location.
Some front-end processors may be directly channelattached to more than one host. The maximum number of
hosts channel-attachable to the front-end specifies the
number of physical connections that may exist, and the
maximum number of active hosts supported simultaneously represents the number of concurrent logical
connections that a front-end is able to support. Some
front-end processors that permit two or more direct
channel-attachments allow only one channel to be active at
a time; the other channel(s) act only as a back-up in
emergency situations, or more frequently, during
maintenance operations. Other front-end processors can
maintain multiple active channel connections, either to
one, or to more than one, host, so that mUltiple host
applications or systems, each accessed by a dedicated
channel, may be serviced simultaneo·usly.
Many front-end processors feature the ability to provide
emulation of IBM's communications systems. This allows
the user to replace an aging IBM 270X communications
controller or 370X communications processor with a more
modern system, without requiring the user to rewrite
software which was developed long ago on the older
device.
A remote line concentrator is found at a remote location,
and compresses several communications lines into a single
high-speed line for transmission to the host. It differs
slightly from the multiplex! demultiplex process by being
more software intensive and providing. software compatibility with host(s) it is serving. The maximum
number of hosts served by one concentrator refers to the
number of hosts that the communications processor can
support concurrently in this remote configuration.
A host-independent network processor may reside
anywhere in the network and typically performs a wide
range of networking duties. Its function in the network is
transparent to end-user devices, and thus it provides no
software compatibility with any host. It may perform
concentration, protocol conversion, and switching 1:>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
',,---
APRIL 1983
-
C13-010-115
Processors
Communications Processors
I
TABLE 2. TERMINAL PROTOCOLS SUPPORTED
••.. _ - - - - - - , - , - >
Manufacturer /
Product Name
ASCII/
async./
Other
BitOriented
Protocols'
IBM
SOLC
IBM BSC
lTV
X.25
Packet
Level
Other Protocols Supported
-
Action/Honeywell
Mercury Message Mgmt. Sys
Yes
Yes
Yes
No
No
Amdahl 4705
Yes
Yes
Yes
No
GTE Telenet.
Tymnet Datapac
Yes
No
Yes
No
Yes
No
Yes
Yes (HDLC)
Yes
Yes
IBM 2741
X,75
Amnet Nucleus 6000
Yes
Yes
Yes
Yes
Yes
x'75, other PADs
Auscom 8911
Yes
Yes
Yes
Yes
Yes
Custom protocols available
on request
BBN Computer C/30-50
Yes
Yes
Yes
Yes
Yes
Telex
Braegen 840
No
Yes
Yes
No
No
-
Burroughs Corp.
CP9558-1/CP9572
CP3680/CP3680-01
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Cables hare
C51 Data Concentrator
Yes
No
No
No
Yes
LSI-X.25 Front-End
Yes
No
No
No
GTE Telenet Tymnet
Euronet
LSI-x'25 Int, Con cent
Yes
No
No
No
Yes
Yes
No
No
No
Centennial Computer
Corp. 2000/3000
Yes
Yes
No
No
Yes
Century Analysis OSI
Yes
No
No
No
No
Chi Comm. Processors
Yes
Yes
No
Yes (HDLC)
Telenet
Yes
Yes
No
No
No
8Al.8383, 85A SITA ARINC,
TWX, Telex
Amdahl Camm. Systems Div.
3400 Series
4410 Network Processor
LSI-X.25 Host Port
Concentrator
Codex 6520
Commex
DNP 4/6/16
CMC 4 & CMC 32
Yes
Early 1984
No
Most Burroughs protocols
Most B urroug hs protocols;
some IBM protocols
Uninet, Datapac,
PSS, Transpac, Data net,
Telepac, DATEX
Same as above, and Telex
Same as above, and Telex
Uniscope 100, 200, & 1004
~
Rem 1, NTR, Uniscope 100 &
200, UTS
Telex, & IBM 2741, 2848,
2260
Various POS & custom protocols
Yes
Yes
Yes
Yes
Early 1984
No
Yes
No
Yes
No
No
No
No
No
No
Telex
No
GTE Telenet, Tymnet Telex, 83B3
GTE Telenet, Tymnet Telex, 83B3, PARS, SABRE,
ARINC
-
Computer Commu nications
CC-6
CC-8
CC-80/85
Yes
Yes
Yes
Yes
Yes
Control, Data
2551-3 & 2551-4
Yes
Yes
No
No
GTE Telenet, Tymnet,
Datapac, Transpac,
BPO, ITT
-
Datastream
774
776
874
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
No
No
No
No
-
DCA 355
Yes
Yes
Yes
Ves
GTE Telenet
TP3005
TP3010
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
TP3010-11
TP4000 Series
Honeywell Datanet 8
I
I
GTE Telenet, Tymnet, DEC DDCMP-trunk only
Datapac, franspac, BPO
ITT, RCA
GTE Telenet
Yes (HDLC x'25)
Yes (HDLC X.25) GTE Telenet, Datapac,
BPSS, KDD
Telex
Yes (HDLC x'25)
Telex
GTE Telenel
Yes (HDLC X25
IBM 2741
GTE Telenet
Yes (HDLC)
I
I
GTE Telenet, Tymnet
+ 10 DDNs
l
*Other bit-oriented protocols include P"OCCP, HOLe, BOLe, nnd UDLC
APRIL 1983
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
VIP, PVE, RCI, LHDLC
,
C13-010-116
Processors
Communications Processors
_._-TABLE 2. TERMINAL PROTOCOLS SUPPORTED (Continued)
ASCIII
async.l
TTY
ManufacturerI
Product Name
IBM BSC
IBM
SDLC
,--.
IBM
3706-11 (E 1 thru L4)
3706-80
3725
Ves
Ves
Ves
Ves
Ves
Ves
ICCI
CA20BSC
CA20 SNA
Ves
Ves
ICOT
251
Other
Bit·
Oriented
Protocols*
X.25
Packet
Level
Other Protocols Suppprted
-
No
GTE Telenet
GTE Telenet
GTE Telenet
No
No
No
No
-
Ves
No
No
No
Ves
Ves
Ves
Ves
Ves
No
No
No
No
Tymnet, Telenet.
Uninet. PDNs
No
No
No
Ves
Ves
Ves
Ves
No
No
No
Future
Ves
Future
MIA-Com DCC
CP9000 & MicroNode
No
No
No
No
No
Memorex 1270
Ves
Ves
No
Via VAN
Telenet, Datapac,
PSS, Tymnet,
Transpac, DATEX- P
Modcomp 3108 & 3109
Ves
Ves
No
Ves
Ves
NCR Comten
3650 & 3670
3670 Model 85
Ves
Ves
Ves
Ves
Ves
Ves
Ves
Ves
3690 (A5-E5, T1!\.Jl)
Ves
Ves
Ves
Ves
Transpac, Datapac
GTE Telenet,
Tymnet. Uninet,
Transpac, Datapac,
Datex-P, UKPSS
Ves
721-11
Ves
Ves
Ves
'Yes
Yes.
25X (253, 254, 257)
352
35X
Lemcom Systems
CMC-4, CMC-8, & CMC-32
Distributed Network
Processor Series
Ves
Ves
Ves
No
No
Ves
No
No
Ves
Ves
Ves
No
I,
--
-
NCR;AIRINC
PARS, SITA, P1024, U400
Univac U400
Request price quotation
Request price quotation
Sabre, Swift, SITA
-
83B3
-
I
83B3
NCR BSC & in-house DLC
North American Philips
MARC
Ves
No
Ves
Ves (HDLe)
Ves
8383, Telex, & cidin
Paradyne Pix/Pixnet
No
No
No
Paradyne SDLC
No
-
Periphonics T-Comm 80
Ves
Ves
Ves
Ves
Optional
Raytheon
Raynet I, II, III, & IV
Ves
Ves
Ves
Ves
No
PARS, Univac, SITA
Sperry- Univac
DCP/40 & DCP/20
Ves
Ves
No
Ves
Ves
REM1, NTR
Requests for specific
interfaces will be
evaluated as needed,
if not standard products
Starnet Data Systems Protex
Industries Starnet II
Ves
Ves
To be released
To be released
To be released
Tandem Non-Stop II
Ves
Ves
Ves
Ves
Ves
Telefile
FECP-X
Telepac
Ves
Ves
Ves
Ves
No
Ves
No
No
No
All major U.S. and
European networks
Ves
Ves
Ves
Ves
Ves
No
No
No
No
No
Honeywell VIP
Honeywell VIP
Ves
Ves
Ves
No
Ves
Ves
No
No
Ves
No
No
Ves
No
No
Ves
-
Ves
Mid 1983
Mid 1983
Ves
Mid 1983
Thomas Engineering
MZ-80
8770120
TRT Data Products, Norfield
Comm.
System 300
System 400
System 500
Swift, Burroughs
-
/
Westinghouse Canada
W1655/666
PARS
'Other bit-oriented protocols include ADCCP, HDLC, BDLC, and UDLC.
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C13-010-117
Processors
Communications Processors
functions and, unlike a front-end processor or remote
concentrator, generally makes no distinction between
connections to terminals and connections to computer
ports.
A store andf(Jrward messa,;e nt"itchin,; processor is similar
to a network processor because it, too, is usually hostindependent. Unlike the network processor, however, it
performs no data manipulations. It simply receives strings
of numerics and/or characters (messages), deciphers the
add ress for whom the message is intended and relays the
unopened message to its destination point. It can also hold
the message on a storage unit, such as disk or magnetic
tape, for later delivery at a predetermined specified time or
upon demand. Frequently, message switching functions
are integrated into a more sophisticated system, which
may operate in other applications besides message
switching, and in fact, processors designed to provide onfr
message switching of voice-grade lines were deemed not to
meet the criteria for inclusion in this report.
A computer may be described as a distrihuted processin,;
node when it not only performs communications processing functions but also has the ability to process offline end-user applications (i.e., accounts receivable,
payroll, etc.). It is usually located at a site remote from the
host, and supports its own terminals, which can access
local or host applications.
Many general-purpose minicomputers have refined this
capability to an art form, combining intimate network
involvement with attention to locally-initiated processes.
Since the thrust of this report deals strictly with dedicated
communications processor products, we do not focus
great attention on general-purpose minicomputers that
may be configured with communications processing
applications. For a more expansive view of minicomputers
that may operate this type of environment, please see
report C 13-0 I 0-20 I entitled "Communications Capabilities of Minicomputers and Small Business Computers"
in Datapro Reports on Data Communications.
Many remote communications processors, because they
are capable of supporting a network of terminals, can act
as terminal controllers. By performing concentration and
pre-processing tasks for transmission into the network,
they act as a door through which the terminals they
support may access the network. Note again that the role
of terminal controller is generally one of several that may
be played by a communications processor; for information
on dedicated terminal controller products, we refer you to
Section C21 and C25 of Datapro Reports on Data
Communications.
Most mainframe computer and minicomputer vendors
have a definite approach by which their entire product line,
from small to large systems, may be interconnected for
communications. This network architecture is actually a
philosophy that the vendor feels optimizes resources
within a network. IBM's System Network Architecture
(SNA) and Digital Equipment's DECnet represent two
network architectures with approaches designed to meet
APRIL 1983
the needs of their customers and installed base. Depending
upon the types of products the computer vendor offers, the
network architecture may be very simple, and easy for
independent vendors to comply with, or highly structured,
and very difficult to comply with. As we enter the mid1980s, issues of standardization are hot, and the ability to
comply with a computer vendor's network discipline may
prove to be the great success or complete downfall of many
companies providing communications processor products.
Most processors have a physical limit to the number of
lines that they may support. However, the practical limits
of communications line capacity usually varies depending
upon line speed. Whether a line is operating at full- or halfduplex also has an e.tTeu on line capacity. For this reason,
properly depieting communications line capacity is the
most difficult and the most controversial entry in the
accompanying charts. It would be very easy to utilize a full
page to deseribe the line capacity capabilities of just one
processor. As a reasonable alternative, Datapro decided to
show the number of half-duplex lines that can be
physically attached to the processor presuming all lines
were operating within a given speed range. Three ranges
were chosen to represent low, medium, and high line
speeds. The ranges chosen were: up to 1800 bps, 2000 to
9600 bps, and over 9600 bps. The number of low-speed
lines usually represents the physical and throughput
limitation for asynchronous lines. Generally, the mediumand high-speed lines represent the outer limits of the
throughput capabilities. On some systems, using fullduplex lines halves the line capacity, since two channels are
required per line, and whether this effect occurs is also
indicated.
Communications Features/Fl-lnctions
One of the features of a communications processor is
support of a variety of terminals throughout the network.
The more terminal protocols supported, the more versatile
the processor may be in providing network compatibility.
Among t'he more common protocols supported are
ASCII, IBM's BSC and SDLC, ANSI's ADCCP, ISO's
HDLC, Burrough's BDLC, and Sperry Univac's UDLC.
See Table 2 for a complete list of terminal protocols
supported.
The X.25 packet-level protocol is now being supported by
many communications processor vendors in the U.S. The
support varies from a simple interface to a full "gateway"
function, which generally includes packet assembly and
disassembly, routing, and flow control for mUltiple
terminal devices. Although utilized in some private packetswitching network, the X.25 support is generally used to
gain access to public packet-switching networks, or ValueAdded Networks (V AN), such as Tymnet and Telenet.
Since the implementation of the X.25 protocol may vary,
each of the public carriers have established a certification
process by which a particular vendor's version of X.25 can
be guaranteed to be compatible with their network. In the
charts, you'll find a listing of those VANs on which the
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-118
Processors
Communications Processors
a new line, or disable an existing line, from the
communications processor console. The process takes
place while the system is in an active state; no sysgen is
required.
Another housekeeping function performed by some
communications processors is protocol and code
conversion. This feature allows normally incompatible
devices and systems to "speak" to one another without any
additional interfaces or user intervention. For example,
less expensive ASCII terminals may be used to connect to
an IBM 3270 application, with necessary conversions
performed by the communications processor.
Every processor has some means of detection and error
control. At the very least, there is typically a parity
checking mechanism. Two of the more sophisticated
algorithms frequently used are Longitudinal Redundancy
Check (LRC) and Cyclical Redundancy Check (CRC).
Braegen Corporation's B40 cOllllllunications processor
interfaces 10 IBM 5/370. 303X. 43XX Series and colllpatible
computers.
t:>
vendor's X.25 package is certified (e.g., IBM X.25 certified
by GTE Telenet).
Other protocol possibilities allow the vendor to specify
what other support they provide. A frequent response is
Passenger Airline Reservation System (PARS), which is
actually a combination application and protocol.
Many communications processors routinely perform
multiplexing/ demultiplexing operations. This process
allows several communications lines to be compressed into
one high-speed line. The data is then burst across the line
and upon reaching its destination returned to its original
state. This method is less sophisticated than concentrating,
but an equally effective way to reduce line charges.
Although intelligence resides at both ends, it is basically a
hardware function and does not require software
compatibility with the host.
An important function of many communications
processors is the ability to allow a terminal to access
mUltiple applications residing within one host, or to access
more than one host. Some network processors that do not
distinguish between terminals and host ports can make
connections between any two termination points in the
network. Terminal-initiated applications switching
permits the terminal user to specify which application
he / she .wishes to access, with all addressing and routing
performed transparently by the communications processor. Typically, a communications processor with
this capability also provides some mechanism-passwords, configurational "class" codes, etc.-by which
access authorization and restriction are controlled.
Communications processor-initiated dynamic line
reconfiguration allows the user to define and activate
Some communications processors have the very valuable
built-in feature of automatic transmission speed detection.
This function senses the speed of an incoming transmission
and then automatically adjusts the channel interface to
receive the call. Without automatic speed detection, each
line must be configured for use at a specified speed;
consequently, a user must dedicate one or more
communications lines for every speed in use. With it, the
same user may be able to make more efficient use of fewer
lines, and residually, to reduce the number of busy signals
on the network.
Some communications processors will automatically
disconnect an inactive dial-up terminal if that terminal has
been silent for a pre-programmed length of time. The
automatic disconnection of a dormant terminal has saved
many a user unnecessary line charges and non-productive
occupation of a host port in situations where terminal
operators leave their posts to take a coffee or lunch break
without signing off.
System Characteristics
It should be kept in mind that a communications processor
is in essence a mini- or microcomputer, specially
programmed for communications-specific functions. As
such, it shares many attributes with the more common
general-purpose type of system.
Processor type specifies the manufacturer and model of
the central processor used in the communications system.
A vendor may build a processor or get it from another
vendor. Motorola, Intel, and Zilog seem to be supplying
the majority of processors currently being used. The
processor supplies most of the intelligence and is central to
the manipUlation of data.
/
1,,_
Main memory word size (length) is the number of bits that.
can be stored or retrieved from memory using a single
machine cycle. We are currently in the midst of a rapidlyoccurring technological revolution that involves 1:>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C1 3-010-1 1 9
Processors
Communications Processors
'> development and mass production of microprocessors
that support increasingly larger word lengths. As 32-bit
microprocessors, such as the Motorola 68000, become
readily available, older 8-bit and 16-bit chips are expected
to be phased out. During this transition, you will find word
lengths of eight, 16, and 32 bits represented in the chart
entries.
In terms of operations, since a byte is eight bits, these
microprocessors neatly accommodate 1-, 2-, and 4-byte
processing. For example, a chip that has a 32-bit word
length has the ability to process four bytes simultaneously.
The longer word lengths permit greater precision.
increased instructions, better performance, and more
memory locations to be addressed.
Although 16- and 32-bit systems have the ability to process
mUltiple bytes using a single machine cycle internally, all
do not enjoy the same level of sophistication when passing
data to external devices. Some vendors have retrofitted the
data bus of their systems, which is the pathway by which
data is transmitted between the processor and external
devices, to accommodate the longer word length used by
the processor, thus also maximizing the data transfer
process. Others have not.
Main memory storage capacity is dependent on the
number of memory locations that can be addressed by the
processor. The entry shows the maximum amount of main
storage available for each processor, expressed in
thousands (K) or millions (M) of bytes.
Front-end processors transfer data across the channel to
the host computer at very high-speeds. The level of data
transferred across an I/O channel is indicative of the
sophistication of the system. Less sophisticated
communications processors, such as 270X emulators,
transfer data one-byte at a time. In order to pass the data
more efficiently, higher level front-end processors package
transmissions in multiple-byte blocks. Each block consists
of a fixed number of bytes. Even more sophisticated
systems can handle variable-length data transfers and can
transmit an entire file at a time to the host; only a few
vendors are capable of performing this function.
The type of data supported between memory and
communications lines. mass storage. or other peripherals
refers to the manner in which data is transferred to and
from memory. Critical to this process is how much of a
disturbance (interruption) the transfer causes in the central
processor. Many ofthe microprocessors used today permit
Direct Memory Access (OM A). DMA allows the external
device to access the memory to perform read, write, and
other memory functions without disturbing the microprocessor's registers or interrupting the microprocessor's processing cycle. Without DMA, an external
communications line, peripheral, or other device must
interru pt the microprocessor in order to access the
memory. The interrupt must be recognized and the
device's request processed, thus utilizing valuable machine
time and cycles, and contributing to the performance
APRIL 1983
deterioration of the microprocessor. To use an extreme
example, this could turn out to be the bottleneck for an
entire communications network.
Some communications processors support a variety of
external peripheral devices. I/O refers to system-related
input! output devices, such as a console CRT, printer, tape
drive, or disk drive that may be utilized by the processor
for system-level activities. Such activities might include
system configuration and control, statistics gathering and
reporting, and network monitoring. Peripheral devices
such as disk drives may also be used as temporary hack-up
storage during an emergency or maintenance outage. The
data stored can then be transferred back to the processor
once the difficulty has been corrected. Many processors
also allow diagnostic peripherals like line testers and
various network control devices to connect directly to a
systems interface established specifically for this purpose.
Sometimes these devices may be mounted within the
processor and thus be an integral part of the unit. More
frequently, they are externally connected to the system via
a designated "diagnostics port."
Most communications processors have a local console
which is used to perform systems control functions.
However, a growing number of processor vendors now
offer support for a remote console. This feature permits a
terminal at a remote site to access the systems operations
of the communications processor via dial-up or leased-line
facilities, diagnose a problem or make an adjustment, and
then restart the system (sysgen) if necessary. Because the
remote console has access to all systems functions and
operations, several layers of security precautions are
usually enforced to safeguard against unauthorized
entrance. These may be a combination of hardware and
'software including a secure port, special firmware, and! or
passwords.
Vendors find the remote console function to their liking
because they can duplicate a problem, correct it, and
advise the customer without leaving their own facility, thus
saving on costly overhead associated with field engineering
personnel. It's good for the customer because it helps get
the processor problem corrected a lot quicker than waiting
for a service call.
Communications processors, like other computers, have
operating systems implemented in firmware, software, or a
combination. Firmware is program logic written and
stored on a read-only integrated circuit residing inside the
processor, and is generally not alterable by the user.
Software, of course, is program logic loaded into the
processor's main memory from an external source, such as
a diskette or a host computer, and is easily modified by a
programmer or updated by the vendor. Most operating
systems implemented today utilize a combination of
software and firmware.
Initial Program Load (IPL) method employed may be
internal self-loading initiated by the user simply flipping a
switch or pushing a button to start-up the system,
(figuratively, the system pulls itself up by its own I>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-120
Processors
Communications Processors
1> bootstraps, aka "booting"). On some machines, all
programs are stored in firmware, and the start-up process
is completed by the bootstrap method. In other systems,
booting only begins the process of bringing up the
machine; the remaining program logic must be manually
loaded from a diskette or other media, or downloaded
from a host.
For functions not supported by the basic operating system,
the communications processor vendor may offer
additional software support in the form of preprogrammed packages, and/ or support user programmability. Vendor-supplied software may include various
utility programs for routine types of tasks, and
programming language compilers or interpreters. Some
. operating software is parameter-based and permits the
user to customize the system's functions and line
configuration by selecting applicable parameters from
various menus embedded in the operating system.
Although this is not true programming, this method,
depending on the extent of the menus, can offer great
latitude in the formation of communications processing
applications.
Some vendors offer software separate~1' priced, while
otrers "bundle" it into the total cost. Some vendors may
only charge for optional software, such as utilities.
The date qfjlrst delivery is not the announcement date of
the product, but the date when the first system of this
model was installed on a customer site. The number of
systems installed to date may help you to discern the
magnitude of the market, but does not always reveal the
relative merits of a communications processor. Some
recently announced products may have great attributes,
but a modest installed base. Large installed bases may
simply reflect effective marketing or an outdated, but once
useful product. Please also refer to our user survey located
earlier in this report for more telling data.
As we mentioned previously, a processor may be sen'iced
by the vendor, a third party, or other means. Be advised
that a vendor listed as performing service may, in reality,
only provide factory service. In these cases, the user must
mail in a faulty board or part to the vendor's factory for
service or replacement. Other vendors may provide full onsite field service and/ or a remote diagnostics capability.
When compiling a study of this sort, we sometimes come
across a product whose basic characteristics are not
completely covered by the designated categories we've
delineated. The comments help to amplify preceding
entries or to explain key elements of a product that may be
overlooked in the formal chart entries.
Communications Processor Vendors
To judge the amount of user-created programs actually
being written, we asked the vendors to approximate the
proportion qltheir currently installed systems supplied as
turnkey systems. A turnkey system is a system that
becomes immediately operational without additional
intervention on the part of the user. Since this type of
system is up and running as soon as the "key is turned," it
does not require the user to maintain costly on-site
personnel in order to maintain hardware or software
operations.
Pricing and Availability
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone
numbers of the vendors whose communications products
are shown 'in the comparison charts that follow.
Action/Honeywell, 440 I Beltwood Parkway South. Dallas. Texas
75234. Telephone (214) 386-3500.
.
Amdahl Communications Systems Division (formerly Tran
Telecommunications), 2500 Walnut Avenue. Marina del Rcy.
California 90291. Telephone (213) 822-3202.
Amdahl Corporation, 1250 Fast Argues Avenuc. Sunnyvalc.
California 94086. Telephone (408) 746-6000.
We've shown the purchase price, monthly maintenance,
and monthly lease/rental for a minimum COl?flguration,
including all hardware components required for basic
operat ion. This basic system shou I d be sufficiently
functional to perform in applications considered entrylevel for this system. The maximum practical confIguration represents the largest fully configured system that the
vendor considers practical to deliver. Because lease and
maintenance contracts are not always available from
vendors, prices for these items may not appear in a specific
chart. In such cases, you might check with the vendor as to
whether leases and maintenance are provided by a t~ird
party.
We asked if maintenance is bundled with the lease / rental.
If it is, no additional charge for normal service is applied.
However, bundling of service does preclude the option on
the part of the user of seeking out a third party
maintenance organization or performing "do it yourself"
maintenance, unless that user wishes to pay twice for the
same service.
Amnet, Inc. (formerly ASI Teleprocessing, Inc.), 101 Morse Street.
P.O. Box 412. Watertown. Massachusetts 02172. Telephone (617)
923-1850 ..
Auscom, Inc., 2007 Kramer Lane, Austin. Texas 78758. Telephone
(512) 836-8080.
BBN Computer, 33 Moulton Street. Cambridge. Massachusetts'
02238. Telephone (617) 497-2800.
Braegen Corporation, 20740 Valley Green Drive. Cupertino.
California 95014. Telephone (408) 255-4200.
Burroughs Corporation, Burroughs Place. Detroit. M ichiga n 4!Q32.
Telephone (313) 972-7000.
Cableshare, Inc., 20 Enterprise Drive. P.O. Box 5880. London.
Ontario, Canada N6A 41.6. Telephone (519) 686-2900.
Centennial Computer Products, Inc., 6100 Execut ive Bou leva rd.
Rockville. Mary,Iand 20852. Telephone (30 I) 984-9120.
Century Analysis, Inc., 114 Center Avenue. Pacheco, California
94553. Telephone (415) 680-7800.
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
/
C13-010-121
Processors
Communications Processors
. Chi Corporation, 21111 Chagrin Boulevard. Cleveland. Ohio 44122.
Telephone (216) 991-9000.
Codex Corporation, 20 Cabot Boulevard. Mansfield. Massachusetts
02048. Telephone (617) 364-2000.
Commex, Ltd., 141 Central Park Avenue South. Hartsdale. New
York 10530. Telephone (914) 328-0600.
Computer Communications, Inc., 2610 Columbia Street. Torrance.
California 90503. Telephone (213) 320-9101. extension 321.
Modular Computer Systems, Inc. (Modcomp), P.O. Box 6099. 1650
West McNab Road. Ft. Lauderdale. Florida 33310. Telephone (305)
974-1380.
NCR Corporation: sec NCR Comten, Inc.
NCR Comten, Inc., 2700 Snelling Avenuc North. St. Paul.
Minnesota 55113. Telephone (612) 638-7777.
Comten, Inc.: see NCR Comten, Inc.
North American Philips Corporation, Communications Systems
Division, 55 Knightsbridge Road. Piscataway. New Jersey 08854.
Telephone (201) 457-0400.
Control Data Corporation, 8100 34th Avenue South. Minneapolis.
Minnesota 55440. Telephone (612) 853-SIOO.
Paradyne Corporation, 8550 Ulmerton Road. Largo. Florida 33540.
Telephone (SI3) 530-2000.
Datastream Communications, Inc., 1115 Space Park Drive. Santa
Clara. California 95050. Telephone (408) 727-2980.
Periphonics Corporation, 4000 Veterans Memorial Highway.
Bohemia. New York 11716. Telephone (516) 467-0500.
Digital Communications Associates, Inc., 303 Research Drivel
Atlanta. Norcross. Georgia 30092. Telephone (404) 448-1400.
Raytheon Data Systems Company, 1415 Boston-Providence
Turnpike. Norwood. Massachusetts 02062. Telephone (617)
762-6700.
Digital Communications Corp.: see MAlCOM DCC Inc.
GTE Telenet Communications Corporation, 8229 Boone Boulevard.
Vienna. Virginia 22IS0. Telephone (703) 442-1000.
Sperry Corporation, P.O. Box 500. Blue Bell. Pennsylvania 19424.
Telephone (215) 542-4011.
Honeywell Information Systems, Inc., 200 Smith Street. Waltham.
Massachusetts 02154. Telephone (617) 895-6000.
Starnet Data Systems, Protex Industries, Inc., 1331 West Evans
Avenue. Denver. Colorado 80223. Telephone (303) 935-3566.
IBM Corporation, Information Systems Group, National Accounts
Division, 1133 Westchester Avenue. White Plains. New York 10604.
Telephone (914) 696-1900.
Systems Research, Inc.: see Burroughs Corp.
ICCI, 196 Broadway. Cambridge. Massachusetts 02139. Telephone
(617) 864-3270.
leot Corporation, 830 Maude Avenue, Mountain View, California
94039. Telephone (415) 964-4635.
Tandem Computers, Inc., 19333 Valleo Parkway. Cupertino.
California 95014. Telephone (408) 725-6000.
Telefile Computer Products, Inc., 17131 Daimler Street. Irvine.
California 92714. Telephone (714) 557-6660.
Thomas Engineering Company, 1040 Oak Grove Road. Concord.
California 94518. Telephone (415) 680-8640.
Lemcom Systems, Inc., 2104 West Peoria Avenue. Phoenix. Arizona
85029; Telephone (602) 944-1543.
Tran Telecommunications Corporation: see Amdahl Communications Systems Division.
MI A-COM DCC, Inc., 11717 Exploration Lane. Germantown.
TRT Data Products, Norfield Communications Division, 3 Depot
Place. East Norwalk. Connecticut 06855. Telephone (203) 853-2777.
Maryland 20767. Telephone (301) 428-2708.
Memorex Communications Group, 18922 Forge Drive. Cupertino.
California 95014. Telephone (408) 996-9000.
APRIL 1983
Westinghouse Canada, Incorporated, Electronic Systems Division,
777 Walker's Line. P.O. Box 5009. Burlington. Ontario. Canada
L7R 4B3. Telephone (416) 528-8811.0
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-122
Processors
Communications Processors
Action/Honeywell
Mercury Message
Management System
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 br~
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexin9/demultiplexing
Terminal-initiated applications bwitching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Amdahl
4705
Most major vendors
Amdahl 470, 580 and
compatibles
No
Yes
4
4
270X/370X, EP, NCP, ACF
Yes
1
No
No
No
No
SNA
-
No
-
Yes
Yes
No
Yes
No
Amdahl
Communications
Systems Division
3400 Series
Most major vendors
No
-
-
Yes
Network-depndent
Yes
No
Yes
Yes
No
Amdahl
Communications
Systems Division
4410 Processor
Network-dependent
Yes
No
Yes
Yes
No
,
352
352
Application-dependent
56K
Capacity halved
100
100
Network-dependent
19.2K
None
104
104
52
64K
None; see Comments
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No.
Async/X.25, MSC/X.25
ASCII/EBCDIC via soft.
LRC and CRC
50-9600 bps via soft.
Yes
Yes
Yes
No
No
No
CRC
50 to 9600 bps
Yes
Yes
Yes
Yes
No
No
CRC
No
No
Data General Nova 3
16
512K
Byte
Proprietary
18
512K
Byte or block
CA 2/40
16
208K
Byte
Proprietary
16
768K
Block
Interrupt
DMA
DMA
Disk, mag tape
-
DMA and interrupt
DMA and interrupt
DMA and interrupt
DMA and interrupt
Diskette and self
diagnostics
Yes
-
Combination of software and firmware
From disk. & DP node
Combination of software and firmware
Load from diskette
128
128
19.2K
. None
Yes
Diskette as diagnostic
peripheral
No
DMA and interrupt
-
Yes
Software
Download from host
Comm-pro
-
-
User programmability
Yes, via user-selected
parameters
Yes
Yes
Yes
Yes
Yes
Yes, via user-selected
parameters
Yes
All
All
All
All
200,000
1,000
Third party
50,225
448
1,444 (2-yr. lease)
200,000
2,000
127,000
1,600
Federal govt. only
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
600,000
3,000
Third party
327,970
2,682
14,196 (2-yr. lease)
5,000,000
50,000
-
300,000
3,000
Federal govt. only
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1971
95
Honeywell
No
November 1979
300
Amdahl
-
-
Mercury replaces Telecontroller as Action's
store-and-forward message switch system
with front-end capability
Operates with IBM
3705 and 3705/Commpro software, with up
to 1.8 times the 3705
throughput capacity
COMMENTS
---
No
Internal self-load
None
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
\
-Yes
Software
Approx. proportion of currently installed
systems supplied as turnkey systems
)-
All X.25 equipped
vendors
IPL method
Additional software supported
Software separately priced
/
!
-
June 1982
Over 75
Amdahl
Handles mix of async.
and sync. traffic;
used in multi-vendor
environment; proprietary packet switching;
supports satellite
transmissions
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
1979
Over 50
Amdahl
Full duplex transmission only has
Modulo 128 satellite
support; 4410 performs
self-diagnostics;
supports CCITT X.25
~
I'---
APRIL 1983
C13-010-123
Processors
Communications Processors
f
BetaCom Corp.
PCM (Professional
Communications
Manager)
I.
Amnet
Nucleus 6000
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Auscom
8911
BBN Computer
C/30-50
Most major vendors
IBM 370. 30XX. 43XX.
and compatibles
Most vendors
IBM personal computers. Televideo
802
No
Yes
16
16
No
Yes
16
Yes
Yes
Yes
Yes
051. U.S. DOD 1822.
TCP.IP
Yes. for micros
1
1
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Yes
1024
Yes
No
No
No
051
Yes
2
2
Any IBM controller
Yes
2
Yes
Yes
Yes
Yes
Ethernet. DEC net. Cus.
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity. if all lines are full-duplex
1024
1024
512
64K
None
16
16
16
1M
None
64
64
64
64K
None
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Programmable
Programmable
No
Yes
Yes
Yes
Yes
No
No
Yes
110 to 19.2K bps
Yes
Multi-microprocessor
16
1M
Byte and block
DEC LSI-ll
16
256K
Byte
BBN C/30. C/50
16 and 20
64K to 500K
Byte
DMA
DMA
DMA
Console. printer. disk
Both
DMA
Both
Terminal, cassette
Yes
DMA and interrupt
DMA and interrupt
DMA and interrupt
CRT console. disk,
disk., mag tape, prt.
Yes
Combination of software and firmware
Download from NMC
Program development
utilities
Software or firmware
Firmware and software
Firmware
Load disk./tape/host
Anything available for
DEC LSI-11
Download or cassette
Remote monitoring and
control utilities,
traffic generator
utilities
Yes, via user-selected
parameters
No
Built-in firmware
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
TerminaHnitiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size. bits
Main memory storage capacity. bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O. back-up. and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Yes, on restricted
basis
Software options
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING'AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
APRIL 1983
Yes, via user-created
programs
All, except diagnostics
Yes
-
No
No
No
Yes
Yes
BSC
2
-
1200
None
No
Yes
No
Yes
Yes
Yes
-
Yes
Intel 8088
8
128K
Byte. file
Interrupt
-
Interrupt
Console
No
-
Yes, via menu
configurator
-
-
90%
95%
All
45,000
16,795
By component
Not offered
-
25,000
Not offered
Contact vendor
Contact vendor
Contact vendor
200,000
Approx. 25,000
By component
Not offered
-Not offered
Contact vendor
Contact vendor
Contact vendor
No
January 1983
-
-
-
Amnet/third party
No
July 1980
200
Auscom
Supports 4 to 1024
ports, many protocols,
packet-switching,
dynamic routing;
part of an integrated
private data network
product line
Designed as a programmabie IBM channel
interface or FEP by
emulating standard
IBM control unit;
more hosts supported
with extended chassis
-
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
-
-
November 1979
-
BBN
-
Complete packet-switch
system; monitored and
controlled by C/70
Network Operating
Center
Printer-spooler
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-124
Processors
Communications Processors
Burroughs
CP3680/
CP3680-01
Braegen
B40
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
IBM S/370, 303X, 43XX Burroughs B2000,
Series and compatibles
B3000, and B4000
Series
Yes
Cableshare CSI
Data Concentrator
All Burroughs; IBM
S/370, 30XX, 43XX,
and compatibles
All computers using
ASCII serial communication ports
No
Yes
16
16
3270/1403/2501
Yes
4
No
No
No
Yes
SNA
Yes
4
4
No
Yes
4
No
Yes
Yes
Yes
BNA
Yes
12
Yes
Yes
Yes
Yes
BNA,SNA
Yes
16
Yes
No
No
Yes
X.25
6
6
6
56K
None
288 async., 72 sync.
40
40
19.2K
Capacity halved
47
12
19.2K
None
16
16
16
56K
None
No
Yes
No
No
No
CRC
No
No
-
Yes
Yes
No
Async to X.25
-
ASCII to EBCDIC
-
Braegen
16
256K
Byte
-
DMA
-
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Burroughs
CP9558-1/
CP9572
Yes
Yes
-
-
-
-
-
X.25 procedures
Yes
Yes
-
B920
16; multiprocessors
1.2M
Byte
Intel 8088
16
192K
Block
DMA and interrupt
DMA
DMA
DMA
-
DMA
-
DMA
FEP diskette
-
-
Yes
-
-
Yes
Combination of software and firmware
Manual from diskette
None
Combination software
and firmware
Download from host
NDL, DCS
Combination of software and firmware
-
Software and firmware
IPL method
Additional software supported
User programmability
No
-
No
Yes, via user-selected
parameters
All
-
None
All
75%
-
All
14,000
64,050 (3680)
535
2,4 15 (3-yr. lease)
22,559 (9572)
75
729 (3-yr. lease)
3,000
None
Not available
124,950 (3680+ -01)
1,010
2,310 (3-yr. lease)
29,401 (9558-1)
200
1,033 (3-yr. lease)
5,600
None
Not available
-
Yes
October 1980
1,000
Burroughs
No
June 1, 1983
No
Cables hare
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
300
200,000
-
3,000
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
-
No
1981
Over 300
Braegen
Concurrent support of
local 3270, remote
3270, remote job
entry, local job
entry, screen editor,
multiple hosts
January 1978
200
Burroughs
Mag. tape, floppy
and hard disk
I,
Console
Internal self-load
-
Yes, via user-selected
parameters
Redundant system
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C13-010-125
Processors
Communications Processors
Cableshare
LSI-X.25
Front-End Processor
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max, no, of hosts channel-attachable to front-end
Max, no, of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no, of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Cables hare
LSI-X.25 Host Port
Concentrator
Cableshare
LSI-X.25 Intelligent
Concentrator
Centennial Computer
2000/3000
DEC PDP-ll and V AX
All hosts supporting
async, qommunications
All async, terminals
Univac 1100 Series
Yes
1
1
No
No
1
Yes
No
No
No
x'25, OSI
Yes
32 async, channels
32
No
Yes
32
Yes
No
No
Yes
X,25, OSI
Yes
32 async, channels
32
No
Yes
32
Yes
No
No
Yes
X,25, OSI
Yes
16
15
127
127
127
19,2K
Halved
32
32
32
19,2K
Halved
32
32
32
19,2K
Halved
150
150
75
19,2K
None
Yes
No
No
Async,/X,25
1
Yes
No
No
Async,/X,25
Baudot/ ASCII
Yes
No
No
Async,/X,25
Baudot/ ASCII
No
No
Yes, 110-9600 bps
Yes
Yes
Yes
Yes
No
ASCII/EBCDIC
Yes; LRC and CRC
Yes; 50-19,2K Ips
Yes
No
-
No
Yes
No
Yes
SNA, CSP
Communications line capacity:
No, of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1BOO bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm, processor-initiated dynamic line reconfig,
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
-
-
-
Yes, 110-9600 bps
Yes
LSI-ll/2 or PDP-l1 /23
16
64K
Block
-
-
Proprietary
16
32K (2000) 64K (3000)
Byte
DMA
-
--
-
-
-
-
FEP console
LSI-ll/2 or PDP-ll /23
16
64K
Console
LSI-l1/2 or PDP-l1 /23
16
64K
Console
Yes
Yes
Yes
DMA
Built-in self diagnostics
Yes
Software
Software
Software
IPL method
Additional software supported
Download from host
None
Internal self-load
None
Internal self-load
None
Combination of software and firmware
From diskette or host
Custom
User programmability
No
No
No
No
Software separately priced
-
-
-
-
All
All
All
100%
13,450
100
None
4,335
70
None
4,335
70
None
150,000
1,500
4,000
16,450
125
lB,500
100
18,500
100
500,000
3,000
13,500
No
1974 (2000) 1976 (3000)
50
Centennial Computer
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICIN~ AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1983
-
-
-
-
-
November 1978
75
Digital Equipment Corp.
March 1980
25
Digital Equipment Corp,
March 1980
125
Digital Equipment Corp.
DTE or DCE support;
supports up to 5 X,25
network links with DTE
or DCE configuration
DTE or DCE support;
supports up to 5 X,25
network links with DTE
or DCE configuration,
DTE or DCE support;
supports up to 5 X,25
network links with DTE
or DCE configuration.
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-126
Processors
Communications Processors
Century Analysis
OSI
(Office Systems
Interface)
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other perlpherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Commex, Ltd
DNP 4/6/16
Univac 1100 Series
IBM S/370, 30XX,
43XX, and compatibles
IBM S/360, S/370,
30XX, 43XX, and compatibles
Yes
None
Multiple
No
Yes
Multiple
Yes
Yes
Yes
Yes
Yes
Yes
8
8
No
Yes
Unlimited
Yes
No
No
Yes
No
Yes
4
2
270X, 370X
No
-
Yes
64
64
270X, 370X EP
Yes
64
Optional
Optional
Optional
No
Future
24
24
24
19.2K
None
Over 1000
32
6
50K
None
240
Config.-dependent
Config.-dependent
230.4K
None
See Comments
See Comments
See Comments
56K
Half aggregate data
rate
Yes
Yes
Yes
Planned
Planned
Yes
No
No
Yes
Yes
Yes
Yes; all protocols
ASCII/EBCDIC
LRC, 8CC, and CRC
Yes, 110-19.2K bps
Yes
No
Yes
Yes
ASCII/2741
ASCII/EBCDIC
LRC and CRC
Yes; 135 to 9600 bps
No
Yes
Yes
Yes
Optional
Optional
LRC and CRC
Yes; 110-19.2K bps
Yes
CAI-108/116/124
16
1M
Block
Perkin-Elmer 3200
32
2M
Byte
CCI 801
16
64K
Byte
Mot. 6809 & Sig. 8X300
8
15M
Byte and block
Interrupt
Interrupt
Interrupt
FEP Console
DMA and interrupt
DMA and interrupt
Diagnostic
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP console
Yes
Yes
Yes
DMA and Interrupt
DMA and interrupt
DMA and interrupt
FEP consoles and
bubble memory
Yes
Combination of software and firmware
Download from host
Combination software
and firmware
Host/self-Ioad/disk.
Simulator and other
utilities
Software
Software
From host or diskette
Load from bubble memo
Network generator,
trace, on-line and
off-line diagnostics
No
No
No
No
No
-
Via user-selected
parameters
No
Yes, via user-selected
parameters
X.25 only
-
Yes, via user-selected
parameters
None
All
All
All
All
6,500
Software 25; h/w 150
60,000
700
Contact vendor
-
-
-
10,950
Software 25; h/w 150
-
500,000
-
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
-
Is maintenance bundled with lease/rental?
Date of first delivery
Number o( systems installed to date
Serviced by
No
December 1981
150
CAl
COMMENTS
Codex
6520
DEC PDP Series, NCR
Century & Criterion
-
User programmability
Chi
Communications
Processor
CAl implementation
uses Motorola 68000,
. flow control, loadleveling, raw line
class selection, error
correction, terminal
key-ahead buffering
-
No
1977
35
Chi Corporation
-
January 1980
25
Codex
Dynamic routing; two
async. screen editors;
automatic terminal
protocol detection;
redundancy; multiple
local and remote hosts
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Contact vendor
-
Yes
June 1981
Approximately 50
Commex, third party
Mod .. pack. bus arch.;
DNP 4 handles up to 13
lines plus cons.; DNP
6, up to 23 lines plus
cons.; DNP 16, up to
83 lines pius cons.
per cabinet (1300
lines max. per system)
APRIL 1983
~ ..
C13-010-127
Processors
Communications Processors
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Computer
Communications
CC-6
Commex, Ltd
CMC-4 and CMC-32
SUPPLIER AND MODEL
Computer
Communications
CC-8
Computer
Communications
CC-80/85
IBM S/370, 30XX, 43XX IBM S/370, 30XX, 43XX, IBM S/370, 30XX,43XX, IBM S/370, 30XX, 43XX,
and compatibles
and compatibles
and compatibles
and compatibles
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Yes
1
1
270X, 370X EP
No
Yes
2
2
270X/370X EP
No
Yes
4
4
270X/370X EP
No
Yes
7
7
270X/370X EP
No
-
-
No
No
No
Yes
No
Yes
Yes
No
Yes
No
32
32
4
56K
None
240
120
32
230.4K
None
1232
120
120
230.4K
None
No
No
No
Optional
Optional
LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
No
No
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Parity, LRC and CRC
Yes; 110 to 1200 bps
Yes
Motorola 6800
CCI 601
16
64K
Byte
CCI 801
16
64K
Byte
CC18001/8501
16
256K
Byte
-FEP cOI,sole, others
DMA and interrupt
DMA and interrupt
DMA and interrupt
Control panel
optional
Yes
Yes
DMA and interrupt
DMA ·and interrupt
DMA and interrupt
FEP CRT console,
diskette, printer
Yes
DMA and interrupt
DMA and interrupt
DMA and interrupt
Disk (40-200 MB), mag
tape, FEP CRT, printer
Yes
-
-
No
No
No
No
-
No
No
No
Yes
No
32
32
24
56K
None
8
320K
Byte
Interrupt
Firmware
Software
Software
Software
IPL method
Additional software supported
Internal self-load
Full system
diagnostics
Download from host
Assembler, utilities,
diagnostics
From host/diskette
Value-added options
assembler loader,
utilities, diagnostics
User programmability
Custom
Software separately priced
None
Yes, via user parameters and programs
None
Yes, via user parameters and programs
Value-added options
From host/disk
Value-added options,
custom software,
assembler, loader,
utilities
Yes, via user parameters and programs
Options and custom sys.
All
All
90%
95%
34,770
120
890 (3 yr. lease)
24,990
150
802 (3 yr.); 1048
(rental)
39,840
296
1224 (3 yr.); 1600
(rental)
68,000/115,640
246/426
1,932 (3 yr. lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
65,645
275
1,950 (3 yr. lease)
Yes
November 1977
Approximately 100
Commex, third party
181,200
1,593
5858 (3 yr.); 7635
(rental)
Yes
1976
200
Computer Comm.
674,050
3,344
17,523 (3 yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
51,368
405
1742 (3 yr.); 2263
(rental)
Yes
November 1981
9
Computer Comm.
Auto-poll, auto-baud
rate detect, autodial, multi host support, user programmability, field
upgradability, reverse
channel
Auto-poll, auto-baud
rate detect, speed &
code conversion, auto
dump, auto load, multi
host support, terminal
initiated line sel.,
etc.
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
APRIL 1983
Commex sells communications processors
manufactured by Lemcom and labeled with
the Commex name
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Yes
1975
386
Computer Comm.
Used mainly for custom
store-and-forward
message switches,
electronic mail, &
high speed transaction
processing systems
(e.g., airline
reservations)
C13-010-128
Processors
Communications Processors
Control Data
2551-3
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
Datastream
Communications
774
Control Data
2551-4
CDC Cyber 170, Cyber
70, Cyber 6000 Series
CDC Cyber 170, Cyber
70, Cyber 6000 Series
Yes
2
1
No
Yes
8
No
No
No
No
Yes
Yes
2
1
No
Yes
8
No
No
No
No
Yes
32
32
4 @ 19.2K; 2 @ 56K
56K
None
Datastream
Communications
776
IBM & IBM PCM
IBM & IBM PCM
No
No
3271/3274 BSC
Yes
2
No
No
No
Yes
BSC
3276 BSC
Yes
1
No
No
No
Yes
BSC
254
254
4 @ 19.2K; 2 @ 56K
56K
None
-
-
-
9.6K
None
-
9.6K
None
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes; 100 to 1200 bps
Yes
Yes
Yes
Yes
Async. to 3270 BSC
EBCDIC to ASCII
Parity, LRC, CRC
To 9600
Yes
Yes
Yes
Yes
Async. to 3270 BSC
E8CDIC to ASCII
Parity, LRC, CRC
To 9600
Yes
CDC 2551-3
16
256K
Byte and control
CDC 2551-4
16
256K
Byte and control
Monolithic Z80
8
64K
Block
Monolithic Z80
8
64K
Block
DMA and interrupt
-
DMA and interrupt
-
2
Interrupt
-
1
Interrupt
DMA and interrupt
Console, cassette
-
-
Yes
Yes
Yes
Yes
Combination of software and firmware
Download from host
Combination of software and firmware
Download from host
Software
Software
DMA and interrupt
Console, cassette
-
-
Mag tape
Mag tape
-
-
Micro cassette
Diagnostics
Micro cassette
Diagnostics
User programmability
Yes
Yes
Yes, user parameters
Yes, user parameters
Software separately priced
All
All
None
None
98%
98%
All
All
36,955
433
1,067 (3 yr. lease)
48,648
483
1,403 (3 yr. lease)
-
-
68,570
751
2,048 (3 yr. lease)
157,478
1,540
5,093 (3 yr. lease)
-
-
None
None
No
January 1983
No
January 1983
No
November 1980
650
Datastream Communications
Tape-based system supporting up to 2 BSC
lines in 8, 12 or 16
port versions; remaining ports for
async. terminals or
modems; upgradable to
redundant and SNA
No
Apri11982
300
Datastream Communications
Tape-based system in
5 and 9 port versions,
of which 1 port is
BSC with remaining
ports for async.
terminals or modems
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
Control Data Corp.
-
Control Data Corp.
None
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
None
APRIL 1983
C13-010-129
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max, no, of hosts channel-attachable to front-end
Max, no, of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no, of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No, of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm, processor-initiated dynamic line reconfig,
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IBM & IBM PCM
Most vendors
No
DECsystem-l0
B
8
No
Yes
Unrestricted
Yes
No
No
Yes
INA
-
3274C SNA
2
2
No
No
No
Yes
SNA
-
-
-
Yes
4
Yes
No
No
No
X,25
Yes
27
Yes
No
No
No
X,25
27
None
9600 (19,2K netline)
None
9600 (19,2K netline)
None
Yes
Yes
Yes
Async, to 3270 SNA
EBCDIC to ASCII
Parity, LRC, CRC
To 9600
Yes
Yes
Yes
Yes
Async,/X,25
No
Yes-ARQ
110 to 2400 bps
Yes
Yes
Yes
Yes
No
No
Parity, LRC, CRC
50 to 1200 bps
Yes
Yes
Yes
Yes
No
ASCII to EBCDIC
Parity, LRC, CRC
50 to 1200 bps
Yes
Intel 8086
16
500K
Block
DCA System 355-Z80A
8
lA72K (64K per Z80A)
Byte
Zilog Z80A
8
64K
Byte, block
Zilog Z80A
8
64K
Byte, block
DMA
DMA and interrupt
Interrupt
Interrupt
Dual cass, tape unit;
all diagnos, built-in
Yes
-
-
Mag tape
Yes
Yes, user parameters
None
APRIL 1983
-
4
21 to 27
4 to 19
User programmability
COMMENTS
Local concentrator
-
-
Software separately priced
Combination of software and firmware
Internal self-load
Configuration tape
generator
DMA and interrupt
DMA and interrupt
-
-
Software and firmware
Software and firmware
Interrupt
Local terminal, GTE
Telenet NCC
Yes
Download, EPROM load
Interrupt
Local cons" GTE T elenet NCC, cass, tape
Yes
Download or cass, load
-
-
Yes; via user-selected
parameters/programs
Utilities only
Yes, via user-selected
parameters
Maintenance only
Yes, via user-sel. par,
or user-created prog,
All
All
5%
-
90%
-
12,000 and up
Contact vendor
Contact vendor
2,350
30
-
7,500
65
800 (public network
only)
-
144,145
Contact vendor
Contact vendor
2,350
30
12,690
110
1,100
No
October 1982
100
Datastream Communications
Tape-based system supporting up to 2 SNA
lines in 8, 12 or 16
port versions; remain,
ports for async, term,
or modems; full 3274
(PU2, LU2) SNA support
Contact vendor
October 1980
Over 200
DCA, third party
None
None
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Local concentrator
Most vendors
4
4
Micro cassette
Diagnostics
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Most vendors
GTE Telenet
TP3010
-
Software
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
GTE Telenet
TP3005
124
124
44
19,2K
None
2
-19,2K
IPL method
Additional software supported
Approx, proportion of currently installed
systems supplied as turnkey systems
Digital,
Communications
Associates
System 355
Datastream
Communications
874
Supports host selection, port contention,
full line and modem
control facilities;
handles up to 44 highspeed trunk lines;
symmetric multi-proc,;
supp, up to 23 Z80As
-
1983
-
GTE Telenet
Local self-configuration program
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Yes
1979
2000
GTE Telenet
Redundant communications line processor
(ClP) with 64K byte
memory
C13-010-130
Processors
Communications Processors
GTE Telenet
TP3010-11
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications iine capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Local concentrator
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Honeywell
Information Systems
Datanet 8
IBM
3705-11
Models E1 through L4
Most vendors
Honeywell DPS 8, DPS
66, and DPS 64
IBM S/370, 30XX, and
43XX; S/360 in 270X
emulation mode only
Local concentrator
Yes
4
4
270X/370X
Yes
1
No
No
No
No
SNA
Yes
26
Yes
No
No
No
X.25
Yes
Multiple
Yes
No
No
No
X.25
Yes
4
4
Yes
Yes
4
Yes
No
Yes
Yes
Honeywell DSA (ISO)
21 to 26
4 to 19
-
9600, (19.2K netline)
None
50 to 128
24 to 40
12 to 16
56K
None
128
Load-dependent
Load-dependent
56K
Load-dependent
352
352
32
230.4K
Capacity halved
Yes
Yes
Yes
Yes
Yes
Parity, LRC, CRC
50 to 1200 bps
Yes
Yes
Ves
Yes
Yes
Yes
Parity, LRC, CRC
110 to 2400 bps
Yes
Yes
Yes (by host program)
Yes
No
No
Yes
Yes; 110,300, 1200 bps
Yes; optional, variable
Yes
No
No
Yes
Yes
LRC and CRC
Yes, via optional soft.
No
Zilog Z80 B
8
64K
Byte, block
MOS technology 6502A
8
256K
Datanet 8 (Honeywell)
16
1,536K
Byte
Proprietary
18
512K
Block
-
DMA and interrupt
DMA
DMA
DMA
GTE Telenet NCC
Async. bus
Async. bus
Async. bus
Console, diskette
Yes
Yes
No
-
Combination of software and firmware
Host, local, or VIP
Additional on host for
administration of
control
Software
-
Combination of software and firmware
Downline load from NCC
Yes, via user-created
programs
All
Yes, via user-selected
parameters
All
Yes, via user-selected
parameters
All
Yes
80%
55%
Software is customer
installable
-
7,500
65
800
37,000-49,500
215-300
GTE Telenet tariff
41,015
248
1,281 (5 yr. lease)
38,230 (E1)
159
1,385 (2 yr. lease)
26
-
128
-
-
DMA and interrupt
Interrupt
GTE Telenet NCC, cassette tape, local con.
Yes
Combination of software and firmware
Manual or downline
IPL method
Additional software supported
GTE Telenet
TP4000 Series
-
-
Download from host
NCCF, NPDA
Yes
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
-
15,345
135
76,500-157,200
495-995
GTE T elenet tariff
119,868
838
3,861 (5 yr. lease)
107,040 (L4)
485
5,455 (2 yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Yes
January 1979
1000
GTE Telenet
Yes
December 1979
650
GTE Telenet
Yes
Latest model 3rd qtr.
Early model over 500
Honeywell
Yes
August 1976
50,000
IBM
Redundant Communications Line Processor
(CLP) with 64K memory
is configurable
Multiple Microprocessor
Line Card (LPU) redundancy, common logic
redundancy and power
supply are supported;
performs virtual
circuit switching
COMMENTS
© 1983 bATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
/
(
,
"-
APRIL 1983
C13-010-13
Processors
Communications Processors
(
IBM
3705-80
Models M8l
through MB3
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNC-nONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IBM
3725
ICCI
CA20 BSC
ICCI
CA20 SNA
IBM S/370, 30XX, and
43XX; S/370 in 270X
emulation mode only
IBM S/370 (except mod- IBM S/370, 30XX, 43XX IBM S/370, 30XX, 43XX
els 115 and 125), 303X, and compatibles
and compatibles
308X, 4331. or 4341
Yes
2
2
270X/370X
No
Yes
8
6
270X and 3705 with EP
Yes
8
No
No
No
No
SNA
No
No
No
No
SNA
No
No
No
No
No
Yes
BSC (bisync.)
No
-
-
No
-
No
No
No
Yes
SNA/SDLC
57.6K
Capacity halved
256 with 3726 expansion 256 with 3726 expansion 10
128 with 3726 expansion 230.4K bps
19.2K sync., 9.6K async
None
None
10
-
No
No
No
Yes
Yes
LRC and CRC
Yes; via optional soft.
No
Yes
No
Yes
Yes
Yes
LRC and CRC
Yes, via opt. software
No
Yes
Yes
No
Async./3274 BSC
ASCII/EBCDIC
CRC-16
212-A modem compatible
Yes
Yes
Yes
No
Async./3274 SNA
ASCII/EBCDIC
CCITT
212-A modem compatible
Yes
Proprietary
Proprietary
18
1M
Block
Zilog Z80A
8
64K
Byte
Zilog Z80A
8
64K
Byte
DMA
DMA
DMA
DMA
DMA
DMA
FEP console
Interrupt
-
-
No
Yes, up to 150 meters
(492 feet)
Yes
Yes
Firmware
16
16
-
256K
Block
-
Interrupt
19.2K sync., 9.SK async
None
Interrupt
Interrupt
-
Software
Software
Firmware
IPL method
Additional software supported
Download from host·
NCCF, NPDA
Internal self-load
NCCF, NPDA, ACF/NCPPEP, EP/3725
Internal self-load
-
-
User programmability
Yes
Yes
No
No
Software separately priced
Yes
Yes
No
No
-
-
None
None
36,600 (M81)
203
1,370 (2 yr. lease);
1,610 (rental)
86,740
250
3,830 rental
8,600
60
-
8,600
60
52,600 (M83)
221
2,120 (2 yr. lease;
2,491 (rental)
Yes
August 1981
Contact vendor
Contact vendor
Contact vendor
-
-
No
Fourth quarter 1983
-
-
-
-
IBM
IBM
Second-generation
product based on
original CA 12 technology, of which more
than 400 units are
currently installed
Second-generation
product based on
original CA 12 technology
Approx. proportion of currently installed
systems supplied as turnkey systems
...
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental. $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
APRIL 1983
HONE Configurator
CF-3725 should be
consulted for actual
number of operable
lines, depending on
line speeds, protocols,
3 other variable
factors
8,600
60
March 1982
400
ICCI
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Internal self-load
-
8,600
60
March 1982
200
ICCI
C13-010-132
Processors
Communications Processors
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Icot
Icot
SUPPLIER AND MODEL
25X
(253, 254, 257)
251
Icot
Icot
352
35X
Vendors supporting X.25 Most vendors via
or async. RS-232-C
serial interlace
IBM mainframes that
support 3270 terminals
Yes
Yes
2
2
Yes
No
No
No
No
Yes
No
IBM mainframes supporting 3270s; Sperry
mainframes supporting
UTS-400s
Yes
17
17
Yes
Yes
Up to 17
No
No
Yes
Yes
No
12
12
5 to 18
5 to 18
19.2K
None
19.2K
None
19.2K
None
Yes
Yes
Yes
Async.fX.25
No
Yes, defined by X.25
Yes, up to 1200 bps
Yes
Yes
Yes
Yes
Yes
ASCII/EBCDIC & others
Yes, protocol conform.
No
No
No
Yes
No
Yes
Yes
Yes
Yes, 50 to 9600 bps
Yes
No
Yes
No
Yes
Yes
Yes
No
No
Zilog Z80
8
24K
Block
Intel 8085/8088
Intel 8085/8088
Intel 8085/8088
8
8
8
128K
Byte
64K
Byte
128K
Byte
Interrupt
Interrupt
Interrupt
Interrupt
None
None
Supervisory console
Logical console
Yes
Yes
Yes
Yes
No
8
1
No
Yes
Yes
No
No
Yes
No
Yes
18
No
No
No
No
No
4 to 8
4 to 8
4 to 8
5 to 18
5 to 18
9600
None
1
5 to 18
Firmware
Firmware
Firmware
Firmware
IPL method
Additional software supported
Internal self-load
Internal self-load
Internal self-load
Internal self-load
User programmability
Yes, via user-selected
parameters
No
No
No
User-confi9urable
control tables
No
User-configurable
control tables
No
All
All
All
All
2,950
10,000
985
7,600
85
6,400
70
4,200
50,000
400
9,850
110
38,000
420
June 1979
Icot
March 1982
75
Icot
September 1981
40
Icot
These three versions
allow protocol/code
conversion in multiple
protocol environment
Allows ASCII terminals
to emulate IBM 3270
using BSC or SDLC
protocols
Enables IBM 3270 and
Sperry UTS-400 compatible terminals to
emulate each other and
operate in an IBM and
Sperry multi-host environment; three models
are 353, 354S and 357S
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
No
April 1982
78
Icot
The primary function of
Icot 251 X.25 PAD is
to allow async. ASCII
terminals to access an
X.25 network or host
computer
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C13-010-133
Processors
Communications Processors
f
Lemcom Systems
CMC-B
Lemcom Systems
CMC-32
S/360, IBM S/370,
30XX, 43XX, and compatibles
IBM S/360, S/370,
30XX, 43XX, and compatibles
IBM S/360, S/370,
30XX, 43XX, and compatibles
IBM S/360, S/370, 30XX,
43XX, and compatibles
Ves
1
1
270X
No
Ves
1
1
270X
No
Ves
1
1
270X
No
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to lBOO bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Lemcom Systems
Distributed Network
Processor Series
Lemcom Systems
CMC-4
-
-
Yes
64
64
270X, 370X, EP
Ves
64
Ves
Optional
Ves
Optional
DMMA
4
4
3
56K
None
8
8
6
56K
None
32
32
24
56K
None
6500
1500
250
57.6K
Capacity halved
No
No
No
Optional
Optional
LRC and CRC
Optional-300, 1200
Ves
No
No
No
Optional
Optional
LRC and CRG
Optional-300, 1200
Ves
No
No
No
Optional
Optional
LRC and CRC
Optional-300, 1200
Ves
Ves
Ves
Ves
Optional
Optional
LRC and CRC
110 to 19.2K bps
Ves
Motorola 6800
8
40K
Byte
Motorola 6800
8
80K
Byte
Motorola 6800
8
320K
Byte
Motorola 6809
8
15M
Byte and block
Interrupt
-
-
No
No
No
No
No
No
No
No
-
Interrupt
No
No
No
No
-
-
FEP console
FEP console
Yes
Ves
Yes
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP console and bubble
memory
Ves
-
Interrupt
-
-
-
FEP console
Firmware
Firmware
Firmware
Software
IPL method
Additional software supported
Internal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
Internal self-load
Problem determination
aids
Self-/manual-/down-Ioad
Channel prog. simulator
& prob. determin. aids
User programmability
User-selected
parameters
Utilities only
Ves, via user-selected
parameters
Utilities only
Ves, via user-selected
parameters
Utilities only
Ves, via user-selected
parameters
All
None
None
None
25%
14,000
Contact vendor
Contact vendor
16,000
Contact vendor
Contact vendor
20,000
Contact vendor
Contact vendor
25,000
Contact vendor
Contact vendor
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
20,000
Contact vendor
Contact vendor
30,000
Contact vendor
Contact vendor
60,000
Contact vendor
Contact vendor
500,000
Contact vendor
Contact vendor
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Contact vendor
March 1977
320
Various
Contact vendor
November 1980
25
Various
Contact vendor
March 1979
110
Various
Contact vendor
1981
55
Various
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPQs available
for a fee
Microprocessor-directed
FEP; front-end polling
and console support
available; OEM discounts; RPQs available
for a fee
Microprocessor-directed
FEP; front-end poliing and console support available; OEM
discounts
Distributed MPU FEP; up
to 256 MPUs can be programmed to perform various comm. processing
functions; front-end
polling, dynamic applic. selec., & multiconsole support avail.
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1983
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
~
C13-010-134
Processors
Communications Processors
M/A-COM DCC
CP9000
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most vendors via serial
interface
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Memorex
Communications
Group 1270 Terminal
Control Unit
M/A-COM DCC
Micro-Node
ModComp
31088<3109
Most vendors via
serial interface
IBM S/370, 30XX,
43XX, and compatibles
Modcomp Classic II,
CLlI45, CLlI55, CLlI75,
IBM S/370; CDC; Cray
No
Yes
2
2
270X, 370X EP
No
Yes
No limit
Yes
Yes
Yes
Yes
No
No
No
No
Yes
VAN
Yes
4
4
No
Yes
User programmable
Yes
No
Yes
Yes
Maxnet
480
240·to 480
60 to 120
56K
None
128
128
128
56K
None
96
70
6
56K
None
256
256 to 166
Application-dependent
250K
None
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
No
Yes, for VAN
Yes
No
X.25/BSC/ ASCII
ASCII/BCD
Yes
Yes, 50 to 9600 bps
No
Yes
Yes
No
No
No
CRC
No
No
6502 and Z80
8
4M bytes
Byte
6502 and Z8000
8 and 16
64K
Byte and block
-
Modcomp 11/45/55/75
16
4M
Block
No
-
-
Yes
No limit
Yes
Yes
Yes
Yes
No
DMA and interrupt
Interrupt
-
-
Byte
-
-
Diskette
Console w /V ANS
DMA
DMA
DMA
Mag.
Yes
Yes
No
Yes
Software
Combination of software
and firmware
From host/diskette
System diagnostics
Firmware
Software
Internal self-load
System-dependent
Cobol, Pascal, Fortran
77
Diskette
DMA and interrupt
Interrupt
-
Interrupt
-
and interrupt
and interrupt
and interrupt
tape and disk
IPL method
Additional software supported
From host/diskette
Assembler & LOGOS
compilers & linker
system diagnostics
User programmability
Yes-via user created
programs
All
Yas-via user created
programs
All
No
Yes
Yes, via user-selected
parameters
Yes
None
None
All
None
Approx. 30,000
Application dependent
Offered as options;
contact vendor
Approx. 25,000
Application dependent
Offered as option;
contact vendor
14.900
126
543 mo. (3 yr. lease)
-
Approx. 200,000
Application dependent
Offered as options;
contact vendor
No
1977
575
M/A-COM DCC
Approx. 150.000
Application dependent
Offered as option;
contact vendor
No
1980
55
M/A-COM DCC
45,000
250
1,450 (3 yr. lease)
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price. $
Monthly maintenance. $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental. $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
Communications features Multi-processor deand functions programm- signed for fail-safe
operation; all comable by user
ponents totally redundant; communication
features and functions
programmable by user
-
No
1970
2,100
Memorex
Hard-wired data
communications controller
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
Contact vendor
-
-
Modcomp
Videotex information
storage and
retrieval system
available; satellite
network-interprocessor
communications link;
downline load
APRIL 1983
C13-010-135
Processors
Communications Processors
NCR Comten
3650
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NCR Comten
3670
NCR Comten
3670 Model 85
NCR Comten 3690
Models A5-E5
IBM S/370, 30XX, 308X, IBM S/370, 30XX, 308X
43XX, and compatibles; 43XX, and compatibles;
custom
custom
IBM S/370, 30XX, 308X, IBM S/370, 30XX, 308X,
43XX, and compatibles
43XX, and compatibles;
custom
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
No
No
No
No
SNA/CNA
Yes
4
4
270X, 370X, ACF/NCP
Yes
Unlimited
Yes
No
No
No
SNA/CNA
Yes
Yes
2
8
2
8
270/370X, NCP, ACF/NLF 270X/370X, ACF/NCP
Yes
Yes
Unlimited
Unlimited
Yes
Yes
Yes
No
No
No
No
No
SNA, CNA
SNA/CNA
12B
128
32 to 128
230.4K
None
384
384
96 to 284
230.4K
None
128
128
16 to 128
230.4K
None
512
512
128 to 512
230.4K
None
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Proprietary
32
512K
Byte or block
Proprietary
32
512K
Byte or block
Proprietary
32
512K
Byte or block
Proprietary
32
4M
Byte or block
DMA
DMA
DMA
Diskette, cassette
DMA
DMA
DMA
Cassette
DMA
DMA
-
-
DMA
DMA
DMA
Diskette
Yes
Yes
Yes
Yes
Software
Software
Software
IPL method
Additional software supported
See comments
NDP, CLSS1, Codel 58
See comments
NDP, CLSS1, Codel 58
See comments
Comten NDP, Codel S8,
and CL SS1
Combination of software
and firmware
See comments
NDP, CLSS1, Codel 58
User programmability
Yes, via user-sel. par.
& user programs
All
Yes, via user-sel. par.
& user programs
All
Yes, via user-selected
parameters
All
Yes, via user-sel. par.
& user programs
All
All
All
All
All
45,000
199
1,500 (2 yr. lease)
90,000
270
3,000 (2 yr. lease)
34,500
290
1,260 (2 yr. lease)
150,950
737
4,580 (2-yr. lease)
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
125,000
631
4,150 (2 yr. lease)
350,000
2,000
11,600 (2 yr. lease)
52,000
550
2,000 (2 yr. lease)
550,000
3,365
18,000 (2 yr. lease)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
March 1975
1,425
NCR Comten
No
March 1972
400
NCR Comten
-
No
1982
NCR Comten
No
June 1978
700
NCR Comten
Manual load from
diskette and download
from host
Manual load from
diskette and download
from host
Manual load from diskette and download from
host
Manual load from
diskette and download
from host
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
APRIL 1983
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-136
Processors
Communications Processors
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terrninals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
NCR Comten 3690
Models T1-U1
NCR Comten 721-11
North American Philips
Communications
System Division
MARC
IBM S/370, 30XX, 308X, NCR Century, Criterion,
43XX, and compatibles
8XX5 Systems
IBM S/370 and compatibles; Philips DS714
IBM S/370, 30XX,
43XX, and compatibles
Yes
2
2
270X, 370X, ACF/NCP
Yes
Unlimited
Yes
No
No
No
SNA/CNA
Yes
2
2
No
Yes
Unlimited
Yes
No
No
No
CNA
Yes
Unlimited
Unlimited
270X, 370X
Yes
Unlimited
Yes
Yes
Yes
Yes
Upon request
Yes; see comments
1
Multiple
128
128
32 to 128
230.4K
None
99
52-99
10 at 56K
56K
.None
Configuration-dependent
Configuration-dependent
Configuration-dependent
19.2K
Configuration-dependent
-
Yes
Yes
Yes
Yes
Yes
Yes
110 to 9600 bps
Yes
Yes
No
No
No
No
Yes
No
Yes
Yes
Yes
Yes
Yes, domestic, int'l.
ASCII/EBCDIC
CRC
110 to 9600
Yes
Yes
Yes
Yes
-
Proprietary
32
1M
Byte, block, or file
Proprietary
16
512K
Byte and block
Z80B 8-b., Philips 16-b.
8 or 16
64K or more
Byte or block
Proprietary
16
128K
Byte
DMA
DMA and interrupt
DMA and interrupt
DMA and interrupt
CRT, printer, disk
drive, mag. tape
Yes
DMA and interrupt
Combination of software and firmware .
Internal selfload
No
Combination software,
firmware, hardware
Intern. self-load, man.
Utilities
All
DMA
DMA
DMA
Diskette
-
DMA
Cassette
Yes
No
Combination of software or firmware
Load from host/disk
NDP, CLSS2, Codel 58
Software
Yes, via user-created
programs
All
No
All
Yes, via user-created
programs
No
All
All
95%
88,425
419
2,327 (2-yr.lease)
41,720
209
1,205
-
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
108,500
518
2,935 (2-yr. lease)
100,400
502
3,500
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
January 1980
100
NCR Comten
Yes
1976
Approx. 1,200
NCR Comten
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
Para dyne
Pix/Pixnet
Load from cassette
No
30,000 (inc. software)
Configuration-dependent
-
Yes
Multiple
Yes
No
Yes
Yes
-
Application-dependent
3 full duplex
56K
None
Yes
Yes
-
DMA and interrupt
Mag. tape, console
Yes
-
Contact vendor
-
200,000
-
January 1980
125
M. V. Philips
April 1976
Over 3,500
Paradyrie
Modular, microprocessor-based distributed processing system
including standard
operating system hardware & application
packages
Pix/Pixnet permits remote peripherals and
CRTs to access multiple
IBM hosts as locally
attached devices without remote TP software
-Configuration-dependent No
-
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C13-010-137
Processors
Communications Processors
Peri phonics
Datapac
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Peri phonics
T-Comm 80
IBM, DEC, Burroughs,
Most major vendors
NCR, HP, Sperry, Tandem
minis, most major vend.
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Periphonics
Telemarketer
?eriphonics
Voicepac
3780/3270
Same as Datapac
Yes, dstrb. app. proc.
-
Yes
3
3
Most std. interfaces
Yes
3
No
No
Yes
No
SNA
Yes
3
3
Most std. interfaces
Yes
3
Optional
No
Yes
Yes
SNA
Yes
12 per processor
12 per processor
370X,3803,3272,2848
Yes
7
Yes
Yes
Yes
Yes
SNA
78
78
78
9600
None
520
520
520
56K
None
16
16
16
9.6K
None
78
78
78
9600
None
No
Yes
Yes
Yes
Yes
All industry stds.
With specified modems
Yes
No
Yes
Yes
Yes, any supported
Yes
Yes, all industry std.
With specified modems
Yes
No
Yes
No
Yes
Yes
Industry stan!lards
No
If selected
No
Yes
Yes
Yes
Yes
All industry standards
No
Yes
LSI 11123, PDP lIs
16
128KB-l M w /Peripacs
Byte or block
DEC PDP-II, LSI-II mod. LSI 11/23
16
16
64K to 5M
256KB-1MB w/Peripacs
Byte or block
Internal 2 bytes
LSI 11123, PDP lIs
16
64-256KB w /Peripacs
Same as Datapac
Interrupt
Both
Both
Interrupt
DMA and interrupt
DMA and interrupt
Interrupt
DMA
DMA & interrupt
Interrupt
Both
Both
Yes
Yes
CRT, printer, mag. tape
Yes
Yes
-
Yes
Yes
-
-
Yes
Electronic orders
Yes
Yes
Proprietary software
Proprietary
EZOS (UNIX based)
Proprietary software
IPL method
Additional software supported
Download or diskette
I/O Gen, Param, (Network Definition Util.)
From host or diskette
Network Definition
Utility, Voice Dialog
Utility
Hard disk
Network Definition
Utility, Voice Dialog
Utility
Download or disk load
I/O Gen, Pave, Param
User programmability
Yes, with user selected
parameters
All
Yes, via user-selected
parameters, programs
All
Yes, via user-selected
parameters, programs
All
Yes, voice dialogues
& basic edit functions
All
75%
80%
None
75%
45,000
Approx 250 minimum
Variable w /curr. market
50,000
Approx.500
Variable with current
market
60,000
Approx. 1%
Variable w/curr. mkt.
25,000
250 min., variable
Variable w/curr. mkt.
120,000
250 minimum
Variable w/curr. market
1,000,000
10,000 (approx. 1%)
Variable with current
market
No
1978
Information not avail.
Periphonics Corporation
To 180,000 approx.
Approx. 1%
Variable w /curr. mkt.
170,000
250 min. variable
Variable w/curr. mkt.
No
1983
No
1981
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
~
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
(
APRIL 1983
No
1983
-
Peri phonics
The Datapac is a solid
state unit that can
concentrate, convert
protocol & code, serve
as a network node, and
provide fully integrated services
-
Peri phonics
Data/voice on same
line, voice response
system, network interface, nodal, solid
state audio, integrated services
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
Peri phonics
Handles data and voice
interchangeably via a
single I/O port; can
concentrate, convert
protocol & code, and
serve as a network node
C13-010-138
Processors
Communications Processors
,/
Raytheon Data
Systems
Raynet I, II, III
Raytheon Data
Systems
Raynet IV
IBM, Sperry mainframes and compatibles
IBM, Sperry mainframes and compatibles
Sperry Series
1100, Series 90
Sperry-Univac Series
1100, Series 90 .
No
16
Interface-dependent
No
Yes
1(R-I); 8(R-II&R-III)
Yes
No
No
Yes
Yes
No
16
Interface-dependent
No
Yes
8
Yes
Yes
No
Yes
Yes
Yes
4
3
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
Yes
16
16
No
Yes
No specific limit
Yes (init. host load)
Custom
No
No
DCA
47
47
Varies
56K
None
47
47
Varies
56K
Capacity halved
47 sync; 192 async.
47
47
64K
None
255 sync; 1023 async.
255
140
64K
NOM
No
Yes
No
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes, 110 to 19.2 bps
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes 110 to 19.2K bps
Yes
RDS-75oo
16
256K
Block
RDS-75oo
16
256K
Block
Sperry DCP/20
16
512K
Block
Sperry-Univac DCP /40
16
3.5M
Block
DMA
DMA
DMA and interrupt
Console, cassette,
printer
Yes
DMA
DMA
DMA and interrupt
Console, cassette,
printer
Yes
DMA
DMA
DMA
Console, disk, disk.,
mag. tape
Yes
DMA
DMA
DMA
Console, disk, mag.
tape
Yes
Combination of software and firmware
From host, cass., dsk.
-
Combination of software and firmware
Host download, casso
-
Combination softwar!l
and firmware
Host download & disk.
File transfer
Combination software
and firmware
Host download & disk.
File transfer
Yes; via user-selected
parameters
All
Yes; via user selected
parameters
All
Yes, via user-created
programs
All
Yes, via user created
programs
All
All
All
None
10%
100,000
45,000
230
925-5 yr./l,150-1 yr.
125,000
625
2500-5 yr ./3200-1 yr.
135,000
700
2,800-5 yr./
3,500-1 yr.
No
January 1982
25
Sperry
480,000
2,500
10,000-5 yr/12,5OO-1
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models.
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest lirie speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
60,000
-
-
-
-
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
-
-
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1978; 1980(R-II&R-III)
Over 100
Raytheon Data Systems
No
1980
Under 10
Raytheon Data Systems
Raynet I sup. network
control func., redundancy option; Raynet
II prov. all Raynet I
cap. plus host selec.;
Raynet III prov. all
Raynet II cap. plus
protocol conversion
Raynet IV provides all
Raynet III capabilties plus message
switching
COMMENTS
700,000
40,000
-
Sperry DCP/20
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Sperry DCP/40
(Primary Mode)
~--.j
,
'.
No
September 1979
500
Sperry-Univac
(
\.
~
APRIL 1983
./
C13-010-139
Processors
Communications Processors
(
~
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
~'
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Starnet Data Systems,
Protex Industries Inc,
Starnet II
Telefile Computer
Products FECP-X
Tandem
Non-Stop II
Telefile Computer
Products Telepac
All microcomputer vendors, most mini vendors
-
Xerox Sigma 5-9 and
Telefile TBO Series
Standalone or Telefile
TBO Series
Yes
16
16
3271,3274,3276
Yes, with the Starbus
16
Yes
No
Yes
Yes
Yes
4
10 or more
Model 7
Yes
10 or more
Yes
Yes
Yes
Yes
SNA
Yes
6
3
None
Yes
Network-dependent
No
Yes
Yes
Yes
None
Yes
B
B
None
Yes
12
Yes
Yes
Yes
No
X.25
-
1000
300 to 400
50 to 100
Up to 80K
75% to 50% of capacity
256
256
9600
None
280
280
280
19.2K bps
None
Yes
Yes
Yes
Any protocols
ASCII/EBCDIC/Baudot
LAC and CAC
No
Yes
Yes
Yes
Yes
No
ASCII/EBCDIC
No
110 to 9600 bps
Yes
Yes
Yes
Yes
Async to 3270 BSC/SDLC
ASCII to EBCDIC
Parity, LAC and CAC
50 to 9600 bps
Yes
Proprietary
16
BM per processor
Block
TCP-16
16
12BK
Byte
M6BOoo
16
64K Bytes MOS AAM
Byte or block
DMA
DMA
DMA
Disk, mag. tape, &
console
Yes
DMA and interrupt
DMA and interrupt
DMA and interrupt
DMA and interrupt
FEP console, disk,
diskette, mag tape
Yes
Combination of software and firmware
Download from host
Combination of software & firmware
Int. selfload, dskt.
Program dev. software,
utilities
-
16
2
19.2K asyn, 56K bisyn.
None
Yes, with Starbus
Yes
Yes
Async to 3270 BSC
ASCII, EBCDIC, Baudot
-
None
Yes
Intel BOB5
96K
l-
Byte
Interrupt-poll
DMA
Interrupt-poll
-
Yes
Yes
IPL method
Additional software supported
Internal self-load
None
Combination of software and firmware
Manual-load from disk
Cobol, Fortran, Mumps
computer, Database, TP
monitors
User programmability
Via user-selected
parameters
All
Yes, via user-created
programs
Yes
Special applications
only
Yes, via user-selected
parameters
Special applications
only
All
10%
25%
BO%
5,Boo
BO/mo. service cont.
Third party
200,000
1,000
Third party
35,000
425
712 (3 yr. lease)
30,000
350
615/3 yrs.
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
19,500
160/mo. service cont.
Third party
1,000,000
5,000
600,000
4,700
12,200 (3 yr. lease)
95,000
1,100
1,950 (3 yrs.)
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
Yes
June 19B1
15
Factory
-
No
1976
10
Telefile
No
October, 19BO
17
Telefile
Hardware and software
compatible with all
Xerox and Telefile
mainframes
Provo mode for mult.
CCITT X.25 pub. or
priv. packet netwk.;
Sup. all ASCII based
hosts and terminals;
interface to SNA/SDLC
networks
Firmware
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
(
Host-independent network node processor;
supports multi-vendor
interfaces, protocols,
& code sets
-
1976
3,000
Tandem
Aendundant processing
provides 100% "up
time"
-
~
APRIL 1983
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
.--~-
- .--------~~,
<
C13-010-140
Processors
Communications Processors
Thomas Engineering
MZ-8,Q
Thomas Engineering
8770/20
IBM/370, 30XX, 43XX,
Series 1; Honeywell~
all models using VIP
IBM/370, 30XX, 43XX,
Series 1; Honeywellall models using VIP
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive die:-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
User programmability
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
COMMENTS
No
No
-Yes
-
TRT Data Products
Noifield
Communications
System 300
Most major vendors
No
-
TRT Data Products
Norfield
Communications
System 400
Most major vendors
No
-
-
1
No
No
Yes
Yes
SNA
Yes
1
No
No
Yes
Yes
No
32
32
32
19.2K bps
None
32
32
32
19.2K bps
None
9600
70%
64
16
12
19.2K
70%
Yes
Yes
No
Async/BSC/VIP/SDLC
ASCII/EBCDIC
Parity, LRC and CRC
50 to 200 bps
Optional
Yes
Yes
No
Async/BSC; async/VIP
ASCII/EBCDIC
Parity, LRC and CRC
50 to 200 bps
Optional
No
No
No
Yes
Yes
Yes
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Zilog Z80B
8
1M
Byte and block
Zilog Z80A
8
90K
Byte and block
Data General 4X
16
64K
Interrupt
DMA and interrupt
Interrupt
Interrupt
Interrupt
-
-
-
Data General 4X
16
256K
-
-
-
Yes
Yes
Combination of firmware/software
Cassette/diskette/ROM
Program development
system; CP/M-compatible packages
Software
Software
Software
Load from diskette
Program development
system; CP /M-compatible packages
Yes, via user-created
programs
All
Yes, via user-created
programs
All
All
Yes
Yes
Yes
Yes
Yes
32
8
Manual-loading disk.
Yes
Yes
Yes
Yes
Yes
-
j
Manual loading disk.
-
-
No
No
-
-
95%
75%
25%
4,620 for 4 lines
Third party
Third party
6.454 for 4 lines
Third party
Third party
65,000
500
Contact vendor
75,000
600
Contact vendor
12,885-32 Ins.,2 dsk.
Third party
Third party
13,230-32 lines, 2 dsk
Third party
Third party
100,000
1,000
Contact vendor
300,000
2,000
Contact vendor
-
-
December 1981
150
General Electric
November 1978
260
General Electric
No
1975
35
Norfield
No
1978
20
Norfield
Sys. prov. emul. of
IBM 3277/78 Honeywell
VIP 7700 term. using
ASCII CRTs, also
"pass-thr." supp.
of printer & other
devices; line speeds
indepen. set any comb.
Sys. provo emul. of
IBM 3277 & Honeywell
VIP 7700 term. using
ASCII CRTs, also sup.
of printers & other
dev.; line speeds are
independently set, in
any combination ..
Custom systems
available
Custom systems
available
--_._-
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
APRIL 1983
C13-010-141
Processors
Communications Pro.cessors
l,
~
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major vendors
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max, no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no, of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
$.'
Network architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
IPL method
Additional software supported
No
Westinghouse Canada
Electronic Systems
Division
W1655/1656
IBM PARS, Sperry
Uniscope 100 & UTS20
No
-
-
-
Yes
4
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
-
-
16
16 at 4800; 8 at 9600
512
32
24
56K
70%
19,2K
Capacity reduced
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
U100/P1024
IPARS/P1024
Yes
No
No
Perkin-Elmer 3230
32
4M
Intel 8085 (dual)
8
32K
Block
-
-
-
Interrupt
DMA and interrupt
Interrupt
Yes
Yes
Yes
Combination of software and firmware
Manual loading disk.
Firmware
Download, EPROMs
-
-
User programmability
No
No
Software separately priced
-
Specials
None
25%
250,000
500
Contact vendor
-
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
1,000,000
3,000
Contact vendor
-
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1982
0
Norfield
No
September 1976
300
Third party
Custom systems
available
Remote line polling
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
I
TRT Data Products
Norfield
Communications
System 500
12,000
Third party
20,000
Third party
"
•
APRIL 1983
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-101
Communications ProcessorsManagement Perspective and
Equipment Specifications
A communications processor, is a digital computer that
has been specifically programmed to perform one or more
control and/ or processing functions in a data communications network.
Communications processors do not represent a new
product concept. During the computer industry's second
generation, in the early 1960s, such processors were
offered by- several of the major mainframe suppliers. In
almost all such early uses, the systems were used primarily
in message switching applications, acting simply as a
message router and dispatcher in a data communications
network. Pioneers included Control Data's 8090/8050,
General Electric's DATANET-30, and IBM's 7740. Also,
as early as March 1963, Collins Radio Company (now
Rockwell-Collins) delivered its first Collins Data Control
programmable communications system.
What is new is a continually strengthening trend towards
providing multi-functional products. Like the computer
industry as a whole, communications 'processor vendors
are capitalizing on improved technology and delivering highly flexible but cost-effective products based
on the latest microprocessor, memory, and other high-tech
components. Processors functioning as communications
line multiplexers, host independents, concentrators,
protocol converters, switches, terminal controllers and/ or
distributed processing nodes are starting to flourish as
communication processor muItifunctionality becomes
increasingly common.
This trend continues to take its toll-by attrition or
consolidation-among traditional front-end processor
vendors. For example, in 1982, Rockwell-Collins
discontinued marketing their front-end processors. NCR
and its Comten subsidiary have recently consolidated their
operations, with all products now headquartered at the
NCR Comten facility in St. Paul, Minnesota. Burroughs
Corporation has retrenched itself by acquiring Systems
Research, Inc., a small but innovative independent
specializing in Burroughs-oriented communications
(The Starnet II from Starnet Data Systems is one of an emerging
breed of new communications processor products. Introduced
in February of 1982, it acts as a host-independent processor,
protocol converter, and switching device.
JUNE 1982
Processors
Front-end processing continues to be the main
staple of the communications processor market.
but increased activity is generated from non-frontend processing products. Communication processors serving as multiplexers. concentrators.
protocol and code converters. terminal controllers.
distributed processing nodes. and/or processors
independent of a host are becoming more
prevalent. The comparison chart section of this
report outlines the major characteristics of some 71
products offered by 39 different vendors. We have.
also reported on the experience of 553 users
representing 3.270 installed communications
processor systems.
systems, and making it a wholly-owned subsidiary.
Similarly, Amdahl acquired TRAN Telecommunications.
Despite any setbacks that have occurred, most analysts
predict a healthy growth rate of about 20 percent per year
through 1985. Most mainframe vendors have continued to
enhance their existing communications processor product
lines, and several relatively new lines are available such as
Burroughs' CP Series, Sperry Univac's DCP/40, and
Amdahl's 4705. Rumors of IBM's replacement of its 3705
have become stronger in recent months, and several
industry observers have speculated that its introduction
could take place before the end of 1982. Users can now
choose from a wide variety of communications systems
that support increasingly sophisticated front-end
processing, intelligent remote concentration, network
processing, and other communications processing
capabilities.
Developmental Factors
Several major developments have led to the dramatic
increase in the use of communications processors, and to
their continual development into machines with
progressively higher capacity, capability, and compatibility.
The first major development was recognizing that the data
communications functions must be segregated from other
data processing functions. This resulted in modular
communications software packages and communications
interfaces that permit alteration of the communications
environment without major surgery to the hardware
and software. It also permits the organization of
communications processing functions, relative to other
processing functions, along assembly-line principles. The
assembly-line technique segments a job into discrete
elements for exclusive execution by specialized persons or
equipment; the assembly-line total output significantly
exceeds the output of the same persons or equipment with
each performing the total job. The development of
specialized components to perform essential line handling
functions resuJted in the front-end processor, which freed t:>
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-102
Processors
Communications ProcessorsManagement Perspective and
Equipment Specifications
I:> the host processor of this time consuming task. A frontend/host configuration is able to handle a significantly
greater data volume than a single processor with
equivalent power that performs both the. line handling and
the data processing function.
The second major development was the introduction of
the microprocessor. Now a standard item utilized in all
types of electronic componentry, the microprocessor
permits implementation of sophisticated processing
functions at increasingly low cost. Complex communications processing tasks once handled by special-purpose
hard-wired controllers are now accomplished by
inexpensive microcomputers that, when properly designed
and programmed, are no more complicated to deal with
than disk drives. And the fact that the costs of transmission
facilities continue to increase rather than decrease justifies
placement of communications processing equipment not
only at the host site, but throughout the data
communications network.
Technical innovations in the use of microprocessors
continues to improve price/ performance of new
communications processors being introduced on today's
market. For example, throughput capabilities are
enhanced by using multiple microprocessors within the
communications processor to perform specialized
functions. Altering the microcode or stored logic (either
directly by the user or indirectly by such features as IBM's
Extended Facilities) has added a new dimension to
throughput improvement techniques. Multiport memory
access has facilitated warm-start back-up systems. Virtual
operating systems are taken for granted and full-capability
data base management systems are being given serious
consideration by installations previously reluctant to
accept the associated CPU overhead.
Intimately tied to the evolution of intelligence for
communications processing equipment, is the parallel
development of intelligence for remote data processing
equipment. The assembly-line concept can be extended to
all segments of a network, in which many small systems
perform specific, specialized communications and data
processing tasks independently of the host computer. This
decentralized or distributed data processing has given rise
to a new type of data processing module: the small
processor or minicomputer which performs both data and
communications processing. Honeywell's DPS/6 and
Sperry Univac's V77 family of minicomputers are two
examples of processors which can serve either as standalone processors, or as distributed systems which offer
significant communications control capabilities.
A third, and often overlooked, influence on the
development of communications processors is the effort
on the part of most vendors towards standardization,
particularly for lower-level activities, such as physical
interfacing and connection establishment, maintenance,
and release functions. This on-going effort, along with
hardware architectural improvements, is reducing the
investment, inventory, and software support necessary to
support a variety of different terminal and line disciplines,
which are different for few justifiable reasons. Standardization, in addition to reducing costs to existing users,
will continually increase the user base that can
economically justify the use of electronic communications
in their operations.
For higher level functions, most of the large mainframe
and minicomputer manufacturers have codified their own
communications standards by setting down a set of rules,
or "network architecture," that governs how its software
and hardware products can be used to create a network
structure. IBM's Systems Network Architecture, DEC's
DECnet, Sperry Univac's Distributed Communications
Architecture, and Honeywell's Distributed Systems
Environment are examples of such architectures.
Although not compatible with one another; most of these
architectures generally follow the recommendations of the
European-based International Standards Organization
(ISO), which has suggested a reference model for network
architectures called Open Systems Interconnection (OSI).
Among the standards recognized by OSI are ISO's HDLC
link-level protocol and the CCITT X.25 packet-switching
interface. Minor variations of the international HDLC or
IBM's version of HDLC, which is called SDLC, are now
supported by many suppliers of communications
equipment. Moreover, in the past year, many vendors
have announced CCnT packet-level X.25 support in the
United States. The X.25 capability permits interconnection of equipment via private (dedicated) or public
packet-switching networks. Several public packetswitching networks are now or will soon be operational in
the U.S., including Tymnet, Telenet, Uninet, Autonet,
and Compunet. An X.25 package offered with a communications processor product is generally certified as
compatible with one or more of these public data
networks.
,/
The direction of the communications processor market is
directly affected by the development of these and
similar standards, since the communications processor is a
primary vehicle for their implementation. As the trend
towards standardization progresses, the market for
communications processors should continue to
strengthen.
Communications Processor Components
The essential components of every communications
processing system are the following:
I. Processor. The processor element is a stored-program
digital computer of almost any size. ,It must have its
own main memory, but it mayor may not use on-line
peripheral devices. The processors should have
excellent interrupt and/ or direct memory access
(D MA) handling and strong bit manipulation
capabilities.
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
JUNE 1982
/
t:>
C13-01 0-1 03
Communications ProcessorsManagement Perspective and
Equipment Specifications
(
2. Central processor interface. When acting as a frontend, the communications processor must include the
proper hardware interface to permit it to connect
directly to a standard input/ output channel of the
central processing unit (or host computer). Such an
interface should permit the host computer to
communicate with the front-end processor as if it were a
standard peripheral device control unit, requiring little,
if any, operating system software modification. When
acting as a remote processor, support for data
communications line interfacing that connects the
processor with the host computer(s) must be provided.
3. Communications multiplexer. This component
provides a logically independent data channel into the
communications processor's main memory for every
transmission line being served. The multiplexer serves
as the communications processor's functional interface
with the data transmission lines. Control of incoming
and outgoing data is coordinated between the
mUltiplexer and the processor via interrupts or direct
memory access (DMA).
Processors
2. Character and message assembly. Bits are assembled
(and disassembled) into parallel characters, and/ or
control characters are recognized to permit the
assembly and disassembly of entire messages. Data
can be handled at varying line speeds and in
synchronous or asynchronous formats, with startstop bits and synchronizing characters handled
automatically.
3. Code and protocol conversion. The data transmission
codes (such as Baudot, ASCII, etc.) and protocolprescribed formats are converted into structures that
are equivalent to the hosts native data code (such as
EBCDIC) or" conform to the formats of more efficient
I>protocol procedures.
4. Line interface units. These components are hard-wired
devices that link the multiplexer with the modems that
terminate each communications line. Like the modems,
the line interface units are specifically tailored to serve
the speed transmission characteristics of the lines they
terminate. The lines are, in turn, generally selected
according to the transmission requirements of the
remote terminal devices.
5. Software/firmware. The communications processing
hardware components become an integrated, functioning system only through the inclusion of storedprogram logic (either firmware or software)-some
generalized, and some highly specialized. The programs
should include terminal control, line control, message
control, and central system interface procedures.
Depending on the supplier, the user may have to
provide some portion of the software required to
implement specific requirements.
Communications Processor Functions
Because a communications processor is essentially a
computer, it can be programmed to perform an almost
limitless variety of functions. But in its role as controller of
a data communications network, the specific functions
generally programmed are those that relate to data and
message control. The following functions are the most
important ones offered with the more comprehensive
communications processing systems. Some systems will
not provide all these functions, as all are not required in
specific installations.
1. Line control. This involves the periodic polling of
terminals to determine readiness to transmit and
receive data. Automatic call answering, acknowledgement, and dial-up can also be handled.
JUNE 1982
The Memorex 1270, depicted above, is a hard-wired communications controller, and as such, does not qualify as a true
communications processor. However, since its announcement
over a decade ago, the 1270 has proven so functional, so costeffective, and so reliable that it significantly impacts the IBM
270X-emulation segment of today s communications processor
market, and therefore deserves mention in this report.
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHI81TED
C13-010-104
Processors,
Communications ProcessorsManagement Perspective and
Equipment Specifications
4. Data and message editing. ' This is a general function
that can include application-oriented reformatting,
removal of spaces and zeros (and other kinds of data
compression), and other data restructuring to permit
more efficient data transmission and more efficient
processing by the host computer.
5. Error control. Using both hardware and software
techniques, the communications processor can detect
and correct data transmission errors before they reach
the host computer.
6. Message buffering and queuing. The communications
processor can buffer several messages in its main
memory before passing them to the host computer,
with the intention of interrupting that computer as
infrequently as possible. Also, if the host computer
cannot process incoming messages as, fast as they
arrive into the system, the communications processor
can queue these messages in its own auxiliary storage
units, such as disks or magnetic tape units, and can
transfer these messages to the host computer when
processing time becomes available. Queue management can be arranged in several different ways,
including a system of priorities.
7. Message switching. When the communications
processor serves more than one host computer, it will
analyze message headers and addresses and send each
incoming message to the proper destination. This
situation can occur when several computers share a
data communications network while each remains
dedicated to specific applications.
8. Message answering. Certain messages, such as simple
inquiries, can be completely processed by the
communications processor without any contact with
the central data processing system. Since many
communications processors permit attachment of online auxiliary storage units, these processors can store
and access their own private data bases. Some systems
also permit the communications processors to directly
access the auxiliary storage subsystems and data files
of the host computer.
9. Message recording. Vital inbound messages can be
passed on to the host computer while being
simultaneously recorded in the communications
processor's auxiliary storage. Such message recording
can assist in system restart operations in case, the
central system should malfunction and lose either its
messages or the results of processing the messages.
Also, it may be advisable in some systems to store a
journal record of every message received during each
processing period.
10. Statistics recording. The communications processor
can keep a running record of all data communications
traffic, including such statistics as total' number of
messages processed, number of messages delivered to
each destination, number of line errors, average
length of time in queue, number of busy signals, etc;
These statistics can be dumped on de1;lland or in the ,
form ,of reports at the end of each processing cycle.
Other application-oriented functions can be programmed
by the communications processor supplier, by the user, or
by some combination of the two. It must be remembered,
however, that the communications processor, like the host
computer, has only a finite amount of processing power.
The more functions that are added to it in order to relieve
the host computer, the more likely it is to run out of power,
especially in active, growing communications networks. A
communications processor pushed beyond its capacity will
result in lost messages and, ultimately, in system failure.
Advantages of Communications Processing
Communications processors are enjoying increased
popularity III various parts of data communications
systems because they are demonstrating themselves to be
more and more effective on a price/performance basis.
Factors that can contribute to this price/ performance edge
include the following:
1. Flexibility. Communications processors are designed
to handle many line speeds and transmission
characteristics in uniform or interchangeable circuitry
and to support a wide variety of remote terminals from
the mainframe and independent suppliers, regardless of
their transmission speeds, line control conventions,
synchronization techniques, and data codes. And since
they can be modified at any time and at comparatively
low cost by user or vendor, they are eminently well
suited to handling key roles in data communications
systems, which are typically characterized by,
bewildering variety and constant change. As advances
in communication line facilities are made by the
common carriers, and also by the independent
companies, making available new, faster, and lowercost transmission services, the advantages of this
flexibility become eminently important in guarding
against system obsolescence.
2. ExpandabiUty. Communications processors permit
relatively easy growth of the data communications
network, principally by adding line interface units and
modifying the control programs.
3. Distribution of labor. Since these processors can be
programmed to perform varying amounts of productive processing, often in conjunction with their own online peripheral devices, they can share portions of the
overall processing load with other processors in the
system-including the central processor. Peak loads
can be more effectively handled and critical bottlenecks
more likely avoided. In the case of a front-end
processor, controlling the entire data communications
subsystem will relieve the system's central processing
unit on two counts: processing time and main memory
space. Central control of data communications
networks can consume 40 to 50 percent of the available, l::?'
© 1982'DATAPRO RES~RCH.CORPORATION; DELRAN, NJ Q8Q75 USA
REPRODUCTIONPROHfElITEQ,
JUNE 1982
/
C13·010·105
Communications ProcessorsManagement Perspective and
Equipment Specifications
I:>
processing time in typical situations. And the resident
software control routines can easily consume in excess
of 50K bytes and frequently use up to 300K bytes or
more of main memory space, depending on the
functions performed. Efficient utilization of communications processors can provide almost full relief in both
processing time and memory space overheads. (If the
host processor is not overburdened, the need for a
programmable unit may be harder to justify.)
4. Fail-soft capability. In data communications systems
that include at least one other computer, programmable communications processors can provide some
form of continued system operation when one or more
of the other computers become inoperative. The degree
and effectiveness of this fail-soft capability depend not
only on the capabilities of the processor, but also,
perhaps more importantly, on the skill displayed by the
system architect in making provisions for redundant
components and fall-back procedures.
,r
5. Independent processing. When communications
processors are not involved in their principal data
communications tasks, they can often be used as standalone data processing systems-provided, of course,
that their configuration includes some peripheral
input/ output devices. Simple media conversion tasks,
such as card-to-tape and tape-to-print, can be valuable
by-products from these otherwise communicationsoriented processors, and localized time-sharing can
yield added benefits. In off-line mode, the processor can
also be adapted to serve specialized I/O devices, such as
plotters and OCR devices, that the central system may
not be able to handle.
Potential Problems
Communications processors deserve careful investigation
because of the vast variety of equipment currently
available. Such investigations should include as many
probing questions as possible, because there are
potentially serious pitfalls to be avoided.
One potential problem is the question of overloading the
communications processor, with the resultant loss of data.
Sophisticated data and message control programs will
consume large quantities of the communications
processor's computing and memory facilities, just as they
do in a centrally-based communications system. A
tendency toward overloading can easily negate any
apparent advantages of expandabHity and growth
potential.
(
Another serious question is that of software. The body of
software required for terminal control, line control, and
message control activities, not to mention applicationoriented pre-processing, is unquestionably complex. It is
also vital to the operation of these systems. The
prospective user must determine whether or not the
supplier is capable of supplying this software, at what level
of completeness, with what assurance of bug-free stability,
JUNE 1982
Processors
with what chances of interfacing smoothly with the central
system software, and with how much installation
assistance. Obviously, if the software doesn't work
properly, the system is of little value. From another point
ofvi~w, a system whose software works but performs very
few and very basic functions may be inadequate for present
or future needs.
Another consideration is that some communications
processor hardware/ software combinations may require
far more time and effort to install and make operational
than others, especially when the supplier of the
communications processor equipment is different from
that of the host computer system. Apart from the
traditional problems (real or imagined) of divided vendor
responsibility, there exists the very real problem of
integrating two completely different sets of hardware and
software.
A currently operational data communications installation
which is considering replacing hard-wired communications controIler(s) with a more sophisticated communications processor must carefully evaluate the problems of
conversion. Beyond the usual problems of data integrity
and the logistics of arranging the conversion process, the
user may also be faced with the prospect of modifying
either the central system control software or the body of .
application programs that use the communications
network.
Evaluating a communications processing system on a
cost/value basis is extremely complex and can be almost
meaningless when performed in the abstract. Costs will
vary with the size and diversity of the network being
controlled, with the size and processing power of the
communications processor, with the number of control
and preprocessing functions incorporated (software is
expensive, whether hidden in a "bundled" system price or
not), and with the number of on-line peripheral devices.
Adding functions that will permit use of "foreign"
terminals, relieve the central processor of intolerable
overheads, and allowing independent and back-up
processing may increase the costs but will also increase the
value. In order to evaluate the cost of the communications
processor in terms of the potential cost savings throughout
the system, an effort must be made to associate specific
dollar figures with the expected values to be derived from
one data communications system versus another. In
summary, it should be clear that costs and values of
communications processing can be assessed only in terms
of specific situations and specific systems.
Sources of Supply
One of the most interesting aspects of the story on
communications processors is that computer users can
now obtain them from literally dozens of vendors, with
differing product implications depending on the source
selected.
I:>
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-106
Processors
Communications ProcessorsManagement Perspective and
Equipment Specifications
t> Designers
of the data communications system will
probably first contact the supplier of their present or
planned mainframe computer to investigate its offerings in
the area of data communications. If communications
processors are strongly promoted as the best (sometimes
only) way in which to construct efficient, fully supported
systems, the designers will usually go along with the
recommendations of the mainframe supplier. The
designers are comforted by the belief that their data
communications subsystem will be fully supported and
will interface efficiently with the central processing system.
It is in this regard that developments such as IBM's SNA
and DEC's DECnet increase in importance to systems
designers.
cations and processing equipment, the proposed system
may never get past the design stage.
But not all mainframe suppliers are equally advanced in
their data communications product line, and not all offer a
selection of communications processors supported with
product-line software. Users not fully satisfied with the
offerings of their mainframe supplier can investigate the
wares of other promising suppliers, most of whom offer
assurances that their communications processors can be
"plug-compatible" with either the hard-wired or
programmable communications controllers of the
mainframe supplier, or at least with its data communications hardware and software interfaces.
For example, there are at present two distinctly different
kinds of front-end processors. The first and more basic
variety is designed to simply replace the functions and
services of the central system's hard-wired controller. It is
meant to be a plug-compatible replacement, requiring few,
if any, changes to the central system's communications
control software or the user's application programs. It
does not necessarily relieve the central system of any
software control overheads, but simply provides a more
flexible interface to the communications network for
accommodation of additional and varied lines and
terminals in the future.
The minicomputer manufacturers constitute one
prominent group of suppliers who are actively pursuing
the communications processor market with products that
can either stand alone or interface smoothly with the
mainframe equipment of other suppliers. Almost any
currently marketed minicomputer is capable of serving as
the fundamental building block of a communications
processor, and many include communications hardware
and specialized software packages to permit them to serve
effectively as complete communications processing
products.
A major source of integrated communications processing
products is the independent systems houses, especially
those that specialize in data communications systems.
Companies such as these will generally provide complete
hardware/software packages, including communications
and central computer interfaces. In many cases they will
accept full responsibility for the design and implementation of the entire data communications system. Such
independent companies are generally well qualified in
producing effective data communications systems, but
prospective buyers of such systems must still consider the
effects on the total system of dividing responsibility
between at least two principal suppliers (communications
and central system) and assure themselves that the
products and systems of the several involved suppliers will
indeed interface properly and function harmoniously.
Regardless of which type of supplier is selected, the buyer
should show partiality to those vendors who will not only
guarantee turnkey installation of their equipment but will
also provide plans for future growth. If the user is faced
with the formidable task of interfacing and integrating a
variety of impressive but highly dissimilar communi-
Buying Guidance
The communications processing products have not
matured to the point where their descriptive terminology is
in any way standardized or consistent. As a result,
prospective buyers must make every effort to determine
exactly what they will be getting and what they will not.
The sales brochures and technical manuals are often not
sufficiently informative (and sometimes downright
misleading).
The most prevalent examples of this type of front-end
processor are the many available units designed to replace
or "emulate" the IBM 2701 Data Adapter Unit and the
IBM 2702 and 2703 Transmission Control Units. These
front-end processors function with the IBM System/360
or System/370 computer systems through the standard
IBM BTAM, QTAM, TCAM, and VT AM communications control software.
The second and more powerful variety of front-end
processor is designed to replace not only the functions and
services of the hard-wired controller, but also most or all of
the data communications control functions normally
performed by the central system's processing unit and
resident software. This variety of front-end processor, by
freeing the central processing unit for productive work,
provides valuable advantages not only in data communications flexibility, but also in systems throughput.
It is possible that a user may want to install the basic kind
of front-end processor initially and then gradually add
functions to it to relieve the central processing unit's
communications overheads. However, the user must make
sure that the selected front-end processor has enough
processing and memory capacity to permit the gradual
build-up of substantial message control routines, and that
the various responsibilities of both the vendor and the user
are clearly assigned.
/
In the case of systems performing line concentration,
network node, and remote processing tasks, an equally
wide range of capabilities is represented by current product
offerings.
t>
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
JUNE 1982
/
Communications ProcessorsManagement Perspective and
Equipment Specifications
(
1:> Another buyer's tip is to look for the word "turnkey."
Turnkey installation of communications processors
usually means that the supplier takes on full responsibility
for hardware, software, and interfaces required to
essentially "plug in" the product. From a user's point of
view, this approach is highly desirable, since it can save
money, time, and aggravation. But the user must still
determine what product with what promised functions is
being offered on the turnkey basis. It may still be a
somewhat limited product.
A low list price can be totally misleading, since it may
include only the basic processor hardware and an
associated communications multiplexer. The cost and
effort of establishing the proper interfaces and writing the
all-important software can be dropped squarely on the
buyer, who may have been trapped by an attractive lowprice bid.
Since software development is such a critical question, the
buyer should determine early in the proceedings exactly
what software is provided with the basic system and at the
basic price. If certain software is lacking, such as specific
remote terminal handlers or message queuing routines,
then implementation and integration responsibilities
should be clearly fixed, and with firm price quotations.
··1
l
The smart buyer will also ask the competing bidders for
clear statements of service and support after installation.
Since data communications subsystems can be complex
and demanding in any environment, it must be considered
an extremely valuable system feature if the prospective
supplier of the communications processor offers to assume
full operating and service responsibility for the externally
controlled communications network that is directed by his
product.
When considering a communications processor from a
source other than the supplier of the central computer
equipment, the buyer should insist on receiving concrete
performance data, drawn from installed systems, to
substantiate the supplier's claims. The buyer should
beware if the supplier refuses to back up his claims with
actual case studies. As further evidence of proven
performance, the buyer should personally contact as many
previous users as possible, probing not only for their
degree of satisfaction, but also for the extent to which the
installed systems reflect his own intended system design
and functional objectives. However, even in highly
specialized reference accounts, meaningful information
can be derived regarding the supplier's competence and
willingness to help, and the basic reliability of the
hardware/ software package.
(
When the proposed supplier is a major mainframe
manufacturer, the buyer will also want evidence of proven
performance. This evidence should apply to the overall
performance of the total, integrated data processing
system, and not just the communications subsystem.
When the mainframe supplier offers a choice of several
levels of processing capability (as several now do), then the
buyer will again want specific, tangible performance data
JUNE 1982
C13-010-107
Processors
to justify selection of one over the other. Of course, the
mainframe supplier can forcibly persuade adoption of one
model over the other, even without offering convincing
performance data, by simply indicating that the newer
product will receive all future support and that the former
one will be essentially dropped from the product line.
User Experience
Datapro is proud to present the first edition of our
Network Users Survey. The survey is based on results
received from questionnaires mailed to a cross-section of
Data Communications magazine subscribers.
The extensiveness of the survey serves to broaden
considerably the scope of data communications user
responses that has been presented by Datapro in the past,
in terms of both the number of responses and the variety of
vendors and equipment models represented. This in turn
creates for our subscribers a more informative picture of
networking equipment usage patterns, as well as a more
comprehensive table of user ratings. The new survey takes
the place of our traditional practice of including a separate
survey questionnaire in each of five supplements to cover
the following subjects: facilities, moderns, communication
processors, line multiplexers, and testing equipment.
Survey Methodology
A questionnaire was designed and produced by Datapro
and mailed by Data Communications personnel in
November 1981 to approximately 10,000 addresses
selected at random from a cross-section of Data
Communications' U.S. end-user subscriber base.
The questionnaire contained 37 questions, and was
divided into six basic parts. In the first part, users were
asked to provide information concerning the general
characteristics of their data communications networks. In
each of the remaining five parts, the users were asked to
specify within a given category the types of data
communications equipment and services being used in
their networks, and to provide usage information and
equipment ratings on each type. The five categories of
equipment/ services included: data communications
facilities, moderns, communications/network processors,
line multiplexers, and testing equipment. The questionnaire allowed the user to rate up to two vendor/model
types within each category of equipment (three
vendor/model types for the Modern category and three
vendors for the Facilities category). The results of each of
these five parts will be shown only in the Datapro report on
that particular equipment category. The results of the
Communications Processors questions arc shown in this
report.
When Datapro received the returns, they were audited by
our senior level editors. All forms were carefully examined
for validity before being sent for tabulation. The Data
Communications labels were used for initial validation
and identification. Responses to specific questionnaire
sections or individual questions were disqualified!:>
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13.-010-108
Communications Proce.SSOI'S. ManagemenlPerspective and
Equipment Specifications
Processors
TABLE 1 USERS' RATINGS OF COMMUNICATIONS PROCESSORS
Vser Ratings,'
Communication
.Processor Manufacturer
and Model
Number
of. User
Responses
Number
of Units
Installed
IG
WAI E
Action/Honeywell, all models
Amdahl 4705
3-
.3
Ease of
Installation
OVerall
Satisfaction
3.0
1
Ip
IF
1
I E I G I F IP
WA
Hardware
, Reliabilit\'
ThrQughput
1
0
2.3
0
l'
2
3.2
2
2
WA
I E I G IF lp
IF tp
IG
WAlE
0
3.0
1
1
1
0
2..7
0
2
1
O·
1
0
3.6
3
2
0
0
3.4
2
3
0
0
0
3.3
2.9
3.2
3.3
3.2
2
2
2
6
12
0
3
2
5
0
0
0
0
0
3.7
3.6
3.4
3.0
3.3
2
5
3
2
12
1
3
1
9
14
0
0
1
10
1
3
1
2
7
3
0
0
0
0
0
2
3
0
0
1.
4
1
5
11
0
3
3
8
14
1
1
1
0
3
0
0
0
0
0
2.7
3.4
2.9
2.9
1
1
2
3,
7
1
3
a
6
13
0
4
7
0
1.
0
0
1
3.4
2
3
0
0
3.0
0
5
0
0
3.2
2
2
1
0
3.4
3
1
1
0
21
3.4
2
3
0
0
3.4
2
3
0
0
3.2
1
4
0
0
3.4
2
3
0
0
10
223
3.4
6
2
2
0
3,2
4
4
2
0
3.4
6
2
2
0
3.4
4
6
0
0
8
528
3.4
4
3
1
0
3.0
1
3
1
0
3.0
1
3
1
0
3.8
4
1
0
0
5
14
2.4
0
2
3
0
1.4
0
0
2
1
2.4
1
0
4
0
2.8
0
4
1
0
DEC
PDP 11/34
PDP 11140
PDP 11170
Others 8< unspecified
Subtotals
4
3
5
8
20
17
12
7
71
107
3.5
3.3
3.6
3.1
3.4
2
1
4
1
8
2
2
0
7
11
0
0
1
0
1
0
0
0
0
0
2.8
3.0
3.6,
3.0
3.1
1
1
3
1
6
1
1
2
5
9
2
1
0
1
4
0
0
0
0
0
2.8
2.3
3.0
3.4
3.0
1
0
1
3
5
1
1
3
4
9
2
2
1
0
5
0
0
0
0
0
3.3
3.0
3.4
3.0
3.2
2
1
3
1
7
1
1
1
6
9
1
1
1
1
4
0
0
0
0
0
GTE Telenet, all models
5
26
a.o
0
5
0
0
3.0
0
5
0
0
3.0
0
5
0
0
2.8
0
4
1
0
5
8
3.4
3
8
5
13
29
4
18
7
33
62
3..4
3.0
3.4
3.3
CCI, all models
5
11
Control Data, all models
5
Codex 6000
Burroughs
SRI, all models
DCP
B874
Others 8< unspecified
Subtotals
Data General, all models
.
.
3
2-
,
DCA, all models
Harris, all models
3
11
3.7
2
1
0
0
3.7
2
1
0
0
3.0
0
3
0
0
3.3
2
0
1
0
Hewlett-Packard
3000
1000
Subtotals
4
6
10
4
15
19
3.8
a.3
3.5
a
3
6
1
2
3
0
1
1
0
0
0
3.8
3.5
3.6
3
3
6
1
3
4
0
0
0
0
0
0
3.5
3.3
3.4
2
2
4
2
6
0
0
0
0
0
0
4.0
3.3
3.6
4
3
7
0
2
2
0
4
1
0
0
0
Honeywell
Datanet 6661
355
6000
Level 6
Other Datanets
Others 8< unspecified
Subtotals
3
4
4
3
13
7
34
16
20
18
24
43
364
485
3.7
2.8
3.3
3.3
3.1
3.0
3.1
2
1
1
1
1
1
7
1
2
3
2
12
5
25
0
0
0
0
0
1
1
0
1
0
0
0
0
1
3.3
2.3
3.0
3.3
2.8
2.7
2.9
1
0
1
1
1
1
5
2
2
2
2
9
4
21
0
1
1
0
3
1
6
0
1
0
0
0
1
2
3.3
2.3
3.3
3.3
2.. 9
2.7
2.9
1
0
1
1
2
1
6
2
2
3
2
8
3
20
0
1
0
0
3
3
7
0
1
0
0
0
0
1
3.7
2.8
3.3
3.3
2.9
2.4
2.9
2
1
1
1
1
0
6
1
2
3
2
10
3
21
0
0
0
0
2
4
6
1
0
0
0
0
1
IBM
3705
3704
Series/l
8100
S/34
Others & unspecified
Subtotals
199
30
7
3
3
5
247
577
35
14
8
3
21
658
3.4 93
99
3.1
6
22
3.3
3
3
3.7
1
2
0
2
2.7
3
3.4
2
3.4 106 130
6
2
1
0
1
0
10
1
0
0
0
0
0
1
3.0
2.7
2.7
3.7
3.3
3.5
3.0
39 118
17
2
1
4
2
1
1
2
2
2
47 144
31
9
1
0
0
0
41
3
1
1
0
0
0
5
3.1
2.9
3.1
3.0
2.3
3.3
3.1
43 132
6
16
2
3
0
3
0
2
1
3
53 158
22
6
2
0
0
0
30
2
2
0
0
1
0
5
3.6 122
3.2
9
3.9
6
1
3.3
1
3.0
3.5
2
3.5 141
70
19
1
2
1
2
95
7
2
0
0
1
0
10
0
0
0
0
0
0
0
20
40
3.3
8
10
2
0
3.1
6
8
5
0
3.2
6
12
2
0
3.4
9
10
1
0
Modcomp. all models
5
94
3.2
1
4
0
0
2.6
0
3
2
0
3.2
1
4
0
0
3.2
2
2
1
0
NCR
Comten 3650
Comten 3670
Comten 3690
621 and 721
Others & unspecified
Subototals
15
9
24
3
11
62
27
22
94
7
24
174
3.3
3.0
3.3
3.0
2.9
3.2
6
1
7
0
1
15
8
7
16
3
9
43
1
1
1
0
0
3
0
0
0
0
1
1
2.9
2.9
3.0
2.7
2.8
2.9
5
1
6
0
2
14
4
5
11
2
7
29
.5
2
6
0
14
1
0
0
0
2
3
3.5
3.2
3.5
3.3
3.0
3.3
7
2
11
1
2
23
8
7
13
2
{)
36
0
0
0
0
2
2
0
0
0
0
0
0
3.4
3.4
3.2
2.7
2.9
3.2
8
4
6
0
3
21
6
5
16
2
5
34
0
0
2
1
2
1
0
0
0
1
0
2.6
3
0
Memorex 1270
,
1.
Q
5 2
Paradyne, all models
5
258
3.2
2
2
1
1
1
3.4
2
3
0
0
3.4
2
3
0
0
Periphonics TComm
4
11
3.0
0
4
0
0
2.3
0
2
1
1
3.3
1
3
0
0
3.5
2
2
0
0
11
10
21
254
13
267
a.l
2.7
2.9
2
1
3
8
7
15
1
0
1
0
2
2
2.7
2.3
2.5
0
9
3
12
1
4
5
1
2
3
2.7
2.4
2.6
2
1
3
4
5
9
5
1
6
0
3
3
3.1
2.9
3.0
2
2
4
8
1
1
Q
14
1
1
2
6
17
3.2
1
5
0
0
3.3
2
4
0
0
3.0
1
4
1
0
3.2
1
5
0
0
41
233
3.1
11
24
6
0
2.9
8
23
9
1
3.0
5
30
6
0
3.1
10
25
6
0
553
3270
3..3 198 313
36
5
3.0 114 297 105
18
3.1
137 326
75
9
3.3 241
260 44
4
Sperry Univac
V7x
Others 8< unspecified
Subtotals
Tandem, all models
All others
Grand Totals
6
1
1
'User ratings report the number of users responding Excellent (E), Good (G), Fair (F), and Poor (P)for each category. The weighted averages 'YVA) were calculated by
weighing the four ratings on a 4, 3, 2, 1 basis. The weighted average is considered invalid if fewer than three responses are received.
© 1982 DATAPRO RESEARCH C;ORPORATION, DELRAN, NJ 08075 USA
REPRODUCTIOI'II PROHIBITED
JUNE 1982
C13-010-109
Communications ProcessorsManagement Perspective and
Equipment Specifications
f
Processors
TABLE 1, USERS' RATINGS OF COMMUNICATIONS PROCESSORS (Continued)
User Ratings'
Communication
Processor Manufacturer
and Model
Quality of
Manufacturer's
Maintenance
Promptness of
Manufacturer's
Maintenance
I
WA
I
E
rF I
G
P
I
WA
I
E
I
G
Manufacturer's
Software
I
F
P
IE I
WA
I
G
Manufacturer's
Technical Support
I
F
I
WA
P
I
E
I
G
IP
F
Action/Honeywell, al.1 models
3.0
0
3
0
0
3.0
0
3
0
0
3.3
1
2
0
0
3.0
1
1
1
0
Amdahl 4705
3.8
4
1
0
0
3.8
4
1
0
0
"
0
1
1
0
3,2
2
2
1
0
Burroughs
SRI, all models
DCP
B874
Others & unspecified
Subtotals
2.3
3.0
2.8
2.9
2.9
1
2
1
4
8
0
4
3
6
13
1
2
0
1
4
1
0
1
2
4
2,7
2.6
3,0
2.9
2.8
1
1
1
2
5
1
4
3
7
15
0
2
1
4
7
1
1
0
0
2
3.0
3.4
3.0
3.4
3.3
1
4
2
7
14
1
3
1
4
9
1
1
2
2
6
0
0
0
0
0
2.7
1.8
2,6
2.6
2.4
1
0
0
2
3
1
1
4
6
12
0
4
0
3
7
1
3
1
2
7
CCI, all models
2.6
0
3
2
0
2,8
0
4
1
0
3.2
2
2
1
0
2.6
1
2
1
1
Control Data, all models
3.4
2
3
0
0
3.4
2
3
0
0
2.6
1
2
1
1
2.8
2
1
1
1
Codex 6000
Data General, all models
3,1
4
3
3
0
3.3
4
5
1
0
3.1
5
1
4
0
3.1
2
7
1
0
,
0
1
0
1
,
0
1
0
1.
2.3
0
1
3
0
1.6
0
1
1
3
1
1.5
0
0
2
2
2.6
0
3
2
0
2.0
1
0
2
2
2.8
2.3
2.8
3.0
2,8
0
0
2
1
3
3
1
1
6
11
1
2
1
1
5
0
0
1
0
1
2.7
2.4
2,6
2.6
0
0
1
2
3
2
1
2
3
8
1
1
0
1
3
0
0
2
2
4
2,7
2.0
2,2
2.4
2,3
0
0
0
0
0
2
1
1
4
8
1
0
4
3
8
0
1
0
1
2
0
2
3
0
2,5
0
2
2
0
2.4
0
2
3
0
0
3.0
0
3
0
0
3.0
1
1
1
0
DCA. all models
1.8
0
0
'"
4
DEC
PDP 11/34
PDP 11/40
PDP 11170
Others & unspecified
Subtotals
2.8
2,0
3.0
3.0
2.8
0
0
2
0
2
3
1
1
8
13
1
1
2
0
4
0
1
0
0
1
GTE Telenet, all models
2.4
0
2
3
0
2.4
2
0
1
,
3.3
2
0
1
0
3,3
3.8
3.0
3,3
3
2
5
1
3
4
0
0
0
0
1
1
4,0
3.2
3.5
4
2
6
0
3
3
0
1
1
0
0
0
3,8
3.0
3.3
3
2
5
1
2
3
0
2
2
0
0
0
3,5
2,7
3.0
2
1
3
2
3
5
0
1
1
0
1
1
Data net 6661
355
6000
Level 6
Other Datanets
Other & unspecified
Subtotals
3.7
2.8
3.0
3.3
2.9.
2.4
2.9
2
1
1
0
0
1
0
2
1
4
0
1
0
0
0
2
3
3.7
2.5
3.0
2.3
3.1
3.0
3.0
2
0
1
0
1
1
5
1
3
2
1
12
5
24
0
0
1
2
0
1
4
0
1
0
0
0
0
1
3.0
2.5
3.0
2.5
2.4
2.6
0
0
1
0
1
0
2
3
3
2
0
5
3
16
0
0
1
2
7
1
11
0
1
0
0
0
1
2
3.3
2.5
2.8
0
1
6
1
2
2
2
11
3
21
2.6
1.. 8
2.4
1
1
1
0
1
0
4
2
1
1
1
6
1
12
0
1
2
1
3 3
10
0
1
0
0
3
2
6
IBM
3705
3704
Series/l
8100
S/34
Others & unspecifi ed
Subtotals
3.4
3.2
3.3
4.0
3.0
3.6
3.4
92
11
4
3
1
3
114
95
14
1
0
1
2
113
12
4
2
0
1
0
19
0
1
0
0
0
0
1
3.4
3.1
3.4
3.3
2.7
3.8
3.3
84
10
3
1
1
4
103
99
14
4
2
0
1
120
15
5
0
0
2
0
22
0
1
0
0
0
0
1
2.9
2.6
1.5
2.7
3.0
3.2
2.9
36
3
0
0
1
3
43
119
12
0
2
1
0
134
37
12
3
1
1
2
56
6
2
3
0
,0
0
11
3.0
2.6
2.0
3.3
2.3
4.0
2.9
45
2
0
2
0
5
54
108
18
1
0
1
0
128
41
7
5
1
2
0
56
4
3
1
0
0
0
8
Memorex 1270
3.1
7
8
4
1
3.0
6
8
6
0
**
0
5
0
0
2.9
2
13
4
0
0
0
1
0
,
0
0
0
0
1.7
0
1
0
2
~
1
0
0
0
4
6
4
15
3
5
33
3
3
0
3
17
3
1
1
0
2
7
Harris, all models
Hewlett-Packard
3000
1000
Subtotals
Ho~eywell
t
,
,
,
0
0
1
0
,
NCR
Comten 3650
Comten 3670
Comten 3690
621 and 721
Others & unspecified
Subtotals
3.1
2.9
3.0
3.0
2.7
3.0
5
1
3
1
2
12
7
6
18
1
6
38
3
2
3
1
1
10
0
0
0
0
2
2
3.1
2.8
2.9
3.0
2.6
2.9
5
1
2
0
2
10
7
6
17
3
5
38
3
1
5
0
2
11
0
1
0
0
2
3
2.9
2.8
2.9
3.0
2.6
2.8
3
0
1
0
1
5
6
8
20
3
5
42
5
0
2
0
3
10
0
1
1
0
1
3
2.6
2.6
2.6
3.0
2.3
2.6
Paradyne, all models
2.2
1
1
1
2
2.8
1
2
2
0
3.0
1
3
1
0
3.0
2
1
2
0
Periphonics TComm
2.8
0
3
1
0
2.5
0
2
2
0
3.0
1
2
1
0
2.5
0
2
2
0
Sperry Univac
V7x
Others & unspecified
Subtotals
3.2
3.2
3.2
3
4
7
1
5
6
0
0
0
1
1
2
3.2
2.7
2.9
3
2
5
1
4
5
0
3
3
1
1
2
2.8
1.9
2.1
1
0
1
2
3
5
0
3
3
1
4
5
2.6
1.9
2.1
0
0
0
4
3
7
0
3
3
1
4
5
Modcomp, all models
8
Tandem, al.1 models
2.8
0
5
1
0
3.0
0
6
0
0
3.2
1
4
0
0
3.2
1
4
0
0
All others
2.7
6
17
14
2
2.7
7
14
13
3
2.7
6
16
14
2
2.5
5
16
11
6
Grand Totals
3.1
180
258
76
21
3.1
163
267
85
16
2.8
91
264
120
29
2.7
88
259
133
51
'User ratings report the number of users res~onding Ex~ellent (E), Good (G~ Fair (F), ~nd Poor (P) for each category. The weighted averages IYVA) were calculated by
\l\l8lghlng the four ratIngs on a 4, 3, 2, 1 baSIS. The \l\l8lghted average IS conSIdered invalid If fewer than three responses are received.
,
"Memorell 1270 Manufacturer's Software responses were judged invalid because the unit is not programmable.
JUNE 1982
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRQDl)CT!ON PROHIBITED
C13-010-110
Communications ProcessorsManagement Perspective and
Equipment Specifications
Processors
t:> whenever
a vendor/model identity was omitted, USer
ratings were not assigned, a vested interest on the part of
the respondent was judged to exist, or incomprehensible or
unreasonable answers were given.
By the editorial cut-off of January 1, 1982, Datapro had
processed 631 valid forms, which were then shipped to
Mathematica Policy Research, Inc. for key entry and
tabulation by computer. Summary information was
prepared in the form of totals, percentages, or weighted
averages, as appropriate for each question. Weighted
averages were computed in a manner similar to most
college grading systems: "Excellent" is weighted as 4,
"Good" as 3, "Fair" as 2, and "Poor" as l. The tallied
numbers for each value were then multiplied by the
corresponding weight, and the average taken by dividing
the sum of the products by the total number of responses
for that category.
Datapro suggests that the reader use the information
presented with discretion. The individual equipment
ratings are not presented to readers as the major
consideration in making an acquisition decision. Rather,
the ratings and other information should be used as guides
to potential strengths and weaknesses that may call for
further investigation in selecting the most suitable
equipment for your needs.
The Results
The first part of the Network Survey consisted of ten
questions that solicited information of the general
characteristics ofthe users' networks. Taken together, the
results provide a brief summary of the extent and
complexity of these users' network configurations.
First, users were asked to indicate the number of sites that
are linked by their networks, with the following results:
1 to 3 sites
4 to 10 sites
11 to 25 sites
26 to 50 sites
Over 50 sites
Number of
Responses
Percent of
Responses
139
156
93
23
25
15
12
25
100
77
154
619
These results present a fairly even spread of network sizes,
with approximately half the users in the I-to-l0 site range,
and the other half in the lO-and-over range. Note that no
distinction is made here as to the type or intelligence of the
devices located at any site.
The second question asked the number of computers
participating as hosts. As you can see, nearly 60 percent of
these users are operating in multiple-host environments:
1 host
2 to 4 hosts
5 to 10 hosts
Over 10 hosts
Number of
Responses
Percent of
Responses.
245
274
46
35
600
41
45
8
6
100
This adds some degree of clarity to the responses to the
Question 1, as well as developing a better picture of the
level of sophistication of these users.
The users were also a'sked to indicate the number of enduser workstations (CRTs, teleprinters, etc.) that are in use
on their networks:
Number of
Percent of
Responses
Responses
1 to 10
11 to 25
26 to 100
101 to 500
Over 500
53
67
147
185
143
595
9
11
25
31
24
100
When examined in conjunction with Questions I and 2,
these results characterize the typical (median) respondent
to the survey as having a network configuration consisting
of approximately 10 to 20 sites, two or three hosts, and
between 100 and 200 terminals (an average of 10 per site).
The users were requested to identify which vendors'
systems are functioning as hosts. The following list
summarizes their responses:
IBM
DEC
Burroughs
Amdahl
Honeywell
Univac
Control Data
National Advanced
Systems
NCR
Magnuson
Other
Number of
Responses
Percent of
Responses
399
93
57
55
54
35
24
19
63
15
9
9
9
6
4
3
18
5
102
3
I
16
As expected, IBM came out well ahead of all other
vendors; however, DEC placed second with a surprisingly
strong showing. Thirty-eight percent of the users are using
more than one vendors' systems as hosts, indicating that
the multiple-host environments represented in Question 2
are frequently multiple-vendor environments as well.
The same users were asked to identify which communications processor equipment they are using, with the
following results: .
.1:>
© 1982 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
JUNE 1982
(
(
"'-...
'
C13-010-111
Communications ProcessorsManagement Perspective and
Equipment Specifications
(
I>
IBM
NCR
Honeywell
Burroughs
Sperry Univac
DEC
Memorex
Other
Number of
Responses
Percent of
Responses
247
62
34
29
21
20
20
120
47
11
6
5
4
4
4
22
Processors
more than one of the listed architectures in their networks.
The percent of users complying with IBM's SNA is
somewhat higher than we had expected, indicating that the
acceptance of that architecture is becoming more
widespread, despite strong objections by some portions of
the user community. However, the fact remains that about
one-fourth of the respondents are not complying with any
vendor-supported architectural scheme, either because
their environments do not currently require it (but
potentially may in the future) or because they have found
other satisfactory alternatives.
Apparently, at least 16 percent of all IBM mainframe users
surveyed rely on non-IBM communications processor
equipment. This may indicate that the IBM 3705 has
reached its maturity. IBM customers are looking
elsewhere for increased functions.
Moreover, we assume that at least some of the "other
vendor-supported architectures" respondents are IBM
users operating in a pre-SNA, all-BSC environment, and
should actually have been counted in the "none or userdeveloped architecture" tally, further increasing the
number of users in this category.
Communication processor users wt'jre then asked to
specify what primary functions their equipment performed:
The users were also asked to indicate the primary
protocols supported by their networks:
Front-end processor
Terminal controllers
Remote line
concentrators
Message switching
processors
Stand-alone network
processors
Distributed processing
node
Other
Number of
Responses
Percent of
Responses
343
137
68
54
22
11
45
7
44
7
38
6
8
The total percent of responses is more than 100 because
some users listed more than one primary function. These
figures reflect the increased versatility communications
processors now provide.
Bisynchronous (including
IBM BSC)
Asynchronous
IBM SDLC
X.25 packet level
ADCCP HDLC (including
Univac UDLC and
Burroughs BDLC)
Other
Number of
Responses
Percent of
Responses
428
68
377
203
40
33
60
32
6
5
75
12
Eighty-three percent of these users responded that they are
using more than one protocol in their network, with
ASCII and bisynchronous the front-runners. The use of
the IBM SDLC protocol by 32 percent of these users
correlates with the 36 percent figure represented for IBM 1>
Another question asked the users to identify the overall
network architecture with which their networks comply,
with the following results:
(
IBM SNA
Digital DNA or DECnet
Burroughs BNA
Hewlett-Packard DSN
Honeywell DSE or DSA
Univac DCA
Other vendor-supported
architecture
None or user-developed
architecture
Number of
Responses
Percent of
Responses
224
26
19
16
14
12
182
36
4
3
3
2
2
29
160
25
The number of responses totals 653, indicating that 22, or
approximately four percent, of the respondents are using
JUNE 1982
The IBM 3705, shown above, has the largest installed base of
any front-end processor, but is rapidly maturing. IBM is
expected to announce a replacement unit in 1982.
© 1982 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-112
Communications ProcessorsManagement Perspective and
Equipment Specifications
Processors
t> SNAcompliailce in the preceding question, but the high
response for multiple protocol usage suggests that n'lany"of
these users are still in various stages of migration to SNA.
Another question requested that the users indicate any
commercial local networks which they operate. Only 14
percent ofthe users answered this question. A summary of
these 81 responses is shown below:
ARC (Datapoint)
Ethernet
H yperchannel
Other
Number of
Responses
Percent of
Responses
20
5
2
54
25
6
3
66
Datapoint's Attached Resource Computer (ARC)
network is well-established, with a total installed base of
over 2,000 users. Local area networking is being strongly
promoted by the industry, and new vendors are entering
that market at a significant rate. We expect user
acceptance of the local area network concept to be
reflected in future editions of this survey.
problems,and asked the users to rank, in order of severity,
any of these areas that they had experienced as problems in
operating their networks. The users assigned a rank of 1 to
the item representing the most severe problem,and 2 to the
next most severe,etc. Any item that had not been a
problem to the user was left blank.
In order to show the information collected in the most
meaningful way, we summarized the rankings on an
indexed scale that weighted the rankings from 10 to 100,
with 100 being the most severe problem. The rankings for
each individual problem listed were tallied and assigned a
weight: 100 was assigned to the responses tallied as the
most severe problem (i.e., ranked by the users as "1 ,,),a
weight of 90 to those tallied as the next most severe,etc.
The tallies of the blank answers were assigned a weight of
10. We then computed a weighted average for each
problem by mUltiplying the weight times the number of
tallied responses for each ranking, and then dividing the
sum of the products by the total number of responses for
that problem.
The results are shown below:
The final question in the first part of the questionnaire
provided a list of nine possible sources of networking
Weighted Average*
Non-local communications lines
Terminals
Host software
Modems
Local loops
Host hardware
Front-end software
Front-end hardware
Multiplexers
65.4
53.5
48.6
48.3
47.8
33.8
33.0
28.7
22.0
*Based on a scale of 10 to 100, where 100 equals "Most
severe problem" and 10 equals "No problem."
Not unexpectedly, the area of these users' networks t h a t ' i
causes the most headaches is their communications lines.
The least frequently experienced sources of problems are
reportedly the high-end data communications
equipment-front-end processors and multiplexers.
Perhaps because the level of sophistication and the pricetag of these systems requires it, vendors are apparently
spending more time on quality control and customer
support on this tytJe of equipment than the others, which
may account for the resulting low numbers of problems
reported.
Staving off the trend of attrition that has plagued independent
front-end processor vendors, eCI has solved its financial
difficulties with the help of CompuDyne. Its plan of
reorganization should guarantee the continued production of
the top of the lineCCl85,shown above, and other CClproduct
family members.
It is also significant to note that only 69 of the 631
respondents, orI I percent, chose not to answer this
question. Although we have no way of knowing whether
these users are indeed experiencing no problems,or
whatever they simply skipped the question, the fact that so
few fell into this category gives pretty good indication that
encountering problems in operating networks is the
status quo, and that very few users are fortunate enough to
have none.
I:>
©1982 DAiAPAO RESEARCH CORPORATION, DELRAN. NJ08075 USA
AEPRODUCTtONPROHIBITED
·JUNEl982
(
"'..
Communications ProcessorsManagement Perspective and
Equipment Specifications
1:> The remammg parts of the questionnaire focused on
specific categories of data communications devices and
'services. Users were asked to list the specific vendors and
types of equipment/ services they are using in their
networks, and to provide user ratings based on their
experiences with each. The Communications/ Network
Processor section of the questionnaire asked the user to
provide the manufacturers and model numbers, of each
communications processor system in use, the number of
systems installed, and ratings on eight specific categories of
user experience: overall satisfaction, ease of installation,
throughput, hardware reliability, promptness of
manufacturer's maintenance, quality of manufacturer's
maintenance, manufacturer's software, and manufacturer's technical support. A summary of the results of
these questions is shown in Table I.
The Datapro Research staff extends a sincere thanks to all
for responding so enthusiastically to our 1982 Network
Users Survey. Without your participation, it could not
have been the terrific success it is, and we hope that this
compendium of user experience will be of significant value
to you. We look forward to hearing from you again.
Comparison Charts
The key functional characteristics of some 71 commercially available communications processors representing
39 manufacturers are presented in the accompanying
comparison charts. Most of the information in the charts
was supplied by the vendors during April 1982. The
Datapro Research staff greatly appreciates their
cooperation in the preparation of this survey.
All of the comparison chart entries are explained in the
following paragraphs along with discussions of their
significance to prospective buyers of communications
processors.
Computer Systems Interfaced
The manufacturers and models listed show all computers
which may be interfaced by the communications processor
product shown. In the case of a front-end processor that
interfaces with IBM mainframes, we generally list only
current IBM computers, although the unit may also
support a System/360 or other older systems. The word
"compatibles" references IBM plug-compatible mainframe vendors. These vendors include Amdahl,
Magnuson, NAS, Control Data, and others. Some
vendors make custom interfaces while others use industrystandard connections. Both will be mentioned when
applicable.
C13·010·113
Processors
communications processors, in terms of both frequency of
use and level of complexity, is front-end processing.
The communications processor may replace a hard-wired
communications controller as the interface between the
central data processing system and the data communications network. The IBM 270X family and Memorex
1270 are examples of hard-wired controllers. (The
Memorex 1270, unlike the IBM 270X, remains in active
production; although this product is not a communications processor by our definition, we have included it in
these charts due to its immense popularity in and influence
on the current communications processor market).
The concept of front-end processing essentially involves
off-loading or removing the data communications control
function from the central processing unit and setting it up
as an external, largely self-contained system. The frontend processor not only receives and transmits all data
passing through the network, but also, and significantly,
can be programmed to pre- and post-process this data in a
variety of ways in order to relieve the system's central
processing unit from time-consuming overhead activities
related to message formatting and control. This
decentralized approach to the distribution of processing
labor permits both the communications and central
processors to perform their primary functions in parallel
and with little interference. Data is. passed between the
processors only when necessary and with as high a degree
of efficiency as is possible in circuit design.
A front-end processor is by definition directly channelattached to the host it is serving. This distinguishes the'
front-end processor from a processor which helps to
perform similar off-loading responsibilities from a more
remote location.
Some front-end processors may be directly channelattached to more than one host. The maximum number of
hosts channel-attachable to the front-end specifies the
number of physical connections that may exist, and the
maximum number of active hosts supported simultaneously represents the number of concurrent logical
connections that a front-end is able to support. Some
front-end processors that permit two or more direct channel-attachments allow only one channel to be active at a
time; the other channel(s) act only as a back-up in emergency situations, or more frequently, during maintenance
operations. Other front-end processors can maintain
multiple active channel connections, either to one, or to
more than one, host, so that multiple host applications or
systems, each accessed by a dedicated channel, may be
serviced simultaneously.
Functional Configurations
(
A front-end processor is a computer which has been
programmed either by software or firmware for the
purpose of handling communications activity between a
host and its network. The front-end processor allows the
host to devote more valuable machine cycles to other
applications. The most significant application of
JUNE 1982
Many front-end processors feature the ability to provide
emulation of IBM's communications systems. This allows
the user to replace an aging IBM 270X communications
controller or 370X communications processor with a more
modem system, without requiring the user to rewrite
software which was developed long ago on the older
device.
t:>
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-114
Processors
Communications ProcessorsManagement Perspective and
Equipment Specifications
I:> A remote line concentrator is found at a remote location,
and compresses several communications lines into a single
high-speed line for transmission to the host. It differs
slightly from the multiplex/ demultiplex process by being
more software intensive and providing software
compatibility with host(s) it is serving. The maximum
number of hosts served by one concentrator refers to the
number of hosts that the communications processor can
support concurrently in this remote configuration.
A host-independent network processor may reside
anywhere in the network and typically performs a wide
range of networking duties. Its function in the network is
transparent to end-user devices, and thus it provides no
software compatibility with any host. It may perform
concentration, protocol conversion, and switching
functions and, unlike a front-end processor or remote
concentrator, generally makes no distinction between
connections to terminals and connections to computer
ports.
A store-and-forward message switching processor is similar
to a network processor because it, too, is usually hostindependent. Unlike the network processor, however, it
performs no data manipUlations. It simply receives strings
of numerics and/ or characters (messages), deciphers the
address for whom the message is intended, and relays the
unopened message to its destination point. It can also hold
the message on a storage unit, such as disk or magnetic
tape, for later delivery at a predetermined specified time or
upon demand. Frequently, message switching functions
are integrated into a more sophisticated system, which
may operate in other applications besides message
switching, and in fact, processors designed to provide only
message switching of voice-grade lines were deemed not to
meet the criteria for inclusion in this report.
A computer may be described as a distributing processing
node when it not only performs communications
.processing functions but also has the ability to process offline end-user applications (i.e., accounts receivable,
payroll, etc.). It is usually located at a site remote from the
host, and supports its own terminals, which can access
local or host applications.
Many general-purpose minicomputers have refined this
capability to an art form, combining intimate network
involvement with attention to locally-initiated processes.
Since the thrust of this report deals strictly with dedicated
communications processor products, we do not focus
great attention on general-purpose minicomputers that
may be configured with communications processing
applications. For a more expansive view of minicomputers
that may operate this type of environment, please see our
report C 13-0 10-20 1 entitled "Communications Capabilities of Minicomputers and Small Business Computers"
in Datapro Reports on Data Communications.
Many remote communications processors, because they
are capable of supporting a network of terminals, can act
as terminal controllers. By performing concentration and
pre-processing tasks for transmission into the network,
they act as a door through which the terminals they
support may access the network. Note again that the role
of terminal controller is generally one of several that may
be played by a communications processor; for information
on dedicated terminal controller products, we refer you to
Sections C21 and C25 of Datapro Reports on Data
Communications.
Most mainframe computer and minicomputer vendors
have a definite approach by which their entire product line,
from small to large systems, may be interconnected for
communications. This network architecture is actually a
philosophy that the vendor feels optimizes resources
within a network. IBM's System Network Architecture
(SNA) and Digital Equipment's DECnet represent two
network architectures with approaches designed to meet
the needs of their customers and installed base. Depending
upon the types of products the computer vendor offers, the
network architecture may be very simple, and easy for
independent vendors to comply with, or highly structured,
and very difficult to comply with. As we enter the mid1980s, issues of standardization are hot, and the ability to
comply with a computer vendor's network discipline may
prove to be the great success or complete downfall of many
companies providing communications processor
products.
Most processors have a physical limit to the number of
lines that they may support. However, the practical limits
of communications line capacity usually varies depending
upon line speed. Whether a line is operating at full- or halfduplex also has an effect on line capacity. For this reason,
properly depicting communications line capacity is the
most difficult and the most controversial entry in the
accompanying charts. It would be very easy to utilize a full
page to describe the line capacity capabilities of just one
processor. As a reasonable alternative, Datapro decided to
show the number of half-duplex lines that can be
physically attached to the processor presuming all lines
were operating within a given speed range. Three ranges
were chosen to represent low, medium, and high line
speeds. The ranges chosen were: up to 1800 bps, 2000 to
9600 bps, and over 9600 bps. The number of low-speed
lines usually represents the physical and throughput
limitation for asynchronous lines. Generally, the mediumand high-speed lines represent the outer limits of the
throughput capabilities. On some systems, using fullduplex lines halves the line capacity, since two channels are
required per line, and whether this effect occurs is also.
indicated.
Communications Features/Functions
One of the features of a communications processor is
support of a variety of terminals throughout the network.
The more terminal protocols supported, the more versatile
the processor may be in providing network compatibility.
Among the more common protocols supported are
ASCII, IBM's BSC and SDLC, ANSI's ADCCP, ISO's
HDLC, Burrough's BDLC, and Sperry Univac's UDLC.
See Table 2 for a complete list of terminal protocols
supported.
I:>
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
JUNE 1982
/(
-."
C13-010-115
Processors
Communications ProcessorsManagement Perspective and
Equipment Specifications
(
TABLE 2. TERMINAL PROTOCOLS SUPPORTED
..ASCII/
async./
IBM BSC
IBM
SOLC
Other
BitOriented
Protocols*
X.25
Packet
Level
Action/Honeywell
Mercury Message Mgmt. Sys.
Yes
Yes
Yes
No
No
8Al. 83B3. 85A. SITA. ARINC.
TWX. TELEX
Amdahl 4705
Yes
Yes
Yes
No
Yes
-
Amdahl Comm. Systems Div.
3400 Series
4410 Network Processor
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes (HDLC)
Yes
Yes
IBM 2741
-
Amnet Nucleus 6000
Yes
Yes
Yes
Yes
Yes
X.75. other PADs
Auscom 8911
Yes
Yes
Yes
Yes
Yes
RPO
BBN Computer
C-80
C/60
Yes
Yes
No
No
No
No
No
No
No
No
-
Braegen B40
No
Yes
Yes
No
No
-
Burroughs Corp.
CP9558-1/CP9572
CP3680/CP3680-01
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Most Burroughs protocols
Most Burroughs protocols
Cableshare
LSI-X.25 Front-End
No
No
No
No
Manufacturer/
Product Name
nv
LSI-x'25 Int. Concent.
LSI-X.25 Host Port
Concentrator
I
II
I
I
No
No
Centennial Computer
Corp. 2000/3000
Yes
Yes
No
No
Yes
Century Analysis OSI
Yes
Yes
No
No
No
Chi Comm. Processors
Yes
Yes
No
Yes (HDLC)
Telenet
Yes
Yes
No
No
No
II
I
Yes
Yes
Yes
Yes
Future
No
Yes (HOLC)
No
Computer Communications
CC-6
CC-8
CC-80/85
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Control Data
2551-1 & 2551-2
Yes
Yes
RPO
Yes
Yes
Yes
Yes
Yes
No
Yes
GTE Telenet
TP4000 Series
TP2201/TP2202
Honeywell Datanet 8
Datastream
T5
T7
T8
DCA 355
(
I
Yes
No
I
Uniscope 100. 200. & 1004
Rem 1. NTR. Uniscope 100 &
200
Telex. & IBM 2741. 2848.
2260
Various pas & custom protocols
-
No
Telex
Telenet. Tymnet Telex. 83B3
Telenet. Tymnet Telex. 83B3. PARS. SABRE.
ARINC
Yes
Telenet. Tymnet. Datapac. Transpac
No
No
Yes
No
No
Future
No
No
Future
-
No
No
Yes
Telenet
DDCMP-trunk only
Yes
Yes
Yes
No
No
No
Yes
No
Telenet
Telenet
Yes
Yes
No
Yes (HDLC)
I
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
-
Telenet. Tymnet VIP. PVE. RCI. LHDLC
+ 10 DDNs
*Other bit-oriented protocols include ADCCP. HDLC. BDLC. and UDLC.
NOVEMBER 1982
-
I
No
No
Commex
DNP4/6/16
CMC4 & CMC 32
,
Telenet. Tymnet. Uninet. Datapac. Infoswitch.
Euronet
PSS. Transpac. Data net.
Telepac. DATEX
Yes
Same as above
Yes
,Same as above
No
No
Codex 6520
No
No
I
I
Other Protocols Supported
!
C13-010-116
Communications ProcessorsManagement Perspective and
Equipment Specifications
Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED (Continued)
Manufacturerl
Product Name
ASCIII
async./
IBM BSC
IBM
SOLC
Other
BitOriented
Protocol *
X.25
Packet
Level
TTY
Other Protocols Supported
IBM
3705-11 (E1 thru L4)
3705-80
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Telenet
Telenet
ICCI
CA20 BSC
CA20SNA
Yes
Yes
Yes
No
No
Yes
No
No
No
No
ICOT
25X(253, 254, 257)
251
Yes
Yes
Yes
No
Yes
No
No
No
Yes
No
Yes
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
No
RPO
No
Yes
RPQ
MIA-Com DCC
CP9000 & MicroNode
No
No
No
No
No
Memorex
1270
Yes
Yes
No
Via VAN
Modcomp 3108 & 3109
Yes
Yes
Yes
Yes
Yes
NCR Comten
3650 & 3670
3690 (A5-E5, T3/U1)
721-11
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
83B3
83B3
rCR BSC & in-house DLC
North American Philips
MARC
Yes
No
Yes
Yes (HDLC)
Yes
(383, Telex, & Cidin
Paradyne
Pix/Pixnet
Yes
RPO
No
No
No
Periphonics T-Comm 80
Yes
Yes
Yes
Raytheon
Raynet I, II, III, & IV
Yes
Yes
Yes
Yes
No
Sperry-Univac
DCP/40 & DCP120
Yes
Yes
No
Yes
Scheduled
certif. start,
3rd qtr. 1982
Slarnet Data System, Protex
Ind. Starnet II
Yes
No
No
No
No
Tandem Non-Stop "
Yes
Yes
Yes
Yes
Yes
Telefile EECP-X
Yes
Yes
No
No
No
Thomas Engineering
MZ-80
8770120
Yes
Yes
Yes
Yes
Late 1982
No
No
No
No
No
TRT Data Products, Norfield
Comm.
System 300
System 400
System 500
Yes
Yes
Yes
No
Yes
Yes
No
No
Yes
No
No
Yes
No
No
Yes
Westinghouse Canada
W1655 ICC
Yes
No
No
No
No
352
35X
Lemcom Systems
CMC-4, CMC-8, & CMC-32
Distributed Network
Processor Series
I
No
PARS. SITA, PI024, U400
Tymnet, Telenet, Uninet, PDNs
No
I
I :
U";~U400
RPQ
Telenet, Datapac, Sabre, Swift, SITA
PSS, Tymnet,
~ranspac,DATEX-F
Paradyne SDLC
Voice response
PARS, Univac
REM1, NTR
Swift, Burroughs
Honeywell VIP
Honeywell VIP
1=
I1~100,
pARS, Reservec II, Univac
P1024
'Other bit-oriented protocols include ADCCP. HDLC, BDLC, and UDLC.
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
NOVEMBER 1982
C13-010-115
Communications ProcessorsManagement Perspective and
Equipment Specifications
Processors
_.
(
TABLE 2. TERMINAL PROTOCOLS SUPPORTED
ManufacturerI
Product Name
ASCIII
async.l
IBM BSC
IBM
SOLC
Other
BitOriented
Protocols*
X.25
Packet
Level
TTY
Other Protocols Supported
Action/Honeywell
Mercury Message Mgmt. Sys.
Yes
Yes
Yes
No
No
8Al. 83B3. 85A. SITA. ARINC,
TWX, TELEX
Amdahl 4705
Yes
Yes
Yes
No
Yes
-
Amdahl Comm. Systems Div.
3400 Series
4410 Network Prooessor
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes (HDLC)
Yes
Yes
-
Amnet Nucleus 6000
Yes
Yes
Yes
Yes
Yes
X.75, other PADs
Auscom 8911
Yes
Yes
Yes
Yes
Yes
RPO
BBN Computer
C-80
C/60
Yes
Yes
No
No
No
No
No
No
No
No
-
Braegen B40
No
Yes
Yes
No
No
-
Burroughs Corp.
CP9558-1/CP9572
CP3680/CP3680-01
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Most Burroughs protocols
Most Burroughs protocols
Cableshare
LSI-X.25 Front-End
No
No
No
No
No
No
No
No
No
No
No
No
Centennial Computer
Corp. 2000/3000
Yes
Yes
No
No
Yes
Uniscope 100, 200, & 1004
Century Analysis OSI
Yes
Yes
No
No
No
-
Chi Comm. Processors
Yes
Yes
No
Yes (HDLe)
Telenet
Codex 6520
Yes
Yes
No
No
No
Commex
DNP4/6/16
CMC4
Yes
No
Yes
No
Future
No
Yes (HDLC)
RPQ
Yes
RPO
Computer Communications
CC-6
CC-8
CC-80/85
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
Control Data
2551-1 & 2551-2
Yes
Yes
RPO
Yes
Telenet, Tymnet, Datapac, Transpa(
Datastream
T5
T7
T8
Yes
Yes
Yes
Yes
Yes
No
No
No
Yes
No
No
Future
No
No
Future
-
DCA 355
Yes
No
No
Yes
Telenet
DDCMP-trunk only
GTE Telenet
TP4000 Series
TP2201/TP2202
Yes
Yes
Yes
No
No
No
Yes
No
Telenet
Telenet
-
Honeywell Datanet 8
Yes
Yes
No
Yes (HDLe)
LSI-X,25 Int. Concent.
LSI-X.25 Host Port
Concentrator
-
Telenet, Tymnet, Uninet, Datapac, Infoswitch,
Euronet
PSS, Transpac, Data net,
Telepac, DATEX
Same as above
Yes
Same as above
Yes
,
Rem 1, NTR, Uniscope 100 &
200
Telex, & IBM 2741, 2848,
2260
Various POS & custom protocols
RPO
Telex
No
Telenel. Tymnet Telex, 83B3
Telenel. Tymnet Telex, 83B3, PARS, SABRE,
ARINC
-
-
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
;
-
Telenel. Tymnet VIP, PVE, RCI,
+ 10 DDNs
'Other bit-oriented protocols include ADCCP, HDLC, BDLC, and UDLC.
JUNE 1982
IBM 2741
LHDLC~
C13-010-116
Communications ProcessorsManagement Perspective and
Equipment Specifications
Processors
TABLE 2. TERMINAL PROTOCOLS SUPPORTED (Continued)
ASCII/
async./
TTY
IBM BSC
IBM
SOLC
Other
BitOriented
Protocol *
X.25
Packet
Level
Other Protocols Supported
IBM
3705-11 (E1 thru L4)
3705-80
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Telenet
Telenet
-
ICCI
CA20 BSC
CA20 SNA
Yes
Yes
Yes
No
No
Yes
No
No
No
No
-
ICOT
25X (253, 254, 257)
251
Yes
Yes
Yes
No
Yes
No
No
No
Yes
No
Yes
Yes
Yes
No
No
No
No
Tymnet, Telenet.
Uninet, PDNs
No
No
Yes
Yes
Yes
Yes
No
RPO
No
Yes
No
RPO
-
MIA-Com DCC
CP9000 & MicroNode
No
No
No
No
No
-
Memorex
1270
Yes
Yes
No
Via VAN
Modcomp 3108 & 3109
Yes
Yes
Yes
Yes
Yes
-
NCR Comten
3650 & 3670
3690 (A5-E5, T3/U1)
721-11
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
83B3
83B3
NCR BSC & in-house DLC
North American Philips
MARC
Yes
No
Yes
Yes (HDLC)
Yes
83B3, Telex, & Cidin
Paradyne
Pix/Pixnet
Yes
RPO
No
No
No
Paradyne SDLC
Periphonics T-Comm 80
Yes
Yes
Yes
-
-
Voice response
Raytheon
Raynet I, II, III, & IV
Yes
Yes
Yes
Yes
No
PARS, Univac
Sperry-Univac
DCP/40 & DCP120
Yes
Yes
No
Yes
Scheduled
certif. start,
3rd qtr. 1982
Starnet Data System, Protex
Ind. Starnet II
Yes
No
No
No
No
-
Tandem Non-Stop II
Yes
Yes
Yes
Yes
Yes
Swift, Burroughs
Telefile EECP-X
Yes
Yes
No
No
No
-
Yes
Yes
Yes
Yes
Late 1982
No
No
No
No
No
Honeywell VIP
Honeywell VIP
TRT Data Products, Norfield
Comm.
System 300
System 400
System 500
Yes
Yes
Yes
No
Yes
Yes
No
No
Yes
No
No
Yes
No
No
Yes
-
Westin9house Canada
W1655 ICC
Yes
No
No
No
No
Manufacturer /
Product Name
352
35X
Lemcom Systems
CMC-4, CMC-B, & CMC-32
Distributed Network
Processor Series
Thomas Engineering
MZ-80
8770120
PARS, SITA, P1024, U400
Univac U400
RPO
Telenet, Datapac, Sabre, Swift, SITA
PSS, Tymnet,
ITranspac,DATEX-P
~.
REM1, NTR
PARS, Reservec II, Univac
U100, P1024
'Other bit-oriented protocols include ADCCP, HDLC, BDLC, and UDLC.
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
JUNE 1982
Communications ProcessorsManagement Perspective and
Equipment Specifications
1:> The X.25 Packet-level protocol is now being supported by
many communications processor vendors in the U.S. The
support varies from a simple interface to a full "gateway"
function, which generally includes packet assembly and
disassembly, routing, and flow control for mUltiple
terminal devices. Although utilized in some private packetswitching network, the X.25 support is generally used to
gain access to public packet-switching networks, or ValueAdded Networks (V AN), such as Tymnet and Telenet.
Since the implementation of the X.25 protocol may vary,
each of the public carriers have established a certification
process by which a particular vendor's version of X.25 can
be guaranteed to be compatible with their network. In the
charts, you11 find a listing of those VANs on which the
vendor's X.25 package is certified (e.g., IBM X.25 certified
by GTE Telenet).
Other protocol possibilities allow the vendor to specify
what other support they provide. A frequent response is
Passenger Airline Reservation System (PARS), which is
actually a combination application and protocol.
{
Many communications processors routinely perform
multiplexing/ demultiplexing operations. This process
allows several communications lines to be compressed into
one high-speed line. The data is then burst across the line
and upon reaching its destination returned to its original
state. This method is less sophisticated than concentrating,
but an equally effective way to reduce line charges.
Although intelligence resides at both ends, it is basically a
hardware function and does not require software
compatibility with the host.
An important function of many communications
processors is the ability to allow a terminal to access
mUltiple applications residing within one host, or to access
more than one host. Some network processors that do not
distinguish between terminals and host ports can make
connections between any two termination points in the
network. Terminal-initiated applications switching
permits the terminal user to specify which application
he/she wishes to access, with all addressing and routing
performed transparently by the communications
processor. Typically, a communications processor with
this capability also provides some mechanismpasswords, configurational "class" codes, etc.-by which
access authorization and restriction are controlled.
Communications processor-initiated dynamic line
recorifiguration allows the user to define and activate
a new line, or disable an existing line, from the
communications processor console. The process takes
place while the system is in an active state; no sysgen is
required.
(
Another housekeeping function performed by some
communications processors is protocol and code
conversion. This feature allows normally incompatible
devices and systems to "speak" to one another without any
additional interfaces or user intervention. For example,
less expensive ASCII terminals may be ,used to connect to
JUNE 1982
C13-010-117
Processors
an IBM 3270 application, with n~cessary conversions
performed by the communications processor.
Every processor has some means of detection and error
control. At the very least, there is typically a parity
checking mechanism. Two of the more sophisticated
algorithms frequently used are Longitudinal Redundancy
Check (LRC) and Cyclical Redundancy Check (CRC).
Some communications processors have the very valuable
built-in feature of automatic transmission speed detection.
This function senses the speed of an incoming transmission
and then automatically adjusts the channel interface to
receive the call. Without automatic speed detection, each
line must be configured for use at a specified speed;
consequently, a user must dedicate one or more
communications lines for every speed in use. With it, the
same user may be able to make more efficient use of fewer
lines, and residually, to reduce the number of busy signals
on the network.
Some communications processors will automatically
disconnect an inactive dial-up terminal if that terminal has
been silent for a pre-programmed length of time. The
automatic disconnection of a dormant terminal has saved
many a user unnecessary line charges and non-productive
occupation of a host port in situations where terminal
operators leave their posts to take a coffee or lunch break
without signing off.
System Characteristics
It should be kept in mind that a communications processor
'is in essence a mini- or microcomputer, specially
programmed for communications-specific functions. As
such, it shares many attributes with the more common
general-purpose type of system.
Processor type specifies the manufacturer and model of
the central processor used in the communications system.
A vendor may build a processor or get it from another
vendor. Motorola, Intel, and Zilog seem to be supplying
the majority of processors currently being used. The
processor supplies most of the intelligence and is central to
the manipUlation of data.
Main memory word size (length) is the number of bits that
can be stored or retrieved from memory using a single
machine cycle. We are currently in the midst of a rapidlyoccurring technological revolution that involves
development and mass production of microprocessors
that support increasingly larger word lengths. As 32-bit
microprocessors, such as the Motorola 68000, become
'readily available, older 8-bit and 16-bit chips are expected
to be phased out. During this transition, you will find
word lengths of eight, 16, and 32 bits represented in the
chart entries.
In terms of operations, since a byte is eight bits, these
microprocessors neatly accommodate 1-, 2-, and 4-byte
processing. For example, a chip that has a 32-bit word
length has the ability to process four bytes simultaneously. 1:>
© 1982 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-118
Processors
Communications ProcessorsManagement Perspective and /
Equipment Specifications
I:> The longer word lengths permit greater precision,
increased instructions, better performance, and more
memory locations to be addressed.
Although 16- and 32-bit systems have the ability to process
multiple bytes using a single machine cycle internally, all
do not enjoy the same level of sophistication when passing
data to external devices. Some vendors have retrofitted the
data bus of their systems, which is the pathway by which
data is transmitted between the processor and external
devices, to accommodate th~ longer word length used by
the processor, thus also maximizing the data transfer
process. Others have not.
Main memory storage capacity is dependent on the
number of memory locations that can be addressed by the
processor. The entry shows the maximum amount of main
storage available for each processor, expressed in
thousands (K) or millions (M) of bytes.
Front-end processors transfer data across the channel tothe host computer at very high-speeds. The level of data
transferred across an 110 channel is indicative of the
sophistication of the system. Less sophisticated communications processors, such as 270X emulators, transfer
data one byte at a time. In order to pass the data
more efficiently, higher level front-end processors package
transmissions in multiple-byte blocks. Each block consists
of a fixed number of bytes. Even more sophisticated
systems can handle variable-length data transfers, and can
transmit an entire file at a time to the host; only a few
vendors are capable of performing this function.
The type of data supported between memory and:
communications lines, mass storage, or other peripherals
refers to the manner in which data is transferred to and
from memory. Critical to this process is how much of a
disturbance (interruption) the transfer causes in the central
processor. Many of the microprocessors used today permit
Direct Memory Access (DMA). DMA allows the external
device to access the memory to perform read, write, and
other memory functions without disturbing the
microprocessor's registers or interrupting the microprocessor's processing cycle. Without DMA, an external
communications line, peripheral, or other device must
interrupt the microprocessor in order to access the
memory. The interrupt must be recognized and the
device's request processed, thus utilizing valuable machine
time and cycles, and contributing to the performance
deterioration of the microprocessor. To use an extreme
example, this could turn out to be the bottleneck for an
entire communications network.
Some communications processors support a variety of
external peripheral devices. 110 refers to system-related
input/ output devices, such as a console CRT, printer, tape
drive, or disk drive that may be utilized by the processor
for system-level activities. Such activities might include
system configuration and control, statistics gathering and
reporting, and network monitoring. Peripheral devices
such as disk drives may also be used as temporary back-up
storage during an emergency or maintenance outage. The
/
data stored can then be transferred back to the processor
once the difficulty has been corrected. Many processors
also allow diagnostic peripherals like line, testers and
various network control devices to connect directly to a
systems interface established specifically for this purpose.
Sometimes these devices may be mounted within the
processor and thus be an integral part of the unit. More
frequently, they are externally connected to the system via
a designated "diagnostics port."
Most communications processors have a local console
which is used to perform systems control functions.
However, a growing number of processor vendors now
offer support for a remote console. This feature permits a
terminal at a remote site to access the systems operations
of the communications processor via dial-up or leased-line
facilities, diagnose a problem or make an adjustment, and
then restart the system (sysgen) if necessary. Because the
remote console has access to all systems functions and
operations, several layers of security precautions are
usually enforced to safeguard against unautJ:!orized
entrance. These may be a combination of hardware and
software including a secure port, special firmware, and/ or
passwords.
Vendors find the remote console function to their liking
because they can duplicate a problem, correct it, and
advise the customer without leaving their own facility, thus
saving on costly overhead associated with field engineering
personnel. It's also good for the customer because it helps
get the processor problem corrected a lot quicker than
waiting for a service call.
Communications processors, like other computers, have
operating systems implemented in firmware, software, or a
combination. Firmware is program logic written and
stored on a read-only integrated circuit residing inside the
processor, and is generally not alterable by the user.
Software, of course, is program logic loaded into the
processor's main memory from an external source, such as
a diskette or a host computer, and is easily modified by a
programmer or updated by the vendor. Most operating
systems implemented today uttlize a combination of
software and firmware.
The Initial Program Load (IPL) method employed may be
internal self-loading initiated by the user simply flipping a
switch or pushing a button to start-up the system,
(figuratively, the system pulls itself up by its own
bootstraps, aka "booting''). On some machines, all
programs are stored in firmware, and the start-up process
is completed by the bootstrap method. In other systems,
botting only begins the process of bringing up the machine;
the remaining program logic must be manually loaded
from a diskette or other media, or downloaded from a
host.
For functions not supported by the basic operating system,
the communications processor vendor may offer
additional software support in the form of preprogrammed packages, and/ or support user programmability. Vendor-supplied software may include various I:>
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
JUNE 1982
C13-010-119
Processors
Communications Processors
:(
1:> development and mass production of microprocessors
that support increasingly larger word lengths. As 32-bit
microprocessors, such as the Motorola 68000, become
readily available, older 8-bit and 16-bit chips are expected
to be phased out. During this transition, you will find word
lengths of eight, 16, and 32 bits represented in the chart
entries.
In terms of operations, since a byte is eight bits, these
microprocessors neatly accommodate 1-, 2-, and 4-byte
processing. For example, a chip that has a 32-bit word
length has the ability to process four bytes simultaneously.
The longer word lengths permit greater precision,
increased instructions, better performance, and more
memory locations to be addressed.
Although 16- and 32-bit systems have the ability to process
mUltiple bytes using a single machine cycle internally, all
do not enjoy the same level of sophistication when passing
data to external devices. Some vendors have retrofitted the
data bus of their systems, which is the pathway by which
data is transmitted between the processor and external
devices, to accommodate the longer word length used by
the processor, thus also maximizing the data transfer
process. Others have not.
Main memory storage capacity is dependent on the
number of memory locations that can be addressed by the
processor. The entry shows the maximum amount of main
storage available for each processor, expressed in
thousands (K) or millions (M) of bytes.
Front-end processors transfer data across the channel to
the host computer at very high-speeds. The level of data
transferred across an I/O channel is indicative of the
sophistication of the system. Less sophisticated
communications processors, such as 270X emulators,
transfer data one-byte at a time. In order to pass the data
more efficiently, higher level front-end processors package
transmissions in multiple-byte blocks. Each block consists
of a fixed number of bytes. Even more sophisticated
systems can handle variable-length data transfers and can
transmit an entire file at a time to the host; only a few
vendors are capable of performing this function.
The type of data supported between memory and
communications lines, mass storage, or other peripherals
refers to the manner in which data is transferred to and
from memory. Critical to this process is how much of a
disturbance (interruption) the transfer causes in the central
processor. Many of the microprocessors used today permit
Direct Memory Access (DMA). DMA allows the external
device to access the memory to perform read, write, and
other memory functions without disturbing the microprocessor's registers or interrupting the microprocessor's processing cycle. Without DMA, an external
communications line, peripheral, or other device must
interrupt the microprocessor in order to access the
memory. The interrupt must be recognized and the
device's request processed, thus utilizing valuable machine
time and cycles, and contributing to the performance
DECEMBER 1983
deterioration of the microprocessor. To use an extreme
example, this could turn out to be the bottleneck for an
entire communications network.
Some communications processors support a variety of
external peripheral devices. I/O refers to system-related
input/ output devices, such as a console CRT, printer, tape
drive, or disk drive that may be utilized by the processor
for system-level activities. Such activities might include
system configuration and control, statistics gathering and
reporting, and network monitoring. Peripheral devices
such as disk drives may also be used as temporary back-up
storage during an emergency or maintenance outage. The
data stored can then be transferred back to the processor
once the difficulty has been corrected. Many processors
also allow diagnostic peripherals like line testers and
various network control devices to connect directly to a
systems interface established specifically for this purpose.
Sometimes these devices may be mounted within the
processor and thus be an integral part of the unit. More
frequently, they are externally connected to the system via
a designated "diagnostics port."
Most communications processors have a local console
which is used to perform systems control functions.
However, a growing number of processor vendors now
offer support for a remote console. This feature permits a
terminal at a remote site to access the systems operations
of the communications processor via dial-up or leased-line
facilities, diagnose a problem or make an adjustment, and
then restart the system (sysgen) if necessary. Because the
remote console has access to all systems functions and
operations, several layers of security precautions are
usually enforced to safeguard against unauthorized
entrance. These may be a combination of hardware and
'software including a secure port, special firmware, and/ or
passwords.
Vendors find the remote console function to their liking
because they can duplicate a problem, correct it, and
advise the customer without leaving their own facility, thus
saving on costly overhead associated with field engineering
personnel. It's good for the customer because it helps get
the processor problem corrected a lot quicker than waiting
for a service call.
Communications processors, like other computers, have
operating systems implemented in firmware, software, or a
combination. Firmware is program logic written and
stored on a read-only integrated circuit residing inside the
processor, and is generally not alterable by the user.
Software, of course, is program logic loaded into the
processor's main memory from an external source, such as
a diskette or a host computer, and is easily modified by a
programmer or updated by the vendor. Most operating
systems implemented today utilize a combination of
software and firmware.
Initial Program Load (IPL) method employed may be
internal self-loading initiated by the user simply flipping a
switch or pushing a button to start-up the system,
(figuratively, the system pulls itself up by its own 1:>
© 1983 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-120
Processors
Communications Processors
1:> bootstraps, aka "booting"). On some machines, all
programs are stored in firmware, and the start-up process
is completed by the bootstrap method. In other systems,
booting only begins the process of bringing up the
machine; the remaining program logic must be manually
loaded from a diskette or other media, or downloaded
from a host.
For functions not supported by the basic operating system,
the communications processor vendor may offer
additional software support in the form of preprogrammed packages, and! or support user programmability. Vendor-supplied software may include various
utility programs for routine types of tasks, and
programming language compilers or interpreters. Some
operating software is parameter-based and permits the
user to customize the system's functions and line
configuration by selecting applicable parameters from
various menus embedded in the operating system.
Although this is not true programming, this method,
depending on the extent of the menus, can offer great
latitude in the formation of communications processing
applications.
Some vendors offer sofiware separately priced, while
otrers "bundle" it into the total cost. Some vendors may
only charge for optional software, such as utilities.
To judge the amount of user-created programs actually
being written, we asked the vendors to approximate the
proportion of their currently instal/ed systems supplied as
turnkey systems. A turnkey system is a system that
becomes immediately operational without additional
intervention on the part of the user. Since this type of
system is up and running as soon as the "key is turned," it
does not require the user to maintain costly on-site
personnel in order to maintain hardware or software
operations.
The date o.ffirst delivery is not the announcement date of
the product, but the date when the first system of this
model was installed on a customer site. The number of
systems installed to date may help you to discern the
magnitude of the market, but does not always reveal the
relative merits of a communications processor. Some
recently announced products may have great attributes,
but a modest installed base. Large installed bases may
simply reflect effective marketing or an outdated, but once
useful product. Please also refer to our user survey located
earlier in this report for more telling data.
As we mentioned previously, a processor may be sen'iced
by the vendor, a third party, or other means. Be advised
that a vendor listed as performing service may, in reality,
only provide factory service. In these cases, the user must
mail in a faulty board or part to the vendor's factory for
service or replacement. Other vendors may provide full onsite field service and! or a remote diagnostics capability.
When compiling a study of this sort, we sometimes come
across a product whose basic characteristics are not
completely covered by the designated categories we've
delineated. The comments help to amplify preceding
entries or to explain key elements of a product that may be
overlooked in the formal chart entries.
Communications Processor Vendors
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone
numbers of the vendors whose communications products
are shown in the comparison charts that follow.
Action/Honeywell, 4401 Beltwood Parkway South. Dallas. Texas
75234. Telephone (214) 386-3500.
Amdahl Communications Systems Division (formerly Tran
Telecommunications), 2500 Walnut Avenue. Marina del Rey.
California 90291. Telephone (213) 822-3202.
Amdahl Corporation, 1250 East Arljues Avenue. Sunnyvale.
California 94086. Telephone (408) 746-6000.
Pricing and Availability
We've shown the purchase price. monthly maintenance.
and monthly lease/rental for a minimum configuration.
including al/ hardware components required for basic
operation. This basic system shoul d be sufficiently
functional to perform in applications considered entrylevel for this system. The maximum practical configuration represents the largest fully configured system that the
vendor considers practical to deliver. Because lease and
maintenance contracts are not always available from
vendors, prices for these items may not appear in a specific
chart. In such cases, you might check with the vendor as to
whether leases and maintenance are provided by a third
party.
We asked if maintenance is bundled with the lease / rental.
If it is, no additional charge for normal service is applied.
However, bundling of service does preclude the option on
the part of the user of seeking out a third party
maintenance organization or performing "do it yourself"
maintenance, unless that user wishes to pay twice for the
same service.
Amnet, Inc. (formerly ASI Teleprocessing, Inc.), 101 Morse Street.
P.O. Box 412. Watertown. Massachusetts 02172. Telephone (617)
923-1850.
Auscom, Inc., 2007 Kramer Lane. Austin. Texas 78758. Telephone
(512) 836-8080.
BBN Computer, 33 Moulton Street. Cambridge. Massachusetts
02238. Telephone (617) 497-2800.
BetaCom Corporation, 245 E. 6th Street, St. Paul, M N 5510 I.
Telephone (612) 292-8188, (800) 238-2266.
Braegen Corporation, 20740 Valley Green Drive. Cupertino.
California 95014. Telephone (408) 255-4200.
Burroughs Corporation, Burroughs Place. Detroit. Michigan 48232.
Telephone (313) 972-7000.
Cableshare, Inc., 20 Enterprise Drive. P.O. Box 5880. I.ondon.
Ontario. Canada N6A 41.6. Telephone (519) 686-2900.
/-
Centennial Computer Products, Inc., 6100 Executive Boulevard.
Rockville. Maryland 20852. Telephone (30 I) 984-9120.
Century Analysis, Inc., 114 Center Avenue. Pacheco. California
94553. Telephone (415) 680-7800.
© 1983 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
DECEMBER 1983
t>
Communications ProcessorsManagement Perspective and
Equipment Specifications
f
I> utility programs for routine types of tasks, and
programming language compilers or interpreters. Some
operating software is parameter-based and permits the
user to customize the system's functions and line
configuration by selecting applicable parameters from
various menus embedded in the operating system.
Although this is not true programming, this method,
depending on the extent of the menus, can offer great
latitude in the formation of communications processing
applications.
Some vendors offer software separately priced, while
others "buhdle" it into the total cost. Some vendors may
only charge for optional software, such as utilities.
As we mentioned previously, a processor may be serviced
by the vendor, a third party, or other means. Be advised
that a vendor listed as performing service may, in reality,
only provide factory service. In these cases, the user must
mail in a faulty board or part to the vendor's factory for
service or replacement. Other vendors may provide full onsite field service and/ or a remote diagnostics capability.
Try as we might, when compiling a study of this sort, we
sometimes come across a product whose basic characteristics are not completely covered by the designated
categories we've delineated. The comments help to amplify
preceding entries or to explain key elements of a product
that may be overlooked in the formal chart entries.
To judge the amount of user-created programs actually
being written, we asked the vendors to approximate the
proportion of their currently installed systems supplied as
turnkey systems. A turnkey system is a system that
becomes immediately operational without additional
intervention on the part of the user. Since this type of
system is up and running as soon as the "key is turned," it
does not require the user to maintain costly on-site
personnel in order to maintain hardware or software
operations.
Listed below, for your convenience in obtaining additional
information, are the full names, addresses, and telephone
numbers of the vendors whose communications products
are shown in the comparison charts that follow.
Pricing and Availability
Amdahl Communications System Division (formerly TRAN Telecommunications), 2500 Walnut Avenue, Marina del Rey, California
90291. Telephone (213) 822-3202.
We've shown the purchase price, monthly maintenance,
and monthly lease/rental for a minimum configuration,
including all hardware components required for basic
operation. This basic system should be sufficiently
functional to perform in applications considered entrylevel for this system. The maximum practical configuration represents the largest fully configured system that the
vendor considers practical to deliver. Because lease and
maintenance contracts are not always available from
vendors, prices for these items may not appear in a specific
chart. In such cases, you might check with the vendor as to
whether leases and maintenance are provided by a third
party.
We asked if maintenance is bundled with the lease/rental.
If it is, no additional charge for normal service is applied.
However, bundling of service does preclude the option on
the part of the user of seeking out a third party
maintenance organization or performing "do it yourself'
maintenance, unless that user wishes to pay twice for the
same service.
(
C13-010-119
Processors
The date offirst delivery is not the announcement date of
the product, but the date when the first system of this
model was installed on a customer site. The number of
systems installed to date may help you to discern the
magnitude of the market, but does not always reveal the
relative merits of a communications processor. Some
recently announced products may have great attributes,
but a modest installed base. Large installed bases may
simply reflect effective marketing or an outdated, but
once useful product. Please also refer to our user survey
located earlier in this report for more telling data.
JUNE 1982
Communications Processor Vendors
Action/Honeywell,4401 Beltwood Parkway South, Dallas, Texas
75234. Telephone (214) 386-3500.
'Amdahl Corporation, 1250 East Arques Avenue, Sunnyvale,
California 94086. Telephone (408) 746-6000.
Amnet, Inc. (formerly ASI Teleprocessing, Inc.), 101 Morse Street,
P.O. Box 412, Watertown, Massachusetts 02172. Telephone (617)
923-1850.
Auscom, Inc., 2007 Kramer Lane, Austin, Texas 78758. Telephone
(512) 836-8080.
BBN Computer, 33 Moulton Street, Cambridge, Massachusetts
02238. Telephone (617) 497-2800.
Braegen Corporation, 20740 Valley Green Drive, Cupertino,
California 95014. Telephone (408) 255-4200.
Burroughs Corporation, Burroughs Place, Detroit, Michigan 48232.
Telephone (313) 972-7000.
Cableshare, Inc., P.O. Box 5880, London, Ontario, Canada N6A
4L6. Telephone (519) 689-2900.
Centennial Computer Products, Inc., 6100 Executive Boulevard,
Rockville, Maryland 20852. Telephone (301) 984-9120.
Century Analysis, Inc., 114 Center Avenue, Pacheco, California
94553. Telephone (415) 680-7800.
Chi Corporation, 2111 Chagrin Boulevard, Beachwood, Ohio 44122.
Telephone (216) 991-9000.
Codex Corporation, 20 Cabot Boulevard, Mansfield, Massachusetts
02048. Telephone (617) 364-2000.
Commex, Ltd., 141 Central Park Avenue South, Hartsdale, New
York 10530. Telephone (914) 328-0600.
Computer Communications, Inc., 2610 Columbia Street, Torrance,
I>
California 90717. Telephone (213) 320-9101.
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-120
Communications ProcessorsManagement Perspective and
Equipment Specifications
Processors
I:> Comten, Inc.: see
NCR Comten, Inc.
NCR Corporation: see NCR Comten, Inc.
Control Data Corporation, 8100 34th Avenue South, Minneapolis,
Minnesota 55420. Telephone (612) 853-8100.
NCR Comten, Inc., 2700 Snelling Avenue North, St. Paul,
Minnesota 55113. Telephone (612) 638-7777.
Datastream Communications, Inc., 1115 Space Park Drive, Santa
Clara, California 95050. Telephone (408) 727-2980.
North American Philips Corporation, Communications Systems
Division, 55 Knightsbridge Road, Piscataway, New Jersey 08854.
Telephone (201) 457-0400.
Digital Communications Associates, Inc., 303 Research Drivel
Atlanta, Norcross, Georgia 30092. Telephone (404) 448-1400.
Paradyne Corporation, 8550 Ulmerton Road, Largo, Florida 33541.
Telephone (813) 536-4771.
Digital Communications Corp.: see MA/COM DCC Inc.
Periphonics Corporation, 4000 Veterans Memorial Highway,
Bohemia, New York 11716. Telephone (516) 467-0500.
GTE Telenet Communications Corporation, 8229 Boone Boulevard,
Vienna, Virginia 22180. Telephone (703) 442-1000.
Honeywell Information Systems, Inc., 200 Smith Street, Waltham,
Massachusetts 02154. Telephone (617) 895-6000.
IBM Corporation, Information Systems Group, National Accounts
Division, 1133 Westchester Avenue, White Plains, New York 10604.
Telephone (914) 696-1900.
ICCI, 196 Broadway, Cambridge, Massachusetts 02139. Telephone
(617) 864-3270.
ICOT Corporation, 830 Maude Avenue, Mountain View, California
94043. Telephone (800) 528-6050 x 1711 (U.S. except Arizona,
Alaska, and Hawaii), (800) 352-0458 x 1711 (Arizona), (800) 5280470 (Alaska and Hawaii).
Raytheon Data Systems Company, Minicomputer/Communications Operation, 360 Forbes Boulevard, Mansfield, Massachusetts
02048. Telephone (617) 339-7752.
Sperry Univac (Division of Sperry Corporation), P.O. Box
500, Blue Bell, Pennsylvania 19424. Telephone (215) 542-4011.
Stamet Data Systems, Protex Industries, Inc., 1331 West Evans
Avenue, Denver, Colorado 80223. Telephone (303) 935-3566.
Systems Research, Inc.: see Burroughs Corp.
Tandem Computers, Inc., 19333 Vallco Parkway, Cupertino,
California 95014. Telephone (408) 725-6000.
Telefile Computer Products, Inc., 17131 Daimler Street, Irvine,
California 92714. Telephone (714) 554-6660.
Lemcom Systems, Inc., 2104 West Peoria Avenue, Phoenix, Arizona
85029. Telephone (602) 944-1543.
Thomas Engineering Company, 1040 Oak Grove Road, Concord,
California 94518. Telephone (415) 680-8640.
MIA-COM DCC, Inc., 11717 Exploration Lane, Germantown,
Maryland 20874. Telephone (301) 428-5500.
TRAN Telecommunications Corporation: see Amdahl Communications Systems Division.
Memorex Communications Group, 18922 Forge Drive, Cupertino,
California 95014. Telephone (408) 996-9000.
TRT Data Products, Norfield Communications Division, 3 Depot
Place, East Norwalk, Connecticut 06855. Telephone (203) 853-2777.
Modular Computer Systems, Inc. (Modcomp), P.O. Box 6099,1650
West McNab Road, Ft. Lauderdale, Florida 33310. Telephone (305)
974-1380.
Westinghouse Canada, Incorporated, Electronic Systems Division,
777 Walker's Lirie, P.O. Box 5009, Burlington, Ontario, Canada
L7R 4B3. Telephone (416) 528-8811.0
..
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
JUNE 1982
C13-010-121
Processors
Communications Processors-Management Perspective
and Equipment Specification
Action/Honeywell
Mercury Message
Management System
SUPPLIER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
FUNCTIONAL CONFIGURATIONS
Front-end processor
Max. no. of hosts channel-attachable to front-end
Max. no. of active hosts supported simultaneously
IBM emulation
Remote line concentrator
Maximum no. of hosts served by one concentrator
Host-independent network processor
Store-and-forward message switching processor
Distributed processing node
Terminal controller
Network Architecture compliance
Communications line capacity:
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported (bps)
Effect on line capacity, if all lines are full-duplex
COMMUNICATIONS FEATURES/FUNCTIONS
Multiplexing/demultiplexing:
Terminal-initiated applications switching
Comm. processor-initiated dynamic line reconfig.
Protocol conversion
Code conversion
Error control
Automatic transmission speed detection
Automatic disconnect of inactive dial-up terminals
('"
SYSTEM CHARACTERISTICS
Processor
Main memory word size, bits
Main memory storage capacity, bytes
Level of data unit transferred across I/O channel
Type of data transfer supported between memory and:
Communications lines
Mass storage
Other peripherals
I/O, back-up, and diagnostic peripherals
supported
Support for remote console
Communications operating software:
Operating system implemented in
Most major vendors
Amdahl 470, 580 and
capatibles
No
Yes
4
4
270X, 3705 with NCP
Yes
1
No
No
No
No
SNA
-
-
No
-
No
Yes
No
No
No
128
128
19.2K
None
Most major vendors
No
No
-
Yes
Network-dependent
Yes
No
Yes
Yes
No
Yes
Network-dependent
Yes
No
Yes
Yes
No
352
352
Application-dependent
56K
Capacity halved
100
100
Network-dependent
19.2K
None
104
104
52
64K
None
No
Yes
No
Yes
Yes
Yes
No
No
CRC
No
No
Proprietary
16
64K
Block
-
-
ASCII/EBCDIC
Yes
Comm-pro 50-1200 bps
Yes
Yes
Yes
No
No
No
CRC
50 to 9600 bps
Yes
Data General Nova 3
16
256K
Byte
Proprietary
18
512K
Byte or block
CA 2/40
16
208K
Byte
Both DMA & interrupt
Both DMA & interrupt
Both DMA & interrupt
Both DMA & interrupt
Diskette and self
diagnostics
Yes
Yes
All X25 equipped
vendors
-
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Interrupt
DMA
DMA
Disk, mag tape
Amdahl
Communications
Systems Division
4410 Network
Processor
Amdahl
Communications
Systems Division
3400 Series
Amdahl
4705
-
-
Diskette
No
-
Interrupt
-
Yes
Software
Software
IPL method
Additional software supported
Internal self-load
None
Download from host
Comm-pro
Combination of software and firmware
From disk. & DP node
Combination of software and firmware
Load from diskette
-
-
User programmability
Yes, via user-selected
parameters
None
Yes
Yes
Yes
Yes
Yes, via user-selected
parameters
Yes
All
5%
All
All
200,000
1,000
Third party
48,000
440
200,000
2,000
1.400 (2 yr. lease)
-
127,000
1,600
Federal goY!. only
Maximum practical configuration:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
500,000
2,500
Third party
300,000
2,000
11,000 (2 yr. lease)
5,000,000
50,000
-
300,000
3,000
Federa I goY!. on Iy
Is maintenance bundled with lease/rental?
Date of first delivery
Number of systems installed to date
Serviced by
No
1971
95
Honeywell
No
November 1979
160
Amdahl
-
-
-
1979
18
Amdahl
Mercury replaces Telecontroller as Action's
store-and-forward message switch system
with front-end capability
Operates with IBM
3705 and 3705/commpro software, with up to
1.8 times the 3705
throughput capacity
Software separately priced
Approx. proportion of currently installed
systems supplied as turnkey systems
PRICING AND AVAILABILITY
Minimum configuration, including all hardware
components required for basic operation:
Purchase price, $
Monthly maintenance, $
Monthly lease/rental, $
COMMENTS
JUNE 1982
June 1982
Amdahl
Handles mix of asynch.
and synch. traffic; used
in multi-vendor environment; proprietary packet
switching; supports
satellite transmissions
© 1982 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Performs self-diagnostics; supports 1980
CCID X25 recommendation
C13-010-122
Processors
Communications Processors-Management Perspective
and Equipment Specification
AmnElt
Nucleus 6000
SUPPLIER AND MODEL
C.
C13-01 0-1 02
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
t> facilities have not decreased as rapidly as microprocessorbased processing justifies placement of communications
processing equipment not only at the host site, but
throughout the data communications network.
Intimately tied to the evolution of intelligence for communications processing equipment, is the parallel development of intelligence for remote data processing equipment.
The assembly-line concept can be extended to all segments
of a network, in which many small systems perform
specific, specialized communications and data processing
tasks independently of the host computer. This decentralized or distributed data processing has given rise to a
new type of data processing module: the small processor or
minicomputer which performs both data and communications processing. IBM's Information 8100 System and
Sperry Univac's V77 family of minicomputers are two
examples of processors which can serve either as
independent processors, or as distributed systems which
offer significant communications control capabilities.
A third, and often overlooked, influence on the development of communications processors is the effort on the
part of most vendors towards standardization. This ongoing effort, along with hardware architectural improvements, is reducing the investment, inventory, and software
support necessary to support a variety of different terminal
and line disciplines, which are different for few justifiabie
reasons. Standardization, in addition to reducing costs to
existing users, will continually increase the user base that
can economically justify the use of electronic communications in their operations.
Recent Developments
The ground rules or network architectures announced by
most of the large mainframe and minicomputer manufacturers have codified their communications standards.
IBM's Systems Network Architecture, DEC's DECnet,
Sperry Univac's Distributed Communications Architecture, and Honeywell's Distributed Systems Environment
are examples of such architectures. Bit-oriented protocols
are rapidly being adopted that improve the performance
and error checking/ recovery capabilities of data transmissions. Minor variations of the international H DLC or
IBM's SDLC bit-oriented protocols are now supported by
many suppliers of communications equipment.
Communications processor hardware and software
architecture are continually being changed. Throughput
capabilities are enhanced by using mUltiple microprocessors within the communications processor to perform
specialized functions. Altering the microcode or stored
logic (either directly by the user or indirectly by such
features as IBM's Extended Facilities) has added a new
dimension to throughput improvement techniques.
Multiport memory access has facilitated warm-start backup systems. Virtual operating systems are taken for
granted and full-capability data base management systems
are being given serious consideration by installations
previously reluctant to accept the associated CPU
overhead.
Definition and Applications
A communications processor, in the context of this report,
is simply a digital computer that has been specilically
programmed to perform one or more control and; or
processing functions in a data communications network.
As a self-contained system, it mayor may nOt include the
following components, depending on its specific
application: communications lines multiplexer, line
adapters, central computer system interface, and on-line
peripheral devices. It always includes a specific set of usermodifiable software or interchangeable firmware
modules, which can be used to implement particular
customer requirements.
c
Communications processors do not represent a new
system design concept. During the industry's second generation, in the early 1960's, such processors were offered by
several of the major main-frame suppliers, including
Control Data's 8090/8050, General Electric's DATANET-30, and IBM's 7740. Also, as early as March 1963,
Col!lins Radio Company (now Rockwell-Collins) delivered its first Collins Data Control programmable
communications system. In almost all such early uses, the
systems were used primarily in message switching applications, acting simply as a message router and dispatcher
in a data communications network.
The principal differences today lie in the diversity of
application areas, the relatively low cost of such units, and,
by consequence, the trend toward widespread usage.
Listed below are some of the principal uses of communications processors in current data processing systems. It is important to note that many such units can be
used in a variety of application areas, with specific sets of
software and interface units for each application. The
currently popular types of applications include:
• Front-end processing. The most significant application
of communications processors, in terms of both frequency of use and level of complexity, is front-end
processing. The communications processor replaces a
hard-wired communications controller as the interface
between the central data processing system and the data
communications network. The concept of front-end
processing essentially involves off-loading or removing
the data communications control function from the
central processing unit and setting it up as an external,
largely self-contained system. The front-end processor
not only receives and transmits all data passing through
the network, but also, and significantly, can be
programmed to pre- and post-process this data in a
variety of ways in order to relieve the system's central
processing unit from time-consuming overhead
activities related to message formatting and control.
This decentralized approach to the distribution of
processing labor permits-Doth the communications and
central processors to perform their primary functions in
~
parallel and with little interference. Data is passed
between the processors only when necessary and with as
high a degree of efficiency as is possible in circuit design. I:>
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN.NJ 08076 USA
REPRODUCTION PROHIBITED
rr
FEBRUARY 1981
C13·010·103
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
• A typical front-end processor might control a hundred
or more communications lines of varying speeds and
types attached to a large number of diverse remote
terminals. The front-end processor would ideally
assume all terminal. line. buffering. and message control
functions. permitting the central processing unit and the
user application programs to treat the communications
network as just another high-speed. on-line peripheral
device.
• Front-end ·processors can perform their functions in
support of a wide variety of data processing
applications. Additionally. the more sophisticated
communications processors can be employed with
software which permits them to be automatically
reconfigured from a front~end mode of operation to that
.of a remote communications processor. This feature
permits a single front end to switch automatically to a
backup host in the event of a primary host failure. and
also to perform communications processing for both
local and remote hosts simultaneously.
• Line concentration. Communications processors sometimes fill the relatively simple role of communications
line concentrators. Here the processor generally terminates a number of low-speed transmission lines and
interfaces them to one or two higheNpeed lines for
more efficient and economical data transmission. Little.
if any. processing of the transmitted data is performed.
The programmable aspect of the processors is probably
less used in this application than in any of the other
currently popular uses. Hard-wired concentrators are
generally equally effective. suffering by comparison
only in their lack of flexibility.
• Dedicated processing. Many communication processors now have enough storage capacity and processing
power to enable them to serve as the sole or principal
computers in dedicated application systems of various
types. I n inquiry/response systems, for example, the
processor receives inquiry messages from remote
and/ or locally connected terminals, processes the
messages to determine the specific information
required. retrieves the information from on-line
random-access storage units. and sends it back to the
inquiring terminals. In systems of this type, applicationoriented processing is of equal importance with message
receipt and transmission.
• Message switching. The message switching processor
receives messages from remote terminals, analyzes them
to determine their proper destination, performs any
code conversions that may be necessary, and transmits
them to other remote terminals. The sending and/ or
receiving remote terminals may themselves be computer
systems. Most message switching systems are of the
store-and-forward type, in which the processor stores
the messages it receives on on-line auxiliary storage
units, such as disks, drums, or magnetic tape. The length
of time the messages are stored prior to transmission to
other terminals or computers can range from a few
FEBRUARY 1981
seconds to an entire day or more, depending on the
specific application needs and traffic volumes. The
processor performs little. if any, processing on the
messages; it acts principally as a traffic director.
Communications Processor Components
The essential components of every communications processing system are the following:
I. Processor. The processor element is a stored-program
digital computer of almost any size. It must have its
own main memory. but it mayor may not use on-line
peripheral devices. The processors should have excellent interrupt and/or direct memory access (DMA)
handling and strong bit manipulation capabilities .
2. Central processor interface. When acting as a frontend. the communications processor must include the
proper hardware interface to permit it to connect
directly to a standard input/ output channel of the
central processing unit (or host computer). Such an
interface should permit the host computer to com~
municate with the front-end processor as if it were a
standard peripheral device control unit, requiring little,
if any. operating system software modification. When
acting as a remote processor, suppOrt for data
communications line interfacing that connects the
processor with the host computer(s) must be provided.
3. Communications multiplexer. This component provides a logically independent data channel into the
communications processor's main memory fot every
transmission line being served. The multiplexer serves
as the communications processor's functional interface
with the data transmission lines. Control of incoming
and outgoing data is coordinated between the mUlti·
plexer and the processor via interrupts or direct
memory access (DMA).
4. Line interface units. These components are hardwired
devices that link the multiplexer with the modems that
terminate each communications line. Like the modems,
the line interface units are specifically tailored to serve
the speed transmission characteristics of the lines they
terminate.1:Qe lines are" in turn. generally selected
according to the transmission requirements of the
remote terminal devices.
5. Sofiware/ Firmware. The communications processing
hardware components become an integrated, functioning system only through the inclusion of stored~
program logic (either firmware or software)-some
generalized, and some highly specialized. The programs
should include terminal control, line control, message
control, and central system interface procedures. De·
pending on the supplier, the user may have to provide
some portion of the software required to implement
specific requirements.
t:>
© 1981 DATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-104
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
t> Communications Processor Functions
Because a communications processor is essentially a computer, it can be programmed to perform an almost limitless
variety of functions. But in its role as controller of a data
communications network, the specific functions generally
programmed are those that relate to data and message
control. The following functions are the most important
ones offered with the more comprehensive communications processing systems. Some systems will not provide all
these functions, as all are not required in specific
installations.
I. Line ('Ontrol. This involves the periodic polling of
terminals to determine readiness to transmit and
receive data. Automatic call answering, acknowledgement, and dial-up can also be handled.
2. Character and message assembly. Bits are assembled
(and disassembled) into parallel characters, and/ or
control characters are recognized to permit the assembly and disassembly of entire messages. Data can
be handled at varying line speeds and in synchronous
or asynchronous formats, with start-stop bits and
synchronizing characters handled automatically.
3. Data and protocol conversion. The data transmission
codes (such as Baudot, ASCII, etc.) and protocolprescribed formats are converted into structures that
are equivalent to the hosts native data code (such as
EBCDIC) or conform to the formats of more efficient
protocol procedures.
4. Data and message editing. This is a general function
that can include application-oriented reformatting,
removal of spaces and zeros (and other kinds of data
compression), and other data restructuring to permit
more efficient data transmission and more efficient
processing by the host~ computer.
5. Error control. Using both hardware and software
techniques. the communications processor can detect
and correct data transmission errors before they reach
the host computer.
6. Message b~ffering and queuing. The communications
processor can buffer several messages in its main
memory before passing them to the host computer.
with the intention of interrupting that computer as
infrequently as possible. Also, if the host computer
cannot process incoming messages as fast as they
arrive into the system, the communications processor
can queue these messages in its own auxiliary storage
units, such as disks. drums. or magnetic tape units,
and can transfer these messages to the host computer
when processing time becomes available. Queue management can be arranged in several different ways,
including a system of priorities.
7. Message switching. When the communications processor serves more than one host computer. it will
analyze message headers and addresses and send each
incoming message to the proper destination. This
situation can occur when several computers share a
data communications network while each remains
dedicated to specific applications.
8. Message answering. Certain messages. such as simple
inquiries, can be completely processed by the communications processor without any contact with the
central data processing system. Since many com~
munications processors permit attachment of on-line
auxiliary storage units, these processors can store and
access their own private data bases. Some systems
also permit the communications processors to directly
access the auxiliary storage subsystems and data files
of the host computer.
9. Message recording. Vital inbound messages can be
passed on to the host computer while being simultaneously recorded in the communications processor's auxiliary storage. Such message recording can
assist in system restart operations in case the central
system should malfunction and lose either its
messages or the results of processing the messages.
Also. it may be advisable in some systems to store a
journal record of every message received during each
processing period.
10. Statistics recording. The communications processor
can keep a running record of all data communications
traffic, including such statistics as total number of
messages processed. number of messages delivered to
each destination. number of line errors, average
length of time in queue, number of busy signals, etc.
These statistics can be dumped on demand or in the
form of reports at the end of each processing cycle.
Other application-oriented functions can be programmed
by the communications processor supplier, by the user, or
by some combination of the two. It must be remembered,
however, that the communications processor, like the host
computer. has only a finite amount of processing power.
The more functions that are added to it in order to relieve
the host computer, the more likely it is to run out of power.
especially in active. growing communications networks. A
communications processor pushed beyond its capacity will
result in lost messages and. ultimately. in system failure.
Advantages of Communications Processing
Communications processors are enjoying increased
popularity in various parts of data communications
systems because they are demonstrating themselves to be
more and more effective on a price/performance basis.
Factors that can contribute to this price/ performance edge
include the following:
#",
\
I. Flexibility. Communications processors are designed
,-,
to handle many line speeds and transmission
characteristics in uniform or interchangeable circuitry
and to support a wide variety of remote terminals from 1:>
© 1981 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08015 USA
REPRODUCTION PROHIBITED
FEBRUARY 1981
C13-010-105
,
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
>
the mainframe and independent suppliers, regardless of
their transmission speeds, line control conventions,
synchronization techniques, and data codes. And since
they can be modified at any time and at comparatively
low cost by user or vendor, they are eminently well
suited to handling key roles in data communications
systems, which are typically characterized by
bewildering variety and constant change. As advances
in communication line facilities are made by the
common carriers, and also by the independent
companies", making available new, faster, and lowercost transmission services, the advantages of this
flexibility become eminently important in guarding
against system obsolescence.
2. Expandability. Communications processors permit
relatively easy growth of the data communications
network, principally by adding line interface units and
modifying the control programs.
/
3. Distribution of labor. Since these processors can be
programmed to perform varying amounts of productive processing, often in conjunction with their own
on-line peripheral devices, they can share portions of
the overall processing load with other processors in the
system-including the central processor. Peak loads
can be more effectively handled and critical bottleneCKS
more likely avoided. In the case of a front-end
processor, controlling the entire data communications
subsystem will relieve the system's central processing
unit on two counts: processing time and main memory
space. Central control of data communications
networks can consume 40 to 50 percent of the available
processing time in typical situations. And the resident
software control routines can easily consume in excess
of 50K bytes and frequently use up to 300K bytes or
more of main memory space, depending on the
functions perforrned. Efficient utilization of communications processors can provide almost full relief in both
processing time and memory space overheads. (If the
host processor is not overburdened, the need for a
programmable unit may be harder to justify.)
4. Fail-soft capability. In data communications systems
that include at least one other computer, programmable communications processors can provide some
form of continued system operation when one or more
of the other computers become inoperative. The degree
and effectiveness of this fail-soft capability depend not
only on the capabilities of the processor, but also,
perhaps more importantly, on the skill displayed by the
system architect in his provisions for redundant
components and fall-back procedures.
5. Independent processing. When communications
processors are not involved in their principal data
communications tasks, they can often be used as standalone data processing systems-provided, of course,
that their configuration includes some peripheral
input/ output devices. Simple media. conversion tasks,
such as card-to-tape and tape-to-print, can be valuable
FEBRUARY 1981
by-products from these otherwise communicationsoriented processors. and localized time-sharing can
yield added benctits. In off-line mode. the processor can
also be adapted to serve specialized 1,0 devicL'S. such as
plotters and OCR devices. that the central system may
not be able to handle.
Potential Problems
Communications processors deserve careful investigation
because of the vast variety of equipment currently
available. Such investigations should include as many
probing questions as possible. because there are
potentially serious pitfalls to be avoided.
One potential problem is the question of overloading the
communications processor, with the resultant loss of data.
Sophisticated data and message control programs will
consume large quantities of the communications
processor's computing and memory facilities, just as they
do in a centrally-based communications system. A tendency toward overloading can easily negate any apparent
advantages of expandability and growth potential.
Another serious question is that of software. The body of
software required for terminal control, line control, and
message control activities, not to mention applicationoriented pre-processing, is unquestionably complex. It is
also vital to the operation of these systems. The prospective user must determine whether or not the supplier is
capable of supplying this software, at what level of
completeness, with what assurance of bug-free stability,
with what chances of interfacing smoothly with the central
system software, and with how much installation
assistance. Obviously, if the software doesn't work properly, the system is of little value. From another point of
view, a system whose software works but performs very
few and very basic functions may be inadequate for present
or future needs.
Another consideration is that some communications
processor hardware/ software combinations may require
far more time and effort to install and make operational
than others, especially when the supplier of the
communications processor equipment is different from
that of the host computer system. Apart from the
traditional problems (real or imagined) of divided vendor
responsibility, there exists the very real problem of
integrating two completely different sets of hardware and
software.
A currently operational data communications installation
which is considering replacing hard-wired communications controller(s) with a more sophisticated communications processor must carefully evaluate the problems of
conversion. Beyond the usual problems of data integrity
and the logistics of arranging the conversion process, the
user may also be faced with the prospect of modifying
either his central system control software of his body of
application programs that use the communications
network.
{
1:>
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCnON PROHIBITED
C13-010-106
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
1>' Evaluating a communications processing system on a
cost/ value basis is extremely complex and can be almost
meaningless when performed in the abstract. Costs will
vary with the size and diversity of the network being
controlled. with the size and processing power of the
communications processor. with the number of control
and preprocessing functions incorporated (software is
expensive. whether hidden in a "bundled" system price or
not). and with the number of on-line peripheral devices.
Adding functfons that will permit use of "foreign" terminals, relieves the central processor of intolera ble overheads,
and allowing independent and back-up processing
may increase the costs but will also increase the value. In
order to evaluate the cost of the communications
processor in terms of the potential cost savings throughout
the system, an effort must be made to associate specific
dollar figures with the expected values to be derived from
one data communications .system versus another. In
summary, it should be clear that costs and values of
communications processing can be assessed only in terms
of specific situations and specific systems.
Designers of the data communicationssystem willprobably first contact the supplier of their present or planned
mainframe computer to investigate its offerings in the area
of data communications. If communications processors
.are strongly promoted as the best (sometimes only) way in
which to construct efficient. fully supported systems. the
designers will usually go along with the recommendations
of the mainframe supplier. The designers are comforted by
the belief that their data communications. subsystem will
be fully supported and will interface efficiently with the
central processing system. It is in this regard that
developments such as IBM's SNA and DEC's DECnet
increase in importance to systems designers.
But not all mainframe suppliers are equally advanced in
their data communications product line, and not all offer a
selection of communications processors supported with
product-line software. Recent computer system announcements have. however. brought forth a number of
such new products from the major manufacturers, as they
both follow and "legitimize" the trend toward use of these
processors.
Sources of Supply
One of the most interesting aspects of the story on
communications processors is that computer Users can
now obtain them from literally dozens of vendors. with
differing product implications depending on the source
selected.
Users not fully satisfied with the offerings of their
mainframe supplier can investigate the wares of other
promising suppliers. most of whom offer assurances that
their communications processors ·can be "plug-compatible" with either the hard-wired or programmable
communications controllers of the mainframe supplier. or
at least with its data communications hardware and
software interfaces.
The minicomputer manufacturers constitute one pronr
inent group of supplicrs who are actively pursuing the
communications processor market with products that can
either stand alone or interface smoothly with the mainframe equipment of other suppliers. Almost any currently
marketed minicomputer is· capable of serving as the
fundamental building block of a communications
processor. and many include communications hardware
and specialized software packages to permit themto serve
effectively as complete communications processing
products.
Sperry Univac's newest communications processor. the DCP /40.
was released. in June 1979 as a part of a major Series 1100
announcement. The DCP / 40 is a multiprocessor-based system that
can act as a front-end processor to a Sperry Univac 1100 Series or
Series 90 mainframe. or as a remote intelligent concentrator or nodal
processor in a Sperry Univac or multiple-vendor network.
A major source of integrated communications processing
products is the independent systems houses, especially
those that specialize in data communications systems.
Companies such as these will generally provide complete
hardware/ software packages. including communications
and central computer interfaces. In many cases they will
accept full responsibility for the design and implementation of the entire data communications system. Such
independent companies are generally well qualified in
producing effective data communications systems; but
.prospective buyers of such systems must still consider the
effects on the total system of dividing responsibility
between at least .two principal suppliers {communications
and central system) and assure themselves that the
products and systems of the several involved suppliers will
indeed interface properly and function harmoniously.
1:>
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
FEBRUARY 1981
C13-010-107
Communications ProcessorsManagement Perspective and Equipment Specifications
(
.
-'> Regardless of which type of supplier is selected, the buyer
./ should show partiality to those vendors who will not only
guarantee turnkey installation of their equipment but will
also provide plans for future growth. If the user is faced
with the formidable task of interfacing and integrating a
variety of impressive but highly dissimilar communications and processing equipment, the proposed system may
never get past the design stage.
Buying Guidance
The communications processing products have not
matured to the point where their descriptive terminology is
in any way standardized or consistent. As a result,
prospective buyers must make every effort to determine
exactly what they will be getting and what they will not.
The sales brochures and technical manuals are often not
sufficiently informative (and sometimes downright
misleading).
For example, there are at present two distinctly different
kinds of front-end processors. The first and more basic
variety is designed to simply replace the functions and
services of the central system's hard-wired controller. It
is meant to be a plug--compatible replacement, requiring
few, if any, changes to the central system's communications control software or the user's application programs.
It does not necessarily relieve the central system of any
software control overheads, but simply provides a more
flexible interface to the communications network for
accommodation of additional and varied lines and terminals in the future.
The most prevalent examples of this type of front-end
processor are the many available units designed to replace
or "emulate" the IBM 2701 Data Adapter Unit and the
IBM 2702 and 2703 Transmission Control Units. These
front-end processors function with the IBM System/36O
or System/370 computer systems through the standard
IBM BTAM, QTAM, and TCAM communications control software.
The second and more powerful variety of front-end
processor is designed to replace not only the functions
and services of the hard-wired controller, but also most
or all of the data communications control functions
normally performed by the central system's processing
unit and resident software. This variety of front-end
processor, by freeing the central processing unit for
productive work, provides valuable advantages not only
in data communications flexibility, but also in systems
throughput.
It is possible that a user may want to install the basic
kind of front-end processor initially and then gradually
add functions to it to relieve the central processing unit's
communications overheads. However, the user must make
sure that the selected front-end processor has enough
processing and memory capacity to permit the gradual
build·up of substantial message control routines, and
that the various responsibilities of both the vendor and
the user are clearly assigned.
FEBRUARY 1981
Processors
In the case of systems performing line concentration,
network node, and remote processing tasks, an equally
wide range of capabilities is represented by current
product offerings.
Another buyer's tip is to look for the word "turnkey."
Turnkey installation of communications processors
usually means that the supplier takes on full responsibility
for hardware, software, and interfaces requited to
essentially "plug in" the product. From a user's point of
view, this approach is highly desirable, since it can save
money, time, and aggravation. But the user must still
determine what product with what promised functions is
being offered on the turnkey basis. It may still be a
somewhat limited product.
A low list price can be totally misleading, since it may
include only the basic processor hardware and an associated communications multiplexer. The cost and effort
of establishing the proper interfaces and writing the allimportant software can be dropped squarely on the buyer,
who may have been trapped by an attractive low-price bid.
Since software development is such a critical question,
the buyer should determine early in the proceedings
exactly what software is provided with the basic system and at the basic price. If certain software is lacking,
such as specific remote terminal handlers or message
queuing routines, then implementation and integration
responsibilities should be clearly fixed, and with firm price
quotations.
The smart buyer will also ask the competing bidders for
clear statements of service, and support after installation.
Since data communications .subsystems can be complex
and demanding in any environment, it must be considered
an extremely valuable system feature if the prospective
supplier of the communications processor offers to assume
full operating and service responsibility for the externally
controlled communications network that is directed by his
product.
When considering a communications processor from a
source other than the supplier of the central computer
equipment, the buyer should insist on receiving concrete
performance data, drawn from installed systems, to
substantiate the supplier's claims. The buyer should
beware if the supplier refuses to back up his claims with
actual case studies. As further evidence of proven per·
formance, the buyer should personally contact as many
previous users as possible, probing not only for their
degree of satisfaction, but also fot the extent to which the
installed systems reflect his own intended system design
and functional objectives. However, even in highly
specialized reference accounts, meaningful information
can be derived regarding the supplier's competence and
willingness to help, and the basic reliability of the hardware/ software package.
When the proposed supplier is a major mainframe
manufacturer, the buyer will also want evidence of proven
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
t>
C13·010·10S
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
USERS' RATINGS OF COMMUNICATIONS PROCESSORS
\
User Ratings·
Processor
Number
of
User
~sponses
Number Average Average
of
No. of
No. of
Unes per Terminals
Units
Installed
Unit
per Unit
WA
Burroughs B B74
Burroughs, other models
Subtotals
Ease of
Installation
Overall
Satisfaction
E
G F P WA
E
G
F
Throughput
P WA
E
G
F
P
5
3
8
6
3
9
9
57
27
57
63
59
3.2
4.0
3.5
1
3
4
4
0
4
0 0
0 0
0 0
2.8
4.0
3.3
2
3
5
1
0
1
1
0
1
1
0
1
3.2
3.7
3.4
1
2
3
4
1
5
0
0
0
0
0
0
4
6
10
7
18
25
37
89
68
202
633
460
3.3
3.3
3.3
2
2
4
1
4
5
1 0
0 0
1 0
2.5
2.5
2.5
1
1
2
1
3
4
1
0
1
1
2
3
3.3
3.6
3.4
1
3
4
3
2
5
0
0
0
0
0
0
3
3
22
22
3.0
1
1
1 0
2.7
1
1
0
1
3.0
1
1
1
0
3
3
4
10
4
4
5
13
54
32
30
38
207
96
88
126
3.7
2.3
3.3
3.1
2
0
1
3
1
2
3
6
0
0
0
0
0
1
0
1
3.0
3.0
3.0
3.0
0
1
0
1
3
1
4
8
0
1
0
1
0
0
0
0
3.7
2.3
3.0
3.a
2
0
0
2
1
2
4
7
0
0
0
0
0
1
0
1
3
26
92
121
3
29
114
146
3
9
45
36
3
47
365
288
3.0
3.5
3.5
3.5
1
14
49
64
1 1 0
11 1 0
38 4 0
50 6 0
2.7
3.2
3.1
3.1
1
8
25
34
0
17
51
68
2 0
0 1
13 2
15 3
3.0
3.3
3.4
3.4
1
10
46
57
1
15
39
55
1 0
1 0
4 2
6 2
Memorex 1270
Memorex 1380
Subtotals
17
3
20
25
3
28
25
100
36
79
122
85
3.6
3.0
3.6
11
1
12
6
1
7
0 0
1 0
1 0
3.2
2.0
3.1
6
0
6
9
1
10
2
1
3
0
1
1
3.4
3.7
3.4
6
2
8
10
1
11
0
0
0
0
0
0
NCR 3650
NCR 3670
NCR 3690
NCR, unspecified models
Subtotals
34
21
12
3
70
48
38
30
5
121
58
170
130
24
102
139
20
9
4
2
35
12
8
8
1
29
2 0
4 0
10
4
2
0
16
18
14
10
2
44
0
0 0
6 0
3.2
3.1
3.2
2.3
3.1
5
2
872
141
345
3.5
2.9
3.3
3.7
3.4
0
7
0
0
0
1
1
3.5
3.6
3.4
3.3
3.4
21
9
6
1
37
8
11
5
2
26
5
0
1
0
6
0
0
0
0
0
3
3
15
1001
3.0
0
3
o
0
2.0
0
0
3
0
3.3
1
2
0
0
3.0
2
2
0 1
2.8
2
0
3
0
2.8
1
2
2
0
3
7
2 0
2.8
3
3
6
0
3.2
5
5
1
1
128 114 17 2
3.0
70
139
40 10
3.4
CCI CC-8
CCI CC-80 & CC-40
Subtotals
DEC, all models
Honeywell Datanet 355
Honeywell Datanet 6632
Honeywell, other models
Subtotals
IBM 2701
IBM 3704
IBM 3705
Subtotals
Periphonics T-Comm 7
Sperry Univac, all models
All Others
TOTAL
408
5
11
61
224
12
18
28
98
3.1
262
377
54
276
3.4
0 0
119 119
16 4
"USer ratings report the number of users responding Excellent (E), Good (G), Fair (F), and Poor (P)for each category. The weighted averages (WA)were
calculated byweighting the four ratings on a 4, 3, 2, 1 basis.
t> performance.
This evidence should apply to the overall
performance of the total, integrated data processing
system, and not just the communications subsystem.
When the mainframe supplier offers a choice of several
levels of processing capability (as several now do), then the
buyer wiIJ again want specific, tangible performance data
to justify selection of one over the other. Of course, the
mainframe supplier can forcibly persuade adoption of one
model over the other, even without offering convincing
performance data, by simply indicating that the newer
product will receive all future support and that the former
one will be essentially dropped from the product line.
Communications Processors from the User's
Point of View
In the October 1980 supplements to both DATAPRO 70
and DATAPRO REPORTS ON DATA COMMUNICA TlONS, we published a Reader Survey Form on
Communications Controllers/ Processors.
By our editorial cut-off date of December 5, 1980, we had
received a total of replies from 192 users. Since a number
of these users provided ratings on more than one model of
communications processor, 262 usable responses were
generated, representing 377 communications processors.
Both the number of responses from communications
processor users and the number of processors represented
were almost exactly the same as in our previous survey
conducted in January 1980.
The content of these responses is tabulated in the accompanying table.
In an attempt to identify how communications processors
were being used. we asked the users to check one or more
usages in a list of five: front-end. stand alone or message
switching node. remote concentrator. terminal controller,
and other. The purpose was to determine the level of
sophistication among users in the use of communications
processors. The results are summarized below, but be sure
to read the notes following the presentation.
Percent of
Processor usage
Front-end
Stand-alone or message switching node
Remote concentrator
Terminal controller
Other
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Responses
94%
3
3
II
4
FEBRUARY 1981
t>
C13-010-109
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
USERS' RATINGS OF COMMUNICATIONS PROCESSORS (Continued)
User Ratings*
Promptness of
Maintenance
Hardware
Reliability
WA
E
G
3.6
F P
WA
E
G
F P
Manufacturer's
Software
Quality of
Maintenance
WA
E
G
F P
3.0
1
2
3
3
0
3
1
1
2
0
0
0
4.0
0
2
2
3
1
4
Manufacturer's
Technical Support
WA
E
G
F P
0
0
0
2.2
2.3
2.3
0
0
0
1
1
2
4
2
6
0
0
0
2
3
5
0
0
0
1.8
2.2
2.0
0
1
1
1
0
1
1
4
5
2
1
3
WA
E
G F P
3.4
3.6
2
3
5
3
0
3
0
0
0
0
0
0
2.8
2.8
2.8
1
2
3
1
1
2
Burroughs B 874
Burroughs, other models
Slbtotals
4.0
3.8
3
3
6
2
0
2
0
0
0
0
0
0
3.2
3.7
3.4
1
2
3
4
1
5
0
0
0
0
0
0
CCI CC-80 & CC-40
CCI CC-8
Subtotals
3.3
3.5
3.4
2
4
6
1
1
2
1
1
2
0
0
0
2.8
3.3
3.1
2
3
5
0
2
2
1
1
2
1
0
1
2.5
3.3
3.0
1
3
4
DEC, all models
3.7
2
1
0
0
2.7
1
0
2
0
3.3
3
2
1
0
2.8
2
1
3
0
2.2
1
0
4
1
Honeywell Datanet 355
Honeywell Datanet 6632
Honeywell, other models
Subtotals
3.7
3.7
2
2
0
4
1
1
4
6
0
0
0
0
0
0
0
0
3.3
3.3
3.3
3.3
1
2
1
4
2
0
3
5
0
1
0
I
0
0
0
0
3.3
3.3
3.3
3.3
1
2
1
4
2
0
3
5
0
1
0
1
0
0
0
0
3.0
2.0
0
0
1
I
3
1
3
7
0
1
0
I
0
1
0
1
3.0
0
1
0
1
3
0
0
3
0
1
4
5
0
1
0
I
I
19
0
4
60 25
I
0
1
2
2.3
2.8
3.0
1
3
28
32
0 1
16 4
47 16
63 21
1
1
3
5
0
1
1
2
0
2
7
3
10
3
0
3
2
0
2
15 8
15 4
6 1
2 '1
38 14
0
0
0
0
0
3.0
2.7
2.5
2.7
2.8
12
5
2
0
19
9 13
7 7
3 6
2 1
21 27
0
2
1
0
3
3.0
3.4
3.0
3.3
3.1
3.3
2.8
2.3
2.0
2.4
IBM 2701
IBM 3704
IBM 3705
Subtotals
3.7
3.7
3.7
1
19
68
88
1
5
21
27
1
2
2
5
0
3
0
0
2.7
3.3
3.5
3.4
1
10
46
57
1
15
39
55
0
1
4
5
1
0
1
2
2.7
3.1
3.4
3.3
I
8
41
50
1
15
49
65
0
2
1
3
1
1
1
3
Memorex 1270
Memorex 1380
Slbtotals
3.6
3.3
3.6
10
1
11
7
2
9
0
0
0
0
0
0
3.8
2.3
5
0
5
8
1
9
3
2
5
0
0
0
3.1
2.7
2
0
2
13
2
15
1
I
2
0
0
0
2.7
2.7
2.7
2
0
2
NCR 3650
NCR 3670
NCR 3690
NCR, other models
Subtotals
3.8
3.5
2.6
3.7
3.6
27
12
4
2
45
7
7
6
1
21
0
2
2
0
4
0
0
0
0
0
3.5
3.3
13
12
10
2
37
I
I
0
3
0
0
0
0
0
3.4
3.3
3.3
17
7
1
1
26
3.3
3.2
16
4
1
1
22
12
13
10
2
37
3
2
1
0
6
0
1
0
0
1
3.1
2.9
3.3
2.7
3.1
11
2
5
0
18
Periphonics T-Comm 7
3.7
2
1
0
0
3.3
I
2
0
0
3.3
1
2
0
0
2.7
0
2
1
0
2.0
0
1
2
0
Sperry Univac, all models
3.2
3
I
0
1
3.4
3
I
I
0
3.2
2
2
1
0
2.5
1
1
1
1
2.8
1
2
2
0
All others
3.5
6
6
0
0
3.2
6
2
2
1
3.1
5
3
2
1
2.9
2
4
3
0
2.8
3
3
3
1
TOTAL
3.6
173
76 11
1
3.3
1 II 11824
4
3.2
94 136 21
5
3.0
64 12452
6
2.8
3.0
3.0
i
3.0
3.0
3.0
2.7
3.0
3.3
4021
3
2
5
3.0
3.0
2.6
3.0
2.7
1
5
20
26
2
0
2
53 107 76 15
'User ratings report the number of users responding Excellent (E), Good (G), Fair (F), and Poor (P)for each category. The weighted averages (WA) were
calculated by weighting the four ratings on a 4, 3, 2, I baSis.
1:> Because the percentages total over 100 percent, it is
obvious that some users reported more than one usage. In
most cases, it appeared that mUltiple units were being used
in different fashions. For example, one user of two
processors might have indicated that one was employed as
a front-end, while the other performed as a remote
concentrator.
Within the category of front-end usage, we ·asked the users
to indicate the type of control software being used, with
these results:
Front-end Software
270X Emulation
NCP Mode
Other
Percent
of IBM
Users
Percent
of non-IBM
Users
63o/c
29o/c
36
9
45
---
8
Among the I BM users, two distinct patterns of usage were
indicated. Those using the IBM 3704 as a front-end
processor indicated that their usage was exclusively 270X
emulation. Of the 3705 users, 57% were using 270X
FEBRUARY 1981
emulation software, 47% were using IBM's Network
Control Program, and 12% were using other front-end
processing software.
While it is apparent that many users are still not making
use of the full power of front-end processors. it would
appear that this percentage is dwindling. It is too early to
determine the impact of distributed systems such as thc
IBM 8100. but Datapro believes that the increased integration of computer systems can only result in increased
network and communications sophistication and
efficiency.
We also asked these users whether their communications
processors accessed more than one host computer. Of
these users, 34% answered affirmatively and reported an
average of 2.3 host computers per system.
When questioned as to which protocol(s) were being
handled by their communications processors, these users
indicated usage of the following line disciplines:
1:>
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
\
C13-010-110
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
t>-
Percent of
Users
Protocol
Asynchronous
Bisynchronous (including IBM SSC)
IBM SDLC
X.25 Packet-Level
Other
5611i
87
19
I
18
The host computer or computers were identified on
virtually all 262 responses. A total of 300 computers were
mentioned. The -overall distribution of host computer
models revealed the following pattern:
Percent of
Users
Host Computer Model
13CJi
IBM 370/115 through 370/148
IBM 370(155 & Larger
IBM 303X
IBM 4341
Other IBM
Amdahl
Burroughs
National Advanced Systems
Honeywell
Univac
All others
27
32
3
6
13
3
5
4
2
5
The survey form also asked the users to identify areas of
major difficulty. These users' assessments are summarized
below:
Percent of
Responses
Reporting
M ~or difficulty
Communications processor software
Host system software
Throughput
Communications lines
• Modems
Terminals
System expansion (installing more lines)
27o/r
14
5
22
9
8
18
All of the actively marketed equipment known to Datapro
that satisfies the qualifying criteria is represented. Any
omission is because the product is no longer marketed or is
unknown to us.
The information presented on each communications processor in the accompanying charts serves not only to
describe the basic characteristics of the equipment, but
also assists in defining physical and throughput limitations. With one exception, all non-economic characteristics reduce themselves to one consideration: the throughput capabilities of the equipment relative to the specific
systems requirements. The exception is where the physical
attachment limitations are exceeded before the processing
capabilities are fully used.
For example, the number of high speed communications
lines that are physically attachable to a processor usually
exceeds the throughput capabilities. For that reason, most
vendors submitted a smaller value for the number of lines
attachable at the higher speeds than the equipment could
physically accommodate. The numbers more accurately
describe the outer limits of the processor's throughput
limitations than the physical limitations. All ofthe vendors
were concerned that readers realize that the line mix and
the resource mix could radically alter the number of lines
that could be supported, physical port availability
notwithstanding. Datapro was most impressed with the
responsible attitude universally exhibited, and we are very
optimistic that better ways of expressing throughput
capabilities will develop through the combined efforts of
the suppliers of communications processors and Datapro.
Some of the items indicated in the accompanying charts
are self-evident; others offer information of a subtle
nature. The following discussion highlights some of the
subtleties.
Comparison Charts
A catalogue of commercially available communications
processors along with the basic characteristics is presented
on the following pages.
A prospective buyer can easily scan the charts to determine
the scope of the options available for a given set of
requirements. The proper use of the charts will produce a
list of vendors and equipment that merit detailed study. It
is only from a detailed study of the equipment that an
advantageous price/ performance selection can be made
for a given systems requirement. It would be a misuse of
the charts to eliminate a processor from consideration on
the basis of comparing characteristics finely without
checking to see if the architecture possesses a feature that
overcomes a seemingly small disadvantage.
To have been included in the charts, a processor must have
had appropriate hardware and software to function either
as a front"end processor, as a remote concentrator, or as a
free-standing communications processor. Processors
designed to perform only message switching of voice grade
lines were deemed not to meet the criteria for inclusion.
Network Arrangements Supported
Most of the equipment listed herein, when operating as a
front-end, is restricted to supporting the host computer
systems of specific mainframe manufacturers. However,
some vendors include in their product lines front ends that
can be customized; such equipment is well represented in
the charts. Not included is the myriad of older mainframes
that have been fully written-off from an accounting
standpoint and, therefore, can be offered at low enough
prices to justify tailoring and' dedicating the overqualified
equipment to function as a front-end.
From a network arrangement standpoint, the number of
direct connections a front-end can support to one host and
the number of hosts a front-end can support become an
important consideration, especially for fallback considerations. Usually, a small number represents a special
direct connection. A high number indicates that the
connection is via a regular communications line port and
does not mean that the vendor is suggesting that so many
connections to one or more host is a designed capability. I>
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
FEBRUARY 1981
C13-010-111
Communications ProcessorsManagement Perspective and Equipment Specifications
I »
\!_ (
When the number of pollable stations on one line is "I,"
the systcm, as standard, supports only point-to-point
terminal arrangements. When the communications processor functions as a remote concentrator, the number of
hostj concentrator connections is also a consideration
from a network standpoint. Again, the number of connections permitted is primarily an indication of whether a
special interface or a regular communications line
interface is use~.
As thc data communications industry continues to make
strides towards standardization, the network architecture
that a free-standing communications processor supports
will take on more and more importance. (The architecture
of a front-end must conform to the host's architecture.)
Since the prime purpose in burdening communications
lines around the world with data is to either retrieve
information or to add to the store of information, the
nature of the data base system supported should not be
overlooked. Actually it represents the "end" for which one
selects a "( communications processor) means." The name
of any data base system supported is listed for each
communications processor. Of course, a buyer may be
already committed to a file maintenance or data base
system and not be interested in this type of support.
As would be expected, the tasks performed by each of the
operating systems supplied with the hardware will vary.
The name of the operating system is noted so that the
reader will know what to look for in detailed reports on
such software offerings.
Properly depicting communications line capacity is the
most difficult and the most controversial entry in the
accompanying charts. It would be very easy to utilize a full
page to describe the line capacity capabilities of just one
processor. As a reasonable alternative, Datapro decided to
show the number of half-duplex lines that can be
physically attached to the processor presuming all lines
were operating within a given speed range. Three ranges
were chosen to represent low, medjum, and high line
speeds. The ranges chosen were: up to 1800 bps, 2000 to
9600 bps, and over 9600 bps. The number of low speed
lines usually represents the physical and throughput
limitation for asynchronous lines. Generally, the medium
and high speed lines represent the outer limits of the
throughput capabilities. The effect of using full-duplex
lines and an estimate of raw throughput capacity are also
.
indicated.
The terminal protocols supported by the processors are
listed. Even though the protocols supported are mostly
dependent upon thc marketing philosophy of the vendors,
the large number of vendors supporting the standardized
bit-oriented protocols is an indication of things to come.
Processor Characteristics
The communications processor's internal characteristics
give a general "feeling" for the equipment's throughput
FEBRUARY 1981
Processors
capabilities. Hard-wired equipment and some programmable processors will receive a "No" to the question: "Is
the processor microprogram mabie by the manufacturer?"
A "yes" means that the processor has firmware, or
microcoded, stored logic. If the processor is program. mabie by the user, one can expeCt the capability for user
implementation of specific system requirements not supported by vendor software, including applicationsoriented functions. Main memory cycle time, main
memory word size, and main memory storage capacity
offer a very general "feel" for throughput speed possibilities. However, sophisticated internal architecture may·
enable the processor to be many times faster than another
processor with the same cycle time and word size. That is
another reason why we emphasize that a detailed analysis
is necessary, once the initial selection is made from the
charts.
The manner of data transfer between memory and communications lines, memory and mass storage, and memory
and other supported peripherals becomes critical as
volume requirements rise and/or response times are
reduced. For high-speed, high-volume transmissions, Direct Memory Access transfers instead of character interrupt transfers become mandatory for reasonable throughput rates.
The "Turnkey' systems" entry informs potential users
whether or not the vendor is willing to provide a complete
system. including .all applications software.
Pricing and Availability
The prices depicted in the charts represent a range of
typical configurations. The magnitude of the dollars gives
a ball-park indication of the expansion capabilities of the
equipment and should not be used to determine
pricej performance. Only a detailed price for a configuration satisfying specific requirements would givc such
an indication.
The absence of an entry for the monthly rental price
indicates that the vendor offers his cquipment on a purchase-only basis.
The charge for the processor's communications opcrating
software is given, when separately priced.
The date of first delivery is thc date of the first production
delivery.
With 91 communications proccssors to choose from, there
should be an offering for every need, whether the network
is a fully distributed network or a classic master j slave
network.
Syppliers
Listed below for your convenience in obtaining additional
information are the full names and addresses of the 42
suppliers whose 91 products are summarized in the
following charts.
t> .
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13·010·112
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
1:> Action
Communications Systems, Inc., 4401 Beltwood Parkway
South, Dallas, Texas 75234. Telephone (214) 386-3500.
Industrial Computer Controls, Inc., 196 Broadway. Cambridge.
Massachusetts 02139. Telephone (617) 864-0283.
Amdahl Corporation, 1250 E. Arques Avenue. Sunnyvale.
California 94086. Telephone (408) 746-6000.
Intelligent Terminals, Inc., One First Street. Los Altos. California
94022. Telephone (415) 948-7033.
ASI Teleprocessing Inc., 10 I Morse Street. Watertown.
Massachusetts 02172. Telephone (617) 923·1850.
ITT Courier Terminal Systems, Inc., 15 W. 14th Street. Tempe.
Arizona 85281. Telephone (602) 894-7000.
Austron Data Systems, Inc., 2007 Kramer Lane, Austin. Texas
78758. Telephone (512) 836·3523.
Lemcom Systems, Inc., 2104 W. Peoria Ave .. Phoenix. Arizona
85029. Telephone (602) 944-1543.
BBN Computer, 33 Moulton St.. Cambridge. Massachusetts 02238.
Telephone (617) 491·1065.
Memorex Corporation, Communications Group, 18922 Forge
Drive. Cupertino. California 95014. Telephone (408) 996-9000.
Braegen Corporation, 20740 Valley Green Drive. Cupertino. Cali·
fornia 95014. Telephone (408) 255-4200.
Modular Computer Systems, Inc., 1650 W. McNab Road. Fort
Lauderdale. Florida 33310. Telephone (305) 974-1380.
Burroughs Corporation, Burroughs Place. Detroit. Michigan 48232.
Telephone (313) 972-7000.
NCR Corporation, 1700 S. Patterson Blvd .. Dayton. Ohio 45479.
Telephone (513) 449-2000.
Cencom Systems, Inc., see Centennial Computer Products.
NCR Comten, Inc., 2700 Snelling Avenue North. St. Paul.
Minnesota 55113. Telephone (612) 638-7777.
Centennial Computer Products (formerly CENCOM Systems,
Inc.), 6100 Executive Boulevard, Rockville. Maryland 20852.
Telephone (301) 984-9120.
Chi Corporation, 11000 Cedar Avenue. Cleveland. Ohio 44106.
Telephone (216) 229-6400.
Codex Corporation, 20 Cabot Blvd .. Mansfield. Massachusetts
02048. Telephone (617) 364-2000.
Computer Communications, Inc., 2610 Columbia Street. Torrance.
California 90503. Telephone (213) 320-9101.
Comten, Inc.: see NCR Comten, Inc.
Control Data Corporation, 8100 34th Avenue South, P.O. Box O.
Minneapolis. Minnesota 55440. Telephone (612) 853-8100.
Datastream Communications, Inc., 555 Ellis Street. Mountain View.
California 94043. Telephone (415) 965-9911.
Digital Communications Associates, Inc., 303 Research Drivel
Atlanta. Norcross. Georgia 30092. Telephone (404) 448-1400.
Digital Communications Corp., 11717 Exploration Lane. German·
town. Maryland 20767. Telephone (301) 428-5500.
DPF Incorporated, 141 Central Park Avenue South. Hartsdale.
New York 10530. Telephone (9~4) 428-5000.
General Automation, 1055 S. East Street. Anaheim. California
92805. Telephone (714) 778-4800.
GTE Telenet Communications Corporation, 8229 Boone Boulevard.
Vienna. Virginia 22180. Telephone (703) 442-1000.
Honeywell Information Systems, Inc., 200 Smith Street. Waltham.
Massachusetts 02154. Telephone (617) 890-8400.
North American Philips Corporation, Communications Systems
Division, 55 Knightsbridge Road. Piscataway. New Jersey 08854.
Telephone (20 I) 457-0400.
Paradyne Corporation, 8550 Ulmerton Rd .• Largo. Florida 33541.
Telephone (813) 536-4771.
Periphonics Corporation, 75 Orville Drive. Bohemia. New York
11716. Telephone (516) 567-1000.
Raytheon Data Systems Company, Minicomputer /Communications Operation, 360 Forbes Boulevard, Mansfield, Massachusetts
02048. Telephone (617) 339-5731.
Rockwell International, Collins Communication Switching Systems
Division, P.O. Box 10462. Dallas. Texas 75207. Telephone (2 14) 9962336.
Sperry Univac (division of Sperry Rand Corporation), P.O. Box 500.
Blue Bell. Pennsylvania 19424. Telephone (215) 542-4011.
Systems Research, Inc., 2400 Science Parkway. P.O. Box 328.
Okemos. Michigan 48864. Telephone (517) 349-0200.
Tandem Computers, Inc., 19333 Vallco Parkway. Cupertino. California 95014. Telephone (408) 725-6000.
Telcon Industries, Inc., 1401 Northwest 69th Street, Fort Lauderda Ie. Florida 33309. Telephone (305) 971-2250.
Telefile Computer Products, Inc., 17131 Daimler St .. Irvine. California 92714. Telephone (714) 557-6660.
TRAN Telecommunications Corporation, 2500 Walnut Avenue.
Marina Del Rey. California 90291. Telephone (213) 822·3202.
IBM Corporation, Data Processing Division, 1133 Westchester
Avenue. White Plains. New York 10604. Telephone (914) 696-1900.
TRT Data Products, Norfield Communications Division, 3 Depot
Place. E. Norwalk. Connecticut 06855. Telephone (203) 853-2777.
ICOT Corporation (division of Microform Data Systems, Inc.),
830 Maude Avenue, Mountain View, California 94043. Telephone (800) 227-8068.
Westinghouse Canada Incorporated, Electronic Systems Division,
P.O. Box 5009. Burlington. Ontario. Canada L7R 4B3. Telephone
(416) 528-8811.0
\~._/
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
FEBRUARY 1981
Communications ProcessorsManagement Perspective and Equipment Specifications
Action
Communications
Systems
TELECONTROLLER
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maxim um no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture complia nce
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Communications line capacity
No. of half -duplex lines physically anachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
IBM, DEC,
Burroughs
IBM, DEC,
Burroughs
Stand-alone
Yes
Yes
1
32 per line
Yes
64
64
32
Yes
No
No
ASI DOS
Yes
RT-11
No
64
Most major
vendors
Amdahl 470, 580
and compatibles
Yes
16
1
51 2 per system
Yes
16
16
32
Yes
No
No
Yes
Yes
Yes
4
4
Software-dep.
Yes
1
1
Device-dependent
No
-
64
64
64
9600
None
352
352
45+
56K
Capacity halved
2500
Yes
Yes
No
No
No
8A1, 83B3, SITA.
ARINC, TWX,
TELEX, Dial-in/out
No
ASI
Teleprocessing
Store Data
ASI
Teleprocessing
Network Node
ASI
Teleprocessing
Front End
Amdahl
4705
C13-010-113
Processors
-
1
32 per line
No
-
Yes
-
ASIDOS
Yes
-
-
-
Yes
-
64
64
64
56K
None
56K
None
16
16
16
9600
None
See Comments
50K bytes
50K bytes
-
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
Yes
Yes
No
Yes
-
-
-
Yes
No
0.6
16
65K words
No
Yes
0.145
18
512K bytes
No
Yes
1
16
256K bytes
No
Yes
1
16
256K bytes
No
No
1
16
256K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Interrupt
DMA
DMA
Both
-
DMA. interrupt
DMA
DMA. interrupt
DMA, interrupt
DMA
DMA. interrupt
DMA. interrupt
DMA
DMA. interrupt
Back-up and diagnostic peripherals supported
Mag. tape
Diskette
Disk, diskette
Disk, diskette
Disk, diskette,
mag. tape
Communications operating software:
Availability
Generated by
Included in price
Comm. processor
See Comments
Host
Included in price
Comm. processor
Incl uded in price
Comm. processor
Incl uded in price
Comm. processor
Mditional software supported
None
See Comments
Assembler, utilities
Assembler, utilities
Assembler, utilities
Turnkey systems available
Yes
No
Yes
Yes
Yes
$165,000 to
$500,000
-
$50,000 to
$350.000
$1,800 to $13.000
$70,000 to
$150,000
$50,000 to
$100,000
$75,000 to
$150.000
-
-
-
-
See Comments
See Comments
-
-
-
1971
87
Action or third
party
Telecontroller is a
store-and-forward
message switching
system with frontend capability
11/80
2175
Amdahl
20
ASI/IBM/DEC
2/76
10
ASI/IBM/DEC
10
ASI/DEC
Packet switch
application -tra nsparent communiclltions; full turnkey
system
Packet switch
application-tra nsparent communicalions; full turnkey
system
Estimated processor throughput, chars.lsec.
Terminal protocols supported:
ASCII, Async. ITeletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X25-Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable bY'manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes.
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-()ne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
FEBRUARY 1981
64
-
-
-
Software-coinpatible with IBM
3705-11. with up
to 1.8 times the
3705'5 throughput capacity;
public domain
software distributed and mainl.
by Amdahl
No
-
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
NO
-
2176
Multi-terminal
interfacing for IBM.
NCR. DTS, etc.; full
turnkey system
C13-010-114
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
r
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forvvard. message switching processor
Austron
8911
Austron
8800
Austron
8500
MANUFACTURER AND MODEL
IBM 5/360. S/370.
4300 Series, 303)(.
& channel-compat.
equivalents'
IBM S/360. S/370.
4300 Series, 303)(.
& channel-compat.
equivalents
IBM S/360. S/370.
4300 Series, 303)(.
& channel-compat.
equivalents
Yes
1
1
256
No
Yes
1
1
256
No
Yes
2 or more
2 or more
256
No
No
-
-
-
No
Yes
X.25
-
-
-
-
No
No
Stand-alone
Yes
Communications line capacity
No. of half-<.
S/370, 303><'
43XX
43XX
Yes
1
1
Device-depend.
Yes
1
1
Device-depend.
No
Yes
4
4
Device-depend.
Yes
1
1
Device-depend.
No
~
-No
-No
Communications line capacity .
.
No. of half-duplex linesphysicalfy llttaChilbie to
processor if all are operated atthelisled speeds:
.
. .
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported; bits per second
Effect on line capacity, if all lines are full-duplex
32
32
32
134.5K
caJil!city halved
352
352
32
230.4K
Estimated processor throughput, chars.lsac.
-
-
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BOLe)
IBM SDLC
X 25--Packet level
Other
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
No
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Mai n memory storage capacity, words or bytes
Most manufacturers via serial
line interface
No
.-
-
-
-
Yes
13
13
15
Yes
Variable
No
No
No
Yes
4
4
15
Yes
Variable
No
No
No
35
13
9
4
-
No
No
-
Yes
4
4
15
Yes
Variable
No
No
No
5
5
-9.6K
9.6K
None
-
-
-
Yes
Yes
Yes
Yes
Yes
PARS, SITA,
Pl024, Ul001
2001400
Yes
Yes
Yes
Yes
Yes
PARS, SITA,
Pl024, Ul001
200/400
Yes
Yes
Yes
Yes
Yes
PARS, SITA,
Pl024, Ul001
200/400
Yes
Yes
1.0
18
512K bytes
Yes
No
.805 usec
8
48K + 14K/line
Yes.
No
.805 usec
8
48K + 14K/line
Yes
No
.805 usec
8
16K + 14K/line
halved
-
9.6K
None
--
64K bytes
-
Interrupt
DMA
DMA
DMA
-
-
-
-
Back-up and diagnostic peripherals supported
-
-
None
None
None
COmmunications operating software:
Availability
Generated by
Separately priced
Host
Separately priced
Host
-
-
-
Additional .software supported
-
-
None
None
None
Turnkey systems available
Available
Available
Yes
Yes
Yes
$22,100 to
$24.455
$712 to $895
$38,230 to
$122,040
$1,205 to
$4,785
$10,000 to
$30,000
$6,000 to
$9,000
Monthly rental (2-yr. lease,iricluding maint"range)
Communications operating software-one-tirne charge
COmmunications operating software----monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
v
'"
No
Yes
Data transfer betvlleen memory and:
Communications lines
Mass Storage
Other peripherals
PRICING AND AVAILABIUlY
Purchase price (system range)
.
-
None
capa~ity
I
Interrupt
Included
-
-
5/73
8/76
-1979
IBM
70
ICOT
Option-depend.
-IBM
$132
-
Prices shown are
for basic controller
only
Multimicroprocessor confi9 uration provides for 1
processor per syn-.
chronous line, .or
1 processor per
up to 16 asynchronous lines
Interrupt
Interrupt
Included
Included
$3,900
-
-
-
-
-
-
1/81
1980
-
-
ICOT
ICOT
Multimicroprocessor config uration provides for 1
processor per synchronous line, or
1 processor per
up to 16 asynchronous lines
Multimicroprocessor configuration providesfbr.l
processor per.
line
~-
'I"--
~
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
,
FEBRUARY 1981
C13·010·123
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
\
Industrial
Computer
Controls. Inc.
CA12
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM, Burroughs,
asynchronous
NETWORK ARRANGEMENTS SUIi'PORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Fulkapacity data base system
Operating system
As a store-and-forward message switching processor
.- ,
Yes
8
0
32
Yes
29
8
32
Yes
SNA
Intelli~ent
Intellirs:nt
Termina s. Inc.
ADCAP 200·1
Termina s. Inc.
ADCAP 100·1
Almost any mainframe except Burroughs
No
-
Yes
Variable
1
4096
No
Almost any mainframe, except Burroughs
IBM S/360,
S/370, 3000,
4300, & plug compatibles
Yes
1
1
255
No
-
Yes
Variable
2 per 8 input ports
4096
No
l.emcom
Systems. Inc.
CMC·4
ITT Courier
vn.C
No
-
No
IBM S/360, S/370,
303X,43oo,and
compatible
Yes
1
2
Unrestricted
8y RPO
-
No
-
-
-
-
-
-
No
Yes
Yes
No
No
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
15
1 to 12
2
19.2K
capacity halved
4 per output cha n.
4 per output cha n.
4 per output cha n.
19.2K bps
None
8 per output chan.
8 per output chan.
8 per output chan.
56K bps
None
4
4
4
9.6K
-
4
4
3
56K
None
Estimated processor throughput, chars.lsec.
8K
38.4K
153.6K
-
7K
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM 8SC
ADCCP/HDLC (UDLC, 8DLC)
IBM SDLC
X25-Packet level
Other
Yes
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
No
Yes
-
No
Yes
No
No
No
Yes
Yes
Future
Future
Future
-
-
Yes
No
.450
8
64K
Yes
No
200 nanoseconds
8
64K words
Yes
No
200 nanoseconds
8
48K words
Yes
No
Yes
No
0.5
8
401{
Both
DMA
DMA
DMA
DMA
DMA
DMA
-
-
Internal diagnostics
Internal diagnostics
Diskette
Console
-
-
/
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity. words or bytes
-
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
-
Back-up and diagnostic peripherals supported
-
Communications operating software:
Availability
Generated by
-
-
-
Incl uded in price
Incl uded in price
Comm. processor
-
Additional software supported
-
-
-
-
Turnkey systems available
Yes
Yes
Yes
Message broadcast,
line monitoring,
error logging, &
config. monitoring
Yes; see Comments
$4,300-$15,000
$7,200 to $25,000
$5,700 to $25,000
$7,900 to $26,1 50
$14,000 to
$20,000 .
Contact vendor
Inc I. in price
PRICING AND AVAILABILITY
Purchase price (system range)
Included in price
-
-
$400
-
$383 to $1,050
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
11179
-
7181
7176
150
ICCI
60
Intelligent Terminals
2
Intelligent Terminals
800
ITT Courier
COMMENTS
Extensive protocol
conversion capabilities
A protocol converter that converts
various protocols to
X.25 network protocols; limited
store-and-forward
capabilities; expa ndable ba ndwidth via multiple
processor architecture
A protocol converter that converts
various protocols til
X.25 network protocols; limited
store-and-forward
capabi lities; expandable bandwidth via multiple
processor architecture
A turnkey frontend processor system that can replace an IBM 370X
in a network of
3270-type 8SC
terminal devices;
the VTLC appears
to the host as a
3272 controller and
handles both remote
and local terminal
devices
Monthly rental (2-yr. lease, including main!., range)
FEBRUARY 1981
1179
-
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
•
REPRODUCTION PROHIBITED
Interrupt
-
-
-
3/77
225
User /third party
Microprocessordirected FEP. Compact and extremely
flexible. Front-end
polli ng, console support available. OEM
discounts available.
RPO's available for
a fee
C13-010-124
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Modular
Computer
Systems
Modcomp
3108
Lemcom
Systems. Inc.
CMC-32
IBM S/360, S/370,
303X, 4300, and
compatible
IBM S/360, S/370,
303X,43oo,and
compatible
IBM S/360, S/370,
303X, 43>0<. and
compatibles
Modcomp MCII126
& MCII/45
Modcomp Classic
7830
Yes
1
2
Unrestricted
8y RPO
Yes
1
2
Unrestricted
By RPO
Yes
4
8 (4 at a time)
Unrestricted
By RPO
Contact vendor
Contact vendor
Contact ve ndor
No
Yes
2
2
256
Yes
Applic.-dependent
Applic.-dependent
User-programmable
Yes
X.25
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Modular
Computer
Systems
Modcomp
MCII/CP2
Lemcom
Systems. Inc.
CMC-8
Memorex
1380
No
No
No
MAX III/MAXNET III
Yes
Yes
4
4
256
Yes, with CPU
Applic.-dependent
Applic.-dependent
User-programmable
Yes, with CPU
X.25
TSX,INFIN.
MAX III/IV, MAXNET
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
8
8
6
56K
None
32
32
24
56K
None
112 to 216
64
40
230.4K
None
256
256 to 166
Applic. -dependent
250K
None
256
256 to 166
Applic. -dependent
250K
None
Estimated processor throughput, chars./sec.
14K
56K
-
200K
2001<
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X25-Packet level
Other
Yes
Yes
Future
Future
Future
Yes
Yes
Future
Future
Future
Yes
Yes
No
No
No
Yes
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
-
-
-
-
-
Yes
No
0.5
8
80K
Yes
No
0.5
8
320K
No
Yes
0.54
16
64K
Umited
No
0.8-1.0
16
128K bytes
Yes
No
0.125
16/32
2M bytes
PROCESSOR CHARACTERISTICS
Microprogrammableby manufacturer
Programmable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
-
No
-
-
No
-
-
-
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
-
-
-
DMA. interrupt
DMA
DMI
DMA
DMA
DMI, interrupt
DMA, interrupt
DMA. interrupt
Back-up and diagnostic peripherals supported
Console
Console
None
Disk, mag. tape,
printers
Disk, mag. tape,
printers
Communications operating software:
Availability
Generated by
-
-
-
Some separ. priced
Host
Separately priced
Host
Additional software supported
-
-
MASCOT and other
host-resident utilities
Macro assembler,
FORTRAN, utilities
Separately priced
Host &comm.
processor
See Comments
Turnkey systems ava ilable
-
-
No
No
No
$16,000 to
$30,000
Contact vendor
$20,000 to
$60,000
Contact vendor
Varies
$27,000
$30,850
Varies
-
-
Communications operating software-<>ne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
3179
30
User/third party
-
-
11/80
3
User /third party
Contact ve ndor
Contact vendor
1976
150
Memorex
-
Modcomp
Modcomp
COMMENTS
Microprocessordirected FEP. Compact and extremeIy flexible. Frontend polling, console support avail.
OEM discounts,
RPO's available
Microprocessor directed FEP. Compact and extremeIy flexible. Frontend polling console
support available.
OEM discounts available. RPO's available
for a fee
Interrupt
-
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!.. range)
-
Interrupt
-
Custom software
extensions are available for a fee, from
Memorex Systems
Engineering Services
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
-
Additional softvva re supported
includes FORTRAN
IV, 77 CORAL 66,
COBOL. PASCAL,
& macro assembier utilities
FEBRUARY 1981
i
-
C13-010-125
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
Modular
Computer
Systems
Modcomp
3109
/
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Ma nufacturers and Models
".
NCR Comten, Inc NCR Comten, Inc NCR Comten, Inc.
COMTEN
COMTEN
COMTEN
3670
3650
3690
Modcomp Classic
786X, 7870
NCR Century,
Criterion, & 8XX5
Systems
IBM S/360, S/370,
3033, & 43XX; CDC
Omega; Amdahl;
custom
IBM S/360, S/370,
3033, & 43XX; CDC
Omega; Amdahl;
custom
IBM S/360, S/370,
3033, & 43XX: CDC
Omega; Amdahl;
custom
Yes
4
4
256
Yes, with CPU
Applic. -dependent
Applic.-dependent
User-programmable
Yes, with CPU
X.25
TSX,INFIN.
MAX III/N, MAXNET
Yes
Yes
2
2
Device-dependent
Yes
Unrestricted
Unrestricted
Device-dependent
Yes
NCR/CNA
Yes
2
2
4096 per system
Yes
15
Unlimited
32
Yes
SNA. CNA
Yes
4
4
1 2,288 per system
Yes
15
Unlimited
32
Yes
SNA. CNA
-
-
Yes
8
8
16,384 per system
Yes
15
Unlimited
32
Yes
SNA,CNA
TOX
No
See Comments
No
See Comments
No
See comments
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
256
256 to 166
Applic. -dependent
250K
None
99
52 to 99
10 at 56K bps
56K
None
128
128
32 to 128
230.4K
None
384
384
96 to 384
230.4K
None
512
512
128to 512
230.4K
None
Estimated processor throughput, chars.lsec.
200K
40K
lOOK (HASP)
lOOK (HASP)
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X25-Packet level
Other
Yes
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
Yes,
8383
Yes
Yes
Yes
Yes
Yes,
83B3
Yes
Yes
Yes
Yes
Yes,
83B3
Yes
No
0.125
16/32
4M bytes
Yes
No
0.65
16
256K bytes
No
Yes
0.65
16 pi us parity
512K bytes
No
Yes
0.65
16 plus parity
512K bytes
Yes
Yes
0.52
64 plus parity
4096K bytes
DM!. interrupt
DMA, interrupt
DMA, interrupt
-
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
Disk, mag. tape,
printers
cassette
Diskette, cassette
cassette
Diskette
Separately priced
Host
Separately priced
Hostlcomm. proc.
Separately priced
Hostlcomm. proc.
Separately priced
Host/comm. proc.
Additional software supported
Separately priced
Host &comm.
processor
See Comments
-
NDP, CODEL
Assembler
NDP, CODEL
Assembler
NDP, CODEL
Assembler
Turnkey systems available
No
Yes
Yes
Yes
Yes
$46,310
$41,720 to
$100,400
$1,205 & up
$45;000 to
$125,000
$1,500 to $4,150
$90,000 to
$350,000
$3,000 to $11,600
$130,000 to
$550,000
$4,300 to $18,000
$15,000
$417 & up
1976
See comments
See comments
3/75
Over 1100
NCR Comten
See comments
See comments
3/72
Over 300
NCR Comten
See comments
See comments
Communications
processor operating systems include
EP, NCP, CNS,
DSS, & ACF/NCP;
all software is
licensed on a
monthly basis
Communications
processor operating systems include
EP, NCP, CNS,
DSS, & ACF/NCP;
all software is
licensed on a
monthly basis
Communications
processor operating systems include
EP, NCP, CNS,
DSS, & CTAM; &
ACF/NCP; all software is licensed
on a monthly basis
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
(
NCR
721-11
-
-
300K (HASP)
.
/"
PROCESSOR CHARACTERISTlCS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Back-up and diagnostic peripherals supported
Communications operating software:
Availability
Generated by
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rl1ntal (2-yr. lease, including main!., range)
Communications operating software---one-time charge
Communications operating software-monthly charge
Date of first deUvery
Number installed to date
Serviced by
COMMENTS
(~
./
FEBRUARY 1981
-.
-
-
Modcomp
Additiona I softwa ra supported
includes FORTRAN
IV, 77 CORAL 66,
COBOL. PASCAL.
& macro assembier utilities
-
NCR
© 1981 DATAPRO RESEARCH CORPORATION, DElRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
6n8
Over 400
NCR Comten
C13-010-126
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
North American
Philips Corp.,
Comm. Sys. Diy.
DSX40
North American
Philips Corp.,
Comm. Sys. Diy.
MARK III Series
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers end Models
IBM 5/370. custom
NEnNORK ARRANGEMENTS SUPPORTED
As a front-end
.
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-ettachable 10 front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Archi!ecture compliance
Full-capacity ~ta base system
Operating system
As a slOre ... nd-fonNll~ message switching processor
Yes
Applic. -dependent
Applic. -dependent
Applic.-dependent
Yes
Applic.-dependent
Applic.-dependent
Applic.-dependent
Yes
Philips
Philips
Philips
Yes
North American
Philips Corp.,
Comm. Sys. Diy.
MARC
Periphoni~
Paradyne
PIX· II
Corporation
T-Comm 7
Custom
Custom
IBM 5/360.
5/370. 4300. 303><'
and compatibles
IBM. NCR, Burroughs. Honeywell.
etc.
No
Yes
Applic.-dependent
Applic. -dependent
Applic.-dependent
Yes
Philips
Philips
Philips
Yes
Yes
See comments
See comments
Applic.-dependent
Yes
Applic.-dependent
Applic.-dependent
Applic.-dependent
Yes
Philips
Philips
Philips
Yes
Yes; see comments
1
1
64 (interrupt)
Yes
1
1
25
No
Yes
8
4
266/800
Yes
Host-dependent
8
256
Yes
fieri-comm. SNA. etc.
No
fieri-Comm
Yes-on RPQ basis
Applic.-dependent
Applic. -dependent
Applic.-dependent
19.2K; higher by RPQ
None
Applic.-dependent
Applic.-dependent
Applic.-dependent
19.2K; higher by RPQ
None
-
60
Applic.-dependent
3 (full-duplex)
56K
capacity halved
10to45
Up to 10
56K bytes
capacity halved
Estimated processor throughput, chars.lsec.
Applic. -dependent
Applic.-dependent
Applic.-dependent
19.2K; higher by RPQ
capac. halwd for
voice & wideband
Applic.-dependent
Applic. -dependent
Applic.-dependent
14K
Processor·
dependent
Terminal protocols suPpo~d:
ASCII. Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC. BDLC)
IBM SDLC
X 2!;)-Packet lewl
Other
Yes
RPQ
RPQ
RPQ
RPQ
RPQ
Yes
RPQ
RPQ
P,PQ
Yes
RPQ
Yes
RPQ
HDLC; RPQ others
RPQ
Yes
RPQ
Yes
RPQ
No
No
Yes
Yes
Yes
Yes
Yes
Audio Respon"
(93 line max.)
Communications line capacity
No. of half-duplex lines physically attachable 10
processor if all are operated at the listed speeds:
Up 10 1800 bps
2000 10 9600 bps
Owr 9600 bps
Highest line speed supported. bits per second
Effect on line capacity. if all lines are full-duplex
-
-
-
-
No
No
Paradyne version
of SDLC
/
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory c~1e time. usee.
Main memory word size. bits
Main memory storage capacity. words or bytes
Yes
Yes
0.7
36
1M bytes
Yes
Yes
1.0
8
320K bytes
Yes
Yes
1.0
8
208K bytes x NP;
see comments
Yes
No
No
0.4 to O.B
16
176K bytes
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
-DMA. interrupt
DMA. interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
None
Remote console.
diskette. mag. tape
Included in price
Incl uded in price
Host/comm. processor
Data Collection
(BANK-FROMHOME)
No
0.6
16
128K bytes
Da\8 transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Back-up and diagnostic peripherals supported
Disk. line printers.
mag. tape
Disk. floppy disk.
mag. tape
Disk. floppy disk.
mag. tape
Communications operating software:
Availability
Generated by
Included
Host/comm. proc.
Included
Host/comm. proc.
Included
Host/comm. proc.
-
AI;lditional software suppo~d
Special utilities
Special utilities
Special utilities
Special utilities
Turnkey systems available
Yes
Yes
Yes
Yes
Yes
Contact vendor
Contact vendor
Contact ve ndor
Contact vendor
$80.000
Contact vendor
Contact vendor
Contact vendor
Contact ve ndor
-
-
-
1967
Over 90
N. Am. Philips/CSD
1979
30
N. Am. Philips/CSD
1979
Over 30
N. Am. Philips.CSD
-
--
Owr 1300
Paradyne
-fieriphonics
Virtually off-shelf
for AFTN public
switching and Telex
applications; custom config. available
Also interfaces
with VDU's & word
processors; ha ndles
X25 Level 3
(Philips Level 4)
Custom configs.
include FAX. Teletex. peripheral controller; handles
X.25 Level 3
(Philips Level 4);
max. no. of host
supported/attachable & main memo
storage capacity
depends on no. of
procassors (NP)
configured
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. Ie;tse. including rnaint .. range)
Communications op8r1!ting software-one-time charge
Communications op8r1!ting software--rnonthly charge
Date of first deliwry
Number installed to date
Serviced by
COMMENTS
-
-
4176
& up
1971
PIX permits rElmote
peripherl! Is to
access host as if
loca lIy attached;
local PlX.is bytechannel connected
to host; remote PIX
is input to local .PIX
© 1981 DATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
FEBRUARY 1981
'--
r--
Communications ProcessorsManagement Perspective and Equipment Specifications
(
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NCR, Burroughs, IBM, NCR, Burroughs, IBM, Univac, and
compatible CPUs
HoneyWell, Univac,
oneywell, etc.
DEC, etc.
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
Estimated processor throughput, chars.lsec.
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X25-Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Back-up and diagnostic peripherals supported
Communications operating software:
Availability
Generated by
Additional software supported
Turnkey systems available
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
FEBRUARY 1981
Yes
8
4
256/800
Yes
Host-dependent
8
256
Yes
Peri-comm, SNA. etc.
Raytheon
Data Systems
Raynet IV8&V
Raytheon
Data Systems
Raynet I. II 8& III
~M,
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network ArChitecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
COMMENTS
Periphonics·
Corporation
T-COMM 80
Multi- Processor
Periphonics
Corporation
DTC-II
MANUFACTURER AND MODEL
No
IBM, Univac, and
compatible CPUs
C13-010-127
Processors
Rockwell
ln18rnational
Collins C-System
IBM 5/360, S/370,
303X; Uni~ac 11 OOaJ1l
No
Yes
-
Traffic-d~pend.
Peri-Comm
Yes-on RPQ basis
Yes
8 x NP
4x NP
BOO x NP
Yes
Host-dependent
8x NP
256
Yes
Peri-comm, SNA. etc.
No
Peri-Comm
Yes-on RPQ basis
25
10to 45
Up to 10
56K
Capacity halved
50
(10 to 45) x NP
Up to 10
56K
Capacity halved
47 per cpu
47 per cpu
Varies
56K
None
47
47
Varies
56K
Capacity ha lved
1024
512
256
56K
None
Processor[dependent
Processor-dependent
App/. dependent
App/. dependent
50t<
Yes
Yes
Yes
Yes
Yes
Audio Response
(25 line max.)
Yes
Yes
Yes
Yes
Yes
Audio Response
(NP x 100 lines) max.
Yes
Yes
Yes
Yes
PARS, Univac
Yes
Yes
Yes
Yes
No
PARS, Univac
Yes
Yes
Yes
Yes
Yes
Yes, including
most IBM
No
No
0.4 to 0.8
16
128K bytes
No
Yes
0.4 to 0.8
16
320K bytes x NP
Yes
Yes
0.7
16
256K bytes per cpu
Yes
Yes
0.7
16
256K bytes per cpu
No
Yes
0.9
32
2M !lytes
DMA, interrupt
OMA. interrupt
DMA. interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA
DMA
DMA, interrupt
DMA
DMA
DMA. interrupt
DMA, interrupt
DMA
DMA
Remote console,
jdiskette, mag. tap!!
Remote console,
diskett!!, mag. tape
Console, cassette,
printer
Disk, tape
Included in price
Host/comin. proc~ssor
Data Collection
(BANK-FROMHOME)
Included in price
Separately prioed
Host/comm. processo Comm. processor
Cassette, disk,
console, mag. tape,
printer
Sepa rately priced
Comm. processor
No
-
-
Yes
Unlimited
1 (R-I); 8 (R-II & III)
No limit
Yes
Yes
No
PeOS
No
Yes
Unlimited
8
No limit
Yes
Yes
Partial
PCOS
Std. (R-IV);
opt. (R-V)
No
8
Protocol-depend.
Yes
Interface-deP!3nc1.
Interface-depend.
Protocol-depend.
Yes
Most
No
COS
Yes
Includlld in price
Comm. processor
Utilities, diagnostic
and performa nee
aids
Utilities, diagnostic
and performa noe
aids
Macro a~sembler, link
editor, etc.
Yes
All Periphonics plus
other PDP-II, Data
Collection (BANKFROM-HOME)
Yes
Yes
Yes
Yes
$50,000 & up
$50,000 & up
-
-
$60,000 to
$700,000
Contact vendor
$100,000 to
$400,000
Contact vendor
$3,000,000 to
$7,000,000
Contact vendor
-
$2,000
$3,600
-
-
-
-
Fall 1977
Fall 1979
1978; 1980 (R-II/)
1980(R-IV); 1981 (R- V) 3/74
Over llQ
Raytheon Data
Rockwell Int'!.
Systems
Raynet N provides
all Raynet 11/
capabilities plus
message switching;
Raynet V provides
all Raynet IV
Capabilities pi us
node-to-node
communications
I-
Periphonics
-
-
Periphonics
-
Raytheon Data
Systems
Multi-Procesl!or (MP) Raynet I supports
System. NP = numnetwork control
functions, redundanber of prooessors;
cy option; Raynet II
Peri-Comm provides for Multiprovides all Raynet
Processor, distributed I capabilities plus
functionality for
host selection;
la rge networks or
Raynet 11/ provides
stand-alone systems all Raynet II
capabilities pi us
protocol conversion
© 1981 DATAPRO RE$EARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
C13-010-128
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
Sperry Univac
DCP/40
(Compatible Mode)
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Systems ReseafCh
Inc.
SRI/DCS
Model 300
Sperry Univac
DCP/40
(Primary Mode)
Univac Series 1100,
Series 90
Univac Series 1100,
Series 90
Burroughs medium
systems (B:/XXX,
B3XXX, B4XXX)
Yes
2
2
Variable
Yes
Variable
Variable
Variable
Yes
DCA
No
Telcon
Custom
Yes
16
16
Variable
Yes
Variable
Variable
Variable
Yes
DCA
No
Telcon
Custom
Yes
4
4
Unlimited
Yes
4
16
Unlimited
No
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Oller 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full.duplex
256
128
32
56K
Capacity halved
Estimated processor throughput, chars./sec.
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SOle
X25-Packet level
Other
NETWORK ARRANGEMENTS SUPPORTED
, As a front -end
Maximum no. of hosts supported simultaneously
M;:tximum no. of hosts channel-attachable to front-end
Mallimum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
MI/Ilimum no. of stations pollable on one line
As a free-standing communications processor
Network ArchitflCture complia nce
Full-capacity data base system
Operating system
As a store-and-fOlWllrd message switching processor
-
Sys1ems Re.,..ro'" /
Inc.,
SRI/OCS
Model300R
Burroughs medium
systems (B2XXX,
B3XXX, B4XXX)
No
--
Yes
4
4
Unlimited
No
-
-
Yes
-Yes
255
255
140
64K
None
208
40
40
19.2
Capacity halved
208
40
40
19.2
Capacity halved
Variable
Variable
18K
18K
Yes
Yes
Yes
No
Contact vendor
Univac
Yes
Yes
Yes
No
Contact vendor
Univac
Yes
Yes
No
No
No
Most Burroughs, IBM
NCR, plus 20 others
Yes
Yes
No
No
No
Yes
Yes
0.85
32
128K bYles
Yes
No
0.85
32
2M bYles
Yes
No
650 ns
16
256K bYles
Yes
No
650 ns
16
256K bYles
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA
DMA
DMA
DMA, Interrupt
DMA
None
DMA. Interrupt
DMA
None
Back-Up and diagnostic peripherals supported
Disk, diskette, console
Disk, diskette, mag.
tape, console
Yes
Yes
Communications operating software:
Availability
Generated by
Separately priced
Host
Separately priced
Host
Incl, in price
Host & comm. proc.
Incl. in price
Host & C9mm. proc.
Additional software supported
Diagnostic debug aid,
performance
Diagnostic debug aids,
performance
Network management,
forms, custom protocols, red unda ncy
Turnkey systems available
Contact vendor
'Contact vendor
Yes
$100,000 & up
$100,000 & up
$50,000 to $80,000
$40,000 to $60,000
$2,460 (5-yr.) & up
$2,200 (5-YL) & up
Not offered
Not offered
Communications operating software-one-time charge
Communications operating software-monthly ch,lIge
Pate of first delivery ,
Number installed to datIl
Serviced by
-$100
-
Included
Not offered
InCluded
Not offered
COMMENTS
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee,
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
-
Yes
$130
1980
3/78
1/80
Sperry Univac
Sperry Univac
75
Hewlett-Packard, SRI
0
Hewlett-Packard, SRI
Extensive networkoriented software;
advanced multi-micro
processor, LSI hardware
Extensive networkoriented software;
advanced multi-micro
processor, LSI hardware
May be chained to.
gether as network
nodes via data comm,
lines; data comm.,
network control, message queuing & forms
handling are front-end
resident
A comm. proceS$!lr
which interfaces to
Burroughs medium sy~tems hosts via data
comm" rather then
channel interfaces;
same services as
SRVDCS model 300
1979
-
-
© 19131 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
v
FEBRUARY'981
V'
1"---
C13-010-129
Processors
Communications Processors~
Management Perspective and Equipment Specifications
,>
~
(
S~ms
Research
Inc.
MCS 3000
Model 300
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
SRIIDCS
Model 100
Hewlett-Packard
Series II. III. 23.
30.44
Surroughs medium
systems (B2xxx,
B3xxx, B4XXX)
Yes
4
4
Unlimited
Yes
4
16
Unlimited
No
Yes
2
2
Unlimited
No
-
No
-
-
-
-
No
Yes
208
208
40
40
40
40
19.2
Capacity halved
Estimated processor throughput. chars.lsec.
Telcon
Industries, Inc.
Datamax
S!Jries
Tandem
Comput,ers, Inc.
NonStop
Inc.
Communications line capacity
No. of half~uplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Owr 9600 bps
Highest line speed supported. bits per second
Effect on line capacity. if all lines are full-duplex
-
Universal; interfaces
with any system
Yes
1024
Yes
8
480
2561
Yes
1024
1024
256
Yes
Yes
Encompass
Guardian
Yes
ApplK:ation~ependent
-
Yes
Unrestrjcted
Unref;tricted
Unrestricted
Yes
Unre~ricted
Telcon
Yes. with floppies Qr
bubble memory
19.2
Capacity halved
2048
2048
2048
56K
Capacity halved
480
Up to 56
14
ZS6K
None
18K
15K
-
-
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
No
6-Level type!;Eltter code.
8383. SA 1. Infocom. .
bisync
-
Yes
No
650 nli
16
128K bytes
Yes
Yes
0.5 to 0.8
16
2M bytes
Yes
Yes
1.08
8
16K PROM. 32K
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
OMA. Interrupt
DMA
None
DMA. Interrupt
DMA
None
DMA
DMA
DMA
Interrupt
Interrupt
Interrupt
Back-up and diagnostic peripherals supported
Yes
Yes
Disk. mag. tape.
console
Communications operating software:
Availability
Generated by
Incl. in price
Host & comm. proc.
Incl. in price
Host & comm. proc.
Additional software supported
Network management.
forms. custom protocols. redundancy
Turnkey systems available
Yes
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
AOCCP/HDLC (UDLC. BDLC)
IBM SOLC
X25-Packet lewl
Other
(
Systems Research
No
No
No
No
Most Burroughs. IBM
NCR. plus 20 others
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time. usee.
Main memory word size. bits
Main memory storage capacity. words or bytes
PRICING AND AVAILABIUTY
Purchase price (system range)
Yes
No
650ns
16
-
~270. Burroughs. TVNet
-
Separately priced
Separately priced
COlnm, processor
On-line network
parameter generation
FORTRAN. COBOL..
Pathway. Mumps.
Enform. TAL
Alarm svstems
No
Optional
Yes
-
RAM
$50.000 to $80.00Q
$38.750 to $60.000
$150.000 & up
$3.000 to $80.000
Not offered
Not offered
Contact vend\>r
$165and UP
Communications operating software--one-tirne charge
Communications operating software-monthly charge
Date of first deliwry
Number installed to date
Serviced by
Included
Not offered
Included
Not offered
1178
30
1179
-May 1!!76
-
6/76
4000
COMMENTS
May be chained together as network
nodes via data comm.
lines; data comm ..
network control. rnessage queuing & forms
handling are front-end
resident
Monthly rental (2-yr. lease. including main!.. range)
i
FEBRUARY 1981
Hewlett-Packard/SRI
8
Hewlett-Packard/SRI
A frpnt-end data
comm. processor, supporting multiple
protocols & dual host
Tandem
A single Tandem system
may contain 2 to 16
processors; up to 255
systems can be configured in a single
network
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08076 USA
REPRODUCTION PROHIBITED
$1.500 and UP
-
General Electric
Optiol'l8l features inclu;le
built-in 300. 1200. &.
2400 bps moderrs, n:tal,
time mode operation.
built-in video bQ8rd for
attachment of ke~rdl
display; capable of mllltiplexing 6 HOLC or
line$; 56K bps line ~
sllpJl(ll1ed on all mode~
Spu:
C13-010-130
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
TRAN
Telecommunicatic;ins
Corp.
M3201A Single-Node
Network Processor
Telefile
CQrnputer Prod..,cts
Inc.
FECP-X
MANUFACTURER AND MODEl,.
~QMPI,)TER SYSTEMS INTERFACED
Xerox Sigma 5-9 &
Telefile Tao Serie!!
Manl.ifactlJrers anej Models
NE'TWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachableto front-end
MIIximl,lmno. stations pollable per line or system
As a remote concentrator
Maximum no. of remoteoonnections to one host
Maximum no. of hosts served by one concentrator
MIIxim\lm no. of stations pollable on one line
As a free-standing cpmmunications processor
Network Architecture compliance
Full-capacity data base system
Open;lting system
As a store-and-forward message switching processor
Yes
6 or more
6 or more
256
Yes
Software-dependent
Software-dependent
Software-dependent
Yes
-
-
TCOS
Yes
Communications line capacity
Il10. of half-duplex lines physicallV atti!chable to
processor if all are operated at tha listed speeds;
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Higl1est line speed supported, bits per second
Effl!Ct on line capacity, if all lines are full-duplex
128
128
128
230.4K
Normally none
I!stimated processor throughput. chars.lsec.
6K bytes
Yes
Yes
No
No
Terminal protoCols suPPOrted:
ASCII, Async. (Teletype)
IijM8SC
AOCCP/HDLC (UDLC, BOLt)
IBM SOLC
X,2!i-Packet level
OIher
No
~
PROCESSOR CHARACTERISllCS
Microprqgrammable bV manufacturer
Pr99rammable bV user
Milin memory cycle time, usee.
Main memory word size, bits
Main memory stQrage capacity, words or bytes
Any with comm.
interface (incl.
Amdahl, IBM, CDC,
HIS, Elurroughs, etc.)
No
Yes
1000
Any (1,000)
327P polling thru PAD
Yes
Transparent
No
DSOS
Opt. peripheral available
TRAN Telecommunications Corp.
M3216 (XPROI
Attached Packet
Processor
TRAN
Telecommunications
Corp.
M3201 Multi-Node
Any with comm. interfaces (incl. Amdahl,
IBM, CDC, HIS, Burroughs, etc.)
Anv with CCITT X.25
interface
No
-
-
--
Yes
750 .
Any (1,000)
3270 polling thru PAD
Yes
Transparent
No
DSOS
Opt. peripheral available
No
-
-Yes
X25
No
EXEC
Yes
115.2K
None
64
64
64
64K
None
33K
33K
37.5K
Yes
Yes
Yes
Yes
Yes (via XPRO)
Yes
Yes
Yes
Yes
Yes (via XPRO)
115.2K
None
30 multiplexing trunks
-
No
No
X.25 HDLC
No
Yes
-
-
-
Yes
Yes
Yes (not recommended)
0.6 to 1.0
16
2M bytes
0.98
16
128K bytes
Yes
No
0.98
16
128K bytes
Yes
No
0.98
16
64Kwords
DMA. interrupt
DMA
DMA. interrupt
-
--
-
Back-up and diagnostic peripherals SlJpported
Yes
Diskette, mag. tape
Diskette, mag. tape
Diskette. mag. tape
Comlllunications operllting software:
Al/ililability
Generated by
Normally included
Host
-
-
Separately priced
Separately priced
M3201
Pata trIiInsfer between memory and;
Cpmm\lnications lines
MalIS Storage
Othe.r peripherals
No
Separalelv priced
Additional software supported
FORTRAN, sort/merge,
etc.
Diel-out, billing
Dial-out, billing
Billing
Turnkev systems available
Y~s
Yes
Yes
Yes
PRICING AND AVAlLA81UTY
~rchase price (system range)
$60,000 ~ up
$125,000 to $250,000
$150,000 to $275,000
850.000 & up
Monthly rental (2-yr. lease, includiAg maint.• ranlle)
2%% to 3% per mo.
--
$7,000 to $14,000 lind
up
$22,500 and up
$1,000 and up
1979
30
TRAN
$2,750 & up
Qlmmunications operating software-one-time charge
Communications operating software--monthly charge
87,000 to $14,000 and
up
$20,000 and up
$800 and up
1976
.
20
TRAN
Hybrid svnc.lasvnc. circuit and packet data
switching system for
'arge-scale single
switching node networks; integrated
diagnostics and
network management
capebilities
Hybrid sync.lasvnc. eircuit and packet data
switching system for
large-scele multiple
switching node networks; integrated
diagnostics and
network management
capabilities
Pa\8 of first deliverv
Nl.lmber instlllled to date
$Srvieed by
COMMeNTS
1978
6
Telefile
© 1981 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
I
1'--. /'
No
-
30 multiplexing trunks
-
k~~
/
-1979
10
TRAN
Requires M3201;
three M3216s may be
attached to one M3201
r/
"
FEBRUARY 1981
C13-010-131
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
('
TRTINorfield
AMMS
TRTI Norfield
Series 300
IBM 303X. Univac.
Honeywell. Burroughs
IBM 303X. Univac.
Honeywell. Burroughs
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
(
i
No
-
No
-
-
Yes
Custom-supports all
Yes
Custom-supports all
-
Cana a Inc.
Electronic Sys.
W-1655-ICC
Most major manufacturers
No
-
-
No
-
Yes
Custom-supports all
-
No
-
Yes
16
4
Response -depe ndent
No
-
-
-
Yes
No
No
64
16
16
50K
None
48
16
16
56K
None
48
16
16
19.2K
None
50K
25K
25K
16
16
Future
9600
Capacity halved over
4800 bps
2400
Yes
Yes
Yes
Yes
Yes
83B. 8A 1. 117B. OCR.
2260. 2780. 3270. &
others
Yes
No
No
No
No
Telex. lWX. Free
Wheeling Async. Infomaster. & others
Yes
Yes
Yes
Yes
Yes
Telex. Dataspeed 40/2
& 40/3. 2780. Free
Wheeling Async .• &
others
Yes
Yes
Yes
Future
No
RESERVEC 1 1. IPARS.
Ul00/U200
Yes
No
0.3
16
256K bytes
Yes
No
1.2
16
64K bytes
Yes
No
1.2
16
64K bytes
Yes
No
0.5
8
32K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
-
Back-up and diagnostic peripherals supported
Disk. mag. tape
Disk. mag. tape
Disk. mag. tape
-
Communications operating software:
Availability
Generated by
Included in price
Comm. processor
Included in price
Comm. processor
Incl uded in price
Comm. processor
Separately priced
Comm. processor
Additional software supported
Electronic mail
-
SMDR. ClM. ClR. OE.
PO
To customer requirement
Turnkey systems available
Yes
Yes
Yes
Yes
-
Communications line capacity
No. of half-duplex lines physically attachable to
the listed speeds:
processor if all are operated
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported. bits per second
Effect on line capacity. if all lines are full-duplex
Estimated processor throughput. chars.lsec.
Terminal protocols supported:
ASCII. Async. [Teletype)
IBM BSC
ADCCP/HDLe (UDlC. BDlC)
IBM SDlC
X25-Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time. usec.
Main memory IMlrd size. bits
Main memory storage capacity. IMlrds or bytes
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. lease. including maint.. range)
Communications operating software-<>ne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
(.
-
No
-
-
at
..
No
-
Westi~house
TRTI Norfield
Series 200
i
FEBRUARY 1981
Yes
-
Interrupt
Interrupt
$95.000 to $500.000
$40.000 to $ 100.000
$30.000 to $300.000
$15.000 to $20.000
Contact vendor
Contact vendor
Contact vendor
-
-
-
-
3/75
30
TRT/Norfield/third
party
Multi-node processor
systems available. Norfield Communications
is a division of TRT Data
Products. a United
Brands company; a
manufacturer of
message switching systems
3175
6/76
2
TRT/Norfield/third
party
Norfield Communications
is a division of TRT Data
Products. a United
Brands company; the
Series 200 is a communications controller
-
-
8
TRT/Norfield/third
party
Multi-node processor
systems available. Norfield Communications is
a division of TRT Data
Products. a United
Brands company; the
series 300 is a lowend message switch
© 1981 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
Contact vendor
9176
200
User or third party
Unit is modular. uses 3
micro-processors. a nd is
the basis of customdesigned special systems
Cl 3-010-101
Processors
f
Communications ProcessorsManagement Perspective and Equipment Specifications
As the concept of distributed data processing gains increased acceptance, the need for computer systems that are
dedicated to the specialized tasks of data communications
processing becomes increasingly important. Whether a
particular network arrangement favors strong centralized
processing or distributes processing power throughout the
network, users can now choose from a wide variety of
products that support increasingly sophisticated front-end
processing, intelligent remote concentration, network
processing, and other communications processing capabilities.
Enthusiastic promotion by minicomputer manufacturers,
independent systems houses, and mainframe vendors
accounts for the widespread support of both remote and
local data communications processing. During the past
several years, virtually every major computer manufacturer has announced its own network "architecture",
a set of rules, procedures that governs how its hardware
and software products can be organized to create a network structure. And, of course, communications processors serve as key building blocks in the construction
of these networks.
A discussion of the characteristics. functions. and
significance of modern programmable communications processors.
The report includes charts comparing 84 commercially available communications processor systems for 39 different vendors and an analysis of
user experience from 245 users with over 400
communications processors or controllers installed.
Several major developments have led to the dramatic
increase in the use of communications processors, and to
their continual development into machines with progressively higher capacity, capability, and compatibility.
The first major development was recognizing that the
data communications functions must be segregated from
other data processing functions. This resulted in modular
communications software packages and communications
interfaces that permit alteration of the communications
environment without major surgery to the hardware and
the software. It also permits the organization of communications processing functions, relative to other processing functions, along assembly-line principles. The
assembly-line technique segments a job into discrete
elements for exclusive execution by specialized persons
or equipment; the assembly-line total output significantly
exceeds the output of the same persons or equipment
with each performing the total job. The development of
specialized components to perform essential line handling
functions resulted in the front-end processor, which freed
the host processor of this time consuming task. A frontend / host configuration is able to handle a significantly
greater data volume than a single processor with equivalent power that performs both the line handling and the
data processing function.
The second major development was the introduction of
the microprocessor. Now a standard item utilized in all
types of electronic componentry, the microprocessor
permits implementation of sophisticated processing functions at increasingly low cost. And the fact that the costs
of transmission facilities have not decreased as rapidly
as microprocessor-based processing justifies placement of
communications processing equipment not only at the
host site, but throughout the data communications network.
«
The Model 3690 is Comten's top-of-the-line 3705 replacement. The
3690 supports up to 512 communications lines and up to eight
channel attachments to IBM 360/370 and compatible hosts. Its basic
256K bytes of memory is expandable to over 4 megabytes and,
unlike the 3705, peripherals such as disk and magnetic tape
storage are supported.
MARCH 1980
Intimately tied to the evolution of intelligence for communications processing equipment, is the parallel development of intelligence for remote data processing equipment.
The assembly-line concept can be extended to all segments
of a network, in which many small systems perform
specific, specialized communications and data processing t>
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-102
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
1:> tasks independently of the host computer. This decentralized or distributed data processing has given rise to a
new type of data processing module: the small processor or
minicomputer which performs both data and communications processing. IBM's System 8100 and Sperry Univac's
V77 family of minicomputers are two examples of processors which can serve either as independent processors, or
as distributed systems which offer significant communications control capabilities.
A third, and often overlooked, influence on the development of communications processors is the effort on the
part of most vendors towards standardization. This ongoing effort, along with hardware architectural improvements, is reducing the investment, inventory, and software
support necessary to support a variety of different terminal
and line disciplines, which are different for few justifiable
reasons. Standardization, in addition to reducing costs to
existing users, will continually increase the user base that
can economically justify the use of electronic communications in their operations.
Recent Developments
The ground rules or network architectures announced by
most of the large mainframe and minicomputer manufacturers have codified their communications standards.
IBM's Systems Network Architecture, DEC's DECnet,
Sperry Univac's Distributed Communications Architecture, and Honeywell's Distributed Systems Environment
are examples of such architectures. Bit-oriented protocols
are rapidly being adopted that improve the performance
and error checking/recovery capabilities of data transmissions. Minor variations of the international HDLC or
IBM's SDLC bit-oriented protocols are now supported
by many suppliers of communications equipment.
Communications processor hardware and software
architecture are continually being changed. Transistors
have been replaced by multi-layered, electronically
coupled, chip circuits. Throughput capabilities are enhanced by using mUltiple microprocessors within the
communications processor to perform specialized functions. Altering the microcode or stored logic (either
directly by the user or indirectly by such features as
IBM's Extended Facilities) has added a new dimension
to throughput improvement techniques. Multiport memory access has facilitated warm-start back-up systems.
Virtual operating systems are taken for granted and fullcapability data base management systems are being given
serious consideration by installations previously reluctant to accept the associated CPU overhead.
While the communications processor manufacturers have
been improving their hardware and software, the common and specialized carriers have not been idle. AT&T,
in Chicago, is testing fiber optic cable in place of existing line cable. The significant volume of microwave
voice and data transmissions has caused governmental
concern about eavesdropping by foreign powers. ITT
has committed itself to join Telenet, Tymnet, and Graph-
net in offering a packet switching service that is characterized by charges for data transmission that are independent of distance. Certified equipment can be attached to
phone lines without AT&T's DAA protective device.
Voice-grade lines can be used to transmit at up to 9600
bits per second. The changes in the costs of communications lines and in their capabilities varies with individual situations and is sufficiently complex to defy
summation.
Definition and Applications
A communications processor, in the context of this
report, is simply a digital computer that has been specifically programmed to perform one or more control
and / or processing functions in a data communications
network. As a self-contained system, it mayor may not
include the following components, depending on its
specific application: communications lines multiplexor,
line adapters, central computer system interface, and
on-line peripheral devices. It always includes a specific
set of user-modifiable software or interchangeable firmware modules, which can be used to implement particular
customer requirements.
Communications processors do not represent a new
system design concept. During the industry's second generation, in the early 1960's, such processors were offered
by several of the major main-frame suppliers, including
Control Data's 8090/8050, General Electric's DAT ANET-30, and IBM's 7740. Also, as early as March 1963,
Collins Radio Company (now Rockwell-Collins) delivered its first Collins Data Control programmable
communications system. In almost all such early uses, the
systems were used primarily in message switching applications, acting simply as a message router and dispatcher
in a data communications network.
The principal differences today lie in the diversity of
application areas, the relatively low cost of such units,
and, by consequence, the trend toward widespread usage.
Listed below are some of the principal uses of communications processors in current data processing systems. It is important to note that many such units can be
used in a variety of application areas, with specific sets
of software and interface units for each application. The
currently popular types of applications include:
• Front-end processing. The most significant application
of communications processors, in terms of both frequency of use and level of complexity, is front-end
processing. The communications processor replaces a
hard-wired communications controller as the interface
between the central data processing system and the
data communications network. The concept of frontend processing essentially involves off-loading or removing the data communications control function from
the central processing unit and setting it up as an
external, largely self-contained system. The front-end
processor not only receives and transmits all data
passing through the network, but also, and signifi- 1:>
© 1980 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
' ' ---_
C13-010-103
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
1>
cantly, can be programmed to pre- and post-process
this data in a variety of ways in order to relieve
the system's central processing unit from time-consuming overhead activities related to message formatting and control. This decentralized approach to the
distribution of processing labor permits both the communications and central processors to perform their
primary functions in parallel and with little interference.
Data is passed between the processors only when
necessary and with as high a degree of efficiency as is
possible in circuit design.
A typical front-end processor might control a hundred
or more communications lines of varying speeds and
types attached to a large number of diverse remote
terminals. The front-end processor would ideally
assume all terminal, line, buffering, and message control
functions, permitting the central processing unit and the
user application programs to treat the communications
network as just another high-speed, on-line peripheral
device.
Front-end processors can perform their functions in
support of a wide variety of data processing
applications. Additionally, the more sophisticated
communications processors can be employed with
software which permits them to be automatically
reconfigured from a front-end mode of operation to that
of a remote communications processor. This feature
permits a single front end to switch automatically to a
backup host in the event of a primary host failure, and
also to perform communications processing for both
local and remote hosts simultaneously.
• Line concentration. Communications processors sometimes fill the relatively simple role of communications
line concentrators. Here the processor generally terminates a number of low-speed transmission lines and
interfaces them to one or two higher-speed lines for
more efficient and economical data transmission. Little,
if any, processing of the transmitted data is performed.
The programmable aspect of the processors is probably
less used in this application than in any of the other
currently popular uses. Hard-wired concentrators are
generally equally effective, suffering by comparison
only in their lack of flexibility.
(
to determine their proper destination, performs any
code conversions that may be necessary, and transmits
them to other remote terminals. The sending and/ or
receiving remote terminals may themselves be computer
systems. Most message switching systems are of the
store-and-forward type, in which the processor stores
the messages it receives on on-line auxiliary storage
units, such as disks, drums, or magnetic tape. The
length of time the messages are stored prior to transmission to other terminals or computers can range from
a few seconds to an entire day or more, depending on
the specific application needs and traffic volumes. The
processor performs little, if any, processing on the
messages; it acts principally as a traffic director.
Communications Processor Components
The essential components of every communications processing system are the following:
I. Processor. The processor element is a stored-program
digital computer of almost any size. It must have its
own main memory, but it mayor may not use on-line
peripheral devices. The processors should have excellent interrupt and/ or direct memory access (DMA)
handling and strong bit manipUlation capabilities.
2. Central processor interface. When acting as a frontend, the communications processor must include the
proper hardware interface to permit it to connect
directly to a standard input/ output channel of the
central processing unit (or host computer). Such an
interface should permit the host computer to communicate with the front-end processor as if it were a
standard peripheral device control unit, requiring
little, if any, operating system software modification.
When acting as a remote processor, support for data
communications line interfacing that connects the
processor with the host computer(s) must be provided.
3. Communications multiplexor. This component provides a logically independent data channel into the
communications processor's main memory for every
transmission line being served. The multiplexor serves
as the communications processor's functional interface
with the data transmission lines. Control of incoming
and outgoing data is coordinated between the multiplexor and the processor via interrupts or direct
memory access (DMA).
• Dedicated processing. Many communication processors now have enough storage capacity and processing power to enable them to serve as the sole or
principal computers in dedicated application systems
of various types. In inquiry/response systems, for
example, the processor receives inquiry messages from
remote and/ or locally connected terminals, processes
the messages to determine the specific information
required, retrieves the information from on-line
random-access storage units, and sends it back to the
inquiring terminals. In systems of this type, applicationoriented processing is of equal importance with message
receipt and transmission.
4. Line interface units. These components are hardwired
devices that link the multiplexor with the modems
that terminate each communications line. Like the
modems, the line interface units are specifically tailored
to serve the speed transmission characteristics of the
lines they terminate. The lines are, in turn, generally
selected according to the transmission requirements of
the remote terminal devices.
• Message switching. The message switching processor
receives messages from remote terminals, analyzes them
5. Soft ware/ Firmware. The communications processing
hardware components become an integrated, func- 1>
MARCH 1980
© 1980 DATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-104
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
t>
tioning system only through the inclusion of storedprogram logic (either firmware or software)-some
generalized, and some highly specialized. The programs
should include terminal control, line control, message
control, and central system interface procedures. Depending on the supplier, the user may have to provide
some portion of the software required to implement
specific requirements.
Communications Processor Functions
Because a communications processor is essentially a computer, it can be programmed to perform an almost limitless
variety of functions. But in its role as controller of a
data communications network, the specific functions
generally programmed are those that relate to data and
message control. The following functions are the most
important ones offered with the more comprehensive
communications processing systems. Some systems will
not provide all these functions, as all are not required
in specific installations.
1. Line control. This involves the periodic polling of
terminals to determine readiness to transmit and
receive data. Automatic call answering, acknowledgement, and dial-up can also be handled.
2. Character and message assembly. Bits are assembled
(and disassembled) into parallel characters, and/ or
control characters are recognized to permit the assembly and disassembly of entire messages. Data can
be handled at varying line speeds and in synchronous
or asynchronous formats, with start-stop bits and
synchronizing characters handled automatically.
3. Data and protocol conversion. The data transmission
codes (such as Baudot, ASCII, etc.) and protocolprescribed formats are converted into structures that
are equivalent to the hosts native data code (such as
EBCDIC) or conform to the formats of more efficient
protocol procedures.
4. Data and message editing. This is a general function
that can include application-oriented reformatting,
removal of spaces and zeros (and other kinds of data
compression), and other data restructuring to permit
more efficient data transmission and more efficient
processing by the host computer.
5. Error control. Using both hardware and software
techniques, the communications processor can detect
and correct data transmission errors before they reach
the host computer.
6. Message buffering and queuing. The communications
processor can buffer several messages in its main
memory before passing them to the host computer,
with the intention of interrupting that computer as
infrequently as possible. Also, if the host computer
cannot process incoming messages as fast as they
arrive into the system, the communications processor
can queue these messages in its own auxiliary storage
units, such as disks, drums, or magnetic tape units,
and can transfer these messages to the host computer
when processing time becomes available. Queue management can be arranged in several different ways,
including a system of priorities.
7. Message switching. When the communications processor serves more than one host computer, it will
analyze message headers and addresses and send each
incoming message to the proper destination. This
situation can occur when several computers share a
data communications network while each remains
dedicated to specific applications.
8. Message answering. Certain messages, such as simple
inquiries, can be completely processed by the communications processor without any contact with the
central data processing system. Since many communications processors permit attachment of on-line
auxiliary storage units, these processors can store
and access their own private data bases. Some systems
also permit the communications processors to directly
access the auxiliary storage subsystems and data files
of the host computer.
9. Message recording. Vital inbound messages can be
passed on to the host computer while being simultaneously recorded in the communications processor's
auxiliary storage. Such message recording can assist in
system restart operations in case the central system
should malfunction and lose either its messages or the
results of processing the messages. Also, it may be
advisable in some systems to store a journal record of
every message received during each processing period.
10. Statistics recording. The communications processor
can keep a running record of all data communications
traffic, including such statistics as total number of
messages processed, number of messages delivered to
each destination, number of line errors, average length
of time in queue, number of busy signals, etc. These
statistics can be dumped on demand or in the form of
reports at the end of each processing cycle.
Other application-oriented functions can be programmed
by the communications processor supplier, by the user, or
by some combination of the two. It must be remembered,
however, that the communications processor, like the host
computer, has only a finite amount of processing power.
The more functions that are added to it in order to relieve
the host computer, the more likely it is to run out of
power, especially in active, growing communications networks. A communications processor pushed beyond its
capacity will result in lost messages and, ultimately, in
system failure.
Advantages of Communications Processing
Programmable communications processors are enjoying
increased popularity in various parts of data communica-
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
t>
C13-010-105
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
1:> tions systems because they are demonstrating themselves
to be more effective on a price/performance basis than
their predecessor hard-wired controllers. General advantages that contribute to this price/performance edge
include the following:
I. Price. Through the economies afforded by integrated
circuitry, modern communications processors can
often be purchased for less money than specialized
hard-wired controllers. Even when the cost of specific
data communications software routines or firmware
modules is added to the cost of the basic system, the
net price of the microprocessor-based controller will
often be substantially less than the hard-wired
equivalent.
2. Performance. In spite of the lower cost, communications processors can frequently handle more and
higher-speed data communications lines than hardwired counterparts, with less host intervention or overhead.
3. Flexibility. These programmable processors are designed to handle many line speeds and transmission
characteristics in uniform or interchangeable circuitry
and to support a wide variety of remote terminals
from the mainframe and independent suppliers, regardless of their transmission speeds, line control
conventions, synchronization techniques, and data
codes. And since they can be modified at any time and
at comparatively low cost by user or vendor, they are
eminently well suited to handling key roles in data
communications systems, which are typically characterized by bewildering variety and constant change.
As advances in communication line facilities are made
by the common carriers, and also by the independent
companies, making available new, faster, and lowercost transmission services, the advantages of this
flexibility become eminently important in guarding
against system obsolescence.
4. Expandability. Communications processors permit
relatively easy growth of the data communications
network, principally by adding line interface units and
modifying the control programs.
5. Distribution of labor. Since these processors can be
programmed to perform varying amounts of productive processing, often in conjunction with their
own on-line peripheral devices, they can share portions
of the overall processing load with other processors
in the system-including the central processor. Peak
loads can be more effectively handled and critical
bottlenecks more likely avoided. In the case of a
front-end processor, controlling the entire data communications subsystem will relieve the system's central
processing unit on two counts: processing time and
main memory space. Central control of data communications networks can consume 40 to 50 percent of
the available processing time in typical situations. And
the resident software control routines can easily
consume in excess of 50K bytes and frequently use up
MARCH 1980
to 300K bytes or more of main memory space, depending on the functions performed. Efficient utilization of
front-end processors can provide almost full relief in
both processing time and memory space overheads. (If
the host processor is not overburdened, the need for a
programmable unit may be harder to justify.)
6. Fail-soft capability. In data communications systems
that include at least one other computer, programmable communications processors can provide some
form of continued system operation when one or
more of the other computers become inoperative. The
degree and effectiveness of this fail-soft capability
depend not only on the capabilities of the programmable processor, but also, perhaps more importantly,
on the skill displayed by the system architect in his
provisions for redundant components and fall-back
procedures.
7. Independent processing. When programmable communications processors are not involved in their
principal data communications tasks, they can often
be used as stand-alone data processing systemsprovided, of course, that their configuration includes
some peripheral input/ output devices. Simple media
conversion tasks, such as card-to-tape and tape-toprint, can be valuable by-products from these otherwise communications-oriented processors, and localized time-sharing can yield added benefits. In off-line
mode, the processor can also be adapted to serve
specialized I/O devices, such as plotters and OCR
devices, that the central system may not be able to
handle.
Potential Problems
Communications processors deserve careful investigation
because of their many apparent advantages over hardwired communications controllers. Such investigations
should include as many probing questions as possible,
because there are potentially serious pitfalls to be avoided.
One potential problem is the question of overloading the
communications processor, with the resultant loss of
data. Sophisticated data and message control programs
will consume large quantities of the communications
processor's computing and memory facilities, just as they
do in a centrally-based communications system. A tendency toward overloading can easily negate any apparent
advantages of expandability and growth potential.
Another serious question is that of software. The body of
software required for terminal control, line control, and
message control activities, not to mention applicationoriented pre-processing, is unquestionably complex. It is
also vital to the operation of these systems. The prospective user must determine whether or not the supplier
is capable of supplying this software, at what level of
completeness, with what assurance of bugfree stability,
with what chances of interfacing smoothly with the
central system software, and with how much installation 1:>
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-01 0-1 06
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
I:> assistance. Obviously, if the software doesn't work properly, the system is of little value. From another point of
view, a system whose software works but performs very
few and very basic functions may still offer little more
than a typical hard-wired controller.
Another consideration is that the hardware/software
combination that makes up a communications processor
may require far more time and effort to install and make
operational than a hard-wired controller, especially when
the supplier of the communications processor equipment
is different from that of the host computer system. Apart
from the traditional problems (real or imagined) of
divided vendor responsibility, there exists the very real
problem of integrating two completely different sets of
hardware and software.
A currently operational data communications installation
which is considering replacing its hard-wired communications controller(s) with a communications processor
must carefully evaluate the problems of conversion.
Beyond the usual problems of data integrity and the
logistics of arranging the conversion process, the user
may also be faced with the prospect of modifying either
his central system control software of his body of application programs that use the communications network.
Evaluating a communications processing system on a
cost/value basis is extremely complex and can be almost
meaningless when performed in the abstract. Costs will
vary with the size and diversity of the network being
controlled, with the size and processing power of the
communications processor, with the number of control
and preprocessing functions incorporated (software is
expensive, whether hidden in a "bundled" system price or
not), and with the number of on-line peripheral devices.
Keeping costs to an absolute minimum will probably result
in a system that is capable of little more than the hardwired controller it is replacing. In this case, the cost
differential is easily measured, but it will not likely be
significant in either direction.
vendors, with differing product implications depending
on the source selected.
Designers of the data communications system will probably first contact the supplier of their present or planned
main-frame computer to investigate its offerings in the
area of data communications. If communications processors are strongly promoted as the best (sometimes
only) way in which to construct efficient, fully supported systems, the designers will usually go along with
the recommendations of the main-frame supplier. The
designers are comforted by the belief that their data
communications subsystem will be fully supported and
will interface efficiently with the central processing system.
It is in this regard that developments such as IBM's SNA
and DEC's DECnet increase in importance to systems
designers.
But not all main-frame suppliers are equally advanced
in their data communications product line, and not all
offer a selection of programmable communications processors supported with product-line software. Recent computer system announcements have, however, brought
forth a number of such new products from the major
manufacturers, as they both follow and "legitimize" the
trend toward use of these processors.
Users not fully satisfied with the offerings of their
main-Trame supplier can investigate the wares of other I:>
Adding functions that will permit use of "foreign" terminals, relieve the central processor of intolerable overheads, and allow independent and back-up processing
may increase the costs as it increases the value. In order
to evaluate the reasonableness of the cost of the communications processor and the potential cost savings
throughout the system, an effort must be made to
associate specific dollar figures with the expected values
to be derived from re-orienting a host-controlled data
communications system to an externally controlled one. In
summary, it should be clear that costs and values of
communications processing can be assessed only in terms
of specific situations and specific systems.
Sources of Supply
One of the most interesting aspects of the story on programmable communications processors is that computer
users can now obtain them from literally dozens of
The CC-85 from Computer Communications, Inc. is designed for
controlling a high-volume data communications network of IBM
and IBM-compatible mainframes. Peripherals include a microprocessor-controlled color CRT console that is used as a system
supervisor, system monitor, or engineering console. The CC-85 can
support up to seven channel-attachable host computers and up to
1232 communications lines of mixed speeds and protocols.
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
',-
C13-010-107
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
t> promising suppliers, most of whom offer assurances that
(
their communications processors can be "plug-compatible" with either the hard-wired or programmable
communications controllers of the mainframe supplier,
or at least with its data communications hardware and
software interfaces.
few, if any, changes to the central system's communications control software or the user's application programs.
It does not necessarily relieve the central system of any
software control overheads, but simply provides a more
flexible interface to the communications network for
accommodation of additional and varied lines and terminals in the future.
The minicomputer manufacturers constitute one prominent group of suppliers who are actively pursuing the
communications processor market with products that can
either stand alone or interface smoothly with the mainframe equipment of other suppliers. Almost any currently
marketed minicomputer is capable of serving as the
fundamental building block of a programmable communications processor, and many include communications
hardware and specialized software packages to permit
them to serve effectively as complete communications
processing prod ucts.
The most prevalent examples of this type of front-end
processor are the many available units designed to replace
or "emulate" the IBM 2701 Data Adapter Unit and the
IBM 2702 and 2703 Transmission Control Units. These
front-end processors function with the IBM System! 360
or System! 370 computer systems through the standard
IBM BTAM, QTAM, and TCAM communications control software.
A major source of integrated communications processing
products is the independent systems houses, especially
those that specialize in data communications systems.
Companies such as these will generally provide complete
hardware! software packages, including communications
and central computer interfaces. In many cases they will
accept full responsibility for the design and implementation of the entire data communications system. Such
independent companies are generally well qualified in
producing effective data communications systems, but
prospective buyers of such systems must still consider
the affects on the total system of dividing responsibility
between at least two principal suppliers (communications
and central system) and assure themselves that the products and systems of the several involved suppliers will
indeed interface properly and function harmoniously.
Regardless of which type of supplier is selected, the
buyer should show partiality to those vendors who will
not only guarantee turnkey installation of their equipment but will also provide plans for future growth. If the
user is faced with the formidable task of interfacing and
integrating a variety of impressive but highly dissimilar
communications and processing equipment, the proposed
system may never get past the design stage.
Buying Guidance
The communications processing products have not
matured to the point where their descriptive terminology is
in any way standardized or consistent. As a result,
prospective buyers must make every effort to determine
exactly what they will be getting and what they will not.
The sales brochures and technical manuals are often not
sufficiently informative (and sometimes downright
misleading).
(
For example, there are at present two distinctly different
kinds of front-end processors. The first and more basic
variety is designed to simply replace the functions and
services of the central system's hard-wired controller. It
is meant to be a plug-compatible replacement, requiring
MARCH 1980
The second and more powerful variety of front-end
processor is designed to replace not only the functions
and services of the hard-wired controller, but also most
or all of the data communications control functions
normally performed by the central system'5 processing
unit and resident software. This variety of front-end
processor, by freeing the central processing unit for
productive work, provides valuable advantages not only
in data communications flexibility, but also in systems
throughput.
It is possible that a user may want to install the basic
kind of front-end processor initially and then gradually
add functions to it to relieve the central processing unit's
communications overheads. However, the user must make
sure that the selected front-end processor has enough
processing and memory capacity to permit the gradual
build-up of substantial message control routines, and
that the various responsibilities of both the vendor and
the user are clearly assigned.
In the case of systems performing line concentration,
network node, and remote processing tasks, an equally
wide range of capabilities is represented by current
product offerings.
Another buyer's tip is to look for the word "turnkey."
Turnkey installation of front-end processors usually
means that the supplier takes on full responsibility for
hardware, software, and interfaces required to essentially
"plug in" the product. From a user's point of view, this
approach is highly desirable, since it can save money, time,
and aggravation. But the user must still determine what
product with what promised functions is being offered on
the turnkey basis. It may still be a somewhat limited frontend product.
A low list price can be totally misleading, since it may
include only the basic processor hardware and an associated communications multiplexor. The cost and effort
of establishing the proper interfaces and writing the allimportant software can be dropped squarely on the buyer,
who may have been trapped by an attractive low-price bid. I:>
© 1980 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-108
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
t:> Since software development is such a critical question,
the buyer should determine early in the proceedings
exactly what software is provided with the basic frontend system and at the basic price. If certain software is
lacking, such as specific remote terminal handlers or
message queuing routines, then implementation and integration responsibilities should be clearly fixed, and with
firm price quotations.
The smart buyer will also ask the competing bidders for
clear statements of service and support after installation.
Since data communications subsystems can be complex
and demanding in any environment, it must be considered
an extremely valuable system feature if the prospective
supplier of the communications processor offers to assume
full operating and service responsibility for the externally
controlled communications network that is directed by his
product.
When considering a communications processor from a
source other than the supplier of the central computer
equipment, the buyer should insist on receiving concrete
performance data, drawn from installed systems, to
substantiate the supplier's claims. The buyer should
beware if the supplier refuses to back up his claims with
actual case studies. As further evidence of proven performance, the buyer should personally contact as many
previous users as possible, probing not only for their
degree of satisfaction, but also for the extent to which
the installed systems reflect his own intended system
design and functional objectives. However, even in highly
specialized reference accounts, meaningful information
can be derived regarding the supplier's competence and
willingness to help, and the basic reliability of the hardware/ software package.
When the proposed supplier is a major mainframe
manufacturer, the buyer will also want evidence of
proven performance. This evidence should apply to the
overall performance of the total, integrated data processing system, and not just the communications subsystem. However, when the main-frame supplier offers a
choice of a front-end processor or a hard-wired controller
(as several now do), then the buyer will again want
specific, tangible performance data to justify selection of
front-end processing. Of course, the mainframe supplier
can forcibly persuade adoption of the communications
processor concept, even without offering convincing performance data, by simply indicating that the newer
product will receive all future support and that the
former one will be essentially dropped from the product
line.
Communications Processors from the User's
Point of View
In the December 1979 supplements to both DATAPRO
70 and DA TAPRO REPORTS ON DATA COMMUNICA TlONS, we published a Reader Survey Form on
Communications Controllers/ Processors. Although the
subject of this report is communications processors,
considerable feedback was received on popular hard-wired
controllers, and summaries of the users' ratings with these
products are also included to provide a frame of reference.
However, hard-wired controllers were excluded from the
usage patterns described in the text below.
By our editorial cut-off date of January 18, 1980, we had
received a total of 245 usable replies representing 40 I
controllers and processors. Both the number of responses
from communications processor users and the number of
processors represented were almost exactly the same as in
our previous survey conducted in 1979. However, the
number of responses from users of hard-wired controllers
decreased by more than 40 percent. We assume that this
strong decline of responses from users of hard-wired
controllers, which was also observed in last year's survey
results, is a reflection of the dwindling of the user base
for this inflexible type of equipment.
The content of these responses is tabulated in the accompanying table. The table is arranged into the two basic
equipment groups: hard-wired controllers and front-end
processors.
In an attempt to identify how communications processors
were being used, we asked the users to check one or more
usages in a list of five: front-end, stand alone or message
switching node, remote concentrator, terminal controller,
and other. The purpose was to determine the level of
sophistication among users in the use of communications
processors. The results are summarized below, but be sure
to read the notes following the presentation.
Percent of
Responses
Processor usage
Front-end
Stand-alone or message switching node
Remote concentrator
Terminal controller
Other
97%
3
8
19
3
Because the percentages total over 100 percent, it is
obvious that some users reported more than one usage. In
most cases, it appeared that mUltiple units were being used
in different fashions. For example, one user of two
processors might have indicated that one was employed as
a front-end, while the other performed as a remote
concentrator.
Within the category of front-end usage, we asked the
users to indicate the type of control software being
used, with these results:
Front-end Software
Percent
of IBM
Users
Percent
of non-IBM
Users
67%
29
4
36%
3
61
270X Emulation
NCP Mode
Other
Among the IBM users, two distinct patterns of usage
were indicated. Those using the IBM 3704 as a front-end t>
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
C13-010-109
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
1:> processor indicated that their usage was exclusively 270X
emulation. Of the 3705 users, 57% were using 270X
emulation software, 37% were using IBM's Network
Control Program, and 6% were using other front-end
processing software.
While it is apparent that many users are still not making
use of the full power of front-end processors, it would
appear that this percentage is dwindling. It is too early to
determine the impact of distributed systems such as the
IBM 8100, but Datapro believes that the increased integration of computer systems can only result in increased
network and communications sophistication and
efficiency.
We also asked these users whether their communications
processors accessed more than one host computer. Of
these users, 30% answered affirmatively and reported an
average of 2.4 host computers per system.
When questioned as to which protocol(s) were being
handled by their communications processors, these users
indicated usage of the following line disciplines:
Percent of
Users
Protocol
(
Asynchronous
Bisynchronous (including IBM BSC)
IBM SDLC
X.25 Packet-Level
Other
55%
83
20
3
5
The host computer or computers were identified on
virtually all 211 responses. A total of 240 computers were
mentioned. The overall distribution of host computer
models revealed the following pattern:
Percent of
Users
Host Computer Model
IBM 370/115 through 370/148
IBM 370/155 & Larger
IBM 303X
Amdahl
Burroughs
Univac
All others
24%
39
24
12
3
I
9
The survey form also asked the users to identify areas of
major difficulty. These users' assessments are summarized
below:
Percent of
Responses
Reporting
Major difficulty
Communications processor software
Host system software
Throughput
Communications lines
Modems
Terminals
System expansion (installing more lines)
MARCH 1980
24%
17
5
21
9
10
17
Comparison Charts
A catalogue of commercially available communications
processors along with the basic characteristics is presented on the following pages.
A prospective buyer can easily scan the charts to determine the scope of the options available for a given set of
requirements. The proper use of the charts will produce a
list of vendors and equipment that merit detailed study. It
is only from a detailed study of the equipment that an
advantageous price/performance selection can be made
for a given systems requirement. It would be a misuse of
the charts to eliminate a processor from consideration on
the basis of comparing characteristics finely without
checking to see if the architecture possesses a feature that
overcomes a seemingly small disadvantage.
To have been included in the charts, a processor must
have had appropriate hardware and software to function
either as a front-end processor, as a remote concentrator,
or as a free-standing communications processor. Processors designed to perform only message switching of voice
grade lines were deemed not to meet the criteria for
inclusion.
All of the actively marketed equipment known to Datapro
that satisfies the qualifying criteria is represented. Any
omission is because the product is no longer marketed or is
unknown to us.
The information presented on each communications processor in the accompanying charts serves not only to
describe the basic characteristics of the equipment, but
also assists in defining physical and throughput limitations. With one exception, all non-economic characteristics reduce themselves to one consideration: the throughput capabilities of the equipment relative to the specific
systems requirements. The exception is where the physical attachment limitations are exceeded before the processing capabilities are fully used.
For example, the number of high speed communications
lines that are physically attachable to a processor usually
exceeds the throughput capabilities. For that reason,
most vendors submitted a smaller value for the number of
lines attachable at the higher speeds than the equipment
could physically accommodate. The numbers more accurately describe the outer limits of the processor's
throughput limitations than the physical limitations. All
of the vendors were concerned that readers realize that
the line mix and the resource mix could radically alter the
number of lines that could be supported, physical port
availability notwithstanding. Datapro was most impressed with the responsible attitude universally exhibited,
and we are very optimistic that better ways of expressing
throughput capabilities will develop between the combined efforts of the suppliers of communications proces1:>sors and Datapro.
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-110
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
USERS' RATINGS OF COMMUNICATIONS PROCESSORS/CONTROLLERS
Processor/Controller
Number
of
User
Responses
(
~
User Ratings*
Number Average Average
No. of
Overall
Ease of
of
No. of
Throughput
Satisfaction
Installation
Lines per Terminals
Units
Unit
per Line WA
Installed
E
G F P WA E
G
F P WA E G
F
P
Hard-Wired Controllers
3.8
3.5
..
4
16
0
1
8
0
0
3
1
a
0
0
0
0
14
0
a
3.4
20
9
4
2
3
5
2
0
2
0
0
0
0
0
a
3.3
3.7
3.4
2
2
4
1
1
2
a
3.0
1
2
1
0
3.0
1
3.9
1.9
3.4
2.7
3.6
3.6
3.8
3.6
10
6
3
19
8
4
1
13
0
a
0
0
0
0
0
2.9
3.2
3.8
3.1
13.5
10.2
3.3
1
2
a
0
3
2.7
4.0
3.7
2
1
0
5
6
34.7
2.0
3.2
1
4
34
92
3
129
39
151
5
195
6.2
21.6
14.4
18.3
5.6
5.6
1.5
5.5
3.6
3.4
3.0
3.5
22
44
0
66
lIT Courier .VTLC
4
4
1.0
8.0
3.0
Memorex 1380
4
4
62.8
4.2
Periphonics T-Comm 7
4
7
12.3
15
26
211
356
a
3
9
2
a
3.6
20
4.9
3.5
3.8
3.5
4.0
3.7
15.4
2.6
46
30
6
82
20.7
69.7
114.2
45.5
3
4
DPF, Inc. CMC
3
Honeywell 66XX
IBM 270X
Memorex 1270
Sperry Univac, all
5
27
2
7
35
3
10.7
28.1
8.3
3.7
2.2
6.8
3.4
3.7
TOTALS
34
45
24.1
2.4
Burroughs B874
Burroughs DCP
Subtotals
4
3
7
6
6
12
9.0
39.8
24.4
CCI CC-8
4
13
18
11
4
33
DEC, all
2
18
a
a
a a
3.0
3.6
1
17
a
3
10
2
1
0
1
..
1
3.5
18
15
1
0
0
0
1 0
3.8
3.3
3.6
3
1
4
1
2
3
0
a
2
1
0
3.3
1
3
a a
4
3
3
10
9
7
1
17
3
1
1
4
1
3.7
3.7
3.8
3.7
13
7
3
23
5
3
1
9
a
a
a a
2.0
0
1
1
1
2.7
0
2
1
0
3.7
2
1
0
0
3.7
2
1
a a
0
0
3.3
1
3
0
0
3.0
1
3
1
a
11
45
2
58
1
2
0
3
0
1
0
1
3.1
3.0
2.0
3.0
11
21
0
32
16
52
68
6
19
2
27
1
0
0
1
3.4
3.2
4.0
3.3
15
31
2
48
17
52
0
69
1
8
0
9
0
1
0
1
1
2
1
0
3.5
2
2
0
0
3.5
2
2
0
a
2.5
0
2
2
0
2.5
0
3
0
1
3.3
1
3
0
0
4.1
3.0
0
3
0
0
2.8
1
1
2
0
3.0
1
2
1 0
29.6
3.4
3.1
5
7
2
1
2.7
2
8
4
1
3.1
2
12
1 0
25.8
4.0
3.4
101
96
9
2
3.0
55
108
40
5
3.3
85
109
"
0
0
Front-End Processors
Comten 3650
Comten 3670
Comten 3690
Subtotals
IBM 3704
IBM 3705
IBM System 7
Subtotals
All Others
TOTALS
a
a
1
a
a a
a
0
a
0
a
0
0
0
13
0
",
1
'User ratings report the number of users responding Excellent (E), Good (G), Fair (F), and Poor (P) for each category. The weighted averages (WA) were calculated by weighting
the four ratings on a 4, 3, 2, 1 basis.
"The Weighted Average is considered invalid if based on fewer than three responses.
1:>- Some of the items indicated in the accompanying charts
are self-evident; others offer information of a subtle
nature. The following discussion highlights some of the
subtleties.
Network Arrangements Supported
an important consideration, especially for fallback considerations. Usually, a small number represents a special
direct connection. A high number indicates that the
connection is via a regular communications line port and
does not mean that the vendor is suggesting that so
many connections to one or more host is a designed
capability.
Most of the equipment listed herein, when operating
as a front-end, is restricted to supporting the host computer systems of specific mainframe manufacturers. However, some vendors include in their product lines front
ends that can be customized; such equipment is well
represented in the charts. Not included is the myriad of
older mainframes that have been fully written-off from
an accounting standpoint and, therefore, can be offered
at low enough prices to justify tailoring and dedicating
the overqualified equipment to function as a front-end.
When the number of pollable stations on one line is'''),''
the system, as standard, supports only point-to-point
terminal arrangements. When the communications processor functions as a remote concentrator, the number of
host/ concentrator connections is also a consideration
from a network standpoint. Again, the number of connections permitted is primarily an indication of whether
a special interface or a regular communications line
interface is used.
From a network arrangement standpoint, the number of
direct connections a front-end can support to one host
and the number of hosts a front-end can support become
As the data communications industry continues to make
strides towards standardization, the network architecture
that a free-standing communications processor supports 1:>-
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
/
C13-010-111
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
USERS' RATINGS OF COMMUNICATIONS PROCESSORS/CONTROLLERS (Continued)
(
User Ratings'
Hardware
Reliability
Processor/Controller
Quality
of
Maintenance
Promptness
of
Maintenance
G
F
P WA
E
G
F
2
8
1
0
0
1
0
0
0
3.2
3.4
"
1
15
1
4
8
1
0
2
0
0
1
0
3.6
3.3
"
3
19
0
3.6
22
11
1
0
3.4
17
13
2
1
3.4
Burroughs B874
Burroughs DCP
Subtotals
3.8
3.7
3.7
3
2
5
1
1
2
0
0
0
0
0
0
3.0
3.3
3.1
1
1
2
2
2
4
1
0
1
0
0
0
CCI CC-8
3.0
1
2
1
0
2.5
0
2
2
Comten 3650
Comten 3670
Comten 3690
Subtotals
3.6
3.6
3.5
3.6
11
6
2
19
6
4
2
12
1
0
0
1
0
0
0
0
3.3
3.2
3.5
3.3
7 10
2
8
2
2
11 20
DEC. all
3.0
1
1
1
0
2.7
0
DPF, Inc. CMC
3.7
2
1
0
0
2.7
Honeywell 66XX
3.6
3
2
0
0
IBM 3704
IBM 3705
IBM System 7
Subtotals
3.8
3.7
3.3
3.7
26
63
2
91
6
29
0
35
1
0
1
2
In Courier VTLC
2.3
0
2
Memorex 1380
3.0
0
Periphonics T-Comm 7
3.0
All Others
TOTALS
WA
E
IBM 270X
Memorex 1270
Sperry Univac, all
3.6
3.7
TOTALS
P WA
E
G
F
Mfr:s
Technical
Support
Mfr.'s
Software
P WA
E
F
G
P WA
E
G
F
P
Hard-Wired Controllers
2
3
13 10
1
1
0
2
0
0
1
0
3.0
1.7
17
13
2
3.0
3.3
3.1
1
1
2
2
2
4
0
2.5
0
1
0
0
1
0
0
0
0
2
1
1
0
2.8
1
3
0
0
0
0
3.5
3.3
2.7
3.3
20
42
0
62
9
33
2
1
1
2.5
0
2
2
4
0
0
2.5
0
2
2
1
0
2.3
0
3.1
7
3
5
0
2.6
3.6
131
65
11
2
3.2
5
0
0
0
2
1
0
1
1
3.4
3.1
"
0
0
0
1
23
0
5
3
2
3.1
1
0
1
0
0
0
3.3
4.0
3.6
2
3
5
1
0
1
1
0
1
0
0
0
2.0
3.0
2.4
2
2
0
2.3
0
1
3
0
3.2
3.0
3.5
3.2
6 10
1
8
2
2
9 20
2
1
0
3
0
0
0
0
2.9
3.0
3.0
3.0
3
1
0
4
11
8
4
23
4
1
0
5
0
2.3
0
1
2
0
1.5
0
0
2
0
2.7
1
0
2
0
3.0
0
0
1
2.8
1
3
0
1
3.0
4 0
17 0
1 0
22 0
3.4
3.3
2.7
3.3
18
42
1
61
11
36
0
47
4
12
2
18
0
1
0
1
0
2.8
0
3
1
2
0
2.8
0
3
2
1
1
2.5
0
2
8
2
3
2.5
79
89
36
5
3.1
"
1
11
1
1
4
1
0
1
0
13
6
1
0
1
1
1
1
2
2
1
3
1
0
1
2.0
0
0
4
0
0
0
0
0
2.3
2.6
3.0
2.5
1
0
1
2
6
6
2
14
9
4
1
14
2
0
0
2
1
1
1.3
0
0
1
2
1
0
0
3.3
1
2
0
0
1
3
1
0
2.8
1
2
2
0
3.0
2.9
2.3
2.9
6
12
0
18
23
58
1
82
2
18
2
22
2
2
0
4
2.7
2.9
2.0
3.1
5 16
9
19 45 24
1
1
0
24 62 34
3
4
1
8
0
3.5
1
1
0
0
1.7
0
1
0
2
1
0
2.0
0
1
2
1
2.5
0
3
0
1
3
0
1
3.0
1
2
1
0
2.5
0
2
2
0
3
5
3
4
2.5
2
4
5
2
2.6
2
8
0
4
77
91
33
7
2.9
32
119
41
8
2.7
31
96
"
3
8
0
11
Front-End Processors
1
44
60 20
'User ratings report the number of users responding Excellent (E), Good (G), Fair (F), and Poor (P) for each category. The weighted averages (WA) were calculated by weighting
the four ratings on a 4, 3. 2, 1 basis.
"The Weighted Average is considered invalid if based on fewer than three responses.
t:> will take on more and more importance, (The architecture of a front-end must conform to the host's architecture.) Underscoring this belief is the fact that two major
mainframe manufacturers chose to list only their newest
communications processor in the accompanying charts. In
both cases, it is the only such item in their product lines
that conforms to their new network architectures.
Since the prime purpose in burdening communications
lines around the world with data is to either retrieve
information or to add to the store of information, the
nature of the data base system supported should not be
overlooked, Actually it represents the "end" for which
one selects a "(communications processor) means", The
name of any data base system supported is listed for each
communications processor. Of course, a buyer may be
already committed to a file maintenance or data base
system and not be interested in this type of support.
MARCH 1980
As would be expected, the tasks performed by each of the
operating systems supplied with the hardware will vary.
The name of the operating system is noted so that the
reader will know what to look for in detailed reports on
such software offerings.
Properly depicting communications line capacity is the
most difficult and the most controversial entry in the
accompanying charts. It would be very easy to utilize a
full page to describe the line capacity capabilities of just
one processor. As a reasonable alternative, Datapro
decided to show the number of half-duplex lines that
can be physically attached to the processor presuming
all lines were operating within a given speed range. Three
ranges were chosen to represent low, medium, and high
line speeds. The ranges chosen were: up to 1800 bps,
2000 to 9600 bps, and over 9600 bps. The number of low
speed lines usually represents the physical and through- t:>
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-112
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
1:> put limitation for asynchronous lines. Generally, the
medium and high speed lines represent the outer limits of
the throughput capabilities. The effect of using fullduplex lines and an estimate of raw throughput capacity
are also indicated.
The terminal protocols supported by the processors are
listed. Even though the protocols supported are mostly
dependent upon the marketing philosophy of the vendors, the large number of vendors supporting the standardized bit-oriented protocols is an indication of things
to come.
The charge for the processor's communications operating
software is given, when separately priced.
The date of first delivery is the date of the first production delivery.
With 84 communications processors to choose from, there
should be an offering for every need, whether the network
is a fully distributed network or a classic master / slave
network.
Suppliers
Processor Characteristics
The communications processor's internal characteristics
give a general "feeling" for the equipment's throughput
capabilities. Hard-wired equipment and some programmable processors will receive a "No" to the question: "Is
the processor microprogrammable by the manufacturer?"
A "yes" means that the processor has firmware, or
microcoded, stored logic. If the processor is programmable by the user, one can expect the capability for user
implementation of specific system requirements not supported by vendor software, including applicationsoriented functions. Main-memory cycle time, main
memory word size, and main memory storage capacity
offer a very general "feel" for throughput speed possibilities. However, sophisticated internal architecture may
enable the processor to be many times faster than
another processor with the same cycle time and word
size. That is another reason why we emphasize that a
detailed analysis is necessary, once the initial selection
is made from the charts.
The manner of data transfer between memory and communications lines, memory and mass storage, and memory and other supported peripherals becomes critical as
volume requirements rise arid/ or response times are
reduced. For high-speed, high-volume transmissions, Direct Memory Access transfers instead of character interrupt transfers become mandatory for reasonable throughput rates.
The "Turnkey systems" entry informs potential users
whether or not the vendor is willing to provide a
complete system, including all applications software.
Listed below for your convenience in obtaining additional
information are the full names and addresses of the 39
suppliers whose 84 products are summarized in the
following charts.
Action Communications Systems, Inc., 440 I Beltwood Parkway
South, Dallas, Texas 75234. Telephone (214) 386-3500.
ASI Teleprocessing Inc., 10 I Morse Street, Watertown, Massachusetts 02172. Telephone (617) 923-1850.
Austron Data Systems, Inc., 1915 Kramer Lane, Austin, Texas
78758. Telephone (512) 836-3523.
BBN Computer, 33 Moulton St., Cambridge, Massachusetts 02138.
Telephone (617) 491-1850.
Braegen Corporation, 20740 Valley Green Drive, Cupertino, California 95014. Telephone (408) 255-4200.
Burroughs Corporation, Burroughs Place, Detroit, Michigan 48232.
Telephone (313) 972-7000.
Cencom Systems, Inc., (formerly Omnus Computer Corporation),
4350 East West Highway, Suite 1103, Bethesda, Maryland 20014.
Telephone (301) 652-2730.
Chi Computer Products Division of ECOTRAN-CHI Corporation,
11000 Cedar Avenue, Cleveland, Ohio 44106. Telephone (216)
229-6400.
Codex Corporation, 20 Cabot Blvd., Mansfield, Massachusetts
02048. Telephone (617) 364-2000.
Computer Automation Inc., 2181 Dupont Drive, Irvine, California
92713. Telephone (714) 833-8830.
Computer Communications, Inc., 2610 Columbia Street, Torrance,
California 90503. Telephone (213) 320-9101.
Comten, Inc.: see NCR Comten, Inc.
Pricing and Availability
The prices depicted in the charts represent a range of
typical configurations. The magnitude of the dollars
gives a ball-park indication of the expansion capabilities
of the equipment and should not be used to determine
price/performance. Only a detailed price for a configuration satisfying specific requirements would give
such an indication.
The absence of an entry for the monthly rental price
indicates that the vendor offers his equipment on a purchase-only basis.
Control Data Corporation, 8\00 34th Avenue South, P.O. Box 0,
Minneapolis, Minnesota 55440. Telephone (612) 853-8100.
Digital Communications Associates, Inc., 135 Technology Park!
Atlanta, Norcross, Georgia 30092. Telephone (404) 448-1400.
Digital Communications Corp., 11717 Exploration Lane, Germantown, Maryland 20767. Telephone (301) 428-5500.
DPF Incorporated, 141 Central Park Avenue South, Hartsdale,
New York \0530. Telephone (914) 428-5000.
Franklin Systems Corporation, 733 Lakefield Road, Westlake
Village, California 91361. Telephone (805) 497-7755.
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
1:>
C13-010-113
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
1:>
General Automation, 1055 S. East Street, Anaheim, California
92805. Telephone (714) 778-4800.
Paradyne Corporation, 8550 Ulmerton Rd., Largo, Florida 33541.
Telephone (813) 536-4771.
GTE Telenet Communications Corporation, 8330 Old Courthouse
Road, Vienna, Virginia 22180. Telephone (703) 827-9200.
Periphonics Corporation, 75 Orville Drive, Bohemia, New York
11716. Telephone (516) 567-1000.
Honeywell Information Systems, Inc., 200 Smith Street, Waltham,
Massachusetts 02154. Telephone (617) 890-8400.
Raytheon Data Systems, Minicomputer/ Communications
Division, 360 Forbes Boulevard, Mansfield, Massachusetts 02048.
Telephone (617) 339-5731.
IBM Corporation, Data Processing Division, 1133 Westchester
Avenue, White Plains, New York 10604. Telephone (914) 696-1900.
Intelligent Terminals, Inc., One First Street, Los Altos, California
94022. Telephone (415) 948-7033.
ITT Courier, 1515 W. 14th Street, Tempe, Arizona 85281. Telephone (602) 275-7555.
Lemcom Systems, Inc., 2104 W. Peoria Ave., Phoenix, Arizona
85029. Telephone (602) 944-1543.
Memorex Corporation, Communications Group, 18922 Forge
Drive, Cupertino, California 95014. Telephone (408) 996-9000.
Modular Computer Systems, Inc., 1650 W. McNab Road, Fort
Lauderdale, Florida 33310. Telephone (305) 974-1380.
NCR Corporation, 1700 S. Patterson Blvd., Dayton, Ohio 45479.
Telephone (513) 449-2000.
NCR Comten, Inc., 1950 W. County Road B-2, St. Paul, Minnesota
55113. Telephone (612) 633-8130.
Rockwell International, Collins Communication Switching Systems
Division, P.O. Box 10462, Dallas, Texas 75207. Telephone (214)
996-2336.
Sperry Univac (division of Sperry Rand Corporation), P.O. Box
500, Blue Bell, Pennsylvania 19424. Telephone (215) 542-4011.
Tandem Computers, Inc., 19333 Valleo Parkway, Cupertino, California 95014. Telephone (408) 725-6000.
Telcon Industries, Inc., 1401 Northwest 69th Street, Fort Lauderdale. Florida 33309. Telephone (305) 971-2250.
Telefile Computer Products, Inc., 17131 Daimler St.. Irvine, California 92714. Telephone (714) 557-6660.
Telenet Communications Corp., See GTE Telenet Communications
Corp.
TRAN Telecommunications Corporation, 2500 Walnut Avenue.
Marina Del Rey. California 90291. Telephone (213) 822-3202.
Norfield Electronics, Inc.: See TRT Data Products.
TRT Data Products, Norfield Communications Division, 3 Depot
Place, E. Norwalk, Connecticut 06855. Telephone (203) 853-2777.
North American Philips Corporation, Communications Systems
Division, 55 Knightsbridge Road, Piscataway, New Jersey 08854.
Telephone (201) 457-0400.
Westinghouse Canada Incorporated, Electronic Systems Division,
P.O. Box 5009, Burlington, Ontario, Canada L7R 4B3. Telephone
(416) 528-8811.0
(
MARCH 1980
© 1980 DATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-114
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
~
Action
Communications
Systems
TELECONTROLLER
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major
vendors
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
Estimated processor throughput, chars.lsec.
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X.25-Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Yes
16
1
512 per system
Yes
16
16
32
Yes
No
No
Yes
Yes
ASI
Teleprocessing
Network Node
ASI
Teleprocessing
Front End
IBM, DEC,
Burroughs
Yes
ASI
Teleprocessing
Store Data
IBM, DEC,
Burroughs
Yes
IBM 5/360, S/370,
4300 Series, 303X,
& channel-compat.
equivalents
No
Yes
1
1
256
No
-
-
1
32 per line
No
-
1
32 per line
Yes
64
64
32
Yes
-
No
-
-
Yes
-
8500
Stand-alone
-
-
Austron
-
Yes
-
-
No
-
-
ASIDOS
Yes
ASI DOS
Yes
RT-11
No
No
64
64
64
56K
None
16
16
16
9600
None
64
64
64
56K
None
None
25
16
8
9600
None
2500
50K bytes
50K bytes
-
1 million
Yes
Yes
No
No
No
8A1, 83B3, SITA,
ARINC, TWX,
TELEX, Dial-in/out
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
Yes
No
Yes
No
Yes
No
No
No
No
64
64
-
-
-
9600
-
'-.
No
Yes
1
16
256K bytes
No
No
1
16
256K bytes
0.35
16
65K words
No
Yes
1
16
256K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Interrupt
DMA
DMA
DMA, interrupt
DMA
DMA. interrupt
DMA. interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA. interrupt
Interrupt
DMA
DMA. interrupt
Yes
No
0.6
Yes
Yes
16
64K bytes
Back-up and diagnostic peripherals supported
Mag. tape
Disk, diskette
Disk, diskette
Disk, diskette,
mag. tape
Diskette
Communications operating software:
Availability
Generated by
Included in price
Comm. processor
Included in price
Comm. processor
Included in price
Comm. processor
Included in price
Comm. processor
Included in price
Comm. processor
Additional software supported
None
Assembler, utilities
Assembler, utilities
Assembler, utilities
Diagnostic and test
routines
Turnkey systems available
Yes
Yes
Yes
Yes
Yes
$140,000 to
$500,000
$50,000 to
$100,000
$75,000 to
$150,000
-
$70,000 to
$150,000
-
-
-
$50,000 to
$70,000
-
-
-
2175
2176
2176
20
ASI/IBM/DEC
10
ASI/IBM/DEC
10
ASI/DEC
-
Packet switch
application-transparent communications; full turnkey
system
Packet switch
application-transparent communications; full turnkey
system
Multi-terminal
interfacing for IBM,
NCR. DTS, etc.; full
tu rnkey system
Designed to emulate standard IBM
device while driving non-standard
remote or local
peripherals, terminals, etc.
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
1971
83
Action or thi rd
party
Telecontroller is a
store-a nd-forward
message switching
system with frontend capability
1"-
-
-
12175
Austron
/'
-
~.
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
C13-010-115
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
(
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Yes
X.25
DEC-lO, DEC-ll
CDC 6000 Series,
Honeywell Multi's,
IBM 5/360 &
5/370
Yes
20
2
256
Yes
256
20
256
Yes
ARPANET, X.25
No
Stand-alone
Yes
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
25
16
8
9600
None
256
256
256
38.4K
None
Estimated processor throughput, chars./sec.
1 million
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations poll able on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
IBM 51360, S/370,
4300 Series, 303X,
& ct,annel-compat.
equivalents
IBM S/360, S/370,
4300 Series, 303)('
& channel-compat.
equivalents
Yes
1
1
256
No
Yes
2 or more
2 or more
256
No
-
-
-
No
-
-
-
BBN Computer
C-30
Braegan Corp.
B40
Computer
DEC-l0, DEC-ll,
CDC 6000 Series,
Honeywell Multi's,
IBM 5/360 & 5/370
IBM S/360 &
S/370, 303X, 4300
Series and compatible systems
Yes
4
1
256
Yes
256
4
256
Yes
ARPANET, X.25
Yes
8
4
32
Yes
6
6
32
Yes
Braegen/IBM
Braegen Editor
Braegen O.S.
BBN Computer
Pluribus
Austron
8900
Austron
8800
MANUFACTURER AND MODEL
-
-
UNIX
Yes
-
230.4K
Capacity halved
128
128
80
56K
Capacity halved
6
6
6
19.2K
Capacity halved
1 million
110K
30K
-
Yes
No
No
No
No
DEC DRll 16-bit
parallel interface
Yes
No
Yes
No
Yes
Any protocol supported by LSI-ll
module
Yes
Yes
No
No
Yes
IBM 2741
Yes
Yes
No
No
Yes
IBM 2741
No
Yes
No
No
No
Braegan FDLC
Yes
Yes
Yes
See comments
Yes
Yes
Yes
No
0.7
0.54
0.6
8
64K bytes
Yes
Yes
1.6
16
256K bytes
16
1024K bytes
20
1024K bytes
8
256K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA
DMA
DMA, interrupt
Interrupt
DMA. interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
Back-up and diagnostic peripherals supported
Diskette
Disk, diskette, mag.
tape
Disk, cassette
Disk, cassette
Diskette, disk
Communications operating software:
Availability
Generated by
Included in price
Cross compiler
Included in price
Comm. processor
Incl uded in price
Comm. processor
Separately priced
Comm. processor
Separately priced
Host
Additional software supported
Diagnostic and
test routines
Diagnostic and test
routines
-
Bell Lab's 'C',
FORTRAN 77,
UNIX utilities
Turnkey systems available
Yes
Yes
Yes-for packet
switch node systems
$22,000 to
$3,000 to $20,000
$100,000 to
$300,000
Yes-for packet
switch node
systems
$25,000 to
$60,000
Screen editor, 3270
emulator, remote
job entry, local job
entry
Yes
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLe)
IBM SDLC
X.25-Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
1.0
$30,000
600
400
300
-
-
$14,000 to
$120,000
-
-
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
$5,000
-
-
7/80
9175
-
2/80
Austron
Austron, DEC
35
BBN
5
BBN
$45-$600
1974
Over 100
Braegen Corp.
COMMENTS
Designed for CPUto-CPU interface.
IBM side is programmable to
emulate any standard IBM device
Provides direct
channel interface
between IBM CPU
and communications
lines, X.25 network,
non-standard peripherals, other
CPU's, etc. Unit is
DEC LSI-ll based
Primarily marketed
as a turnkey packet
switch network
node. User programming of the
Pluribus system is
not generally sup- .
ported by BBN.
Multi-host frontend system; complete packet network system
Monthly rental (2-yr. lease, including maint., range)
MARCH 1980
-
-
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
11179
$300 to $3,000
Concurrent support
of local 3270, remote 3270, remote
job entry, local job
entry, screen editor,
multiple hosts
C13-010-116
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
Burroughs
B 867
MANUFACTURER AND MODEL
Burroughs
B 874
Cencom
CSI
Burroughs
B877
Chi Computer
Products
CCP
1000/20001
3000
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
All Burroughs, IBM
Burroughs
5/360, 5/370
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
No
-
Yes
2
2
100
Yes
32
32
100
Yes
Burroughs BNA
No
MCS
All Burroughs,
IBM 5/360, 5/370
Univac 1100 Series
Univac 1100
Series
No
Yes
8
16
256
Yes
192
8
256
Yes
Avail. upon request
Not currently avail.
ECES
Yes
Yes
8
8
Term.-depend.
Yes
Unlimited
Unlimited
Term.-depend.
Yes
RADANET
-
-
Yes
7
7
100
Yes
BurrQughs BNA
No
MCP
Yes
-
Yes
32
32
100
Yes
Burroughs BNA
No
MCP
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest Ii ne speed supported, bits per seeond
Effect on line capacity, if all lines are full-duplex
7
7
2
56K
None
32
32
4
19.2K
None
32
32
4
56K
None
128 to 256
80 to 128
60 to 80
lOOK
None
32
50K bytes
None
Estimated processor throughput, chars.lsee.
-
-
-
50K
25K
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X.25-Packet level
Other
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Avail. upon request
Avail. upon request
Ul004INTR
Yes
Yes
No
No
Yes
No
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Back-up and diagnostic peripherals supported
Communications operating software:
Availability
Generated by
-
CHIOPS
Yes
100
64
-
-
Yes
Yes
1
16
114K bytes
Yes
Yes
1
16
96K bytes
Yes
Yes
1
16
147K bytes
Yes
Yes
0.8
16 or 20
1M bytes
Yes
Yes
0.75
32
1M bytes
DMA
DMA
Interrupt
DMA
DMA
Interrupt
DMA
DMA
Interrupt
DMA, interrupt
DMA
DMA, interrupt
-
Disk, diskette,
mag. tape
-
Disk, diskette, mag.
tape
Disk
Diskette, cassette
Separately priced
Separately priced
Host
~parately
-
/
DMA, interrupt
-
-
-
-
Additional software supported
COBOL, RPG,
MPL, PSL,
GEMCOS
-
COBOL, RPG,
MPL, PSL,
GEMCOS
Separately priced
Host & comm.
proc.
TIP, message
switch, store &
forward
Turnkey systems available
Yes
Yes
Yes
Yes
Yes
$85,000 to
$950,000
$2,000 and up
$50,000 to
$300,000
Contact vendor
PRICING AND AVAILABILITY
Purchase price (system ra nge)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
priced
Sepa rately priced
$20,000 and up
$20,000 and up
$21,000 and up
$596 (5-yr.) and up
$1,000 and up
$564 (5-yr.) and up
$2,500
$72
$2,250
$200
1977
Yes
$2,500
$72
-$250 to $800
Contact vendor
Contact vendor
8177
-
8174
8/72
38
Cencom
Third party
8177
-
-
Burroughs
Burroughs
Burroughs
Based on 1979
information
Based on 1979
information
Based on 1979
information
30
Supports modular
line handlers, variable speeds, standard Univac protocols plus most IBM
protocols. Handles
up to 8 CPUs
through 1 CSI
front-end
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
C13-010-117
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NEiWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
It
Computer
Automation. Inc.
Naked Mini
LSI-2/3 8< NM4
Computer
Automation. Inc.
SyFA System
1000
Codex
6520
MANUFACTURER AND MODEL
Computer
Communications
CC-BR
Computer
Communications
CC-B
IBM S/360 &
S/370 & compatible systems
IBM S/360.
S/370. & 303X;
ICL; X.25-compatible
Application dependent
IBM S/360.
S/370. 303X.
434X; Itel; Amdahl;
compatibles
Yes
4
4
Device dependent
No
-
No
Yes
32
32
128
Yes
32
32
128
No
Yes
4
4
Unlimited
No
IBM S/360.
S/370. 303X.
434X; Itel; Amdahl;
compatibles
No
-
Yes
16
16
Unlimited
No
No
Yes
16
1
15
Yes
SNA. X.25
SyClops
SyClops
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported. bits per second
Effect on line capacity. if all lines are full-duplex
240
240
Varies
230.4K
None
2
2
2
19.2K
None
32
32
Application depend.
19.2K
None
240
240
240
230.4K
None
64
64
64
230.4K
None
Estimated processor throughput. chars.lsee.
Up to 200K
-
600K
200K
200K
Yes
Yes
No
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC. BDLC)
IBM SDLC
X.25-Packet level
Other
-
No
-
No
-
-
-
-
Yes
No
No
-
-
Datasdpeed 40/4,
PARS, others
-
-
-
Yes
Yes
No
No
Yes
SABRE,PARS
Yes
Yes
0.54
16
64K bytes
Yes
Yes
0.15
16
128K to 304K
bytes
Yes
Yes
0.3
16
64K bytes
Yes
Yes
0.3
16
256K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA, interrupt
DMA. interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
Yes
Yes
.55
16
64K bytes (LSI2/3); 128K bytes
(NM4)
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA
DMA. interrupt
DMA. interrupt
DMA
DMA, interrupt
Back-up and diagnostic peripherals supported
Diskette, disk
Disk, tape
Disk, diskette, mag.
tape
Communications operating software:
Availability
Generated by
Included in price
Host
Separately priced
Comm. processor
-
Disk, mag. tape,
card reader, line
printer
InCluded in price
Host
Disk, mag. tape,
card reader, line
printer
Separately priced
Host
Additional software supported
-
SyBOL; utilities to
support business
applications
-
Utilities
Utilities
Turnkey systems available
Yes
Yes, some application packages
Yes
Yes
Yes
$41,000 to
$200,000
$1,350 to $7,000
$102,000 & up
$30,000 & up
$39,430 & up
$39,200 & up
Via third party only
-
$724 & up
$1,207 & up (3-yr.)
-
$750
$125
1979
3
CCI
No
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
(
-
Contact vendor
Separately priced
Contact vendor
-
-
-1974; 1977 (NM4)
-
350
Computer Automation
Multifunction interactive distributed network
system
-
1/80
Codex Corp.
Codex-enhanced
version of Computer Communications, Inc.'s CC-8;
Multiplexed Network Interface
(MNI) provides networking capabilities
with Codex 6000
Series Intelligent
Network Processors
5/76
Various service
companies
----
MARCH 1980
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
No
No
Yes
-
1976
85
CCI
Capabilities include
auto-poll; auto
ba ud rate select,
auto-dump; autoload etc.; terminal
initiated host a ppl ication selection;
error control/correction
Low cost intelligent remote concentrator
C13-010-118
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM 5/360,
5/370, 303X,
434X; Itel; Amdahl;
compatibles
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
Computer
Communications
CC-80RC
Computer
Communications
CC-80
Yes
7
7
Unlimited
Yes
32
32
Unlimited
Yes
CCI; NCS
No
CCI; NCS
Yes
1,232
1,232
1,232
230.4K
None
IBM 5/360,
5/370, 303X,
434X; Itel; Amdahl;
compatibles
IBM 5/360,
5/370, 303)('
434X; Itel; Amdahl;
compatibles
No
No
Yes
7
7
Unlimited
Yes
32
32
Unlimited
Yes
CCI; NCS
No
CCI; NCS
Yes
240
240
240
230.4K
None
1,232
1,232
1,232
230.4K
None
Yes
32
32
Unlimited
No
-
Computer
Communications
CC-85AC
Computer
Communications
CC-85
Computer
Comunications
CC-8000
IBM 5/360,
5/370, 303X,
434X; Itel; Amdahl;
compatibles
IBM 5/360,
5/370, 303)('
434X; Itel; Amdahl;
compatibles
No
Yes
7
7
Unlimited
Yes
32
32
Unlimited
Yes
CCI; NCS
No
CCI; NCS
Yes
-
-
Yes
32
32
Unlimited
Yes
CCI; NCS
No
CCI; NCS
No
240
240
240
230.4K
None
240
240
240
50K
None
200K
200K
400K
400K
5000
Yes
Yes
Yes
Yes
No
Yes
Yes
No
Yes
SABRE, PARS
Yes
Yes
No
No
Yes
SABRE,PARS
No
Yes
SABRE, PARS
No
Yes
SABRE, PARS
Yes
Yes
No
No
Yes
SABRE, PARS
Yes
Yes
0.3
16
512K bytes
Yes
Yes
0.3
16
512K bytes
Yes
Yes
0.15
16
512K bytes
Yes
Yes
0.15
16
512K bytes
Yes
Yes
0.3
16
512K bytes
DMA. interrupt
DMA
DMA. interrupt
DMA, interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA. interrupt
DMA. interrupt
DMA
DMA, interrupt
Communications operating software:
Availability
Generated by
Disk, mag. tape,
card reader, line
printer
Separately priced
Host
Disk, mag. tape,
card reader, line
printer
Sepa rately priced
Host
Disk, mag. tape,
card reader, line
printer
Separately priced
Host
Disk, mag. tape,
card reader, line
printer
Separately priced
Host
Disk, mag. tape,
card reader, line
printer
Separately priced
Host
Additional software supported
Utilities
Utilities
Utilities
Utilities
Utilities
Turnkey systems available
Yes
Yes
Yes
Yes
Yes
$98,750 & up
$98,750 & up
$128,750 & up
$134,750 & up
$148,750 & up
$2,546 & up (3-yr.)
$2,546 & up (3-yr.)
$3,696 & up (3-yr.)
$3,835 & up (3-yr.)
$3,546 & up (3-yr.)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
$1,500
$250
1975
285
CCI
$1500
$250
1979
5
CCI
$1,500
$250
1979
20
CCI
$1,500
$250
1980
1
CCI
Varies
Varies
1976
20
CCI
COMMENTS
Network controller
offering independent front-end
processing and
true networking in
the emulation
environment
High performance
programmable remote concentrator
Distributed microprocessor architecture used to create
a very high-speed
independent frontend processor/
network controller
Distributed microprocessor architecture, higher sustainable throughput
for remote concentration
Custom message
switching, multicomputer config.,
fractional redundancy, NLETS/
NCIC interface
Estimated processor throughput, chars./see.
Terminal protocols supported:
ASCII, Async. (Teletype)
.IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X,25-Packet level
Other
No
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Back-up and diagnostic peripherals supported
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
No
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
i
I
MARCH 1980
C13-010-119
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
Control
Data Corp.
2551-1
Control
Data Corp.
2551-2
CDC 6000, Cyber
70, Cyber 170, &
Cyber 170 700
Series
CDC 6000, Cyber
70, Cyber 170 &
Cyber 170 700
Series
Yes
1
2
Protocol-depend.
Yes
8
8
1 RC per trunk
No
Yes
1
2
Protocol-depend.
Yes
8
8
1 RC per trunk
No
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operati ng system
As a store-and-forward message switching processor
~
~
~
~
Digital
Digital
Digital
Communications Communications Communications
Corp.
Assoc.
Assoc.
CP 9000
System 250/10
System 150
Network Processor Network Processor
Most manufacturers
DEC
No
Yes
31
6
~
~
~
Yes
128
32
Varies
Yes
INA
~
~
Yes
128
32
Varies
Yes
INA
~
Any computer
system via serial
data interfaces
No
~
~
~
Yes
Unrestricted
Unrestricted
Unrestricted
Yes
Custom
No
EX 9000
No
CCP
No
CCP
No
Proprietary
No
Proprietary
No
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
32
32
4 @ 19.2K; 2 @ 56K
56K
None
254
254
4@ 19.2K; 2 @ 56K
56K
None
128
24
128
4
9600
None
9600
None
480
480 to 240
60
56K
None
Estimated processor throughput, chars.lsec.
20K
20K
4000
4000
Up to 700K
Yes
Yes
Yes
Special
Yes
Mode 4A, 4C
HASP M-L
Yes
Yes
Yes
Special
Yes
Mode 4A, 4C
HASP M-L
Yes
No
No
No
No
IBM 2741/3767,
83B3
Yes
No
No
No
No
IBM 2741/3767,
83B3
Yes
Yes
Yes
Yes
Yes
Yes (custom)
Yes
Yes
0.55
18
262K bytes
Yes
Yes
0.55
18
262K bytes
Yes
Yes
1.5
12
32K words
Yes
Yes
1.5
12
32K words
Yes
Yes
0.5
8
512K bytes
DMA, interrupt
Interrupt
Interrupt
Interrupt
DMA, interrupt
DMA, interrupt
Interrupt
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC (UDLC, BDLC)
IBM SDLC
X25~Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
~
~
--
Interrupt
Interrupt
Interrupt
Back-up and diagnostic peripherals supported
Cassette tape
Cassette tape
Diskette
Diskette
Diskette
Communications operating software:
Availability
Generated by
Separately priced
Host
Separately priced
Host
Included in price
Comm. processor
Included in price
Host
Separately priced
Host
Additional software supported
PASCAL, Network
Definition Lang.
PASCAL, Network
Definition Lang.
DEC OS/8
DEC OS/8
LOGOS compiler,
program debugger
Turnkey systems available
Yes
Yes
Yes
Yes
Yes
$49,000 to
$74,000
$1,650 to
$2,300 (3-yr.)
$3,940
$120 + $570 OTC
6/75
Over 200
Control Data Corp.
$59,000 to
$190,000
$2,000 to
$8,500 (3-yr.)
$3,940
$120 + $570 OTC
6/75
Over 400
Control Data Corp.
$20,000 & up
Contact vendor
Dema nd-driven
multiplexing; pro-
Demand-driven
multiplexing;
programmed in
high-level lang.;
extensive diagnostics; fieldupgradable from
2551-1
DMA, interrupt
~
~
PRICING AND AVAILABILl1Y
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-ane-time charge
Communications operating
Date of first delivery
Number installed to date
Serviced by
COMMENTS
sohware~monthly
charge
grammed in
high-level lang.;
extensive diagnostics
~
$11,500&up
~
~
~
~
~
Contact vendor
~
~
6/74
75
7/73
7/77
40
Over 300
DCC
Supports host
selection, port contention; full line
and modem control
facilities
Supports host
selection, port contention; full line
a nd modem control
facilities
Multi-microprocessor -based sys. (up
to 62 mpu's); can
be programmed to
perform any comm.
processing function; full on-line
redundancy capability; compa!. with
CM 9100
DCAIDEC
DCAIDEC
I
MARCH 1980
Contact vendor
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPR9DUCTION PROHIBITED
C13-010-120
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
Digital
Communications
Corp.
CM 9100
DPF
Incorporated
CMC4
DPF
Incorporated
CMC32
No
IBM S/360,
S/370, 30xx,
43XX; AS; Amdahl;
Magnusson; CDC
Omega, etc.
Yes
IBM S/360,
S/370, 30xx,
43XX; AS; Amdahl;
Magnusson; CDC
Omega; etc.
Yes
1
1
-
1
2
4096
No
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Any computer
system via serial
data interfaces
NElWORK ARRANGEMENTS SUPPORTED
As a front -end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Yes
2 (1 back-up)
4096
No
1
Franklin systemS(k
Corp.
'.. /
DMX
I~
Franklin Systems
Corp.
ADS
Most manufacturers
Most manufacturers
Yes
Yes
5
5
5
5
5
5
Yes
Yes
5
5
5
5
3
3
RPQ
RPQ
Yes
Yes
No'
RPQ
RPQ
FSC
Yes
FSC
Yes
Communications line capacity
No. of halfne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
-
Franklin Systems
Priced as a turnkey
system including
CRT/keyboard,
printer, 30M disk
DMA, interrupt
(MARCH 1980
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
DMA. interrupt
DMA. interrupt
-
C13-010-122
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
GTE Telenet
TP 4000H &
TP4000S
GTE Telenet
TP4000C
(:!:'
Honeywell
DATANET
Honeywell
DATANET
355
Honeywell
DATANET
6641
6612/66241
6632
Virtually all
manufacturers
Virtually all
manufacturers
Honeywell Series
600, 6000
Honeywell Series
60, Level 66/68
Honeywell DPS,
DPS-8
Yes
256
None
Yes
256
None
Yes
1
2
32
No
Yes
1
2
32
No
Yes
1
2
32
No
-
-
-
-
Yes
256
256
Yes
256
256
-
-
-
-
Yes
Yes
TPOS
No
No
No
No
-
-
-
-
Yes
Yes
Yes
9600
None
256
256
136
56K
None
96
96
96
50K
None
8/32/96
8/32/96
8/32/96
50K
None
8
8
8
12K
None
Estimated processor throughput, chars.lsec.
128K
230.4K
-
-
-
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X.25---Packet level
Other
Yes
Yes
No
No
No
-
Yes
Yes
Yes
No
Yes
-
Yes
Yes
Yes
No
No
-
Yes
Yes
Yes
No
No
-
Yes
Yes
Yes
No
No
-
Yes
No
0.5
8
128K1256K
Yes
No
0.5
8
128K1256K
No
Yes
1.0
18
256K bytes
No
Yes
1.2
18
48/641256K bytes
No
Yes
0.44/0.55
18
128K bytes
DMA
DMA
DMA
DMA
DMA
-
DMA
DMA
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
TPOS
No
256
256
-
-
-
DMA, interrupt
DMA, interrupt
-
-
-
Back-up and diagnostic peripherals supported
None
None
Diskette (diagnostic
only)
Diskette (diagnostic
only)
Diskette (diagnostic
only)
Communications operating software:
Availability
Generated by
Included in price
-
Incl uded in price
-
See comments
Host
See comments
Host
See comments
Host
Additional software supported
-
-
Macro assembler
Macro assembler
Macro assemblers
Turnkey systems available
Yes
Yes
Yes
Yes
Yes
$32,600 to
$181,000
Telenet tariff
$34,600 to
$189,200
Telenet tariff
$146,400 to
$1,075,000
$3,638 to
$30,395
$46,800 to
$888,400
$l,170to
$24,250
$51,050 to
$89,100
$1,500 to
$2,600
-
-
145 (4000 Series)
GTE Telenet
145 (4000 Series)
GTE Telenet
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
Compatible with
GTE Telenet public
packet network
-
-
Compatible with
GTE Telenet public
packet network
-
-
$170 (GRTS-II)
$170 (GRTS-II)
11170
7174
Honeywell
Honeywell
Honeywell
GRTS, NPS software included in
system price;
GRTS-II software
separately priced
GRTS-II & NPS
software separately
priced
-
GRTS, NPS software included in
system price;
GRTS-II software
separately priced
-
\
\'--.
,
$170 to $780
10/77
-
I,'
~,
1'''-_/
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
C13-010-123
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Honeywell DPS.
DPS-8
NETWORK ARRANGEMENTS SUPPORTED
As a front -end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Honeywell
DATANET
6678
Honeywell
DATANET
6651
MANUFACTURER AND MODEL
Yes
1
2
32
No
-
-
No
Yes
Honeywell Series
60, Level 66/68
Yes
1
2
32
No
-
No
Intelligent
Terminals. Inc.
ADCAP 100-1
IBM-DPD
3705-11
IBM-DPD
3704
IBM S/360.
S/370, 303X,
IBM S/360,
S/370, 303X,
43XX
43XX
Yes
1
1
Device-depend.
Yes
1
1
Device-depend.
No
Yes
4
4
Device-depend.
Yes
1
1
Device-depend.
No
-
IBM 370X & compatible
No
-
Yes
Variable
Unlimited
4096
No
-
-
-
Yes
No
No
Yes
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
96
96
96
12K
None
96
96
96
12K
None
32
32
32
134.5K
Capacity halved
352
352
32
230.4K
Capacity halved
-
Estimated processor throughput, chars.lsec.
-
-
-
-
38.4K
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC (UDLC, BOLe)
IBM SDLC
X. 25-Packet level
Other
Yes
Yes
Yes
No
No
Yes
Yes
Yes
-
Yes
Yes
No
Yes
No
-
Yes
Yes
Yes
Yes
Yes
-
No
Yes
Yes
No
Yes
No
No
Yes
No
Yes
Yes
0.44/0.55
0.44/0.55
-
18
192K bytes
18
512K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA
DMA
-
-
Back-up and diagnostic peripherals supported
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
No
-
No
-
Yes
No
64K bytes
Yes
Yes
1.0
18
512K bytes
-
DMA
DMA
Interrupt
-
DMA
DMA
DMA
-
Diskette (diagnostic
only)
Diskette (diagnostic
only)
-
-
Communications operating software:
Availability
Generated by
See comments
Host
See comments
fiost
Separately priced
Host
Separately priced
Host
Included in price
-
Additional software supported
Macro assembler
Macro assembler
-
-
-
Turnkey systems available
Yes
Yes
Available
Available
Yes
$ 12,000 to
$221,000
$2,105 to $6,200
$191,460 to
$280,600
$4,810 to
$6,150
$170 (GRTS-II)
$22,100 to
$24,455
$679 to $856
$40,800 to
$122,040
$1,225 to
$4,565
$7,200 to
$25,000
$350
-
-
Option-depend.
$100
-
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint" range)
Communications operating software--Qne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENT'>
MARCH 1980
$170 to $780
-
-
5173
8176
11179
Honeywell
-
-
Honeywell
IBM
IBM
-
CRTS-II & NPS
softwa re separately
priced
GRTS, NPS software included in
system price;
GRTS-II software
separately priced
$10/77
10177
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Prices shown are
for basic controller
only
30
A protocol converter that converts
various protocols to
X.25 network protocols; limited
store-and-forward
capabilities; expandable bandwidth via multiple
processor architecture
C13-010-124
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
1ITT Courier
VTLC
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Lemcom
Systems. Inc.
CMC-32
.~
I
Memorex
1380
IBM S/360, S/370.
303)(' 4300. and
compatible
IBM S/360, S/370,
303X,43OO,and
compatible
IBM S/360, S/370.
303X. 43XX, and
compatibles
-
Yes
1
2
Un restricted
No
Yes
1
2
Unrestricted
No
-
-
No
No
-
-
-
-
-
Yes
4
8 (4 at a time)
Unrestricted
By RPO
Contact vendor
Contact vendor
Contact vendor
No
-
-
No
No
No
No
IBM S/360.
S/370, 3000,
4300, & plug compatibles
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Lemcom
Systems. Inc.
CMC-4
Yes
1
1
255
No
No
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity. if all lines are full-duplex
4
4
4
9600
-
4
4
3
56K
None
32
32
24
56K
None
112 to 216
64
40
230.4K
None
Estimated processor throughput, chars.lsee.
-
7K
56K
-
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X25-Packet level
Other
No
Yes
No
No
No
Yes
Yes
No
No
No
Yes
Yes
No
No
No
Yes
Yes
No
No
No
-
-
-
-
',,-_/
/'
'-. ' .
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Yes
No
Yes
No
0.5
8
40K
-
-
Yes
No
0.5
8
320K
No
Yes
0.54
16
64K
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
-
-
-
-
Back-up and diagnostic peripherals supported
Diskette
None
None
None
Communications operating software:
Availability
Generated by
Included in price
Comm. processor
-
-
Some separ. priced
Host
Message broadcast, line
monitoring, error logging, & config. monitoring
See comments
-
-
MASCOT and other
host-resident utilities
-
-
No
$7,900 to $26.150
$14,000 to $20,000
$20,000 to $60,000
$50,000 to $230,000
Additional software supported
Turnkey systems available
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Interrupt
Interrupt
DMA, interrupt
DMA
$370 to $1,150
Contact vendor
Contact vendor
$1,400 to $6.400
Communications operating software-{)ne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
7176
3177
-
600
lIT Courier
140
Userlthird party
20
User Ithird party
Contact vendor
Contact vendor
1976
150
Memorex
COMMENTS
A turnkey front-end
processor system that
can replace an IBM
370X in a network of
3270-type BSC terminal
devices; the VTLC appears to the host as a
3272 controller and
handles both remote and
local terminal devices
Microprocessor-directed
FEP. Compact and extremely flexible. Frontend polling, console support available. OEM discounts available. RPO's
available for a fee.
Microprocessor-directed
FEP. Compact and extremely flexible. Frontend polling console support available. OEM
discounts available.
RPO's available for a fee.
3179
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Custom software exlensions are available for a
fee, from Memorex Systems Engineering Services
./
"--
MARCH 1980
C13-010-125
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Modular
Computer
Systems
Modcomp
MCIV/35/CP-B
Modular
Computer
Systems
Modcomp
MCII/CP2
I
Modular
Computer
Systems
Modcomp
3108
Modular
Computer
Systems
Modcomp
3109
NCR
721-11
\
Modcomp MCII126
& MCII/45
Modcomp MCII/
35-B
Modcomp Classic
7830
Modcomp Classic
786X, 7870
NCR Century,
Criterion, & 8XX5
Systems
Yes
1
1
256
Yes
Applic.-dependent
Applic.-dependent
User-programmable
Yes
User-programmable
TOTAL, TXS, INFIN.
MAX III/IV, MAXNET
Yes
Yes
1
1
256
Yes
Applic.-dependent
Applic.-dependent
User-programmable
Yes
User-programmable
TOTAL, TXS, INFIN.
MAX III/IV, MAXNET
Yes
Yes
1
1
256
Yes, with CPU
Applic.-dependent
Applic.-dependent
User-programmable
Yes, with CPU
User-programmable
TOTAL, TXS, INFIN.
MAX III/IV, MAXNET
Yes
Yes
1
1
256
Yes, with CPU
Applic.-dependent
Applic.-dependent
User-programmable
Yes, with CPU
User-programmable
TOTAL, TXS, IN FIN.
MAX III/IV, MAXNET
Yes
Yes
2
2
Device-dependent
Yes
Unrestricted
Unrestricted
Device-dependent
Yes
NCR/CNA
TOX
No
Communications line capacity
No. of half -duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
256
256 to 166
Applic. -dependent
250K
None
256
256 to 166
Applic.-dependent
250K
None
256
256 to 166
Applic. -dependent
250K
None
256
256 to 166
Applic.-dependent
250K
None
253
52 to 253
10 at 56K bps
56K
Capacity halved
Estimated processor throughput, chars.lsec.
200K
200K
200K
200K
40K
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLe)
IBM SDLC
X 25---Packet level
Other
Yes
Yes
User-programmable
User-programmable
Yes
Yes
Yes
User -progra mmable
User-programmable
Yes
Yes
Yes
User-programmable
User-programmable
Yes
-
Yes
Yes
Yes
Yes
Yes
-
Yes
Yes
User -programmable
User -programmable
Yes
-
-
Umited
No
0.8-1.0
16
128K bytes
Umited
No
0.6
16
1M bytes
Yes
No
0.125
16/32
2M bytes
Yes
No
0.125
16/32
4M bytes
Yes
No
0.65
16
256K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMI
DMA
DMA
DMI
DMA
DMA
DMI, interrupt
DMA, interrupt
DMA, interrupt
DMI, interrupt
DMA, interrupt
DMA, interrupt
-
Back-up and diagnostic peripherals supported
Disk, mag. tape,
printers
Disk, mag. tape,
printers
Disk, mag. tape,
printers
Disk, mag. tape,
printers
Cassette
Communications operating software:
Availability
Generated by
Separately priced
Host
Separately priced
Host
Separately priced
Host
Separately priced
Host
Separately priced
Host
Additional software supported
Macro assembler,
FORTRAN, utilities
Macro assembler,
FORTRAN, utilities
Macro assembler,
FORTRAN, utilities
Macro assembler,
FORTRAN, utilities
-
Turnkey systems available
No
No
No
No
Yes
$21,650
$55,400
$28,800
$43,300
-
-
-
-
$41,720 to
$100,400
$1,205 & up
-
-
-
Modcomp
$15,000
$417 & up
1976
NCR
NETWORK ARRANGEMENTS SUPPORTED
As a front -end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
Modcomp
Modcomp
-
Modcomp
COMMENTS
MARCH 1980
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA'
REPRODUCTION PROHIBITED
DMA
DMA
I
:
I
C13-010-126
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
NCR Comten. Inc.
COMTEN
3650
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
NCR Comten. Inc.
COMTEN
3670
North American
Philips Corp .•
Comm. Sys. Div.
MARK III Series
NCR Comten. Inc.
COMTEN
3690
IBM .S/360, S/370,
3033, & 43XX; CDC
Omega; Amdahl; custom
IBM S/360, S/370,
3033, & 43XX; CDC
Omega; Amdahl; custom
IBM S/360, S/370,
3033, & 43XX: CDC
Omega; Amdahl; custom
IBM S/370, custom
Yes
2
2
4096 per system
Yes
15
Unlimited
32
Yes
SNA,CNA
Yes
4
4
12,288 per system
Yes
15
Unlimited
32
Yes
SNA, CNA
Yes
8
8
16,384 per system
Yes
15
Unlimited
32
Yes
SNA, CNA
Yes
Applic.-dependent
Appl ic. -dependent
Applic.-dependent
Yes
Applic.-dependent
Appl ic. -dependent
Appl ic.-dependent
Yes
Philips
Philips
Philips
Yes
C
I
-
EP, NCP, CNS, DSS
No
-EP, NCP, CNS, DSS
-
No
See comments
Yes
Communications line capacity
No. of half -duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
128
128
32 to 128
230.4K
None
384
384
96 to 384
230AK
None
512
512
128 to 512
230AK
None
Estimated processor throughput. chars.lsec.
lOOK (HASP)
lOOK (HASP)
300K (HASP.)
Applic.-dependent
Applic.-dependent
Applic.-dependent
19.2K; higher by RPO
Capac. halved for voice
& wideband
Applic.-dependent
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X. 25-Packet level
Other
Yes
Yes
Yes
Yes
Yes, DATAPAK
83B3
Yes
Yes
Yes
Yes
Yes, DATAPAK
83B3
Yes
Yes
Yes
Yes
Yes, DATAPAK
83B3
Yes
RPO
RPO
RPO
RPO
RPO
/
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
No
Yes
0.65
16 plus parity
512K bytes
No
Yes
0.65
16 plus parity
512K bytes
Yes
Yes
0.52
64 plus parity
4096K bytes
Yes
Yes
0.7
36
1M bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA, interrupt
DMA, interrupt
DMA, interrupt
Back-up and diagnostic peripherals supported
Diskette, cassette
Cassette
Diskette
Disk, line printers,
mag. tape
Communications operating software:
Availability
Generated by
Separately priced
Host/comm. proc.
Separately priced
Host/comm. proc.
Separately priced
Host/comm. proc.
Included
Host/comm. proc.
Additional software supported
NDP, CODEL Assembler
NDP, CODEL
Assembler
NDP, CODEL Assembler
Special utilities
Turnkey systems available
Yes
Yes
Yes
Yes
$45,000 to $125,000
$90,000 to $350,000
$130,000 to $550,000
Contact vendor
PRICING AND AVAILABILITY
Purchase price (system range)
$1,500 to $4,150
$3,000 to $11,600
$4,300 to $18,000
Contact vendor
Communications operating software--Qne-time charge
Communications operating software-monthly charge
Date of first delivery
Number tostalled to date
Serviced by
See comments
See comments
See comments
See comments
-
Over 800
NCR Comten
See comments
See comments
3/72
Over 300
NCR Comten
COMMENTS
All software except
System Control Software
is licensed on a monthly
basis
All software except
System Control Software
is licensed on a monthly
basis
Communications processor operating systems
include EP, NCP, CNS,
DSS, & CTAM; all software except System
Control Software is
licensed on a monthly
basis
Monthly rental (2-yr. lease, including maint., range)
3175
6178
Over 200
NCR Comten
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
1967
Over 90
N. Am. Philips/CSD
Virtually off-shelf for
AFTN public switching
and Telex applications;
custom config. available
(
........ _,/
MARCH 1980
C13-010-127
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
MANUFACTURER AND MODEL
North American
Philips Corp .•
Comm. Sys. Div.
DXS40
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
North American
Philips Corp .•
Comm. Sys. Div.
MARC
Peri phonics
Corporation
T-Comm 7
Paradyne
PIX-II
Periphonics
Corporation
DTC-II
Custom
Custom
IBM S/360,
S/370, 303X, and
compatibles
IBM, NCR, Burroughs, Honeywell,
etc.
No
Yes; see comments
Yes
Yes
1
1
B
B
4
256/800
4
Yes
Applic.-dependent
Applic.-dependent
Applic.-dependent
Yes
Philips
Philips
Philips
Yes
Yes
See comments
See comments
Applic.-dependent
Yes
Applic. -dependent
Applic. -dependent
Applic. -dependent
Yes
Philips
Philips
Philips
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1BOO i:lps
2000 to 9600 i:lps
Over 9600 i:lps
Highest line speed supported, i:lits per second
Effect on line capacity, if all lines are full-duplex
Applic. -dependent
Applic.-dependent
Applic.-dependent
19.2K; higher by RPO
None
Estimated processor throughput, chars.! sec.
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X. 25---Packet level
Other
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachai:lle to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served i:ly one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmai:lle by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
IBM, NCR, Burroughs, Honeywell,
etc.
Yes
Host-dependent
256/Boo
Yes
Host -dependent
B
B
No
256
Yes
Pericomm, SNA, etc.
No
Peri-Comm
Yes-on RPQ basis
256
Yes
Pericomm, SNA, etc.
No
Peri-Comm
Yes-on RPQ basis
Applic. -dependent
Applic.-dependent
Applic.-dependent
19.21<; higher by RPO
None
20
3 (full-duplex)
56K
Capacity halved
50
10 to 45
Up to 10
56K bytes
Capacity halved
25
10to 45
Up to 10
56K bytes
Capacity ha Ived
Applic.-dependent
Applic.-dependent
14K
Processordependent
Processordependent
Yes
RPQ
RPQ
RPQ
Yes
RPQ
Yes
RPQ
HDLC; RPQ others
RPQ
Yes
RPQ
Yes
RPQ
No
No
No
Paradyne version
of SDLC
Yes
Yes
Yes
Yes
Yes
Audio Response
(93 line max)
Yes
Yes
Yes
Yes
Yes
Audio Response
(25 line max.)
Yes
Yes
1.0
Yes
Yes
Yes
No
0.5
16
32K words
No
No
0.4 to O.B
16
176K bytes
No
No
0.4 to O.B
16
12BK bytes
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, Interrupt
Remote console,
diskette, mag. tape
Remote console.
diskette, mag. tape
Included in price
Hostlcomm. processor
Data Collection
(BANK-FROMHOME)
Included in pnce
Host/comm. processor
Data Collection
(BANK-FROMHOME)
1.0
B
B
64 (interrupt)
Yes
1
1
25
No
320K i:lytes
20BK bytes x NP;
see comments
Data transfer i:letween memory and:
Communications lines
Mass Storage
Other peripherals
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
Back-up and diagnostic peripherals supported
Disk, floppy disk,
mag. tape
Disk, floppy disk,
mag. tape
None
Communications operating software:
Availai:lllity
Generated i:ly
Included
Hostlcomm. proc.
Included
Hostlcomm. proc.
Included
Additiorgl software supported
Special utilities
Special utilities
Special utilities
Turnkey systems availai:lle
Yes
Yes
Yes
Yes
Yes
Contact vendor
Contact vendor
$50,000 & up
Contact vendor
$50,000 to
$75,000
$1,000 and up
$BO,ooo & up
Contact vendor
1979
30
N. Am. Philips/CSD
1979
Over 30
N. Am. Phllips.CSD
4176
1971
Over 250
Penphonlcs
Fall 1977
25
Penphonics
Also interfaces
with VDU's & word
processors; handles
X.25 Level 3
(Philips Level 4)
Custom configs.
include FAX, Teletex, peripheral controller; handles
X.25 Level 3
(Philips Level 4);
max. no. of host
supported/attachable & main memo
storage capacity
depends on no. of
processors (N P)
configured
PIX perm its remote
peripherals to
access host a s if
locally attached;
local PIX is bytechannel connected
to host; remote PIX
IS input to local PIX
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint .. range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Numi:ler installed to date
Serviced i:ly
COMMENTS
MAY 1980
Interrupt
In
price
1000
Paradyne
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-12B
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
Periphonics
Corporation
T-COMM 80
Multi-Processor
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Raytheon
Data Systems
Raynet I. II. & III
IBM, NCR, Burroughs, IBM, Univac
Honeywell, etc.
NElWORK ARRANGEMENTS SUPPORTED
As a front -end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end ,
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Yes
8 x NP
4x NP
No
Raytheon
Data Systems
Raynet IV & V
Rockwell
International
Collins C-System
Sperry Univac
DCP
IBM, Univac
IBM S/360, S/370,
303)(; Univac 1100
and 490 Series;
Amdahl; etc.
Univac Series 1100,
Series 90
No
Yes
Traffic-depend.
8
Protocol-depend.
Yes
Interface-depend.
Interface-depend.
ProtOCOl-depend.
Yes
Most
No
COS
Yes
Yes
2
2
Variable
Yes
Variable
Variable
Variable
Yes
DCA
No
Telecom
Custom
-
(256/800) x NP
-
Yes
Host-dependent
8x NP
256
Yes
Pericomm, SNA. etc.
No
Peri-Comm MP
Yes-on RPQ basis
Yes
22
1 (R-I); 8 (R-II & III)
No limit
Yes
Yes
No
PCOS
No
Yes
1 2 (R-IV); 22 (R-V)
8
No limit
Yes
Yes
Partial
PCOS
Std. (R-IV);
opt. (R-V)
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
50
(10 to 45) x NP
Up to 10
56K bytes
Capacity halved
87 per cpu
87 per cpu
87 per cpu
56K
Ca pacity ha lved
50 (R-IV); 87 (R-V)
50 (R-IV); 87 (R-V)
50 (R-IV); 87 (R-V)
56K
Capacity halved
1024
512
256
56K
None
256
128
32
56K
Capacity halved
Estimated processor throughput, chars.lsec.
Processor-dependent
Appl. dependent
Appl. dependent
50K
Variable
Yes
Yes
Yes
Yes
Yes
Audio Response
(NP x 25 lines) max.
Yes
Yes
Yes
Yes
No
PARS, Univac
Yes
Yes
Yes
Yes
No
PARS, Univac
Yes
Yes
Yes
Yes
Yes
Yes, including
most IBM
Yes
Yes
Yes
No
Contact vendor
Univac
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC (UDLC, BDLC)
IBM SDLC
X.25-Packet level
Other
-
-
"--
,
/
\,
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
No
No
0.4 to 0.8
16
320K bytes x NP
Yes
Yes
0.7
16
256K bytes per cpu
Yes
Yes
0.7
16
256K bytes per cpu
No
Yes
0.9
32
2M bytes
No
0.92
16
128K bytes
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA
DMA
DMA, interrupt
DMA
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA
DMA, interrupt
DMA, interrupt
DMA, interrupt
Remote console,
diskette, mag. tape
Cassette
Cassette, disk,
mag. tape
Disk, tape
Disk, diskette, console
Separately priced
Included in price
Host/comm. processor .Comm. processor
Separately priced
Comm. processor
Incl uded in price
Comm. processor
Included
Host
Additional software supported
All Periphonics plus
other PDP- 11
Utilities
Utilities
Macro assembler, link Diagnostic debug aids,
editor, etc.
performance
Turnkey systems available
Yes
Yes
Yes
Yes
Contact vendor
$50,000 & up
$60,000 to
$575,000
Contact vendor
$3,000,000 to
$7,000,000
Contact vendor
$100,000 & up
$4,000
-
-
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Back-up and diagnostic peripherals supported
Communications operating software:
Availability
Generated by
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
$55,000 to
$595,000
Contact vendor
Communications operating software-one-time charge
Communications operating software-monthly charge
Data of first delivery
Number installed to date
Serviced by
-
-
COMMENTS
Fall 1979
Periphonics
Multi-Processor
(MP) System. NP +
number of processors Peri-Comm
MP provides for
Multi-Processor,
distributed functionality for large
networks or standalone systems
$4,000
-
-
1980 (R-IV);1981 (R-V' 3174
Over 20
Raytheon Data
Raytheon Data
Rockwelllnt'l.
Systems
Systems
Raynet IV provides
Raynet I supports
network control
all Raynet III capafu nctions, redu ndancy bilities plus message switching;
option; Raynet.1I
provides a II Raynet I Raynet V provides
capabilities plus
all Raynet IV
host selection;
capabilities plus
Raynet III provides
node-to-node
all Raynet II capacommunications
bilities plus protocol
conversion
1978; 1980 (R-III)
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
No
$2,290 (5-yr.) & up
-
1977
-
Sperry Univac
Extensive networkoriented software
~
\
"-
MAY 1980
C13-010-127
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
..
(
North American
Philips Corp.,
Comm. Sys. Div.
DXS40
North American
Philips Corp.,
Comm. Sys. Div.
MARC
Custom
Custom
IBM S/360,
S/370, 303)(' and
compatibles
IBM, NCR, Burroughs, Honeywell,
etc.
IBM, NCR, Burroughs, Honeywell,
etc.
No
Yes
Applic.-dependent
Applic.-dependent
Applic.-dependent
Yes
Philips
Philips
Philips
Yes
Yes
See comments
See comments
Applic.-dependent
Yes
Applic.-dependent
Applic. -dependent
Applic. -dependent
Yes
Philips
Philips
Philips
Yes
Yes; see comments
1
1
64 (interrupt)
Yes
1
1
25
No
Yes
8
4
256/800
Yes
Host-dependent
8
256
Yes
Pericomm, SNA. etc.
No
Peri-Comm
Yes-on RPO basis
Yes
8
4
256/800
Yes
Host-dependent
8
256
Yes
Pericomm, SNA. etc.
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
Applic.-dependent
Applic.-dependent
Applic. -dependent
19.2K; higher by RPO
None
Applic.-dependent
Applic. -dependent
Applic. -dependent
19.2K; higher by RPO
None
20
3 (full-duplex)
56K
Capacity halved
50
10 to 45
Up to 10
56K bytes
Capacity halved
25
10 to 45
Up to 10
56K bytes
Capacity halved
Estimated processor throughput, chars./sec.
Applic.-dependent
Applic.-dependent
14K
Processordependent
Processordependent
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SOLC
X. 25-Packet level
Other
Yes
RPO
RPO
RPO
Yes
RPO
Yes
RPO
HDLC; RPO others
RPO
Yes
RPO
Yes
RPO
No
No
No
Paradyne version
of SOLC
Yes
Yes
Yes
Yes
Yes
Audio Response
(93 line max.)
Yes
Yes
Yes
Yes
Yes
Audio Response
(25 line max.)
Yes
Yes
1.0
8
320K bytes
Yes
Yes
1.0
8
208K bytes x NP;
see comments
Yes
No
0.5
16
32K words
No
No
0.4 to 0.8
16
176K bytes
No
No
0.4 to 0.8
16
128K bytes
OMA. interrupt
DMA. interrupt
DMA. interrupt
DMA, interrupt
OMA. interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
Disk, floppy disk,
mag. tape
Disk, floppy disk,
mag. tape
None
Remote console,
diskette, mag. tape
Remote console,
diskette, mag. tape
Communications operating software:
Availability
Generated by
Included
Host/comm. proc.
Included
Host/comm. proc.
Included in price
Addition'll software supported
Special utilities
Special utilities
Special utilities
Included in price
Host/comm. processor
Data Collection
(BANK-FROMHOME)
Included in price
Host/comm. processor
Data Collection
(BANK-FROMHOME)
Turnkey systems available
Yes
Yes
Yes
Yes
Yes
Contact vendor
Contact vendor
$50,000 & up
Contact vendor
$50,000 to
$75,000
$1,000 and up
$80,000 & up
Contact vendor
-
-
Communications operating software-ooe-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
-
-
-
-
1979
30
N. Am. Philips/CSD
1979
Over 30
N. Am. Philips.CSD
4176
1000
1971
Over 250
Periphonics
Fall 1977
25
Periphonics
COMMENTS
Also interfaces
with VDU's & word
processors; handles
X.25 level 3
(Philips level 4)
Custom configs.
include FAX, Teletex, peripheral controller; handles
X.25 level 3
(Philips level 4);
max. no. of host
supported/attachable & main memo
storage capacity
depends on no. of
processors (N P)
configured
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
Back-up and diagnostic peripherals supported
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
\
MARCH 1980
-
-
-
-
No
-
Interrupt
-
Paradyne
PIX permits remote
peripherals to
access host as if
locally attached;
local PIX is bytechannel connected
to host; remote PIX
is input to local PIX
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Periphonics
Corporation
T-Comm 7
Paradyne
PIX-II
Periphonics
Corporation
DTC-II
No
Peri-Comm
Yes-on RPO basis
.
C13-010-128
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
Periphonics
Corporation
T-COMM 80
Multi-Processor
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Rockwell
International
Collins C-Svstern
Raytheon
Ravnet
Sperry Univac
DCP
IBM, NCR, Burroughs,
Honeywell, etc.
IBM, Univac
IBM 5/360, 5/370,
303X; Univac 1100 and
490 Series; Amdahl; etc.
Univac Series 1100,
Series 90
Yes
Bx NP
4x NP
Yes
Up to 8
Up to 8
Yes
Traffic-depend.
8
Protocol-depend.
Yes
Interface-depend.
Interface-depend.
Protocol-depend.
Yes
Most
No
COS
Yes
Yes
2
2
Variable
Yes
Variable
Variable
Variable
Yes
DCA
No
Telecom
Custom
256
128
32
56K
Capacity halved
(256/800) x NP
-
Yes
Host-dependent
ax NP
256
Yes
Pericomm, SNA, etc.
No
Peri-Comm MP
Yes-on RPO basis
Yes
Up to 8
Up to 8
-
Yes
-
-
COS
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
50
(10 to 45) x NP
Up to 10
56K bytes
Capacity halved
-62
-
1024
512
256
56K
None
Estimated processor throughput, chars./sec.
Processor-dependent
100K per processor
50K
Variable
Yes
Yes
Yes
Yes
Yes
Audio Response
(NP x 25 lines) max.
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes, including
most IBM
Yes
Yes
Yes
No
Contact vendor
Univac
No
Yes
Not recommended
No
Yes
0.9
32
2M bytes
No
No
0.92
16
128K bytes
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X.25-Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
-
56K bytes
PARS, Univac
No
0.4 to o.a
16
320K bytes x NP
-
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA. interrupt
DMA. interrupt
DMA. interrupt
-
DMA, interrupt
DMA
DMA
DMA, interrupt
DMA. interrupt
DMA. interrupt
Back-up and diagnostic peripherals supported
Remote console,
diskette, mag. tape
Disk, tape
Disk, tape
Disk, diskette, console
Communications operating software:
Availability
Generated by
Included in price
Host/comm. processor
Included in price
Incl uded in price
Comm. processor
Included
Host
Additional software supported
All Periphonics plus
other PDP-11
-
Macro assembler, link
editor, etc.
Diagnostic debug aids,
performance
Turnkey systems available
Yes
Yes
Yes
Contact vendor
$50,000 & up
$60,000 to
$400,000
-
$3,000,000 to
$7,000,000
Contact vendor
$100,000 & up
-
-
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
Communications operating software-ene-time charge
Communications operating software-monthly charge
Date of first,delivery
Number installed to date
Serviced by
-
COMMENTS
-
256K bytes
-
-
-
-
-
03179
3174
Peri phonics
Raytheon Data Systems
Over 20
Rockvvell In!'1.
Multi-Processor (MP)
System. NP = number of
processors Peri-Comm
MP provides for MultiProcessor, distributed
functionality for large
networks or stand-alone
systems
The product description shown above
was derived by
Datapro from Raytheon marketing
literature, and
was not reviewed
by Raytheon personnel
Fall 1979
-
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
$2,290 (5-yr.) & up
1977
Sperry Univac
Extensive networkoriented software
MARCH 1980
C13·010·129
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Sperry Univac
DCP/40
(Primary Mode)
Sperry Univac
DCP/40
(Compatible Mode)
MANUFACTURER AND MODEL
Telcon
Industries. Inc.
Datamax
Series
Tandem
Computers. Inc.
T16
-
Univac Series 1100.
Series 90
Univac Series 1100.
Series 90
Yes
2
2
Variable
Yes
Variable
Variable
Variable
Yes
DCA
No
Telcon
Custom
Yes
Variable
Yes
Variable
Variable
Variable
Yes
DCA
No
Telcon
Custom
Communications line caj!lacity
No of half -duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
256
128
32
56K
Capacity halved
255
255
140
64K
None
2048
2048
2048
80K
Capacity halved
480
Up to 56
14
256K
None
Estimated processor throughput, chars.lsec.
Variable
Variable
-
-
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X.25--Packet level
Other
Yes
Yes
Yes
No
Contact vendor
Univac
Yes
Yes
Yes
No
Contact vendor
Univac
Yes
Yes
Yes
Yes
Yes
3270, Burroughs, TI/Net
Yes
No
Yes
Yes
No
6-Level typesetter code,
83B3, SAl, Infocom,
bisync.
Yes
No
0.85
32
12SK bytes
Yes
No
0.85
32
2M bytes
Yes
Yes
0.5 to 0.8
16
2M bytes
Yes
Yes
1.08
8
16K PROM, 32K RAM
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA, interrupt
DMA, interrupt
DMA, interrupt
DMA
DMA
DMA
DMA
DMA
DMA
Interrupt
Interrupt
Interrupt
Back-up and diagnostic peripherals supported
Disk, diskette, console
Disk, diskette, mag.
tape, console
Disk, mag. tape
-
Communications operating software:
Availability
Generated by
Separately priced
Host
Separately priced
Host
Separately priced
Separately priced
Comm. processor
Mditional software supported
Diagnostic debug aid,
performance
Diagnostic debug aids,
performa nce
FORTRAN, COBOL,
Pathway Mumps,
Enform, TAL
Alarm systems
Turnkey systems available
Contact vendor
Contact vendor
Optional
Yes
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
• Maximum no. of hosts channel-atiachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
8
8
Yes
1024
-
2561
Yes
1024
1024
256
Yes
Yes
Enscribe
Guardian
Yes
-
Universal; interfaces
with any system
Yes
8
480
Application-dependent
Yes
Unrestricted
Unrestricted
Unrestricted
Yes
Unrestricted
-
Telcon
Yes. with floppies or
bubble memory
$100,000 & up
$80,000 & up
$150,000 & up
$3,000 to $80,000
$2.460 (5-yr.) & up
$1,990 (5-yr.) & up
Contact vendor
$165 and up
Communications operating software-ene-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
-
May 1976
6176
-
4000
General Electric
COMMENTS
Monthly rental (2-yr. lease, including main!., range)
MARCH 1980
$115
1980
$90
1979
-
-
Sperry Univac
Sperry Univac
Tandem
Extensive networkoriented software;
advanced multi-micro
processor, LSI hardware
Extensive networkoriented software;
advanced multi-micro
processor, LSI hardware
A single Tandem system
may contain 2 to 16
processors; up to 255
can be configured in a
single network
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
$1,500 and up
Optional features include
built-in 300, 1200, &
2400 bps modems, realtime mode operation,
built-in video board for
attachment of keyboardl
display; capable of multiplexing 6 HDLC or SDLC
lines; 56K bps line speed
supported on all models
t-13-01 0-130
Processors.
Communications ProcessorsManagement Perspective and Equipment Specifications
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
TRAN
Telecommunications
Corp.
M300 Digital
Circuit Switch
Telefile
Computer Products
Inc.
FECP-X
Xerox Sigma 5-9 &
Telefile TaO Series
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations poll able on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
Yes
6 or more
6 or more
256
Yes
Software-dependent
Software-dependent
Software-dependent
Yes
TCOS
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1BOO bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
128
128
128
230.4K
Normally none
Estimated processor throughput, chars./sec.
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X. 25---Packet level
Other
IBM S/360. S/370, CDC
6600, H 6000, PDP-11,
Univac, Xerox
No
I-
Yes
2048
32
No
Transparent
No
DSOS
No
550 @ 1200 bps
TRAN
Telecommunications
Corp.
M3201A Single-Node
Data Switch
IBM S/360, S/370,
CDC 6600, H 6000,
Univac, Xerox
No
-
Yes
1000
Not applicable
Not supported
No
Transparent
No
DSOS
Opt. peripheral available
TRAN
Telecommunications
Corp.
M3201 Multi-Node
Data Switch
IBM S/360, S/370, CDC
6600, H 6000, Univac,
Xerox
No
-
Yes
750
Not applicable
Not supported
No
Transparent
No
DSOS
Opt. peripheral available
12K
None
200
150
30
230.4K
None
200
150
30
230.4K
None
6K bytes
70K
33K
33K
Yes
Yes
Yes
No
No
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
-
-
-
-
-
Yes
Yes (not recommended)
0.6 to 1.0
16
2M bytes
Yes
No
0.98
16
32K bytes
Yes
No
0.98
16
112K bytes
Yes
No
0.98
16
128K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA, interrupt
DMA
DMA. interrupt
-
-
-
Back-up and diagnostic peripherals supported
Yes
None
Diskette, mag. tape
Diskette, mag. tape
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
I
Communications operating software:
Availability
Generated by
Normally included
Host
Separately priced
Separately priced
Separately priced
-
-
-
Additional software supported
FORTRAN, sort/merge,
etc.
Dial-out billing
Dial-out billing
Dial-out billing
Turnkey systems available
Yes
No
Yes
Yes
$60,000 & up
$60,000 to $90,000
$125,000 to $250,000
$150,000 to $275,000
2V2% to 3% per mo.
$3,000 and up
-
$7,500
$450
1973
11
TRAN
$7,000 to $14,000 and
up
$20,000
$800
1976
15
TRAN
$7,000 to $14,000 and
up
$22,500
$1,000
1979
20
TRAN
Sync./async. circuit data
switching system with
sophisticated integrated
diagnostics and network
management capabilities
Hybrid sync./async. circuit and packet data
switch i ng system for
large-scale multiple
switching node networks; sophisticated
integrated diagnostics
and network management capabilities
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!.. range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
1978
5
Telefile
For line concentration
and digital circuit switching for async. terminals
accessing multiple hosts
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1980
/'
(
\.....
C13-010-131
Processors
Communications ProcessorsManagement Perspective and Equipment Specifications
TRT/Norfieid
AMMS
TRTI Norfield
Series 300
IBM 303X, Univac,
Honeywell, Burroughs
IBM 303X, Univac,
Honeywell, Burroughs
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of hosts supported simultaneously
Maximum no. of hosts channel-attachable to front-end
Maximum no. stations pollable per line or system
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capacity data base system
Operating system
As a store-and-forward message switching processor
No
Yes
4
4
32
Yes
256
256
1000
Yes
Norfield
Norfield
Norfield
Yes
Westinghouse
Canada Inc.
Electronic Sys.
W-1655-ICC
TRTI Norfield
Series 200
Most major manufacturers
No
-
No
-
-
-
Yes
64
64
1000
Yes
Norfield
Norfield
Norfield
Yes
Yes
64
Yes
16
4
Response-dependent
-
-
1000
Yes
Norfield
Norfield
Norfield
No
-
No
-
-
-
No
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Highest line speed supported, bits per second
Effect on line capacity, if all lines are full-duplex
128
64
32
230.4K
capacity ha Ived
128
64
32
56K
capacity halved
64
32
16
19.2K
None
Estimated processor throughput, chars./sec.
50K
-
-
Yes
Yes
Yes
Yes
Yes
83B, 8A 1, 11 7B, OCR,
2260, 2780, 3270
Yes
No
No
No
No
Telex, TWX, Free
Wheeling Async. Infomaster
Yes
Yes
Yes
Yes
Yes
Telex, Dataspeed 4012
& 40/3, 2780, Free
Wheeling Async.
Yes
Yes
Yes
Future
No
RESERVEC 11, IPARS,
U100/U200
Yes
No
0.4
16
256K bytes
Yes
No
0.4
16
128K bytes
Yes
No
0.4
16
64K bytes
Yes
No
0.5
8
32K bytes
Data transfer between memory and:
Communications lines
Mass Storage
Other peripherals
DMA, interrupt
Interrupt
DMA. interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
-
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
X.25---Packet level
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Programmable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
16
16
Future
9600
capac"ity halved over
4800 bps
2400
Interrupt
Interrupt
Back-up and diagnostic peripherals supported
Disk, mag. tape
Disk, mag. tape
Disk, mag. tape
-
Communications operating software:
Availability
Generated by
Included in price
Comm. processor
Included in price
Comm. processor
-
Included in price
Separately priced
Comm. processor
Additional software supported
Electronic mail
-
SMDR, CLM, CLR, OE,
PO
To customer requirement
Turnkey systems available
Yes
Yes
Yes
Yes
$95,000 to $500,000
$60,000 to $125,000
$40,000 to $75,000
$15,000 to $20,000
-
PRICING AND AVAILABILITY
Purchase price (system range)
Contact vendor
Contact vendor
Contact vendor
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
3175
40
-
-
TRTINorfield
TRTINorfield
COMMENTS
Multi-node processor
systems available. Norfield Communications
is a division of TRT Data
Products, a United
Brands company'
Multi-node processor
systems available. Norfield Communications is
a division of TRT Data
Products, a United
Brands company
Monthly rental (2-yr. lease, including main!., range)
3/75
40
-
6
TRTINorfield
200
User or third party
Norfield Communications
is a division of TRT Data
Products, a United
Brands company
Unit is modular, uses 3
micro-processors, and is
the basis of customdesigned special systems
(/
MARCH 1980
© 1980 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Contact vendor
6176
9176
C13-01 0-1 01
Processors
(
Communications Processors-Basic Characteristics
A catalogue of the most commonly used communications
processors along with their basic characteristics is presented on the following pages. Insomuch as an increasing
number of minicomputer systems are being utilized as distributed processing modules within larger networks, a
comprehensive section on commercially available minicomputers has been added to this tab. The minis included
have widely varying communications capabilities which
are available as either standard or optional features. The
minicomputer section offers the system planner a full
spectrum of processors which can be configured as remote
data processing nodes, connected by communications
links to a larger mainframe or network.
(
A comparison of 89 communications processors
from 36 vendors, whose names, addresses and
telephone numbers are also provided.
A discussion of the comparative characteristics of
communications processors and an explanation of
the accompanying charts is included.
For an in-depth analysis on the evolution and use of
communications processors, a detailed look at
front-end processors, and a presentation of users'
ratings and usage patterns, see Report C09-013101 behind the Management/System Guides tab
in this volume.
A prospective buyer can easily scan the charts to determine
the scope of the options available for a given set of requirements. The proper use of the charts will produce a list
of vendors and equipment that merit detailed study. It is
only from a detailed study of the equipment that an advantageous price/performance selection can be made for a
given systems requirement. It would be a misuse of the
charts to eliminate a processor from consideration on the
basis of comparing characteristics finely without checking
to see if the architecture possesses a feature that overcomes a seemingly small disadvantage.
Processors designed to perform only message switching of
voice grade lines were deemed not to meet the criteria for
inclusion. Equipment that vendors stated was no longer
being actively marketed was also excluded.
To have been included in the charts, a processor must have
had appropriate hardware and software to function either
as a front-end processor, as a remote concentrator, or as a
freestanding communications processor.
The information presented on each communications processor in the accompanying charts serves not only to
describe the basic characteristics of the equipment, but
also assists in defining physical and throughput limita-
All of the actively marketed equipment known to Datapro that satisfies the qualifying criteria is represented.
Any omission is because the product is no longer marketed
or is unknown to us.
The IBM 3705 and its little brother, the
3704, are the standard of the industry.
Together they accounted for two-thirds
of the processor responses in our survey. However, if IBM was slow to
move into the area of complex communications systems a few years ago,
its customers have been slow to take
advantage of the benefits of true frontend processing. Our survey indicated
that few of the users were either the
3704 or the 3705 as independent processing units; the great majority were
satisfied with emulating the 270X
hardwired controllers.
MARCH 1979
© 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-(}10-102
Processors
Communications Processors-Basic Characteristics
t>
tions. With one exception, all non-economic characteristics reduce themselves to one consideration: the throughput capabilities of the equipment relative to the specific
systems requirements. The exception is where the physical
attachment limitations are exceeded before the processing
capabilities are fully used.
For example, the number of high speed commun~ons
lines that are physically attachable to a processor usually
exceeds the throughput capabilities. For that reason, most
vendors submitted a smaller value for the number of lines
attachable at the higher speeds than the equipment could
physically accommodate. The numbers more accurately
describe the outer limits of the processor's throughput
limitations than the physical limitations. All of the vendors
were concerned that readers realize that the line mix and
the r,S'source mix could radically alter the number of lines
that could be supported, physical port availability notwithstanding. Datapro was most impressed with the
responsible attitude universally exhibited; and we are very
optimistic that better ways of expressing throughput capabilities will develop between the combined efforts of the
suppliers of communications processors and Datapro.
COMMENTS ON THE ENTRIES IN THE
ACCOMPANYING CHARTS
Some of the items indicated in the accompanying charts
are self-evident; others offer information of a subtle
nature. The following discussion highlights some of the
subtleties.
Network Arrangements Supported
Most of the equipment displayed herein, when operating
.' 'as a front-end, is restricted to supporting the host computer systems of specific mainframe manufacturers. However, some vendors include in their product lines front ends
that can be customized; such equipment is well represented
in the charts. Not included is the myriad of older mainframes that have been fully written-offfrom an accounting
standpoint and, therefore, can be offered at low enough
prices to justify tailoring and dedicating the overqualified
equipment to function as a front-end
Front a network arrangement standpoint, the number of
direct connections a front-end can support to one host and
the number of hosts a front-end can support become an
important consideration, especially for fallback considerations. Usually, a small number represents a special direct
connection. A high number indicates that the connection is
via a regular communications line port and does not mean
that the vendor is suggesting that so many connections to
one or more host is a designed capability.
a special interface or a regular communications line interface is used.
As the data communications industry continues to make
strides towards standardization, the network architecture
that a free-standing communications processor supports
will take on more and more importance. (The architecture
of a front-end must conform to the host's architecture.)
Underscoring this belief is the fact that two major mainframe manufacturers chose to list only their newest communications processor in the accompanying charts. In
both cases, it is the only such item in their product lines
that conforms to their new network architectures.
Since the prime purpose in burdening communications
lines around the world with data is to either retrieve
information or to add to the store of information, the
nature of the data base system supported should not be
overlooked. Actually it represents the "end" for which one
selects a "(communications processor) means". The name
of any data base system supported is listed for each communications processor. Of course, a buyer may be already
committed to a file maintenance or data base system and
not be interested in this type of support.
As would be expected, the tasks performed by each of the
operating systems supplied with the hardware will vary.
The name of the operating system is noted so that the
reader will know what to look for in detailed reports on
such software offerings.
Properly depicting communications line capacity is the
most difficult and the most controversial entry in the
accompanying charts. It would be very easy to utilize a full
page to describe the line capacity capabilities of just one
processor. As a reasonable alternative, Datapro decided to
show the number of half-duplex lines that can be physically attached to the processor presuming all lines were
operating within a given speed range. Three ranges were
chosen to represent low, medium, and high line speeds.
The ranges chosen were: up to 1800 bps, 2000 to 96000 bps,
and over 9600 bps. The number of low speed lines usually
represents the physical and throughput limitation for asynchronous lines. Generally, the medium and high speed
lines represent the outer limits of the throughput capabilities. The effect is using full-duplex lines is also
indicated.
The terminal protocols supported by the processors are
listed. Even though the protocols supported are mostly
dependent upon the marketing philosophy of the vendors,
the large number of vendors supporting the standardized
bit-oriented protocols is an indication of things to come.
Processor Characteristics
When the number of pollable stations on one line is "I,"
the system, as standard, supports only point-to-point
terminal arrangements. When the communications processor functions as a remote concentrator, the number of
host / concentrator connections is also a consideration
from a network standpoint. Again, the number of connections permitted is primarily an indication of whether
The communications processor's internal characteristics
give a general "feeling" for the equipment's throughput
capabilities. Hard wired equipment and some programmable processors will receive a "No" to the question: "Is
the processor microprogrammable by the manufacturer?"
A ''yes'' means that the processor has firmware, or micro-
© 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1979
C13-01 0-1 03
Processors
Communications Processors-Basic Characteristics
The 3690 shown at left is the latest system from the Comten, a company
recently acquired by NCR. Based on
new microprogrammable processor
architecture, the 3690 is about five
times as fast internally as the company's previous models and can service up to four times as many lines. To
support the 3690 in the large scale environment it is intended for, Comten has
developed the Data Switching System
(DSS) software system, whic~ will interface with IBM's SN A architecture.
In addition to the now traditional
functions of front-ending and remote
concentration, DSS also supports data
switching, which permits the distribution of processing tasks among nodes
in a sophisticated network.
coded stored logic. If the processor is microprogrammable
by the user, one can expect the capability for increasing
throughput by properly microcoding frequently-use~,
time-critical functions. If not properly done, the capability could adversely effect the inst~lation. M~n memory
cycle time, main memory word sIZe and mam memory
storage capacity offer a very general "feel" for throughput
speed possibilities. Ho~ver, sophisticated interna~ architecture may enable the processor to be many tImes
faster than another processor to be many times faster than
another processor with the same cycle time and word size.
That is another reason why we emphasize that a detailed
analysis is necessary, once the initial selection is made from
the charts.
The manner of data transfer between memory and communications lines, memory and mass storage, and memory
and other supported peripherals becomes critical as
volume requirements rise and/ or response ti~es. are
reduced. For high speed, high volume transnnssIOns,
Direct Memory Access transfers instead of character interrupt transfers become mandatory for reasonable throughput rates.
The "Turnkey systems" entry informs potential users
whether or not the vendor is willing to provide a complete system, incluing all applications software.
MARCH 1979
Pricing and Availability
The prices depicted in the cha~s represent a rang~ of
typical configurations. The magmtu~e of the ~~~ars gives
a ball-park indication of the expansIOn capabill~les of. the
equipment and should not be used to determme pn~/
performance. Only a ~etailed price for ~ configuratl~>n
satisfying specific requrrements would give such an mdication.
The absence of an entry for the monthly rental price
indicates that the vendor offers his equipment on a
chase only basis.
The charge for the processor's comm~nications operating
software is given, when separately pnced.
The date of first delivery is the date of the frrst production delivery.
With 89 communications processors to choose from r there
should be an offering for every need, whether the network
is a fully distributed network or a classic master/slave
network.
Suppliers C)f Communications Processors
Listed below for your convience in obtaining additional
information are the full names and addresses of the 36
© 1979 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-104
Processors
Communications Processors-Basic Characteristics
~
suppliers whose 89 products are summarized in the
following charts.
Action Communications Systems, Inc., 4401 Beltwood
Parkway South, Dallas, Texas 75234. Telephone (214)
386-3500.
ASI Teleprocessing Inc. (formerly American Systems,
Inc.), 101 Morse Street, Watertown, Massachusetts 02172.
Telephone (617) 923-1850.
Austron, Inc., 1915 Kramer Lane, Austin, Texas 78758.
Telephone (512) 386-3523.
Braegen Corporation, 20740 Valley Green Drive, Cupertino, California 95014. Telephone (408) 255-4200.
Burroughs Corporation, Burroughs Place, Detroit,
Michigan 48232. Telephone (313) 972-7000.
Chi Corporation, 11000 Cedar Avenue, Cleveland, Ohio
44106. Telephone (216) 229-6400.
Computer Automation, Inc., 2181 Dupont Drive, Irvine,
California 92713. Telephone (714) 833-8830.
IBM Corporation, General Systems Division, 5775 Glenridge Drive N.E., Atlanta, Georgia 3030 1. Telephone (404)
238-3000.
Memorex Corporation, Communications Group, 18922
Forge Drive, Cupertino, California 95014. Telephone
(408) 996-9000.
Modular Computer Systems, 1650 W. McNab Road, Fort
Lauderdale, Florida 33310. Telephone (305) 974-1380.
NCR Corporation, Main & K Streets, Dayton, Ohio
45479. Telephone (513) 449-2000.
NCR Corp., Data Pathing, Inc., 370 San Aleso Avenue,
Sunnyvale, California 94086. Telephone (408) 734-0100.
Norfield Electronics, Inc. 3 Depot Place, East Norwalk,
Connecticut 06855. Telephone (203) 853-2777.
North American Philips Corp., 91 McKee Drive, Mahwah, New Jersey 07430. Telephone (201) 529-3800.
Computer Communications, Inc., 2610 Columbia Street,
Torrance, California 90503. Telephone (213) 320-9101.
Omnus Computer Corp., c/o Centennial Systems, 4350
East-West Highway, Suite 1103, Bethesda, Maryland
20014. Telephone (301) 656-4070.
Com ten, 1950 W. County Road, B-2, St. Paul, Minnesota
55113. Telephone (612) 633-8130.
Paradyne Corporation, 8550 Ulmerton Road, Largo,
Florida 33540. Telephone (813) 536-4771.
Control Data Corporation, 8100 34th Avenue South,
Minneapolis, Minnesota 55440. Telephone (612) 8538100.
Periphonics Corporation, 75 Orville Drive, Bohemia, New
York 11716. Telephone (516) 567-1000.
Data General Corporation, Route 9, Westboro, Massachusetts 01581. Telephone (617) 366-8911.
Perkin-Elmer Corporation, Computer Systems Div.,
(formerly Interdata), 2 Crescent Place, Oceanport, New
Jersey 07757. Telephone (201) 229~6800.
Digital Communications Associates, Inc., 135 Technology
Park/ Atlanta, Norcross, Georgia 30092. Telephone (404)
448-1400.
Rockwell-Collins, 1200 North Alma Road, Richardson,
Texas 75081. Telephone (214) 996-5000.
Digital Communications Corp., 19 Firstfield Road,
Gaithersburg, Maryland 20760. Telephone (301)
948-0850.
Sperry Univac, PO Box 500, Blue Bell, Pennsylvania,
19422. Telephone (215) 542-4011.
Digital Equipment Corporation, 146 Main Street, Maynard, Massachusetts 01754. Telephone (617) 897-5111.
Tandem Computers, Inc., 20605 Valley Green Drive,
Cupertino, California 95014. Telephone (408) 255-4800.
Digital Systems Corp., 3 Main Street, Walkersville, Maryland 21793. Telephone (301) 845-4141.
Telefile Computer Products Inc., 17131 Daimler Street,
Irvine, California 92705. Telephone (714) 557-6660.
Hewlett-Packard Company, 11000 Wolfe Road, Cupertino, California, 95014. Telephone (301) 257-7000.
Telenet Communications Corp., 1050 17th Street N.W.,
Washington, DC 20036. Telephone (202) 637-7900.
Honeywell Information Systems, 200 Smith Street, Waltham, Massachusetts 02154. Telephone (617) 890-8400.
Texas Instruments, Inc., PO Box 1444, Houston, Texas
77001. Telephone (713) 494-5115.
IBM Corporation, Data Processing Division, 1133 Westchester Avenue, White Plains, New York 10604. Telephone (914) 696-1900.
Westinghouse Canada Ltd., Electronic Systems Division,
PO Box 5009, Burlington, Ontario, Canada. Telephone
(416) 528-8811.0
© 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1979
C13-010-105
Processors
Communications Processors-Basic Characteristics
ASI
Teleprocessing
Network Node
Nucleus 4010
ASI Teleprocessing Retail
Teleprocessing
Nucleus 4100
Austron
8500
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Most major
vendors
IBM, NCR,
DEC, Data
General, Burroughs
IBM, NDR,
DEC, Data
General, Burroughs
IBM, NCR,
DEC, Data
General, Burr.,
or stand-alone
IBM System
360/370
NE1WORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Yes
1
1
32
Yes
256
256
256
Yes
256
256
256
Yes
256
256
256
Yes
255
1
127
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations poll able on one line
Yes
1
1
32
Yes
256
256
256
Yes
256
256
256
Yes
256
256
256
--
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
No
No
Included
Yes
ASI-NCP
Yes
ASI-NCP
-
-
-
Yes
ASI-NCP
-
-
ASI-DOS
ASI-DOS
ASI-DOS
-
-
128
24 tv 64
4 to 24
128
24 to 64
4 to 24
128
24 to 64
4 to 24
25
16
8
None
20% reduction
20% reduction
20% reduction
-
Yes
Yes
No
No
TWX/Telex
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No.
No
Various polling
disciplines
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on.line capacity, if all lines are full-duplex
(
ASI
Teleprocessing
Front-End
Nucleus 4000
Action Communications
Systems THECONTROLLER
MANUFACTURER AND MODEL
Terminal protocols supported:'
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC(UDLC,BDLC)
IBM SDLC
Other
64
64
-
No
No
-
-
NCR, Sweda,
TI, MDS, TWX,
others
NCR, Sweda,
TI, MDS, TWX,
others
NCR, Sweda,
TI, MDS, TWX
others
Yes
No
1.2/0.8
16
65K words
(DEC PDP 11)
Yes
No
1
16
256K bytes
(DEC PDP 11)
Yes
No
1
16
256K bytes
(DEC PDP 11)
Yes
No
1
16
256K bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
Interrupt
DMA
DMA
DMA. interrupt
DMA
DMA. interrupt
DMA, interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA. interrupt
Communications operating software
Additional software supported
Included
None
Bundled (Iicen.)
Support for
various termi·
nals & hosts
Bundled (licen.)
Support for
various terminals & hosts
Bundled (licen.)
Support for
various termi·
minals & hosts
Included in price
Diagnostic and
test routines
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
$90,000 to
$250,000
$70,000 to
$150,000
$2,000
$50,000 to
$130,000
$1,500
$75,000 to
$150,000
$2,000
Bundled
Bundled
February 1975
NA
ASI/DEC
subcontract
Can serve as
front -end to
ASI Braille Translation or Text
Editing System
Bundled
Bundled
February 1976
NA
ASI/DEC
subcontract
Includes packet
switching soft
ware
Bundled
Bundled
February 1976
NA
ASI/DEC
subcontract
Data Collection
Polling System
& Credit
Authorization
$30,000 to
$80,000
$1,100 to
$3,000
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
Communications operating software-<>ne-time charge Communications operating software-monthly charge Date of first delivery
1971
Number installed to date
78
Serviced by
Sorbus
COMMENTS
TELECONtrROLLER is
a store and
orward message switching
system with
ront-end capa~ility
MARCH 1979
:Q 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
Yes
Optional
0.75
16
64K bytes
DMA. interrupt
.-
DMA interrupt
1975
NA
Austron &
third party
Main market IS
emulating IBM
local device in
terface to host
for remote
devices
C13-010-106
Processors
Communications Processors-Basic Characteristics
Braegen Corp
B40 Terminal
Controller
Burroughs
B 866
IBM 360/370,
303X and compatible
All Burroughs,
IBM System
Yes
No
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations po"able on one line
Burroughs
B 874
Burroughs
360/370
Chi
Communications
732
Burroughs
B 876
All Burroughs,
IBM System
UNIVAC 1100
Series
3601370
No
Yes
7
2
2
8
8
32
100
7
100
Yes
32
32
100
Yes
32
32
100
Terminal
dependent
Yes
Unlimited
Unlimited
Terminal depen.
Yes
Burroughs BNA
No
MCP
Yes
Burroughs BNA
No
MCS
Yes
Burroughs BNA
No
MCP
No
16
16
16
7
7
2
32
32
4
32
32
4
100
64
32
None
None
None
None
None
No
Yes
No
Yes
Braegen FDLC
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Future
Future
REMl/UNIVAC
Yes
No
0.6
Yes
No
Yes
No
Yes
No
1
1
1
B
256K bytes
16
114K bytes
16
96K bytes
16
147K bytes
Yes
No
0.75
32
1 M byte
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
DMA. interrupt
DMA, interrupt
DMA. interrupt
DMA
DMA
Interrupt
DMA
DMA
Interrupt
DMA
DMA
Interrupt
DMA. interrupt
Interrupt
Interrupt
Communications operating software
Additional software supported
Sep priced
Braegen TSO.
Incl. in price
COBOL, RPG,
3270/3780emul MPL, PSL.
GEMCOS
Inc!. In price
Inc!. in price
COBOL, RPG,
MPL, PSL.
GEM COS
Incl
Yes
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
S10,000 to
SlOO,OOO
S350 to S3,000
S33,000
S30,000 and up
S75,000
Monthly rental (2-yr. lease, including maint., range)
S50,000 to
S300,000
Sl,OOO up
Sl ,000 and up .
S2.300 up
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
_
S45 to S90
1974
70-80
Braegen Corp.
S25
August 1977
NA
Burroughs
S2,250
S200
1977
NA
Burroughs
S25
August 1977
NA
Burroughs
Network Definition Language is separately priced
Network Definition Language IS separately priced
Network Definition Language is separately priced
7
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations po"able on one line
Yes
16
16
32
As a free-standing communications processor
Network Architecture compliance
Fu"-capability data base system
Operating system
Yes
Communications line capacity
No. of half-duplex lines physically attachable to
processor if a" are operated at the listed speeds.
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if a" lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
COMMENTS
~
Braegen TSO
Braegen OS
Yes
7
Yes
1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
In
price
August 1972
NA
Chi Communications
MARCH 1979
C13-010-107
Processors
Communications Processors-Basic Characteristics
Computer
Automation
Inc.
LSI-2, 3, 4
Computer
Automation
Inc.
SyFA
MANUFACTURER AND MODEL
Computer
Communications Inc.
CC-8
Computer
Communications Inc.
CC-80
Computer
Communications Inc.
CC-85
IBM 360/370.
ICL. or X.25compatible
Application
dependent
IBM 360/370
and compatible
IBM 3601370
and compatible
IBM 360/370
and compatible
No
-
Yes
32
32
128
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Yes
32
Applic. Depend.
Applic. Depend.
Yes
32
32
128
Yes
4
4
Device dependent
No
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
SNA, X.25
SyCLOPS
SyCLOPS
No
-
Yes
7
7
Device dependent
Yes
8
105
Device dependent
No'
Yes
7
7
Device dependent
Yes
8
105
Device dependent
No
-
-
-
-
Communications line capacity
No. of haH-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
34
34
Varies
240
240
Varies
864
864
Varies
1,112
1,112
Varies
Effect on line capacity, if all lines are full-duplex
None
32
32
Application
dependent
None
None
None
None
Yes
Yes
No
Yes
X.25
Yes
Yes
Yes
Yes
User writeable
Yes
Yes
No
No
Custom, X.25
Yes
Yes
Yes
Yes
Custom, X.25,
SABRE
Yes
Yes
Yes
Yes
Custom, X.25
SABRE
Yes
No
0.35
8
304K bytes
Yes
Yes
8
16K bytes
Yes
No
0.54
16
64K bytes
Yes
No
0.54
16
512K bytes
Yes
No
0.27
16
512K bytes
DMA interrupt
DMA interrupt
DMA, interrupt
DMA interrupt
DMA interrupt
DMA interrupt
DMA interrupt
DMA interrupt
DMA interrupt
DMA, interrupt
DMA, interrupt
DMA interrupt
DMA. interrupt
DMA, interrupt
DMA interrupt
Incl. in price
-
Incl. in price
Distributed
Networking
Incl. in price
Distributed
Networking
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC(UDLC,BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
CommuniCations lines
Mass storage
Other peripherals
-
-
No
-
Communications operating softwar9
Additional software supported
Sep. priced
Sep. priced
SyBOL, SyMPLE, Panel Manager
Turnkey Systems
No
Yes
Yes
Yes
Yes
$29,000 up
$30,000 and up
-
-
$40,000 to
$200,000
$800 up
(3 yr.)
$85,000 to
$500,000
$1.400 up
(3 yr.)
-
$120,000 to
$600,000
$2,000 up
(3 yr.)
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
Communications operating software-i>ne-time chargE
CommuniCations operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
MARCH 1979
$2,000
Contact vendor
-
-
May 1976
350
Computer
Automation
Multifunction
interactive
distributed
network
system
Fall 1977
Various service
companies
-
-
June 1975
50
CCI
May 1975
120
CCI
January 1979
3
CCI
CC-8 Features
enhanced
CC-80 is
independent
front end and
network
controllerl
concentrator
CC-85 doubles
throughput of
CC-80 for
front-ending
and networking
-
270X/370X
emulation
:g 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-108
Processors
,/
Communications Processors-Basic Characteristics
Computer
Communications Inc.
CC-8000
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM 360/370
and compatible
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Yes
7
7
Device dependent
No
COMTEN.
Inc.
COMTEN
3650 II
COMTEN.
Inc.
COMTEN
3670 II
IBM 360/370, ... , IBM 3601370,
custom
Amdahl, CDC
Omega,ltel.
custom
IBM 360/370,
Amdahl, CDC.
Omega,ltel.
custom
COMTEN.
Inc.
CUMTEN 20
Custom
No
-
-
COMTEN.
Inc.
COMTEN 476
Yes
4
Yes
2
2
4096
Yes
4
4
4096
-
4
4096
-
No
-
Yes
2
Unlimited
4096
-
Yes
2
Unlimited
4096
Yes
4
Unlimited
4096
Yes
NCS
Included
NCS-MS
Yes
INFONET
Via INFONET
Proprietary
Yes
CNA
Yes
SNA,CNA
-
-
Yes
SNA,CNA
CTAM
DSS, COS
DSS, COS
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
240
240
Varies
128
128
64
240
240
80
128
128
80
384
322
80
Effect on line capacity, if all lines are full-duplex
None
No effect
No effect
No effect
No effect
Yes
Yes
Yes
No
Custom, SABRE
Yes
Yes
Yes
No
Yes
Yes
No
Yes
-
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
0.54
16
512K bytes
No
No
0.75
16
128K bytes
No
No
0.75
32
512K bytes
No
No
0.65
16
512K bytes
No
No
0.65
16
512K bytes
DMA interrupt
DMA, interrupt
DMA, interrupt
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
Communications operating software
Additional software supported
Incl. in price
Message
Switching
NA
Full range via
INFONET
Included
CODEL
Included
Data Switching
System (DSS)
Included
Data Switching
System IDSS)
Turnkey Systems
Yes
No
Yes
Yes
Yes
$250,000 up
$60,000 up
$120,000
$150,000 to
$500,000
$40,000 to
$120,000
$80,000 to
$320,000
$6,000 up
(3 yr.)
NA
NA
$1,000 to
$3,000
$2,000 to
$8,000
-
-
See Comments
March 1975
Over 600
COMTEN.
See Comments
March 1972
Over 300
COMTEN
Software
bundled
except for
DSS package
Software
bundled
except for
DSS package
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC IUDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
-
-
-
Data transfer·between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental 12-yr. lease, including maint., range)
Communications operating software-one-time cha~'!I
Communications operating software-monthly charge
Date of first delivery
July 1976
Number installed to date
15
Serviced by
CCI
!cOMMENTS
Message
Switching
software is
custom and is
separately priced
-
-
March 1971
Over 60
Computer Sciences Corp.
_
..
Sept. 1975
Over 60
COMTEN
In February 1979, COMTEN was acquired by NCR Corporation
© 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1979
C13-010-109
Processors
,
Communications Processors-Basic Characteristics
Control
Data Corp.
CYBER 1000
IPMX)
COMTEN.
Inc.
COMTEN
3690
MANUFACTURER AND MODEL
Control
Data Corp.
CYBER 1000
IONS)
Control
Data Corp.
2551-1
Control
Data Corp.
2551-2
IBM 360, 370,
AmEiahl. CDC
Omega,ltel.
custom
IBM 360/370,
Univac 1108,
Sigma 5
CDC CYBER,
IBM 370,
Univac 1100
Series
CDC 6000;
CYBER 70, 170;
3000L Series
CDC 6000;
CYBER 70,170
Series
Yes
8
8
4096
Yes
1
2
Protocol dependent
No
Yes
PMX
No
PMX
Yes
1
4
Protocol dependent
Yes
2
Unlimited
Protocol dependent
Yes
DNS
No
DNS
Yes
2
2
Protocol dependent
Yes
1
Up to 8
Protocol dependent
No
Yes
2
2
Protocol dependent
Yes
1
Up to 8
Protocol dependent
No
512
512
277
128
128
32
128
128
32
No effect
None
None
32
32
4 @ 19.2K;
2@56K
None
254
254
4 @ 19.2K;
2@ 56K
None
Yes
Yes
Yes
Yes
Yes
Yes
No
No
HASP MIL;
Mode 4A. 4C;
CDCCP
Yes
Yes
Yes
No
CDCCP,ISO
1745, ATT, COT
Yes
Yes
Yes
No
HASP MIL;
Mode 4A. 4C;
X.25
Yes
Yes
Yes
No
HASP MIL;
Mode 4A. 4C;
X.25
4096K bytes
No
No
1.2
27
768K bytes
No
No
1.2
27
768K bytes
Yes
Yes
0.55
18
262K bytes
Yes
Yes
0.55
18
262K bytes
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
-
-
DMA, interrupt
DMA. interrupt
Communications operating software
Additional software supported
Included
Data Switching
System (DSS)
Sep. priced
FORTRAN IV,
assembler,
utilities
Sep. priced
FORTRAN IV,
assembler,
utilities
Sep. priced
PASCAL, crosscompilers, network products
Sep. priced
PASCAL, crosscompilers, network products
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
$120,000 to
$500,000
$3,000 to
$12,000
$450,000 to
$ 900 ,000
$13,500 to
$24,500 (3 yr.)
$34,100
$730+2.450 OTC
June 1973
42
Control Data
Corporation
Protected Message Exchange
(PMX) system
includes multiprocessor interconnects, recovery, and load
sharing
$250,000 to
$550,000
$6,300 to
$16,000 (3 yr.)
$27,520
$590+1,960 OTC
October 1975
20
Control Data
Corporation
Distributed Network System
(DNS) provides
full network
arcchitecture
$49,000 to
$74,000
$1,650 to
$2;300 (3 yr.)
$3,940
$120+570 OTC
June 1975
55
Control Data
Corporation
Conforms with
DNS network
architecture
$59,000 to
$190,000
$2,000 to
$8,500 (3 yr.)
$3,940
$120+570 OTC
June 1975
195
Control Data
Corporation
Features two
processors;
conforms with
DNS network
architecture
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Yes
8
Unlimited
4096
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
SNA,CNA
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC IUDLC, BDLC)
IBM SDLC
Other
DSS, COS,
CTAM
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity. words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
Yes
No
0.52
64
Communications operating software-one-time cha~~ Communications operating software-monthly charge See Comments
Date of first delivery
June 1978
Number installed to date
Over 40
Serviced by
COMTEN
COMMENTS
Software
bundled
except for
DSS package.
See note on
previous page
MARCH 1979
-
-
DMA. interrupt
:Q 1979 DATAPRO RESEARCH CORPORATION. DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
-
DMA. interrupt
C13-010-110
Processors
Communications Processors-Basic Characteristics
Data General
ECLIPSE
S-130
Data General
NOVA 4
Data General
microNOVA
IBM 360/370,
Data GI:meral.
custom
IBM 360/370,
Data General,
custom
IBM 360/370,
Data General,
custom
Data General
Nova, Eclipse
Data General
Nova, Eclipse
Yes
Multiple
Multiple
Device dependent
Yes
Multiple
Multiple
Device dependent
Yes
Bisync/SDLC
INFOS
AOS,RDOS
Yes
Multiple
Multiple
Device dependent
Yes
Multiple
Multiple
Device dependent
Yes
Bisync/SDLC
No
-
Yes
Yes
1
1
1
1
Device Dependent
No
Device Dependent
No
-
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer
~n
Yes
Multiple
Multiple
Device dependent
Yes
Bisync
Data General
DCU50
-
No
Data General
DCU 200
-
No
-
-
RDOS
DOS (diskette)
-
-
32
16
32
16
8
16
4
1
128
64
32
128
64
32
None
None
None
None
None
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
-
Yes
Yes
No
No
-
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
No
0.5-0.8
16
256K bytes
0.4
16
256K bytes
0.96
16
32K bytes
0.3
16
2K bytes
0.4
16
8K bytes
DMA. interrupt
DMA
DMA. interrupt
DMA, interrupt
DMA
DMA, interrupt
Interrupt
DMA
Interrupt
-
-
Incl. in price
HASP Workstation, IBM 3270,
Incl. in price
HASP Workstation, IBM 3270,
Sep. priced
IBM 2780,
Incl. in price
IBM 2780,
Incl. in price
IBM 2780,
2780,3780
2780, 3780
No
No
$11,500 to
over $100,000
$2,500 to
$50,000
64
-
-
-
memory and:
Communications lines
Mass storage
Other peripherals
Communications operating-software
Additional software supported
Turnkey Systems
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
Communications operating software-one-tirne cha~ge
Communications operating software-monthly charge
Date of first delivery
March 1975
Number installed to date
NA
Serviced by
Data General
-
Interrupt
3780,3270,
3780,3270,
HASP
HASP
No
No
No
$2,500 to
$15,000
-
$3,000
$3,900
-
-
-
-
Contact vendor
1975
NA
Data General
3780, 3270
Interrupt
-
January 1977
NA
Data General
-
September 1975 October 1978
NA
NA
Data General
Data General
!cOMMENTS
@
1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1979
C13-010-111
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
DigitalCommun- DigitalCommun- Digital Commun- Digital Commun- Digital Commun
ications Assoc. ications Assoc. ications Assoc. ications Assoc. ications Assoc.
115 Network
130 Network
150 Network
205/11 Host
250/10 NetProcessor
Processor
Processor
Interface
work Processor
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Virtually all
manufacturers
Virtually all
manufacturers
Virtually all
manufacturers
DEC
DEC
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
-
No
No
-
No
-
Yes
128
1
-
-
Yes
128
3
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Yes
32
32
Varies
Yes
63
32
Varies
Yes
128
32
Varies
No
-
Yes
128
32
Varies
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
INA
-
No
Yes
INA
-
-
Proprietary
-
128
24
See comments
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLCIUDLC,BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
Proprietary
-
63 async
24 async
32
12
-
-
No
-
-
-
Yes
INA
Proprietary
128
24
-
-
-
None
None
None
None
None
Yes
Yes
No
No
IBM 27411
3767
Yes
No
No
No
IBM 27411
3767
Yes
Yes
No
No
IBM 27411
3767
Yes
No
No
No
Yes
Yes
No
No
IBM 27411
3767
Yes
No
0.45
8
16K bytes
Yes
Yes
1.5
12
8K words
Yes
Yes
1.5
12
32K words
Yes
No
0.45
8
17K bytes
Yes
Yes
1.5
12
32K words
Interrupt
Interrupt
Interrupt
Interrupt
Interrupt
-
Interrupt
Interrupt
Interrupt
Interrupt
-
-
-
Interrupt
-
-
DMA
Communications operating software
Additional software supported
-
Incl. in price
DEC OS/8
Incl. in price
-
-
Incl. in price
DEC OS/8
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
$1,900 to
$8,100
$5,900 up
$9,900 up
$9,000
$17,900
-
-
-
-
-
-
-
-
June 1974
-
Supports host
selection, port
contention.
Full line and
modem control
facilities
Incl. in. price
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental 12-yr. lease, including maint., range)
-
Communications operating software-one-time cha~1!" Communications operating software-monthly charge
Date of first delivery
August 1978
Number installed to date
100
Serviced by
DCA
COMMENTS
MARCH 1979
Full line
and modem
control facilities
Incl. in price
-
-
-
DCAIDEC
DCA/DEC
January 1979
DCA
Full line and
modem control
Supports host
selection, port
contention.
Fuli line and
modem control facilities.
205 is a DEC
UNIBUS adapter.
Requires use
with DCA 115
or 150 for line
handling
June 1975
:&> 1979 DATAPRO RESEARCH CORPORATION, DELRAN,
REPRODUCTION PROHIBITED
NJ 08075 USA
July 1973
DCA/DEC
C13-010-112
Processors
Communications Processors-Basic Characteristics
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Digital Equipment Corp.
PDP-11 with
DECNET
Digital Communications
Corp.
CM 9100
Digital Communications
Corp.
CP-9000
MANUFACTURER AND MODEL
Digital
Systems
Corp.
Model 6101
Digital
Systems
Corp.
Model 6116
DEC PDP-11
Series. Prime.
HP 21 MX
DEC PDP-11
Series
DEC
IBM System/3
Model 8, 10. 12
IBM System/3,
Burroughs
B 1726, DSC
Galaxy/5
No
-
No
-
Ves
Varies
Varies
Terminal dependent
Ves
Varies
Varies
Terminal dependent
Ves
DNA
DMS-11
Several support
DECNET
Ves
1
1
10
Ves
16
1
32
No
Ves
Variable
1
32
-
-
Ves
Unrestricted
Unrestricted
Unrestricted
Ves
2 (1 Backup)
1
Unrestricted
Ves
Custom
No
EX-9000
No
-
480
480
60
32
32
1
Varies
Varies
Variqs
-
-
None
None
Varies
None
None
Ves
Ves
Ves
Ves
X.25
Ves
Ves
Ves
Ves
-
Ves
No
No
No
DDCMP
Ves
No
No
No
No
Ves
Ves
No
No
No
Ves
Yes
0.5
8
512K bytes
Ves
Yes
0.5
8
64K bytes
Ves
No
Ves
Ves
16
1024K words
No
No
-
DMA, interrupt
Interrupt
-
DMA, interrupt
DMA, interrupt
DMA. interrupt
-
Communications operating software
Additional software supported
Sep. priced
LOGOS. Debugger, Assembler
Incl. in price
Optional
Utilities
Incl. in price
-
Incl. in price
Special Utility
Packages
-
Turnkey Systems
Ves
Ves
No
Ves
Ves
Contact vendor
Contact vendor
$32,000 to
$125.000
$3,950
$10,000
-
-
-
$150
$325
Contact vendor
Contact vendor
August 1979
NA
DCC
-
-
-
-
-
February 1972
NA
DEC
March 1973
A.-a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of haH-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity. if all lines are full-duplex
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
ADCCP/HDLC(UDLC.BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogramrnable by manufacturer
Microprogramrnable by user
Main memory cycle time. usee.
Main memory word size. bits
Main memory storage capacity. words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABIUTY
Purchase price (system range)
Monthly rental (2-yr. lease. including maint., range)
Communications operating software-one-time chargE
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
~OMMENTS
July 1977
Over 150
DCC
Interrupt
-
0.45/0.3
-
No
-
-
No
-
1
1 @ 2400 bps
15
15
60
Digital Systems
-
8
32K bytes
Interrupt
--
Incl. in price
April 1977
4
Digital Systems
Network funcSingle microproctions tailored to essor-based configuration. Comcustomer. Sup. patible with
ports packet
switching. Com- CP-9ooo
patible with
CM-9100
~ 1979 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1979
C13-010-113
Processors
Communications Processors-Basic Characteristics
Digital
Systems
Corp.
Model 1300
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM 360/370,
S/3
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Yes
90
4
32
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Yes
Variable
4
32
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
No
Yes
Real time
Honeywell
DATANET
6678
HewlettPackard
HP 1000
Honeywell
DATANET
6632
Honeywell
DATANET
6624
Hewlett-Packard
M-, E-, and Fseries
Honeywell
Series 60
Level 66/68
Honeywell
Series 60
Level 66/68
Honeywell
Series 60
Level 66/68
No
Yes
4
1
32
Yes
4
1
32
Yes
4
1
32
-
No
-
Yes
DSN
IMAGE/1Ooo
RTE II, IV, Mil,
Mill
No
No
No
-
-
-
-
No
No
-
-
No
-
-
-
-
Traffic depen.
Traffic depen.
Traffic depen.
96
96
96
380 @ 110 bps
198 @ 300 bps
96
96
96
56 @ 110 bps
49 @ 300 bps
32
32
32
None
None
None
None
None
Yes
Yes
No
Yes
No
Yes
Yes
No
No
HP 2645A
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
-
-
-
Yes
Yes
0.35/0.595
12
16
64K to 1M byte 2M bytes
No
No
0.4/0.55
18
512K bytes
No
No
1.2
18
256K bytes
No
No
1.2
18
64K bytes
Interrupt
Interrupt
Interrupt
DMA, interrupt
DMA. interrupt
Interrupt
DMA
DMA
DMA
DMA
DMA
DMA
-
-
-
Communications operating software
Additional software supported
Sep. priced
RPG II, BASIC,
DBMS
Incl. in price
Macro assembler
Inc!. in price
Macro assembier
Inc!. in price
Macro assembier
Turnkey Systems
Yes
DS/1000 sep. pro
FORTRAN IV,
HP 1000 Assembier, Basic,
DATACAP/1000
No
Available
Available
Available
Monthly rental (2-yr. lease, including maint., range)
$38,000 to
$75,000
$21,000 to
$46,000
-
-
$124,874 to
$888,394
$2,893
$24,248
$81,780 to
$102,620
$1,896 to
$2,418
Communications operating software-one-time chargE
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
$190,870 to
$366,471
$4,711 to
$9,502
$4,000
$100
October 1976
20
Digital Systems,
General Electric
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
COMMENTS
MARCH 1979
~
90
90
Yes
Yes
-
-
$2,500
-
-
-
-
August 1973
1260
HewlettPackard
Distributed Systems Communications package
permits resource sharing
on network.
User-definable
network topology
October 1977
NA
Honeywell
September 1974 July 1974
NA
NA
Honeywell
Honeywell
Operati ng software is Network
Processing
Supervisor,
GRTS, GRT II,
and MCS
Operating softOperating software is Network ware is Network
Processing
Processing
Supervisor,
Supervisor,
GRTS, GRT II,
GRTS, GRTS II,
and MCS
and MCS.
Functionally
upgradeable
to 6632
1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
-
C13-010-114
Processors
Communications Processors-Basic Characteristics
Honeywell
DATANET
6616
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts anachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrat.or
Maximum no. of stations pollable on one line
IBM-DPD
3704
IBM-DPD
270X
Honeywell
Series 6000,
600
IBM System/
360,370
IBM System/
360, 370
IBM System/
360,370
Yes
4
1
32
Yes
4
1
32
No
-
-
Yes
4
4
Device dependent
Yes
1
1
Device dependent
No
Yes
1
1
Device dependent
Yes
1
1
Device dependent
No
-
Partial
1
1
Device dependent
Yes
-
-
Communications line capacity
No. of half-duplex lines physically anachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM SSC
ADCCP/HDLC(UDLC,SDLC)
IBM SDLC
Other
IBM-DPD
3705-11
Honeywell
Series 60
Level 66
As a free-standing communications processor
Network Architecture compliance
Full-capability data base System
Operating system
Effect on line capacity, if all lines are full-duplex
Honeywell
DATANET 355
No
No
No
-
-
-
No
-
8
8
8
96
96
96
352
352
32
32
32
32
176
24
-
None
None
Capacity halved
Capacity halved
NA
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
No
No
-
-
-
-
-
-
-
No
No
1.2
18
48K bytes
No
No
1.0
18
256K bytes
Yes
No
1.0
18
51 2K bytes
No
No
64K bytes
DMA
DMA
DMA
DMA
DMA
Interrupt
-
DMA
DMA
DMA
-
Interrupt
-
Communications operating software
Additional software supported
Incl. price
Macro assembier
Incl. in price
Macro assembier
-
Sep. priced
-
-
Turnkey Systems
Available
Available
Available
Available
Available
$46,800 to
$78,800
$1,166
$2,018
$146,400 to
$1.075M
$3,638 to
$30,595
$40,000 to
$137,000
$1,300 to
$4,000
$22,100 to
$27,350
$750 to $2,500
$12,400 to
$84,200
$308 to $1,800
-
1965
NA
IBM
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, US8C.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
Communications operating software-one-tirne cha~~
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
Sept. 1976
NA
Honeywell
November 1970
NA
Honeywell
$100
August 1976
NA
IBM
Operating software is General
Remote Terminal System
(GRTS, GRTS II).
Functionally
upgradeable
to 6624 or 6632
COMMENTS
@
Sep. priced
-
Option depen.
May 1973
NA
IBM
-
Operating software is Network
Processing
Supervisor.
GRTS, GRTS II
and MCS
1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1979
C13-010-115
Processors
Communications Processors-Basic Characteristics
f
IBM-GSD
Series 1
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts anachable to front-end
Maximum no. of stations pollable on one line
IBM System/370 IBM 360/370,
303X and compatible
IBM 360/370,
303X and compatible
IBM 3601370;
CDC 30001
6000, CYBER;
custom
IBM 360/370;
CDC 30001
6000, CYBER;
custom
~es
Yes
2
2
Unrestricted
Yes
4
8 (4 at a time)
Unrestricted
No
-
-
Yes
4
4
Device dependent
Yes
64
Applic. depend.
Device dependent
Yes
Yes
4
4
Device dependent
Yes
64
Applic. depend.
Device dependent
Yes
MAXNET
TOTAL
MAX IV
[varies
[varies
Device depen-
~.ent
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
!yes
Unrestricted
Unrestricted
Unrestricted
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
~es
Communications line capacity
No. of half-duplex lines physically anachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Modular Computer Systems
Modcomp
IV/CP
MEMOREX
1380
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Modular Computer Systems
Modcomp
II/CP2
MEMOREX
1270
No
-
-
No
-
-
No
SNA
RTPS
-
-
96
48
24
96
37 to 96
36
112t0216
64
Capacity halved
Yes
Yes
No
Yes
-
Future
MAXCOM,
MAX III
40
256
100-256
12-48
256
100-256
12-48
Capacity halved
None
None
None
-
Yes
Yes
No
No
SABRE, SITA
Yes
Yes
Planned
Planned
-
Yes
Yes
Yes
Yes
CDC UT-2oo,
3270,3780,
Univac 1004
Yes
No
0.66-0.88
16
256K bytes
See Comments
No
NA
NA
NA
No
No
0.54
16
64K
Limited
No
0.8-1.0
16
128K bytes
Yes
Yes
Yes
Yes
CDC UT-2oo,
3270,3780,
Univac 1004,
HASP
workstation
Limited
No
0.6
16
1M byte
DMA
DMA
DMA
NA
NA
NA
DMA, interrupt
DMA
NA
DMA
DMA
DMA
DMA
DMA
DMA
Communications operating software
Additional software supported
Sep. priced
PL/1, FORTRAN
NA
MASCOT (hostresident diagnostic system)
Incl. in price
MASCOT and
other host
resident utilities
Incl. in price
Macro assembier, FORTRAN
utilities
Incl. in price
Macro assembier, FORTRAN,
utilities
Turnkey Systems
No
No
No
No
No
$20,000 to
$60,000
$50,000 to
$230,000
$1,400 to
$6,400
$30,500 up
$53,750 up
-
-
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBMSDLC
Other
,
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
$28,000 to
$130,000
$750 to $3,500
Communications operating software~-time cha~~
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
$1,200 or
$20
November 1976
NA
IBM
NA
NA
1971
1800
Memorex
-
Exact number of
medium and
high speed lines
supported is dependent on message size. Can
emulate 3272
controller when
host-connected-
Available with
the 1270 is an
intelligent line
adapter with
ROM-based
microprogram
Custom software extensions are available, for a fee,
from Memorex
Systems Engineering Services
COMMENTS
MARCH 1979
1976
150
Memorex
-
Ma~73
Over
Modular Computer Systems
© 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
December 1975
Over 200
Modular Computer Systems
32 bit internal
bus and 4 port
memory is
standard
C13-010-116
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served bv one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
-.~,
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
ADCCP/HDLC(UDLC,BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogramrnable by manufacturer
Microprogramrnable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Massstor:,
Other per'
als
Modular Computer Systems
Modcomp
CLASSIC Series
NCR Data
Pathing
Systems
System 15
NCR Data
Pathing
Systems
System 150
NCR Century
and Criterion
Series
NCR Century
and Criterion
Series
Computers of
most major
manufacturers
Computers of
most major
rna nufacturers
Yes
4
4
Device dependent
Yes
Partial
1
2
Device dependent
No
Yes
2
2
Device dependent
Yes
Varies
Varies
Device dependent
Yes
NCR DNA
Yes
1
1
10
Yes
1
1
15
Yes
1
1
10
Yes
1
1
15
64
Applic. depend.
Device dependent
Yes
MAXNET
TOTAL
MAX IV
256
100-256
12-48
None
Yes
Yes
Yes
Yes
CDC UT-200,
3270,3780,
Univac 1004,
HASP
workstation
Yes
No
0.125
16/32
2M bytes
Communications operating software
Additional software supported
Incl. in price
Macro Assembier, FORTRAN,
utilities
Turnkey Systems
Monthly rental (2-yr. lease, including maint., range)
NCR
721
IBM 360/370,
CDC 30001
6000, CYBER,
custom
DMA, interrupt
DMA, interrupt
DMA, interrupt
PRICING AND AVAILABILITY
Purchase price·(system range)
NCR
621
-
No
Yes
Yes
Various
OAF, BDM, ROM OAF, BDM, RDM
DCOS 6
DCOS 6
-
-
-
TOX
254
160
Device- dependent
Capacity halved
253
52-253
10@ 56K
-
-
Capacity halved
None
None
Yes
Yes
Future
Future
NCR DLC
Yes
Yes
Yes
Yes
NCR DLC
No
Yes
No
No
DPI (esC)
No
Yes
No
No
DPI (BSC)
No
No
Yes
Limited
1.2
16
256K bytes
No
No
1.0
16
512K bytes
No
No
1.0
16
640K bytes
DMA
DMA
DMA
DMA, interrupt
DMA
DMA
DMA. interrupt
DMA
DMA
Sep. priced
Incl. in price
Optional or
user-programmed, custom
tailored
Yes
Incl. in price
Complete
range, plus
application
package
Yes
-
Interrupt
-
Incl. in price
-
23
23
-
-
No
Available
Available
$30,000 to
$130,000
$1,200 and up
$50,000 to
$28,000 up
$125,000
$1,650 to $4,500 $1,300 (1 yr.)
-
$200 and up
Communications operating software-one-time chafIIE Communications operating software-monthly charge
Date of first delivery
June 1978
Number installed to date
150
Serviced bv
Modular Computer Systems
!cOMMENTS
-
1969
NA
NCR
$32,500
$150
1976
Over 50
NCR
31
31
$105,000 and
up
$2,200
-
-
-
-
1978
1
NCR Data
Pathing Systems
1973
200
NCR Data
Pathing Systems
In February 1979. NCR acquired COMTEN. Inc.
~ 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
MARCH 1979
C13-010-117
Processors
Communications Processors-Basic Characteristics
1
fIIorfield
MANUFACTURER AND MODEL
I
CON/EM
Series 10
DCS 400
North
American
Philips
OS 714/81
North
American
Philips
Mark III
North
American
Philips
OS7
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM 360/370.
Univac. Comten
Most major
vendors
Custom
IBM System 1
370. custom
Custom
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations poll able on one line
Yes
64
64
32
Yes
8
8
20
Yes-RPQ
Unrestricted
Unrestricted
U nrestr icted
Yes
Appl. dependent
Appl. dependent
Appl. dependent
Yes
Appl. dependent
Appl. dependent
Appl. dependent
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Yes
64
64
32
Yes
8
8
20
Yes-RPQ
Appl. dependent
Appl. dependent
Appl. dependent
Yes
Appl. dependent
Appl. dependent
Appl. dependent
Yes
Appl. dependent
Appl. dependent
Appl. dependent
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
Norfield
Norfield
Norfield
Yes
No
No
Micro (Norfield)
Yes
Philips
Philips
Philips
Yes
Philips
Philips
DACOS
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
128
64
32
8
8
Appl. dependent
Appl. dependent
Appl. dependent
Appl. dependent
Appl. dependent
Appl. dependent
30-64
8-30
8
Capacity halved
None
Halved for
Halved for
Halved for
voice. wide band voice. wide band voice. wide band
Yes
Yes
No
No
Telex, TWX
Yes
Yes
Yes
Yes
Telex. Data
Speed 40/2.
Yes
RPQ
RPQ
RPQ
Effect on line capacity. if all lines are full-duplex
",('
~ommunica~ions
Nonleld
~ommunications
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
ADCCP/HDlC (UDlC. BDlC)
IBM SDlC
Other
-
RPQ
Yes
RPQ
RPQ
RPQ
Yes
Yes
Yes
RPQ
-
-
-
40/3
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time. usee.
Main memory word size. bits
Main memory storage capacity. words or bytes
No
No
0.96
16
128K bytes
Yes
No
0.5
16
16K bytes
Yes
No
2.0
36
1M byte
Yes
No
0.7
36
4M bytes'
No
No
1.0
16
32K bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
DMA. interrupt
Interrupt
Interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA, interrupt
DMA, interrupt
Programmed
DMA
DMA
Communications operating software
Additional software supported
Incl. in price
Incl. in price
Custom designed -
Incl. in price
Special utilities
Incl. in price
Special utilities
Incl. in price
SpeCial utilities
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
$60,000 to
$125,000
Contact vendor
$1.500 to $7.5OC Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
Contact vendor
-
-
-
-
-
-
-
March 1975
36
Norfield
Electronics
Multi-node
processor
systems avail.
Division of
Norfield Elec.
Inc
1967
Over 80
North American
Philips-CSD
Front -end to
Generally.
any communica- Installed in
custom-tailored
tions device;
configurations
intelligent
protocol. speed
and code
conversion
1976
Over 10
North American
Philips-CSD
'Up to four
processors may
be configured
together to
achieve max
main memory.
Each has ten
times throughput
of Mark 11\
1974
40
North American
Philips:CSD
Main application
is as multiplexer for
Mark III and
DS1714 host
systems
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease. including maint.. range)
Communications operating software--<>ne-time chitfge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
MARCH 1979
-
June 1976
Over 200
Norfield
© 1979 DATAPRO RESEARCH CORPORATION. DelRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
C13-010-118
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Om nus
Computer
Corporation
Omnus-1/CU
Periphonics
Corporation
T-COMM 7
Paradyne
PIX-II
Periphonics
Corporation
DTC
Petitin-Elmer
ln1Brdata
8/32
Univac 1100
series, 494;
others available
IBM 360/370,
303X, and compatible
IBM, NCR,
Burroughs,
Honeywell
IBM, NCR,
Burroughs,
Honeywell
IBM 360/370
Yes
8
16
256
Yes; see comm.
1
1
64 (interrupt)
Yes
4
8
50
Yes
4
8
50
Yes
1
2
-
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Yes
192
192
256
Yes
1
1
25
Yes
Variable
8
50
Yes
Variable
2
25
Yes
1
2
-
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
Available
Available
ECES
No
-
Yes
Yes
No
PERI-COMM
Yes
Yes
No
PERI-COMM
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Yes
OS/32MT,
ITAM
120 (per CPU)
20j80 (per CPU)
40 (per CPU)
20
3 (full-duplex)
45
10-45
Special quote
20
5-20
-
255
255
40
None
Capacity halved
Capacity halved
Halved
Capacity halved
Yes
Yes
Yes
Available
All Univac,
IBM 2741, 2780
Yes
RPQ
No
No
Paradyne Version SDLC
Yes
Yes
Yes
Yes
Audio response
(93 line max.)
Yes
Yes
Yes
Yes
Audio Response
(20 line max.)
Yes
Yes
Yes
Yes
Interdata Synchronous Mode
Yes
Yes
0.8
16 or 20
1M byte
Yes
No
0.5
16
32K words
No
No
0.8
16
2M bytes
No
No
0.9
16
56K words
Yes
No
0.75
32
1M bytes
DMA. interrupt
DMA
DMA, interrupt
DMA, interrupt
-
DMA, interrupt
DMA, interrupt
DMA. interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
Interrupt
DMA
DMA. interrupt
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDlC(UDlC,BDlC)
IBM SDlC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
Interrupt
Communications operating softwa~e
Additional software supported
Incl. in price
TIP, message
switch, store &
forward
Incl. in price
Special
utilities
Incl. in price
Data collection,
(BANK-FROMHOME)
Incl. in price
-
-
Turnkey Systems
Yes
Yes
Yes
Yes
Available
$125,000 to
$950,000
$3,500 up
$50,000 to
$75,000
$1,000 up
$70,000 and up
$50,000 and up
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including main!., range)
Communications operating software-one-time chargE Communications operating software-monthly charge
Date of first delivery
August 1974
Number installed to date
7
Serviced by
Omnus
COMMENTS
Line capacities
shown are for
simultaneously
active lines per
CPU (8 CPU's
max.). OmnusllCU is a replacement for
Univac CISP,
DCP and CTMC
Sep. priced
-
-
$50,000 to
$500,000
-
-
-
-
-
April 1976
600
Para dyne
1971
Over 200
Peri phonics
-
-
Fall 1977
Periphonics
PIX permits
remote peri pherals to access
host as if
locally attached.
Local PIX is bytechannel connected to host.
Remote PIX's
inputtolocal PIX
© 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
$7,500
July 1975
NA
Perkin-Elmer
Supports RJE
applications &
Interdata processor-to-processor communications
MARCH 1979
C13-010-119
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
Perkin-Elmer
Interdata
Perkin-Elmer
Interdata
7/32
6/16
Rock_llCollins
C-900
RockwellCollins
C-System
Sperry Univac
Distributed
Communications Processor
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM 360/370
IBM 3601370
IBM 360/370,
Univac 1100 &
490 Series,
custom
IBM 360/370,
DEC, custom
Univac Series
1100, Series 90
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Yes
1
2
-
Yes
1
2
-
Yes
2
16
Variable
Yes
Variable
Variable
Variable
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served bv one concentrator
Maximum no. of stations pollable on one line
Yes
1
2
-
Yes
1
2
-
Yes
Interface depen.
Interface depen.
Interface depen.
Yes
Interface depen.
Interface depen.
Interface depen.
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
-
-
Yes
Yes
Most
Limited
Comm. &
general
Yes
2
2
AT&T dependent
Yes
No limit
No limit
AT&T dependent
Yes
DCA
TELCON (TOT.)
TELCON
OS/32 MT,
OS/16 MT,
ITAM
ITAM
Yes
Most
Limited
Comm. &
general
255
255
40
128
128
20
1024
256
128
256
20
10
256
96
32
Capacity halved
Capacity halved
None
None
Capacity halved
Yes
Yes
Yes
Yes
Interdata Synchronous Mode
Yes
Yes
Yes
Yes
Interdata Synchronous Mode
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
REM-l, Uni"
scope NTR
Yes
No
0.75
32
1M bytes
Yes
No
1.0
16
64K bytes
No
No
0.9
32
262K bytes
No
No
0.9
16
256K bytes
Yes
No
0.92
16
128K bytes
Interrupt
DMA
DMA..interrupt
Interrupt
DMA
DMA, interrupt
DMA, interrupt
DMA
DMA
DMA. interrupt
DMA
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA, interrupt
Communications operating software
Additional software supported
Sep. priced
-
Sep. priced
-
Incl. in price
Editor Assembier, Link
Editor, etc.
Incl. in price
Editor Assembier, Link
Editor, etc.
Turnkey Systems
Available
Available
Yes
Yes
Incl. in price
NETGEN-DCP,
host-cross
assembler,
loader, sysgen
Optional
$15,000 to
$1.5M
-
$2,000 to
$25,000
$lM to $2.5M
-
Contact vendor
$350,000 to
$950,000
Contact vendor
$7,500
-
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM SSC
ADCCP/HDLC(UDLC,BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bvtes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABIUTY
Purchase price($ystem range)
Monthly rental (2-yr. lease, including maint., range)
Communications operating software-;)ne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
iCOMMENTS
MARCH 1979
@
$7,500
-
-
July 1974
NA
Perkin-Elmer
Spring 1976
NA
Perkin-Elmer
See 8/32
See 8/32
March 1974
January 1975
Over 10
Over 20
Rockwell-Collins Rockwell-Collins
1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
$100,000 to
$300,000
$2,500 to
$5.705
-
-
October 1977
NA
Sperry Univac,
Customer Engrg.
Communications line capacity is dependent on line
mix
C13-010-120
Processors
Communications Processors-Basic Characteristics
Sperry Univac
V77-200
MANUFACTURER AND MODEL
Sperry Univac
V77-400
Sperry Univac
V77-600
Sperry Univac
V77-800
Tandem
Computers Inc.
T16/212.
243.244
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM 360/370.
Univac, CDC
IBM 3601370,
Univac, CDC
IBM 360/370,
Univac, CDC
IBM 360/370,
Univac, CDC
BM 360/370,
~?3X, Burroughs,
erox Sigma
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Limited to
other V77
models
Limited to
other V77
models
Limited to
other V77
models
Limited to
other V77
models
Yes
1024
1024
256
Yes
Varies
Varies
Device depen.
Yes
Varies
Varies
Device depen.
Yes
Varies
Varies
Device depen.
Yes
Varies
Varies
Device depen.
Yes
1024
1024
-
Yes
Univac DCA
Yes
Univac DCA
PRONTOITOT.
VORTEX III
VTAM
Yes
Univac DCA
PRONTOITOT.
VORTEX III
Summit
Yes
Univac DCA
PRONTO/TOTAL
VORTEX III
Summit
Yes
Yes
ENSCRIBE
GUARDIAN
8
8
1
8
8
-
256
256
-
256
256
-
2048
2048
2048
None
None
None
None
Capacity halved
lYes
Yes
Planned
Planned
-
Ues
Yes
Planned
Planned
Yes
Yes
Planned
Planned
-
Yes
Yes
Planned
Planned
-
Yes
Yes
Yes
Yes
Burroughs
Bisync, TilNET
Yes
No
0.660
16
64K bytes
Yes
Yes
0.660
16
556K bytes
Yes
Yes
0.660
16
1M bytes
Yes
Yes
0.6
16
2M bytes
Yes
No
0.8/0.5
DMA. interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA, interrupt
DMA, interrupt
DMA
DMA, interrupt
DMA
DMA
DMA
Communications operating software
Additional software supported
Sep. priced
FORTRAN,
RPG-II
Sep. priced
COBOL, FORTRAN, RPG-II
Sep. priced
COBOL, FORTRAN, RPG-II
Sep. priced
COBOL, FORTRAN, RPG-II
Special utilities
Incl. in price
TAL, COBOL,
sort, editor,
entry, FORTRAN
Turnkey Systems
No
No
No
No
Optional
$35,000 to
$60,000
$45,000 to
$150,000
$55,000
$300,000
$75,000 to
$300,000
$150,000 up
-
-
Contact vendor
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrat.or
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
VORTEXIVTAM
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time. usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
-
-
Communications operating software-<>ne-time charge $3,500
$14,500
$14,500
Communications operating software-monthly charge
Date of first delivery
December 1976 December 1976 December 1976
Number installed to date
NA
NA
NA
Serviced by
Sperry Univac
Sperry Univac
Sperry Univac
Minicomp.
Opn
Minicomp. Opn.
Minicomp. Opn.
COMMENTS
System will
PRONTO operates either as a
stand-alone transaction system or
~mulate popular remote batch as a distributed data processing/
erminals such
transaction system, emulating IBM
[as IBM HASP,
3270 protocol to an IBM 370
!CDC 200 UT,
[and Univac
1004
$14,500
July 1979
NA
Sperry Univac
Minicomp. Opn.
V77 family
front -end capability is
with multiprocessor, shared
memory configurations
© 1979 DATAPRO RESEARCH CORPORATION, DELRAN, NJ 08075 USA
REPRODUCTION PROHIBITED
16
1M words
-
-,
May 1976
109
Tandem
A single Tandem
system may configure up to 16
processors; up to
255 systems can
be configured
in a single
network
MARCH 1979
~-
C13-010-121
Processors
Communications Processors-Basic Characteristics
Telefile
Computer
Products, Inc.
FECP-X
MANUFACTURER AND MODEL
TElENET
TP 1000
TElENET
TP 2200
Texas
Instruments
DXS
TElENET
TP 4000
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Xerox Sigma
5-9
Virtually all
manufacturers
Virtually all
manufacturers
Virtually all
manufacturers
Other network
DXS's, and IBM
370X front-ends
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Yes
1
2
256
Yes
3 or 7
3 or 7
Yes
Yes
272
272
Yes
4
4
16
Yes
Soft. dependent
Soft. dependent
Soft. dependent
Yes
3
3
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Asvnc. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDlC)
IBM SDlC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
-
MARCH 1979
Yes
288
288
-
Yes
4
1
16
Yes
TPOS
TPOS
TPOS
Yes
Future (SN2)
TINDX
DXS
4 or 8
-
72
36
9
788
144
36
60
44
16
Normally none
None
None
None
None
Yes
Yes
Yes
No
Yes
No
No
No
Yes
Yes
Yes
RPQ
X.25
No
Yes
No
Future
DXS Protocol.
2260
Yes
No
0.4
9
256K bytes
Yes
Option
0.75
16
128K bytes
DMA. interrupt
DMA. interrupt
DMA
DMA. interrupt
128
128
128
-
-
-
Yes
No
No
No
X.25
Yes
No
0.6 to 1.0
16
1M bytes
Yes
No
0.4
9
8K bytes
Yes
No
0.4
9
128K bytes
DMA. interrupt
DMA
DMA. interrupt
-
-
-
DMA. interrupt
DMA. interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
Incl. in price
Inc/. in price
-
-
Incl. in price
Optional. RPQ
Yes
Yes
Yes
Yes
$60,000 and up
$9.500
-
$500
$20.000 to
$275.000
$1.000 to
$13.700
$25.000 to
$350.000
$1.200 to
$17.500
-
-
Communications operating software-one-time charge Communications operating software-monthly charge
Date of first delivery
1978
Number installed to date
Serviced by
[felefile
(=-
No
-
-
Turnkev Systems
COMMENTS
-
Yes
Yes
-
Normally incl.
FORTRAN.
sort/merge.
ete.
MonthlV rental (2-yr. lease, including maint., range)
64
-
-
Yes
No
No
TCOS
Communications operating software
Additional software supported
PRICING AND AVAILABIUTY
Purchase price (system range)
-
64
-
-
September 1977 September 1977 August 1978
71
20
98
Telenet
Telenet
Telenet
Compatible with
Telenet Public
Data Network.
Compatible with
Telenet Public
Data Network.
Optional hardware redundancy available
Compatible with
Telenet Public
Data Network.
Optional hardware redundancy avail·
able
:g 1979 DATAPRO RESEARCH CORPORATION, DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
Inc/. in price
COBOL. Trans·
action Language. assem·
bier
Yes
$28.000 and up
-
1972
1400
Texas Instruments
Distributed
system with
multiple 960B
processors.
914A CRT's
and 4M bytes
mass storage
C13-010-122
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
TRAN Telecommunications Corp.
M3000 Digital
Circuit Switch
TRAN Telecommunications Corp.
M3200 PACUIT
Data Switch
Texas
Instruments
700TPS
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
TI 700 Series
terminals
IBM 360/370. CDC
6600.
H 6000. Univac.
Xerox
IBM 360/370. CDC
6600.
H 6000. PDP 11.
Univac. Xerox
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
No
No
-
No
-
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations poll able on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
-
Westinghouse
Canada Ltd .•
Electronic Sys.
W-1655-1CC
-
No
-
-
-
-
-
-
No
-
Yes
Unlimited
Up to 128
-
Yes
2048
Up to 32
No
-
No
-
Yes
8 (+8 back-up)
4
Response
dependent
No
-
-
Yes
-
-
-
PAM/D
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
4
4
4
200
150
30
550 @ 1200 bps
-
-
16
16
Future
Effect on line capacity. if all lines are full-duplex
-
None
None
Capacity halved
over 4800 bps
No
No
No
No
TI742
Yes
Yes
Yes
Yes
CCITTX.25
Yes
Yes
No
No
Yes
Yes
Yes
Future
RESERVEC II.
SITA/1 02411 040
Yes
Option
0.75
16
48K bytes
Yes
Yes
0.98
16
320K bytes
Yes
No
0.98
16
32K bytes
Yes
No
0.5
8
32K bytes
DMA. interrupt
DMA
DMA; interrupt
-
-
-
-
-
Communications operating software
Additional software supported
Incl. in price
Available
Sep. priced
Dial-out resource message
Sep. priced
Dial-out resource message
Sep. priced
To customer requirement
Turnkey Systems
Yes
No
No
Yes
$28,425
$150.000 up
Monthly rental (2-yr. lease. including maint .• range)
$6.500 up
$15.000 to
$20.000
$755
$75.000 to
$500.000
$3.000 up
Communications operating software-{)ne-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
$17.500
$750
1976
35
TRAN Telecommunications Corp.
Hybrid circuitpacket data
switch system
for large-scale
multiple
switchi ng-node
networks
$5.000
$250
1973
11
TRAN Telecommunications Corp.
For line concentration and
digital switch
for async terminals; aecessing multiple
hosts
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
ADCCP/HDLC(UDLC.BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time. usec.
Main memory word size. bits
Main memory storage capacity. words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
COMMENTS
-
1976
NA
Texas Instruments
Primarily a
terminal polling
system for TI
700 series
terminals
-
-
-
© 1979 DATAPRO RESEARCH CORPORATION. DELRAN. NJ 08075 USA
REPRODUCTION PROHIBITED
Interrupt
Interrupt
-
Contact vendor
-
Sept. 1976
100
User or third
party
Unit is modular.
uses 3 microprocessors. and
is the basis of
custom designed
special systems
MARCH 1979
C13-010-101
Processors
Communications Processors-Basic Characteristics
A catalogue of the most commonly used communications
processors along with their basic characteristics are presented on the following pages.
A prospective buyer can easily scan the charts to determine the scope of the options available for a given set of
requirements. The proper use of the charts will produce a
list of vendors and equipment that merit detailed study. It
is only from a detailed study of the equipment that an
advantageous price/performance selection can be made
for a given systems requirement. It would be a misuse of
the charts to eliminate a processor from consideration on
the basis of comparing characteristics finely without
checking to see if the architecture possesses a feature that
overcomes a seemingly small disadvantage.
To have been included in the charts, a processor must
have had appropriate hardware and software to function
either as a front-end processor, as a remote concentrator,
or as a freestanding communications processor.
A total of 90 communications processors offered
by 42 vendors are displayed in this report.
Subtlet~es of the basic characteristics of communications processors and how to use the accompanying charts are discussed.
For a perspective on the evolution and use of communications processors; a detailed look at frontend processors; and a presentation of users' ratings and usage patterns. see Report C09-013-1 01
behind the Management/System Guides tab in
this volume.
for inclusion. Equipment that vendors stated was no
longer being actively marketed was also excluded.
All of the actively marketed equipment known to Datapro that satisfies the qualifying criteria is represented,
with the exception of one vendor. The one vendor declined to supply enough meaningful information to merit
inclusion. Any other omission is because the product is
no longer marketed or is unknown to us.
The information presented on each communications processor in the accompanying charts serves not only to
describe the basic characteristics of the equipment, but
also assists in defining physical and throughput limitations. With one exception, all non-economic characteristics reduce themselves to one consideration: the throughput capabilities of the equipment relative to the specific
systems requirements. The exception is where the physical attachment limitations are exceeded before the processing capabilities are fully used.
Processors designed to perform only message switching
of voice grade lines were deemed not to meet the criteria
FOr example, the number of high speed communications
lines that are physically attachable to a processor usually
The 3690 shown at lefi is the latest system from the Com ten, the leading independent supplier of communications
processors. Based on new microprogrammabie processor architecture, the 3690 is
about five times as fast intemal(v as the
company's previous models and can service up to four times as many lines. To
support the 3690 in the large scale environment it is intended for, Comten has
developed the Data Switching System
(DSS) software system, which will interface with IBM's SNA architecture. In
addition to the now traditionalfunctions
of front-ending and remote concentration, DSS also supports data switching,
which permits the distribution ofprocessing tasks among nodes in a sophisticated
network.
(~
..•
AUGUST 1977
©1977 DATAPRO RESEARCH CORPORATION. DELRAN."'.J.08075
REPRODUCTION PROHIBITED
t:>
C13-010-102
Processors
Communications Processors-Basic Characteristics
t> exceeds the throughput capabilities. For that reason,
most vendors submitted a smaller value for the number of
lines attachable at the higher speeds than the equipment
could physically accommodate. The numbers more accurately describe the outer limits of the processor's
throughput limitations than the physical limitations. All
of the vendors were concerned that readers realize that
the line mix and the resource mix could radically alter the
number of lines that could be supported, physical port
availability notwithstanding. Datapro was most impressed with the responsible attitude universally exhibited,
and we are very optimistic that better ways of expressing
throughput capabilities will develop between the combined efforts of the suppliers of communications processors and Datapro.
COMMENTS ON THE ENTRIES IN THE
ACCOMPANYING CHARTS
Some of the items indicated in the accompanying charts
are self-evident; others offer information of a subtle
nature. The following discussion highlights some of the
subtleties.
will take on more and more importance. (The architecture of a front-end must conform to the host's architecture.) Underscoring this belief, is the fact that two major
mainframe manufacturers chose to list only their newest
communications processor in the accompanying charts.
In both cases, it is the only such item in their product
lines that conforms to their new network architectures.
Since the prime purpose in burdening communications
lines around the world with data is to either retreive
information or to add to the store of information, the
nature of the data base system supported should not be
overlooked. Actually it represents the "end" for which
one selects a "(communications processor) means". The
name of any data base system supported is listed for each
communications processor. Of course, a buyer may be
already committed to a file maintenance or data base
system and not be interested in this type of support.
As would be expected, the tasks performed by each of
the operating systems supplied with the hardware will
vary. The name of the operating system is noted so that
the reader will know what to look for in detailed reports
on such software offerings.
Network Arrangements Supported
Most of the equipment displayed herein, when operating
as a front-end, is restricted to supporting the host computer systems of specific mainframe manufacturers.
However, some vendors include in their product lines
front ends that can be customized; such equipment is well
represented in the charts. Not induded is the myriad of
older mainframes that have been fully written-off from
an accounting standpoint and, therefore, can be offered
at low enough prices to justify tailoring and dedicating
the overqualified equipment to function as a front-end.
From a network arrangement standpoint, the number of
direct connections a front-end cim support to one host
and the number of hosts a front-end can support become an important consideration, especially for fallback considerations. Usually, a small number represents
a special direct connection. A high number indicates that
the connection is via a regular communications line port
and does not mean that the vendor is suggesting that so
many connections to one or more host is a designed
capability.
When the number of poll able stations on one line is "I,"
the system, as standard, supports only point-to-point
terminal arrangements. When the communications processor functions as a remote concentrator, the number
of host/concentrator connections is also a consideration
from a network standpoint. Again, the number of connections permitted is primarily an indication of whether
a special interface or a regular communications line interface is used.
As the data communications industry continues to make
strides towards standardization, the network architecture
that a free-standing communications processor supports
Properly depicting communications line capacity is the
most difficult and the most controversial entry in the
accompanying charts. It would be very easy to utilize a
full page to describe the line capacity capabilities of just
one processor. As a reasonable alternative, Datapro
decided to show the number of half-duplex lines that
can be physically attached to the processor presuming
all lines were operating within a given speed range.- Three
ranges were chosen to represent low, medium, and high
line speeds. The ranges chosen were: up to 1800 bps,
2000 to 96000 bps, and over 9600 bps. The number of low
speed lines usually represents the physical and throughput limitation for asynchronous lines. Generally, the
medium and high speed lines represent the outer limits of
the throughput capabilities. The effect is using fullduplex lines is also indicated.
The terminal protocols supported by the processors are
listed. Even though the protocols supported are mostly
dependent upon the marketing philosophy of the vendors, the large number of vendors supporting the standardized bit-oriented protocols is an indication of things
to come.
Processor Characteristics
The communications processor's internal characteristics
give a general "feeling" for the equipment's throughput
capabilities. Hard wired equipment will receive a "No" to
the question: "Is the processor microprogrammable by
the manufacturer?" A ''yes'' means that the processor has
stored logic. If the processor is microprogrammable by
the user, one can expect the capability for increasing
throughput by properly microcoding frequently-used,
time-critical functions. If not properly done, the capability could adversely effect the installation. Main memory I:::>
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITEO
AUGUST 1977
-,,""
C13-010-103
Processors
Communications Processors-Basic Characteristics
lhe IBM 3705 and its little hrother, the
3704. are the standard o/'the industrl'.
Together they accountecifor two-thir~lv
of the processor responses in our survey.
However, i/'I BM was slow to move into
the area o/' complex communications
systems a few years ago, its customers
have heen slow to take advantage of the
henefits of true front-end processing.
Our survey indicated that few C?/' the
users were using either the 3704 or the
3705 as independent processing units;
the great majoritl' were satisfied with
emulating th~ 270X hardwire~f controllers.
(
l>' cycle time, main memory word size, and main memory
storage capacity offer a very general "feel" for throughput speed possibilities. However, sophisticated internal
architecture may enable the processor to be many times
faster than another processor with the same cycle time
and word size. That is another reason why we emphasize
that a detailed analysis is necessary, once the initial
selection is made from the charts.
The manner of data transfer between memory and communications lines, memory and mass storage, and memory and other supported peripherals becomes critical as
volume requirements rise and/or response times are
reduced. For high speed, high volume transmissions,
Direct Memory Access transfers instead of character
interrupt transfers become mandatory for reasonable
throughput rates.
The "Turnkey systems" entry informs potential users
whether or not the vendor is willing to provide a
complete system, including all applications software.
Pricing and Availability
The prices depicted in the charts represent a range of
typical configurations. The magnitude of the dollars
gives a ball-park indication of the expansion capabilities
of the equipment and should not be used to determine
price/perfonnance. Only a detailed price for a configuration satisfying specific requirements would give
such an indication.
AUGUST 1977
The absence of an entry for the monthly rental price
indicates that the vendor offers his equipment on a purchase only basis.
The charge for the processor's communications operating
software is given, when separately priced.
The date of first delivery is the date of the first production delivery.
With 90 communications processors to choose from,
there should be an offering for every need, whether the
network is a fully distributed network or a classic
master /slave network.
Suppliers of Communications Processors
Listed below for your convenience in obtaining additional information are the full names and addresses of
the 42 suppliers whose 90 products are summarized in the
following charts.
Action Communications Systems, Inc., 10300 N. Central
Expressway, Dallas, Texas 75231. Telephone (214) 7503000.
ASI Teleprocessing Inc. (formerly American Systems,
Inc.), 123 Water Street, Watertown, Massachusetts 021
Telephone (617) 923-1850.
n.
Austron, Inc., 1915 Kramer Lane, Austin, Texas 78758.
Telephone (512) 836-3523.
l>'
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
C13-010-104
Processors
Communications Processors-Basic Characteristics
I:> Burroughs Corporation, Second Avenue at Burroughs
Place, Detroit, Michigan 48232. Telephone (313) 972-7000.
Chi Corporation, 11000 Cedar Avenue, Cleveland, Ohio
44106. Telephone (216) 229-6400.
Collins Communication Switching Systems, Rockwell
International, P.O. Box 10462, Dallas, Texas 75207.
Telephone (214) 690-5000.
Computer Automation Inc .. 18651 Von Karman Avenue,
Irvine, California 92664. Telephone (714) 833-8830.
Computer Communications. Inc .• 2610 Columbia Street,
Torrance, California 90503. Telephone (213) 320-9101.
Computer Transmission Corporation (Tran). 2352 Utah
Avenue, El Segundo, California 90245. Telephone (213)
973-2222.
Com ten. 1950 W. County Road B-2, St. Paul, Minnesota
55113. Telephone (612) 633-8130.
Control Data Corporation. 8100 34th Avenue South,
Minneapolis, Minnesota 55440. Telephone (612) 8538100.
Data General Corporation. Route 9, Westboro, Massachusetts 01581. Telephone (617) 8911.
Data Pathing Inc .• 370 San Aleso Avenue, Sunnyvale,
California 94086. Telephone (408) 734-0100.
Digital Communications Associates. Inc.. 135 Technology
Park/ Atlanta, Norcross, Georgia 30092. Telephone (404)
448-1400.
Digital Communications Corp .. 19 Firstfield Road, Faithersburg, Maryland 20760. (301) 948-0850.
IBM Corporation. General Systems Division. 5775 Glenridge Drive N.E., Atlanta, Georgia 30301. Telephone
(404) 256-7000.
Intercomputer Corporation. 2201 East University Drive,
Phoenix, Arizona 85034. Telephone (602) 279-3561.
Interdata, Inc.• 2 Crescent Place, Oceanport, New Jersey
07757. Telephone (201) 229-4040.
Memorex Corporation. San Tomas at Central Expressway, Santa Clara, California 95052. Telephone (408)
987-1000.
MICOM Systems. Inc .• 9551 Irondale Ave., Chatsworth,
California 91311. Telephone (213) 882-6890.
Modular Computer Systems. 1650 W. McNab Road,
Fort Lauderdale, Florida 33309. Telephone (305) 9741380.
Norfield Electronics. Inc .• 3 Depot Place, East Norwalk,
Connecticut 06855. Telephone (203) 853-2777.
North American Philips Communications Corp .. 91 McKee Drive, Mahwah, New Jersey 07430. Telephone (201)
529-3800.
NCR Corp .• Main and K Streets, Dayton, Ohio 45479.
Telephone (513) 449-2000.
Omnus Computer Corporation, 6110 Executive Blvd.,
Rockville, Maryland 20852. Telephone (301) 881-4550.
Paradyne Corporation. 8550 Ulmerton Rd., Largo, Florida 33540. Telephone (813) 536-4771.
Periphonics Corporation. 75 Orville Drive, Bohemia,
New York 11716. Telephone (516) 567-1000.
Digital Equipment Corporation. 146 Main Street, Maynard, Massachusetts 01754. Telephone (617) 897-5111.
Sperry Univac (division of Sperry Rand Corporation).
P.O. Box 500, Blue Bell, Pennsylvania 19422. Telephone
(215) 542-40 11.
Digital Systems Corp.. 3 Main Street, Walkersville,
Maryland 21793. Telephone (301) 898-5184.
Tandem Computers, Inc., 20605 Valley Green Drive,
Cupertino, California 95014. Telephone (408) 255-4800.
GSC Data Systems. Inc. (formerly Wells TP Sciences,
Inc.), 99 West Sheffield Avenue, Englewood, New Jersey
07631. Telephone (201) 569-7711.
Telenet Communications Corp., 1050 17th Street N.W.,
Washington, D.C. 20036. Telephone (202) 637-7900.
Telefile Computer Products Incorporated, 17131 Daimler
St., Irvine, California 92705. Telephone (714) 557-6660.
. Harris Corp .• Data Communications Division, 11262
Indian Trail, P.O. Box 44076, Dallas, Texas 75234. Telephone (214) 620-4400.
Texas Instruments. Inc .. P.O. Box 1444, Houston, Texas
77001. Telephone (713) 494-5115.
Hewlett-Packard Company. 11000 Wolfe Road, Cupertino, California 95014. Telephone (408) 257-7000.
Varian Data Machines. 2722 Michelson Drive, Irvine,
California 92806. Telephone (714) 833-2400.
Honeywell Information Systems, Inc., 200 Smith Street,
Waltham, Massachusetts 02154. Telephone (617) 8908400.
Western Union Information Systems. Inc.. 82 McKee
Drive, Mahwah, New Jersey 07430. Telephone (201) 5294600.
IBM Corporation. Data Processing Division. 1133 Westchester Avenue, White Plains, New York 10604. Telephone (914) 696-1900.
Westinghouse Canada Ltd.. Electronic Systems Division.
P.O. Box 5009, Burlington, Ontario, Canada. Telephone
(416) 528-8811.0
©1977 DATAPRO RESEARCH CORPORATION. DELRAN. N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1977
('
,
.. j
C13-010-105
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
(
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
Action Communications
Systems TELECONTROLLER
ASI
Teleprocessing
Front-End
Nucleus 4000
ASI
Teleprocessing
Network Node
Nucleus 4010
ASI Teleprocessing Retail
Teleprocessing
Nucleus 41 00
-
IBM, NCR,
DEC, Data
General, Burroughs
IBM, NDR,
DEC, Data
General, Burroughs
IBM, NCR,
DEC, Data
General, Burr.,
or stand-alone
IBM System
360/370
Yes
1
1
32
Yes
256
256
256
Yes
256
256
256
Yes
256
256
256
Yes
255
1
127
Yes
1
1
32
Yes
256
256
256
Yes
256
256
256
Yes
256
256
256
Yes
No
No
Included
Yes
ASI-NCP
Yes
ASI-NCP
Yes
ASI-NCP
64
64
Austron
8500
No
-
No
-
-
ASI-DOS
ASI-DOS
ASI-DOS
-
-
128
24 to 64
4 to 24
128
24 to 64
4 to 24
128
24 to 64
4 to 24
25
16
8
None
20% reduction
20% reduction
20"10 reduction
-
Yes
Yes
No
No
TWX/Telex
Yes
YeS
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Ves
No
No
Various polling
disciplines
-
-
-
-
NCR, Sweda,
TI, MDS, TWX,
others
NCR, Sweda,
TI, MDS, TWX,
others
NCR, Sweda,
TI, MDS, TWX,
others
Yes
No
1.2/0.8
16
65K words
(DEC PDP 11)
Yes
No
1
16
256K bytes
(DEC PDP 11)
Yes
No
1
16
256K bytes
(DEC PDP 11)
Yes
No
1
16
256K bytes
Interrupt
DMA
DMA
DMA interrupt
DMA
DMA interrupt
DMA, interrupt
DMA
DMA interrupt
DMA interrupt
DMA
DMA interrupt
Communications operating software
Additional software supported
Included
None
Bundled (Iicen.)
Support for
various termiminals & hosts
Bundled (Iicen.)
Support for
various termiminals & hosts
Bundled (Iicen.)
Support for
various termiminals & hosts
Included in price
Diagnostic and
test routi nes
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
$90,000 to
$250,000
$70,000 to
$150,000
$2,000
$50,000 to
$130,000
$1,500
$75,000 to
$150,000
$2,000
$30,000 to
$80,000
$1,100 to
$3,000
Bundled
Bundled
February 1975
Over 12
ASI/DEC
subcontract
Can serve as
front -e nd to
ASI Braille Trans
lation or Text
Editing System
Bundled
Bundled
February 1976
8
ASI/DEC
subcontract
Includes packet
switching software
Bundled
Bundled
February 1 976
4
ASI/DEC
subcontract
Data Collection
Polling System
& Credit
Authorization
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
COMMENTS
AUGUST 1977
1971
78
Sorb us
TELECONTROLLER is
a store and
forward message switching
system with
front-end capability
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
Yes
Optional
0.75
16
64K bytes
DMA interrupt
-
DMA interrupt
1975
NA
Austron &
third party
Main market is
emulating IBM
local device interface to host
for remote
devices
C13-010-106
Processors
Communications Processors-Basic Characteristics
Chi
Communications
732
Collins Comm.
Switching
(Rockwell Int'l.)
C-System
Collins Comm.
Switching
(Rockwell Int'l.)
C-900
UNIVAC 1100
Series
IBM 360/370,
Univac 1100 &
490 Series,
custom
IBM 360/370,
DEC, custom
Yes
2
16
Variable
Yes
Variable
Variable
Variable
Yes
Interface depen.
Interfate depen.
Interface depen.
Yes
Interface depen.
Interface depen.
Interface depen.
Yes
Most
Limited
Comm. &
general
Burroughs
Burroughs
MANUFACTURER AND MODEL
B/876
B/866
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
All Burroughs,
IBM System
All Burroughs,
IBM System
360/370
360/370
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
No
No
Yes
-
8
8
-
-
Yes
32
32
100
Yes
7
7
100
Yes
Burroughs
No
MCP
Yes
Burroughs
No
MCP
-
Yes
Most
Limited
Comm. &
general
32
32
4
7
7
2
100
64
32
1024
256
128
256
20
10
None
None
None
None
None
Yes
Yes
Yes
Yes
-
Yes
Yes
Future
Future
REM1
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes
-
Yes
No
16
147K bytes
Yes
No
1
16
114K bytes
Yes
No
0.75
32
1M byte
No
No
0.9
32
262K bytes
No
No
0.9
16
256K bytes
DMA
DMA
Interrupt
DMA
DMA
Interrupt
DMA. interrupt
Interrupt
Interrupt
DMA. interrupt
DMA
DMA
DMA. interrupt
DMA
DMA, interrupt
Communications operating software
Additional software supported
Incl. in price
COBOL, RPG,
MPL, PSL,
GEMCOS
Incl. in price
COBOL, RPG,
MPL, PSL,
GEMCOS
Incl. in price
Incl. in price
Editor Assembier, Link
Ed itor, etc.
Incl. in price
Editor Assembier, Link
Editor, etc.
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
$75,000
$33,000
$50,000 to
$300,000
$1M to $2.5M
Monthly rental (2-yr. lease, including maint., range)
$2,300 up
$1,000 up
$350,000 to
$950,000
Contact vendor
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
COMMENTS
-
1
$25
August 1977
NA
Burroughs
$25
August 1977
NA
Burroughs
Network Definition Language is separately priced
Network Definition language is separately priced
Terminal
dependent
Yes
Unlimited
Unlimited
Terminal depen.
No
-
-
-
Contact vendor
-
-
August 1977
9
Chi Communications
March 1974
Over 20
Collins Comm.
Switching
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITEO
-
January 1975
Over 10
Collins Comm.
Switching
AUGUST,1977
C13-010-107
Processors
Communications Processors-Basic Characteristics
COMTEN.
Inc.
COMTEN 476
COMTEN.
Inc.
COMTEN 20
MANUFACTURER AND MODEL
COMTEN.
Inc.
COMTEN
3650 II
COMTEN.
Inc.
COMTEN
3670 II
COMTEN.
Inc.
COMTEN
3690
Custom
IBM 360/370.
custom
IBM 360/370,
Amdahl, CDC
Omega, Itel,
custom
IBM 360/370,
Amdahl, CDC
Omega, Itel,
custom
IBM 360,370,
Amdahl, CDC
Omega, Itel,
custom
No
-
Yes
4
4
4096
Yes
2
2
4096
Yes
4
4
4096
Yes
8
8
4096
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations poll able on one line
Yes
2
Unlimited
4096
No
-
Yes
2
Unlimited
4096
Yes
4
Unlimited
4096
Yes
8
Unlimited
4096
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
INFONET
Via INFONET
Proprietary
Yes
CNA
Yes
SNA. CNA
Yes
SNA. CNA
-
-
Yes
SNA, CNA
-
CTAM
DSS,COS
DSS, COS
DSS, COS
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
128
128
64
240
240
80
128
128
80
384
322
80
512
512
277
No effect
No effect
No effect
No effect
No effect
Yes
Yes
Yes
No
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
-
-
-
-
Yes
Yes
'Yes
Yes
No
No
0.75
16
128K bytes
No
No
0.75
32
512K bytes
No
No
0.65
16
256K bytes
No
No
0.65
16
512K bytes
Yes
No
0.65
64
1024K bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
DMA
Communications operating software
Additional software supported
NA
Full range via
INFONET
Included
CODEL
Included
Data Switching
System (DSS)
Included
Data Switching
System (DSS)
Included
Data Switching
System (DSS)
Turnkey Systems
No
Yes
Yes
Yes
Yes
$60,000 to
$120,000
NA
$100,000 to
$350,000
NA
$40,000 to
$120,000
$1,000 to
$3,000
$80,000 to
$320,000
$2,000 to
$8,000
-
-
-
$100,000 to
$500,000
$2,500 to
$12,000
.$300-$500
4Q 1977
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
NA
NA
March 1971
Over 60
Computer Sciences Corp.
-
Sept. 1975
Over 60
COMTEN
$300-$500
March 1975
Over 200
COMTEN
$300-$500
March 1972
Over 200
COMTEN
COMMENTS
c
AUGUST 1977
©1977 DATAPRO RESEARCH CORPORATION. DELRAN. N.J. 08075
REPRODUCTION PROHIBITED
-
-
-
COMTEN
C13-010-108
Processors
Communications Processors-Basic Characteristics
Computer
Automation
Inc.
LSI-2, 3,4
MANUFACTURER AND MODEL
Computer
Communications Inc.
CC-80
Computer
Communications Inc.
CC-8
Computer
Communications Inc.
CC-8000
Computer
Transmission
M3200 PACUIT
Data Switch
IBM 360/370,
CDC 6600,
H 6000, Univac,
Xerox
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Application
dependent
IBM 360/370,
custom
IBM 360/370,
custom
IBM 360/370,
custom
NElWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Yes
32
32
128
Yes
11
11
Device dependent
Yes
11
11
Device dependent
No
Yes
7
7
Device dependent
No
Yes
11
11
Device dependent
No
-
-
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
32
32
128
-
-
Yes
Unlimited
Up to 64
-
-
-
Yes
NCS
Included
NCS-MS
32
32
Application
dependent
None
240
240
Varies
240
240
Varies
240
240
Varies
200
150
30
Up to 88
Up to 88
Up to 88
None
Yes
Yes
Yes
Yes
User writeable
Yes
Yes
Yes
Yes
Custom
Yes
Yes
Yes
Yes
Custom
Yes
Yes
Yes
Yes
Custom
Yes
Yes
8
16K bytes
Yes
No
0.36
16
40M bytes
Yes
No
0.36
16
40M bytes
Yes
No
0.36
16
40M bytes
Yes
No
0.98
16
512K bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
DMA, interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA, interrupt
DMA, interrupt
DMA interrupt
DMA, interrupt
DMA. interrupt
-
Communications operating software
Additional software supported
Sep, priced
Incl. in price
Distributed
Networking
Inc!. in price
-
-
Inc!. in price
Message
Switching
-
Turnkey Systems
Yes
Yes
Yes
Yes
No
$3,000 and up
$85,000 to
$500,000
$1.400 up
(3 yr.)
$60,000 to
$200,000
$1,100 up
(3 yr.)
$250,000 up
$150,000 to
$lM
$6,000 up
-
-
$17,500
$600
1976
NA
Computer
Transmission
Hybrid circuitpacket data
switch system
for large-scale
mUltiple
switching-node
networks
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLe)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
No
-
-
-
No
No
-
-
-
Monthly rental (2-yr. lease, including maint., range)
-
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
Contact vendor
-
-
-
-
Fall 1977
May 1974
100
CCI
June 1974
35
CCI
October 1974
10
CCI
CC-8 is 270X,
370X emulator
only (no message switching)
Message
Switching
software is
custom and is
separately
priced
COMMENTS
-
Various service
companies
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
No
-
-
, Yes
Yes
No
Yes
CCITI X.25
Sep. priced
AUGUST 1977
C13-010-109
Processors
Communications Processors-Basic Characteristics
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front·end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations poll able on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Control
Data Corp.
CYBER 1000
(DNS)
Control
Data Corp.
2550-2
Control
Data Corp.
2552-1
IBM 360/370,
CDC 6600,
PDP-ll ,
H 6000, Univac,
Xerox
IBM 360/370,
Univac 11 OB,
Sigma 5
CDC CYBER,
IBM 370,
Univac 1100
Series
CDC 6000;
CYBER 70, 170;
3000L Series
CDC 6000;
CYBER 70, 170
Series
No
Yes
1
2
Protocol dependent
No
Yes
1
4
Protocol dependent
Yes
2
Unlimited
Protocol dependent
Yes
DNS
No
DNS
Yes
2
2
Protocol dependent
Yes
1
Up to 16
Protocol dependent
No
Yes
2
2
Protocol dependent
Yes
1
Up to 16
Protocol dependent
No
-
-
128
128
32
128
128
128 @ 19.2K;
2@40.8K
None
254
254
254 @ 19.2K,
2 @40.8K
None
-
-
Yes
Unlimited
Up to 32
-
No
-
-
-
-
Yes
PMX
No
PMX
550 @ 1200 bps 128
128
32
-
None
None
None
Yes
No
No
No
Correspondence, EBCDIC
Yes
Yes
No
No
HASP MIL;
Mode 4A. 4C;
CDCCP
Yes
Yes
No
No
CDCCP, ISO
1745, ATT, CDT
Yes
Yes
Yes
No
HASP MIL;
Mode 4A. 4C;
CDCCP
Yes
Yes
Yes
No
HASP MIL;
Mode 4A. 4C;
CDCCP
No
No
0.98
16
32K bytes
No
No
1.2
27
768K bytes
No
No
1.2
27
768K bytes
Yes
Yes
0.55
18
262K bytes
Yes
Yes
0.55
18
512K bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
-
DMA
DMA
DMA
DMA
DMA
DMA
DMA. interrupt
DMA. interrupt
-
-
DMA, interrupt
DMA. interrupt
Communications operating software
Additional software supported
Incl. in price
-
Sep. priced
FORTRAN IV,
assembler,
utilities
Sep. priced
FORTRAN IV,
assembler,
utilities
Sep. priced
PASCAL, crosscompilers, network products
Sep. priced
PASCAL, crosscompilers, network products
Turnkey Systems
No
Yes
Yes
Yes
Yes
$75,000 to
$500,000
$450,000 to
$900,000
$13,500 to
$24,500 (3 yr.)
$34,100
$730+2,450 OTC
June 1973
42
Control Data
Corporation
Protected Message Exchange
(PMX) system
inlcudes multiprocessor interconnects, recovery, and load
sharing
$250,000 to
$550,000
$6,300 to
$16,000 (3 yr.)
$27,520
$590 +1;960 OTC
October 1975
20
Control Data
Corporation
Distributed Network System
(DNS) provides
full network
architecture
$59,300 to
$152,800
$2,054 to
$5,500 (3 yr.)
$3,940
$120 + 570 OTC
June 1975
122
Control Data
Corporation
Conforms with
DNS network
architecture
$89,200 to
$227,000
$2,900 to
$9,800 (3 yr.)
$3,940
$120 + 570 OTC
August 1977
2
Control Data
Corporation
Features two
processors;
conforms with
DNS network
architecture
Effect on line capacity, if all lines are full-duplex
(
Control
Data Corp.
CYBER 1000
(PMX)
Computer
Transmission
M3000 Digital
Circuit Switch
MANUFACTURER AND MODEL
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
-
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
COMMENTS
AUGUST 1977
-
1973
NA
Computer
Transmission
Used as a line
concentrator
and digital
switch for
async. terminals
to access multipie computers
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
C13-010-110
Processors
Communications Processors-Basic Characteristics
Data General
ECLIPSE
S-130
MANUFACTURER AND MODEL
Data General
NOVA 3
Data
Pathing Inc.
2000 Series
Data General
microN OVA
Data
Pathing Inc.
150 Series
IBM 360/370.
Data General.
custom
IBM 360/370.
Data General.
custom
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Yes
Multiple
Multiple
Device dependent
Yes
Multiple
Multiple
Device dependent
Yes
Bisync/SDLC
INFOS
AOS. RDOS
Yes
Multiple
Multiple
Device dependent
Yes
Multiple
Multiple
Device dependent
Yes
Bisync/SDLC
Yes
Multiple
Multiple
Device dependent
Yes
Bisync/SDLC
Yes
DPI
RDOS
DOS (diskette)
DCOS
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
128
64
16
64
32
8
32
4
1
6
-
-
Effect on line capaCity. if all lines are full-duplex
None
None
None
None
None
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
DPI (BSC)
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations poll able on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
ADCCP /HDLC (UDLC. BDLC)
IBM SDLC
Other
-
IBM 360/370.
Data General.
custom
IBM 360/370.
custom
Computers of
most major
manufacturers
No
Yes
1
1
15
Yes
3
3
16
No
Yes
3
3
16
-
-
-
-
-
Yes
Various
DAF & DDM
DCOS 6
3.1
31
-
-
-
No
No
No
No
DPI
Yes
Yes
0.5-0.8
16
256K bytes
Yes
No
0.7
16
128K bytes
Yes
No
0.96
16
32K bytes
No
No
8
16
16K bytes
No
No
1
16
640K bytes
DMA. interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA. interrupt
Interrupt
Interrupt
Interrupt
DMA. interrupt
DMA
DMA
DMA. interrupt
DMA
DMA
Communications operating software
Additional software supported
Incl. in price
HASP Workstation. IBM 3270.
2780.3780
Incl. in price
HASP Workstation. IBM 3270.
2780.3780
Sep. priced
IBM 2780.
3780.3270
Turnkey Systems
No
No
No
Incl. in price
Complete
range. plus
application
packages
Yes
Incl. in price
Complete
range. plus
application
package
Yes
$11.500 to
over $100.000
$5.000 to
$75.000
$2.500 to
$15.000
$24.000
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time. usec.
Main memory word size. bits
Main memory storage capacity. words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease. including maint .• range)
-
-
-
$812 to $900
$105.000 and
up
$2.200
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
Contact vendor
-
-
-
March 1975
NA
Data General
1975
NA
Data General
January 1977
NA
Data General
1967
90
Data Pathing
Inc.
1973
200
Data Pathing
Inc.
COMMENTS
©1917 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1977
C13-010-111
Processors
Communications Processors-Basic Characteristics
(
MANUFACTURER AND MODEl
DECsystem 10,
IBM 360/370,
Amdahl 470
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Partial support
1
Unlimited
1024
No
-
No
Digital Communications
Associates, Inc.
SMARTI
MUX-RX
Digital Communications
Associates, Inc.
MICROI
MUX
-
-
DEC, Prime,
Tempus
Digital Communications
Corp.
CM 9108
DEC, Prime,
Tempus
No
No
No
No
-
-
-
-
-
-
-
-
-
-
Yes
Any line
Any line
63
Yes
Unlimited
Unlimited
Unlimited
Yes
Unlimited
Unlimited
Unlimited
No
Yes
See Comments
See Comments
See Comments
Yes
See Comments
See Comments
See Comments
-
Yes
Any line
Any line
63/1024
No
-
-
-
-
-
-
-
Digital Communications
Corp.
CP-9000
128 async.
24 async.
63/128 async.
24 async.
62 async.
24 async.
-
-
-
480 async.
8
480async.,240sync 60 sync.
-
None
None
None
None
None
Yes
Yes
No
No
DDCMP
Yes
Yes
No
No
DDCMP
Yes
Yes
No
No
DDCMP
Yes
Yes
No
Yes (1-78)
X.25 (1-78)
Ves
No
No
No
-
Yes
Yes
1.5
12
32K words
Yes
Yes
1.5
12
8K/32K words
Yes
Yes
2.0
8
16K bytes
Yes
Yes
0.5
8
524K bytes
Yes
No
0.5
8
8K bytes
Interrupt (FIFO)
None
Interrupt
Interrupt
None
Interrupt
Interrupt
None
Interrupt
-
-
Communications operating software
Additional software supported
Incl. in price.
OS/8
Incl. in price
I ncl. in price
-
-
Turnkey Systems
Yes
Yes
Yes
Sep. priced
Cross Assembler lloader,
simulator
debugger
Yes
Sep. priced
Cross Assembier Iloader,
simulator
debugger
Yes
$22,000 to
$63,000
$852 to $2,724
$7,000 to
$47,000
$295 to $2,169
$8,500 to
$24,600
$300 to $1,098
Contact vendor
Contact vendor
-
-
Effect on line capacity, if all lines are full-duplex
(
Digital Communications
Associates, Inc.
SMARTI
MUX-HX
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-Yr. lease, including maint., range)
COMMENTS
-
-
-
-
-
-
-
-
July 1973
NA
DEC
June 1974
NA
DEC
3rd Q 1977
NA
DCA
Host-end statistical multiplexor; host demultiplexes character stream
Node concentrators for multiple SMARTI
MUXs; remoteend statistical
multiplexor
Remote-end
statistical
multiplexor
2nd Q 1977
4
Digital Communications Corp.
Network software is tailored
for customer;
supports packet
switching network
2nd Q 1977
1
Digital Communications Corp.
Network software is tailored
for customer;
supports packet
switching network
(AUGUST 1977
Interrupt
-
-
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
DMA. interrupt
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
C13-010-112
Processors
Communications Processors-Basic Characteristics
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Digital
Systems
Corp.
Model 6101
Digital Equipment Corp.
PDP-11 with
DECNET
MANUFACTURER AND MODEL
IBM System/3,
Burroughs
B 1726, DSC
Galaxy/5
IBM 360/370,
S/3
All major manufacturers
Yes
Varies
Varies
Terminal dependent
Yes
Varies
Varies
Terminal dependent
Yes
DNA
DMS-ll
Several support
DECNET
Yes
1
1
10
Yes
16
1
32
Yes
90
4
32
Yes
4
4
Unlimited
No
Yes
Variable
1
32
Yes
Variable
4
32
Yes
256
48
Unlimited
No
Yes
No
Avail. fall 1977
Real time
Yes
Various
GSC
GSC
No
-
-
1
1 @ 2400 bps
15
15
-
Effect on line capacity, if all lines are full-duplex
Varies
None
Yes
No
No
No
DDCMP
Yes
No
0.45/0.3
16
1024K words
-
DMA. interrupt
DMA. interrupt
DMA, interrupt
-
I ncl. in price
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
GSC Data
Systems
Inc.
T578 Systems
IBM System/3
Model 8, 10, 12
Varies
Varies
Varies
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
'Main memory storage capacity, words or bytes
Digital
Systems
Corp.
Model 1300
DEC
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
Digital
Systems
Corp.
Model 6116
90
90
256
256
-
-
-
None
None
None
Yes
No
No
No
No
Yes
Yes
No
No
No
Yes
Yes
No
Yes
No
Yes
Yes
Future
Future
X.25
No
No
Yes
Yes
Yes
Yes
8
32K bytes
12
64 to 1 M byte
Yes
No
0.96
16
128K words
Interrupt
Interrupt
Interrupt
Interrupt
DMA
DMA. interrupt
DMA. interrupt
-
Sep. priced
RPG II, BASIC,
DBMS
-
-
-
-
Incl. in price
-
Incl. in price
Communications operating software
Additional software supported
-
I ncl. in price
Special Utility
Packages
Turnkey Systems
No
Yes
Yes
Yes
Yes
$32,000 to
$125,000
$3,950
$10,000
$38,000 to
$75,000
Monthly rental (2-yr. lease, including maint., range)
-
$150
$325
-
$60,000 to
$500,000
$1,500 to
$1,400
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
-
March 1973
60
Digital Systems
April 1977
4
Digital Systems
$4,000
$100
October 1976
10
Digital Systems,
General Electric
PRICING AND AVAILABILITY
Purchase price (system range)
February 1972
NA
DEC
-
December 1969
NA
GSC
COMMENTS
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1977
C13-010-113
Processors
Communications Processors-Basic Characteristics
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM SSC
ADCCP/HDLC (UDLC, SDLC)
IBM SDLC
Other
IBM 360/370
IBM 360/370;
CDC 6000/
7000, Cyber
170; Univac
1100 Series
Yes
1
2
Unlimited
Yes
3
3
1
Honeywell
Series 60
Level 66/68
No
Yes
4
1
32
Yes
4
1
32
-
-
No
No
No
-
-
No
No
-
-
-
Yes
DSN
IMAGE/1ooo
RTE II, III
38-152
76
-
26
26
26
Traffic depen.
Traffic depen.
Traffic depen.
96
96
96
380@ 110 bps
198 @ 300 bps
96
96
96
None
Varies
None
None
None
Yes
Yes
No
No
No
Late 1977
No
No
UT-2oo, Univac
1004,COPE
Mode
Yes
No
No
No
HP 2645A
Yes
Yes
Yes
No
Yes
Yes
Yes
No
-
-
No
No
1.5
12
296K words
Yes
Yes
0.35/0.595
16
2M bytes
No
No
No
No
1.2
18
256K bytes
DMA
DMA, interrupt
DMA. interrupt
Interrupt
-
Yes
No
1
16
128K bytes
-
-
DMA
Communications operating software
Additional software supported
I ncl. in price
Cross-assembler
Incl. in price
Cross-assembier
Turnkey Systems
Yes
AUGUST 1977
Honeywell
Series 60
Level 66/68
-
-
COMMENTS
HewlettPackard
21MX, 2100
Series
No
Interrupt
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
Honeywell
DATANET
6632
-
-
Monthly rental (2-yr. lease, including maint., range)
Honeywell
DATANET
6678
No
Data transfer between memory and:
Communications lines
Mass storage
Other periphera Is
PRICING AND AVAILABILITY
Purchase price (system range)
HewlettPackard
HP 1000
-
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Harris
Corp.
CC-65
Harris
Corp.
4705
MANUFACTURER AND MODEl
No
No
-
-
-
-
004/0.55
18
512K bytes
-
DMA
DMA
DMA
DMA
-
-
Incl. in price
FORTRAN IV,
ALGOL,21 mx
assembler
Incl. in price
Macro assembier
Incl. in price
Macro assembier
Yes
No
Available
Available
$40,000 to
$140,000
$1,000 to
$3,500
$150,000 to
$400,000
$3,000 to
$10,000
$192,000 to
$358,500
$4,356 to
$8,000
$128.474 to
$5.98M
$2,519 to
$12,000
-
-
$21,000 to
$62,000
$820 to
$2.450 (3 yr.)
$3,500
-
-
-
1970
NA
Harris
1968
NA
Harris
August 1973
NA
HewlettPackard
Distributed Systems Communications package
permits resource sharing
on network
October 1977
NA
Honeywell
September 1974
NA
Honeywell
-
Also supports
IBM HASP
Multi-leaving
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
-
Operating softOperating software is Network ware is Network
Processing
Processing
Supervisor,
Supervisor,
GRTS
GRTS
C13-010-114
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Honeywell
DATANET
Honeywell
6624
6616
D~TANET
Honeywell
Series 60
Level 66/68
Honeywell
Series 60
Level 66
Honeywell
Series 6000,
600
Yes
4
1
32
Yes
4
1
32
Yes
4
1
32
No
-
No
No
-
-
-
-
-
-
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
No
No
No
-
-
-
-
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
96
96
96
8
8
8
None
Yes
Yes
Yes
No
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
Honeywell
Honeywell
Remote NetRemote Network Processor work Processor
DATANET707 Series 60/6-06
Honeywell
DATANET 355
Honeywell
Series 60
Level 66,
Series 6000
No
-
-
Honeywell
Series 60
Level 66,
Series 6000
No
-
-
-
Yes
6
1
32
Yes
6
1
32
Yes
DSE
Yes
DSE
-
-
OSI700
OSI700
96
96
96
128
64
8
128
64
8
None
None
None
None
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
-
-
No
No
1.2
18
48K bytes
No
No
1.0
18
64K bytes
No
No
0.75
16
64K words
Yes
No
1.0
16
64K words
DMA
DMA
-
-
No
No
1.2
18
64K bytes
-
-
-
DMA
DMA
DMA
DMA, interrupt
DMA, interrupt
DMA. interrupt
DMA, interrupt
DMA. interrupt
DMA. interrupt
Communications operating software
Additional software supported
Incl. in price
Macro assembier
Incl. in price
Macro assembier
Incl. in price
Macro assembier
Incl. in price
FORTRAN,
assembler
Incl. in price
FORTRAN,
assembler
Turnkey Systems
Available
Available
Available
Available
Available
$85,380 to
$168,000
$1,676 to
$3,507
$50,000 to
$62,000
-
$118,320 to
$800,000
-
$20,000 to
$150,000
$700 to $3,600
$15,000 to
$100,000
-
-
-
-
-
July 1974
NA
Honeywell
Sept. 1976
NA
Honeywell
November 1970
NA
Honeywell
June 1974
NA
Honeywell
DMA
DMA
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
-
Operating softOperating software is Network ware is General
Remote TermiProcessing
Supervisor,
nal System
(GRTS)
GRTS. Supports
up to 380 lines
at 110 bps and
up to 198 lines
at 300 bps
-
-
October 1976
NA
Honeywell
Operating software is Network
ProceSSing
Supervisor,
GRTS. Supports
up to 408 lines
at 110 bps and
up to 198 lines
300 bps
\
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1977
/
"
C13-010-115
Processors
Communications Processors-Basic Characteristics
(
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
r
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
Honeywell
Remote Network Processor
DATANET700
IBM-DPD
3704
IBM-DPD
270X
Honeywell
Series 6000,
Level 66 Series
IBM System/
360, 370
IBM System/
360, 370
IBM System/
360,370
No
Yes
4
4
Device dependent
Yes
1
1
Device dependent
No
Yes
1
1
Device dependent
Yes
1
1
Device dependent
No
Partial
1
1
Device dependent
No
-
-
-
-
-
64
64
2
352
352
32
32
32
32
-
24
None
Capacity halved
Capacity halved
NA
Capacity halved
Yes
No
No
No
VIP,MMI
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
No
Yes
Yes
No
Yes
-
-
-
-
Yes
Yes
0.775
16
64K words
Yes
No
1.0
18
256K bytes
No
No
No
No
-
Yes
No
0.66-0.88
16
128K bytes
DMA
DMA
DMA
DMA
DMA
DMA
-
-
-
-
-
Yes
4
1
32
Yes
No
DBM
OSl7oo
Communications operating software
Additional software supported
Sep. priced
Incl. in price
FORTRAN, OAF, host resident
cross compiler
Turnkey Systems
Available
Monthly rental (2-Yr. lease, including maint., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
PRICING AND AVAILABILITY
Purchase price (system range)
COMMENTS
AUGUST 1977
IBM-GSD
Series 1
IBM-DPD
3705-11
-
64K bytes
Interrupt
Sep_ priced
-
No
176
24
-
Interrupt
-
-
No
-
-
Yes
96
48
Unlimited
Yes
SNA
RTPS
96
48
DMA
DMA
DMA
-
-
Sep. priced
PL/l, FORTRAN
Available
Available
Available
No
$21,000 to
$120,000
$717 to $5,200
$40,000 to
$150,000
$1,300 to
$4,000
$26,000 to
$50,000
$750 to $2,500
$12,400 to
$84,200
$308 to $1 ,800
$20,000 to
$60,000
None
None
January 1975
150
Honeywell
-
-
-
$100
August 1976
NA
IBM
Option depen.
May 1973
NA
IBM
-
$1,200 or
$20
November 1976
NA
IBM
Currently supports multilevel
remote job
entry; application programs
are available
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
1965
NA
IBM
-
Exact number of
medium and
high speed lines
supported is dependent on
message size
C13-010-116
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEL
Intercomputer
Corp.
Intercomputer
1370N
IBM 360/370
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Interdata
7/32
Interdata
8/32
IBM 360/370
MEMOREX
1270
Interdata
6/16
IBM 360/370
IBM 360/370
IBM 360122195,370/135
and up
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full·duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
Yes
2
2
Unlimited
Yes
1
2
-
-
No
Yes
1
2
Yes
1
2
-
-
Yes
Yes
Yes
-
-
-
-
-
Yes
1
2
-
Yes
1
2
-
Yes
-
Yes
1
2
1
No
-
-
No
-
-
-
OS/32 MT,
OS/16 MT,
ITAM
ITAM
255
255
40
255
255
40
128
128
20
96
37 to 96
36
None
Capacity halved
Capacity halved
Capacity halved
NA
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Interdata Synchronous Mode
Yes
Yes
Yes
Yes
Yes
Interdata Synchronous Mode
Yes
Yes
Yes
Yes
Yes
Interdata Synchronous Mode
Yes
Yes
No
No
No
Yes
Yes
1
18
128K words
Yes
No
0.75
32
1 M bytes
Yes
No
0.75
32
1M bytes
Yes
No
1.0
16
64K bytes
No
No
NA
NA
NA
DMA, interrupt
Interrupt
DMA
DMA, interrupt
Interrupt
DMA
DMA, interrupt
Interrupt
DMA
DMA, interrupt
NA
NA
NA
Sep. priced
None
MASCOT (hostresident diagnostic system)
OS/32MT,
ITAM
250
24 to 48
2 to 8
Included
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usee.
Main memory word size, bits
Main memory storage capacity, words or bytes
Yes
1
2
-
-
-
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
-
Communications operating software
Additional software supported
Incl. in price
Sep. priced
-
-
-
-
Turnkey Systems
Yes
Available
Available
Available
No
$6,000 to
$100,000
$50,000 to
$500,000
$15,000 to
$1.5M
$2,000 to
$25,000
-
-
$28,000 to
$130,000
$600 to $6,000
Interrupt,
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint., range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
-
-
Sep. priced
-
$7,500
$7,500
$7,500
-
-
-
-
-
-
1970
50
Telex
July 1975
NA
Interdata
July 1974
NA
Interdata
Spring 1976
NA
Interdata
NA
NA
Memorex
Supports RJE
applications &
Interdata processor-to-processor communications
See 8/32
See 8/32
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J, 08075
REPRODUCTION PROHIBITED
AUGUST 1977
C13-010-117
Processors
Communications Processors-Basic Characteristics
IBM 360122-
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
195,370/135
Any RS-232
interface
Any RS-232
interface
and up
NETWORK ARRANGEMENTS SUPPORTED
As a front -end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations po"able on one line
No
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations po"able on one line
As a free-standing communications processor
Network Architecture compliance
Fu"-capability data base system
Operating system
-
-
No
-
-
Communications line capacity
No. of half-duplex lines physically attachable to
.processor if a" are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if a" lines are fu"-duplex
(
Yes
1
8 (4 at a time)
32
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC(UDLC, BDLC)
IBM SDLC
Other
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
COMMENTS
AUGUST 1977
No
Yes
4
4
Device dependent
Yes
4
4
Device dependent
Yes
-
-
-
Yes
30
1
Any number
Yes
8
1
Any number
Yes
As required
Yes
As required
Yes
64
1
Device dependent
Yes
-
-
-
-
MAXCOM,
MAX "/3
Future
MAXCOM,
MAX "/3
48
12-36
2-6
256
100-256
12-48
-
-
-
-
NA
Capacity halved
Capacity
Yes
Yes
Planned
Planned
Yes
Yes
Optional
Optional
Custom
Yes
Yes
Optional
Optional
Custom
Yes
Yes
Future
Future
CDC UT-200
Yes
Yes
Future
Future
CDC UT-200,
3270,3780,
Univac 1004
Yes
Yes
0.54
16
64K-512K
bytes
Yes
Yes
0.5
8
65K bytes
Yes
Yes
0.5
65K bytes
No
No
0.6
16
48K bytes
Limited
No
0.8-1.0
16
128K bytes
DMA, interrupt
DMA
NA
DMA, interrupt
Custom
Custom
DMA. interrupt
Custom
Custom
Interrupt
DMA
DMA
DMA
DMA
DMA
halv~d
8
Capacity halved' None
Sep. priced
Sep. priced
Incl. in price
-
-
-
Incl. in price
Macro assembier, FORTRAN,
utilities
No
Yes
Yes
No
No
$40,000 to
$280,000
$1,120 to
$8,000
$2,000 to
$6,000
$1,000 to
$3,000
$6,000 to
$50,000
$30,000 up
-
-
-
-
-
Typically $101<
Typica~y
-
-
-
-
NA
60
Memorex
4th Q 1975
120
MICOM
2nd Q 1977
60
Custom software extensions are avai lable, for a fee,
from Memorex
Systems Engineering Services
Designed for
concentrator
and message
switch appIications for up to
30 channels
Designed to be
terminal controller and
eight-channel
concentrator
Turnkey Systems
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
IBM 360/370;
CDC 30001
6000, CYBER;
custom
Up to 8
4 to 6
Incl. in price
MASCOT and
other hostresident utilities
Monthly rental (2-yr. lease, including maint., range)
No
-
IBM 360/370;
CDC 30001
6000, CYBER;
custom
Up to 30
4 to 6
Communications operating software
Additional software supported
PRICING AND AVAILABILITY
Purchase price (system range)
-
Modular Computer Systems
Modcomp
II/CP2
112t0216
64
40
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
No
-
Modular
Computer
Systems
Modcomp 11/2
MICOM
Systems Inc.
MICOM
20 Series
MICOM
Systems Inc.
MICOM
40 Series
MEMOREX
1380
MANUFACTURER AND MODEL
$10K
MICOM
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
-
Sept. 1976
Over 10
Modular Computer Systems
Dedicated, programmable
CPU for communications
applications
_.
March 1973
Over 100
Modular Computer Systems
C13-010-118
Processors
Communications Processors-Basic Characteristics
MANUFACTURER AND MODEl
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC (UDLC, BDLC)
IBM SDLC
Other
Modular ComputerSystems
Modcomp
IVICP
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
NCR
621
754
IBM 3601370,
Univac
Custom
No
Yes
64
64
32
Yes
Appl. dependent
Appl. dependent
Appl. dependent
Yes
64
64
32
Yes
Appl. dependent
Appl. dependent
Appl. dependent
-
Yes
Norfield
Norfield
Norfield
Yes
Philips
Philips
Philips
254
160
Device dependent
Capacity halved
29
6
1
128
64
32
Appl. dependent
Appl. dependent
Appl. dependent
None
Capacity halved
Halved for
voice, wide band
Yes
Yes
Future
Future
Yes
Yes
No
No
Yes
Yes
No
No
Yes
RPQ
RPQ
RPQ
No
No
Yes
No
1.2
16
32K words
No
No
0.96
16
128K bytes
Yes
Yes
2.0
36
1 M byte
DMA, interrupt
DMA, interrupt
Interrupt
Interrupt
DMA, interrupt
DMA, interrupt
DMA, interrupt
NCR Century
and Criterion
Series
Yes
4
4
Device depen·
dent
Yes
4
4
Device depen·
dent
Yes
Partial
1
2
Device dependent
No
-
Future
MAX IV
256
100-256
12-48
None
Limited
No
0.6
16
1 M byte
DMA
DMA
DMA
North
American
Philips
OS 714170
Norfield
Electronics Inc.
DCS 400
NCR Century
and Criterion
Series
IBM 360/370;
CDC 30001
6000, CYBER;
custom
Yes
Yes
Future
Future
CDC UT-2oo,
3270,3280,
Univac 1004
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capaCity, words or bytes
NCR
-
No
-
-
-
-
-
Interrupt
-
-
Yes
29
29
Terminal
dependent
No
-
-
-
-
-
-
Incl. in price
-
-
Incl. in price
Special utilities
No
Available
Available
Yes
Yes
$48,500 up
$1,200 and up
$16,500 and up
$35,000 to
$100,000
Contact vendor
Monthly rental (2-yr. lease, including maint., range)
-
$200 and up
$611 (1 yr.)
-
Contact vendor
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
-
-
November 1973
NA
NCR
March 1975
30
Norfield
Electronics
1967
80
North American
Philips
Communications operating software
Additional software supported
Incl. in price
Macro assembier, FORTRAN,
utilities
Turnkey Systems
PRICING AND AVAILABILITY
Purchase price (system range)
COMMENTS
December 1975
Over 50
Modular Computer Systems
32 bit internal
bus and 4 port
memory is
standard
Sep. priced
$60 and up
1969
NA
NCR
Incl. in price
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1977
C13-010-119
Processors
Communications Processors-Basic Characteristics
(
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations poll able on one line
North
American
Philips
DS 7
North
American
Philips
DS 714/81
MANUFACTURER AND MODEL
Custom
Custom
Yes
Appl. dependent
Appl. dependent
Appl. dependent
Yes
Appl. dependent
Appl. dependent
Appl. dependent
Omnus
Computer
Corporation
Omnus-1/CU
Univac 1100
series, 494;
others ava ilable
IBM 360/370
IBM, NCR,
Burroughs,
Honeywell
Yes
To other PIX-II
10
1
26 (interrupt)
Yes
4
No
Yes
Variable
8
50
8
16
256
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations poll able on one line
Yes
Appl. dependent
Appl. dependent
Appl. dependent
Yes
Appl. dependent
Appl. dependent
Appl. dependent
Yes
192
192
256
As a free-standing communications processor
Yes
Philips
Philips
DACOS
Yes
Philips
Philips
Philips
Yes
Available
Available
ECES
Appl. dependent
Appl. dependent
Appl. dependent
Appl. dependent
Appl. dependent
App!. dependent
120 (per CPU)
20-80 (per CPU)
40 (per CPU)
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLe)
IBM SDLC
Other
Yes
RPQ
RPQ
RPQ
-
No
-
-
8
50
Yes
No
No
PERI-COMM
20
3 (full-duplex)
45
10-45
Special Quote
Capacity halved
Capacity halved
Yes
Yes
Yes
Available
All Univac,
IBM 2741, 2780
No
No
No
No
Paradyne Version SDLC
Yes
Yes
Yes
Yes
Audio response
(93 line max.)
None
Halved for
Halved for
voice, wide band voice, wide band
Yes
RPQ
RPQ
RPQ
Peri phonics
Corporation
T-COMM 7
Paradyne
PIX-II
-
-
Yes
Yes
0.7
36
3M byte
Yes
Yes
1.0
16
32K bytes
Yes
Yes
0.8
16 or 20
1M byte
Yes
No
0.5
16
32K words
No
No
0.8
16
2M bytes
Data 'transfer between memory and:
Communications lines
Mass storage
Other peripherals
DMA interrupt
DMA interrupt
DMA interrupt
DMA interrupt
DMA, interrupt
DMA interrupt
DMA, interrupt
DMA
DMA, interrupt
-
DMA, interrupt
DMA interrupt
DMA interrupt
DMA, interrupt
Communications operating software
Additional software supported
Incl. in price
Special utilities
Incl. in price
Special utilities
Inc!. in price
TIP, message
switch, store &
forward
Turnkey Systems
Yes
Yes
Yes
Yes
Yes
Contact vendor
Contact vendor
$50,000 to
$75,000
$2,200
$80,000 and up
-
-
-
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
Interrupt
Incl. in price
-
Monthly rental (2-yr. lease, including maint., range)
Contact vendor
Contact vendor
$125,000 to
$950,000
$3,500 up
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
-
1976
2
North American
Philips
1974
35
North American
Philips
August 1974
7
Omnus
April 1976
80
Paradyne
COMMENTS
(
AUGUST 1977
Line capacities
shown are for
simultaneously
active lines per
CPU (8 CPU's
max.). OmnusllCU is a replacement for
Univac CISP,
DCP, and CTMC
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
Incl. in price
Data collection,
(BANK-FROMHOME)
1971
Over 200
Peri phonics
C13-010-120
Processors
Communications Processors-Basic Characteristics
Peri phonics
Corporation
DTC
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
IBM. NCR.
Burroughs,
- Honeywell
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
No
-
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
Yes
Variable
2
25
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
-
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
No
-
-
Sperry Univac
Distributed
Communications Processor
(DCP)
Tandem
Computers
Inc.
T161240
Telefile
Computer
Products. Inc.
FECP-I
Tandem
Computers Inc.
T16/212.
243.244
Univac Series
1100, Series 90
IBM, Xerox
Sigma, Burroughs
IBM, Xerox
Sigma, Burroughs
IBM 360/370
Yes
2
2
AT&T dependent
Yes
No limit
No limit
AT&T dependent
Yes
DCA
TELCON (TOT.)
TELCON
Yes
32
32
256
Yes
1024
1024
256
Yes
1
2
Host dependent
Yes
32
32
Yes
1024
1024
Yes
Software depen.
Software depen.
Software depen.
Yes
-
-
-
-
ENSCRIBE
GUARDIAN
ENSCRIBE
GUARDIAN
Yes
No
No
TCOS
Yes
20
5-20
-
256
96
32
256
256
256
2048
2048
2048
128
48
32
Halved
Capacity halved
Capacity halved
Capacity halved
Normally none
Yes
Yes
Yes
Yes
Audio Response
(20 line max.)
Yes
Yes
Yes
Yes
REM-l, Uniscope NTR
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
Yes
Yes
-
-
No
No
0.9
16
56K words
Yes
No
0.92
16
128K bytes
Yes
No
0.5
16
160K words
Yes
No
0.8/0.5
16
224K1256K
words
Yes
No
0.6 to 1.0
16
1M words
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA. interrupt
DMA, interrupt
DMA
DMA
DMA
DMA
DMA
DMA
DMA. interrupt
DMA
DMA, interrupt
Communications operating software
Additional software supported
Incl. in price
-
Incl. in price
TAL, COBOL,
sort, ed itor,
entry
Incl. in price
TAL, COBOL,
sort, editor,
entry
Normally incl.
FORTRAN,
sort/merge, etc.
Turnkey Systems
Yes
Incl. in price
NETGEN-DCP,
host-cross
assembler,
loader, sysgen
Optional
No
No
Yes
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCP/HDLC (UDLC, BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
PRICING AND AVAILABILITY
Purchase price (system range)
$50,000 and up
Monthly rental (2-yr. lease, including maint., range)
-
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
COMMENTS
-
Fall 1977
-
Periphonics
-
$40,668 to
$200,000
$1,204 to
$5,705
Contact vendor
Contact vendor
$48,000 and up
-
-
$1,775 and up
-
-
-
-
-
April 1977
5
Tandem
May 1976
30
Tandem
1971
NA
Telefile
October 1977
NA
Sperry Univac,
Customer Engrg.
Communications line capacity is dependent on line
mix
-
All Tandem
processors have
multiprocessor
architecture for
for fault-tolerant
operation
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N_J.08075
REPRODUCTION PROHIBITED
~'.
AUGUST 1977
C13-010-121
Processors
Communications Processors-Basic Characteristics
Telefile
Computer
Products. Inc.
FECP-X
MANUFACTURER AND MODEL
Texas
Instruments
DXS
TELENET
TP 2000
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
Xerox Sigma
5-9
Virtually all
manufacturers
Virtually all
manufacturers
Other network
DXS's, and IBM
370X front-ends
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no. of hosts attachable to front-end
Maximum no. of stations pollable on one line
Yes
1
2
256
Yes
3
3
Yes
32
32
-
-
Yes
4
4
16
Yes
Soft. dependent
Soft. dependent
Soft. dependent
Yes
3
3
-
-
-
Yes
No
No
TCOS
Yes
Yes
-
-
-
-
As a remote concentrator
Maximum no. of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity. if all lines are full-duplex
(
TELENET
TP 1000
Terminal protocols supported:
ASCII. Async. (Teletype)
IBM BSC
ADCCP/HDLC(UDLC. BDLC)
IBM SDLC
Other
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
No
-
-
Yes
4
1
16
Texas
Instruments
700 TPS
-
No
-
No
-
-
Yes
Future (SN2)
TINDX
DXS
Yes
4
4
4
-
PAM/D
128
48
32
-
36
36
-
-
60
44
16
Normally none
None
None
None
-
Yes
Yes
Yes
Yes
Yes
No
No
No
-
-
Yes
No
Yes
No
X.25
No
Yes
No
Future
DXS Protocol.
2260
No
No
No
No
T.I. 742
Yes
No
0.6 to 1.0
16
1M words
Yes
No
0.4
9
8K bytes
Yes
No
0.4
9
64K bytes
Yes
Option
0.75
16
128K bytes
Yes
Option
0.75
16
48K bytes
DMA. interrupt
DMA
DMA. interrupt
DMA, interrupt
--
DMA, interrupt
DMA
DMA, interrupt
DMA. interrupt
DMA
DMA interrupt
Incl. in price
COBOL, Transaction language, assembler
Yes
Incl. in price
Available
Yes
Communications operating software
Additional software supported
Normally incl.
FORTRAN,
sort/merge,
etc.
Turnkey Systems
4
DMA, interrupt
-
DMA, interrupt
DMA. interrupt
Incl. in price
Incl. in price
-
-
Yes
-
-
$60,000 and up
$6,000
$32,300 and up
$28.425
Monthly rental (2-yr. lease, including maint., range)
$2,630 and up
$200
$23,000 to
$35,000
$770 to $1,170
Contact vendor
$755
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
-
-
-
-
-
PRICING AND AVAILABILITY
Purchase price (system range)
COMMENTS
AUGUST 1977
1976
NA
Telefile
Sept. 1977
-
Telenet
Compatible with
Telenet network
-
-
1972
420
Telenet
Texas Instruments
Compatible with Distributed
Telenet netsystem with
work
multiple 960B
processors,
914A CRT's,
and 4M bytes
mass storage
Sept. 1977
-
©1977 DATAPRO RESEARCH CORPORATION. DELRAN. N.J. 08075
REPRODUCTION PROHIBITED
-
1976
NA
Texas Instruments
Discounts are
available
C13-01Q-122
Processors
Communications Processors-Basic Characteristics
-
COMPUTER SYSTEMS INTERFACED
Manufacturers and Models
NETWORK ARRANGEMENTS SUPPORTED
As a front-end
Maximum no. of direct connections to one host
Maximum no ..of hosts attachable to front-end
Maximum no. of'stations pollable on one line
As a remote concentrator
Maximum no, of remote connections to one host
Maximum no. of hosts served by one concentrator
Maximum no. of stations pollable on one line
As a free-standing communications processor
Network Architecture compliance
Full-capability data base system
Operating system
Communications line capacity
No. of half-duplex lines physically attachable to
processor if all are operated at the listed speeds:
Up to 1800 bps
2000 to 9600 bps
Over 9600 bps
Effect on line capacity, if all lines are full-duplex
Terminal protocols supported:
ASCII, Async. (Teletype)
IBM BSC
ADCCPIHDLC (UDLC, BDLC)
IBM SDLC
Other
No
-
No
-
No
-
No
-
Univac 1100,
490 Series, 48
No
Yes
256
1
Unlimited
-
No
-
-
-
-
-
Yes
Planned
Yes
Planned
PRONTO/TOT.
VORTEX III
VTAM
Yes
Planned
PRONTOITOT.
VORTEX III
VTAM
12
12
-
VORTEX/VTAM
-
Western Union
Information
Systems
C2100
Varian
V77-600
Varian
V77-400
Varian
V77-200
MANUFACTURER AND MODEL
Yes
280
1
Unlimited
No
-
Westinghouse
Canada ltd.,
Electronic Sys.
W-1655-1CC
-
No
-
Yes
8 (+8 back-up)
4
Response
dependent
No
-
-
12
12
16
16
Future
-
1
1
1
-
-
536
270
64
None
None
None
None
Capacity halved
over 4800 bps
Yes
Yes
Planned
Planned
Yes
Yes
Planned
Planned
Yes
Yes
Planned
Planned
Yes
No
Yes
Yes
Yes
Yes
Yes
Future
RESERVEC II,
SITA/024C1024
Yes
No
0.5
8
8K bytes (per
processor)
-
-
-
-
Yes
No
0.660
16
32K words
Yes
Yes
0.660
16
1M words
Yes
Yes
0.660
16
1M words
Partial
No
0.9
18
16K words
DMA, interrupt
DMA
DMA. interrupt
DMA. interrupt
DMA
DMA. interrupt
DMA, interrupt
DMA
DMA. interrupt
-
Communications operating software
Additional software supported
Sep. priced
FORTRAN,
RPG-II
Sep, priced
COBOL, FORTRAN, RPG-II
Sep. priced
COBOL, FORTRAN, RPG-II
-
Incl. in price
To cust. require,
To customer requirement
Turnkey Systems
No
No
No
Available
Yes
$35,000 to
$60,000
$45,000 to
$150,000
$55,000 to
$300,000
$88,300 to
$250,000
$15,000 to
$20,000
PROCESSOR CHARACTERISTICS
Microprogrammable by manufacturer
Microprogrammable by user
Main memory cycle time, usec.
Main memory word size, bits
Main memory storage capacity, words or bytes
Data transfer between memory and:
Communications lines
Mass storage
Other peripherals
PRICING AND AVAILABILITY
Purchase price (system range)
Monthly rental (2-yr. lease, including maint, range)
Communications operating software-one-time charge
Communications operating software-monthly charge
Date of first delivery
Number installed to date
Serviced by
COMMENTS
$3,500
-
December 1976
NA
Varian
System will
emulate popular remote batch
terminals such
as IBM HASP,
CDC 200 UT,
and Univac
1004
-
$14,500
-
December 1976
NA
Varian
-
DMA. interrupt
-
Interrupt
-
Interrupt
-
-
-
-
-
Contact vendor
December 1976
NA
Varian
October 1973
Sept. 1976
80
User or third
party
Unit is modular,
uses 3 microprocessors, and
is the basis of
custom designed
special systems
$14,500
-
Univac
PRONTO operates either as a
stand-alone transaction system or
as a distributed data processingl
transaction system, emulating IBM
3270 protocol to an IBM 370
©1977 DATAPRO RESEARCH CORPORATION, DELRAN, N.J, 08075
REPRODUCTION PROHIBITED
Remote line
adapter, RLA
2100, multiplexes up to 20
lines
-
AUGUST 1977
C'.
C13-010-101
Processors
Communications Processors - Basic Characteristics
and Equipment Specifications
The prospective buyer of a communications processor
can learn a good deal about the various suppliers of this
equipment and the specifications and prices of their
wares by scanning the following pages of comparison
charts. These charts present the principal characteristics
of today's commercially available cormmmications
proc(:ssors.
The information in the charts was supplied and/or verified
by the vendors during the months of November 1975
through January 1976. Their cooperation is acknowledged
and greatly appreciated. The omission of the products of
any specific company from the charts means that the
company either failed to respond to our repeated
information requests, was unknown to us, or has
discontinued its communications processor product line.
Subject matter for the charts includes processors with
such uses as front-end processing, message switching,
data collection, line concentration, etc. Processors used
strictly as controllers in remote batch terminals are not
included, because these products are generally limited to
one type of line or terminal and are covered in the
appropriate sections of this service. Minicomputers and
their suppliers are only included when the manufacturer
.offers an integrated communications product, rather
than a bare minicomputer, for sale to end users.
With two exceptions, hard-wired communications
controllers are not covered in these charts on
programmable communications processors. The two
exceptions are the IBM 270X hard-wired controllers and
their Memorex equivalents. It seems only fitting that
these products be included for comparative purposes,
since they triggered much of the interest in
communications processors by the average EDP user.
A discussion of the basic characteristics of
communications processors and a presentation of
the specifications of 84 processors from 37
vendors.
For a perspective, including the basic justifications
for communications processors; a detailed look at
front-end processors; and a presentation of users'
ratings and usage patterns, see Report
C09-013-101 behind the Management/System
Guides tab in this volume.
other cases the host computer's communications software must be completely replaced. Where alterations to
or replacement of the existing software is required, the
entries specify whether or not the vendor provides the
alterations or replacement software. If he does not, it is
the user's responsibility to furnish the software. In some
cases, the vendor provides both alterations and replacement software for his product, depending on the user's
application.
In some cases, entries show that the existing mainframe
software is "used as is" and also "altered" and/or
"replaced." This seeming anomaly results from vendor
support of multiple applications. It also occurs when the
vendor expands the main-frame maker's software to
support enhancements provided by the vendor's
The chart entries and their significance to prospective
users of programmable communications processors are
explained in the following paragraphs.
Computer system interface. Those programmable com·
munications processors that provide specific hardware
interfaces to central main· frame computer systems are
generally used primarily as front·end processors. This
entry lists the interfaces available, if any. If none is
available, the processor is probably used as the heart of a
message switching or data collection system, as will be
specified later on in the entry called Supported Applica·
tions. The computer system interface generally enables
the front-end processor to connect directly to an I/O
channel of the central computer system, appearing as a
standard I/O device controller to the channel.
(
Host computer communications software. This entry
defines the communications processor's compatibility
with the host computer's existing communications software. In some cases, the existing software must be
altered to accomnlodate the vendor's product, while in
AUGUST 1976
© 1976 DATAPRO RESEARCH
Com ten is one of the leading independent vendors of
communications processors. Founded in 1967, the company was
a pioneer in unloading communications [unctions from the host
computer mainframe long before IBM blessed the concept with
the introduction of the 3705. The Comten 3650 above can be
configured to emulate 270X or 370X equipment or as a
free-standing
communications
processor
for
remote
concentration, message switching, networking, etc.
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
t>
C13-01 G-1 02
Pf"0CCIIII0I"S
Communications Processors - Basic Characteristics
In separate entries are listed the maximum number of
narrow-band, voice-band, and broad-band lines that can
be connected. These figures are at best meant to serve as
general guidelines, since a specifically tailored processor
system may be able to handle considerably fewer lines
than the listed maximums (depending, for example, on
the relative activities of the three types of lines and also
on the amount of processor time dedicated to pre- or
post-processing of the data being transmitted).
Because full-duplex operation requires twice the number
of data paths, some systems accommodate only half the
number of lines when full-duplex operation is introduced. Other systems are not affected and accommodate
the same number of lines for either half- or full-duplex
operation.
Until March 1972, communications functions in IBM computer
systems were handled by the hard-wired 270X series controllers,
which placed the communications processing burden squarely
upon the central processor. Then IBM announced the 3705
Communications Controller (above), a minicomputer-based
front-end processor that can handle up to 352 lines. In
November 1975, IBM introduced an enhanced venion, the
3705-II, that features significant improvements in performance
and reductions in cost. Because of problems in the development
of the sophisticated Network Control Program software for the
3705, most installations are currently using the unit strictly to
emulate the earlier 270X controllers and thereby missing many
of the promised benefits of fron t-end processing.
t> product. The complete account on compatibility with
mainframe software is a critical factor in the procurement of a communications processor. A clear understanding between the user and the vendor must be
established prior to signing the contract to avoid unpleasant surprises on both sides during installation. The
difference between the meanings of the terms "plug
compatible" and "functionally compatible," for
example, becomes exceedingly important in considering
who has to do what.
Supported applications. This entry lists the key application areas for which each programmable processor has
been designed. If a given processor is listed as serving one
particular application area, such as message switching, it
is likely that it can be adapted to other uses with the
addition of some hardware interfaceunitsand specialized
software packages. Specific entries are included to
pinpoint the devices capable of directly replacing IBM
270X controllers or 3705 processors with or without
NCP.
Communications lines configuration. This entry summarizes the communications line handling capacity of
each processor. The total number of half-duplex lines
.that can be directly connected is listed, together with
the total number of lines that can be simultaneously
active (i.e., transmitting data). The latter number may be
less than the maximum number of lines that can be
connected.
Processor and memory. This entry includes the basic
performance specifications of the programmable
processor and its main memory unit. The length of the
processor's basic unit of data (Le., its word size) is
expressed in number of bits. Generally, the larger the
word size, the more efficient the transfer of data
between the processor and the central computer system.
Main memory cycle times are presented to give some
indications of the raw data handling speeds of these
processors. Main memory capacity, expressed in range of
sizes, can directly affect overall performance; the larger
the main memory, the more and larger data buffers can ~\
be allocated, and the more software processing routines
can be resident and instantly accessible in main memory.
1
The number of priority interrupt levels is listed to
indicate how the hardware can assist in line control
operations. Ideally, if there were a separate interrupt
level for each line, upon receipt of a line-generated
interrupt the processor would automatically know the
source of that interrupt. Since the ideal situation rarely
prevails, the processor must engage in some software
testing in order to identify the sources of specific
interrupts. Special hardware techniques, such as the use
of a microprocessor like Data General's DCU 50 in its
Nova and Eclipse series processors, are key details that
should be carefully investigated.
The entry also lists the various types of on-line
peripheral devices, if any, that can be directly connected
to the programmable communications processor. By far
the most important of such devices are the auxiliary
storage units, i.e., the on-line disks, drums, and magnetic
tape units. The disk or drum units can be especially
valuable in message buffering, batching, and queuing
operations. They can also store less frequently used
processing routines. Magnetic tape units can be useful in
logging messages on a journal basis or in recording
sta tistics.
..(.
The other on-line peripheral devices, such as punched
""..,
card units, paper tape units, and line printers, generally
play a less direct role in the communications-oriented
functions of these processors. However, they are of t>
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1976
C13-010-103
Processors
Communications Processors - Basic Characteristics
1:> direct value in enabling the processor to perform as an
independent data processing system when it is either
operating in a multi-function environment or is off-line
from its primary data communications control activities.
These devices can also be valuable in testing and
debugging the processor's software control programs.
The charts also list whether or not the processors include
console performance monitors. These devices may be
only a panel of lights and switches, CRT display units,
simple Teletype teleprinters, or highly specialized units.
But in any case, depending on how comprehensive the
software programs that support them are, they can
provide the system operator with immediate access to
the status of all lines and can permit him to change this
status, for example, from idle to enabled, as necessary.
Some devices can also provide statistics on the
performance of the network, indicating the amount of
time lines are idle, the numbers of retransmissions, the
amount of time spent processing interrupts, etc. In any
event, these devices can be especially useful in helping to
diagnose system failures, since the operator can quickly
determine the operational status of all connected lines.
Software. This entry shows what levels of software are
provided with the processor, in addition to the specific
supported applications discussed above, and also whether
the software is supplied along with the hardware
("standard") or is priced separately ("optional"). If the
processor is equipped with a software operating system
to control all its operations, the charts so indicate.
Likewise, if the software proVided includes message
control programs to automatically format, route, and
queue messages, the charts so indicate. If message
control routines are not provided, then the buyer must
realize that he must provide for such routines either
through use of his in-house programmers or through an
independent software supplier. The vendor of the programmable processor may also offer to write such
software, but obviously for an additional price.
The "Turnkey systems" entry informs potential users
whether or not the vendor is willing to undertake to
provide complete systems, including all applications software.
Pricing and availability. The charts list the purchase and
monthly rental prices for each processor, except where
the suppliers declined to provide such information. In
many cases, price ranges are listed, indicating that actual
prices in specific situations will be determined by such
items as number and type of lines controlled, amount of
main memory selected, number and type of on-line
peripheral devices selected, and number and extent of
software functions desired. As mentioned earlier, it can
be extremely dangerous to casually compare the prices
of two apparently similar programmable processors
without knowing precisely what is included. The charts
can at best serve as rough guidelines on the relative
pricing of these processors.
The suppliers of these processors were asked to provide
two other significant items of information: date of first
delivery (actual or expected) and number of processors
installed to date. (In most cases, they provided this
information; those that declined are clearly indicated.)
This information can be valuable in differentiating those
products that have been installed for a substantial period 1:>
The software entries also list the specific terminal
handling routines, or handlers, that are offered as part of
the standard processor package. Other handlers can
often be easily provided, but on a special-order basis.
The user may choose to write his own terminal handlers
if none exists for this specific terminals, or he may
commission the supplier of his "foreign" terminal to
prepare appropriate handlers as part of the terminal
system support package. (These entries refer to the
popular Teletype terminals by the abbreviation "TTY.")
The entries also list whether or not the processor comes
equipped with an assembler so that the user can write
and modify control and processing routines as required
during the installation lifetime of the processor. In some
cases, the vendor provides two versions of the assembler:
one that functions on the communications processor
itself, and another that functions on the host or central
computer (cross assembler) for greater speed in
assembling the program.
AUGUST 1976
© 1976 DATAPRO RESEARCH
The Modular Computer (Modcomp) II and IV (shown above)
minicomputer systems are available with .an additional set of
macro instructions implemented in control storage specifically
for communications functions. With the special control memory,
the models are designated II/CP and IV/CP. In addition,
Modcomp has developed MAXNET software for support of
multiple Modcomp systems network. Several other
minicomputer vendors are noted for special efforts in
communications processors; such vendors include Data General,
Digital Equipment, Hewlett-Packard, InterdtJta, Systems
Engineering Laboratories, Texas Instruments, and Varian.
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
C13'()10-104
Processors
Communications Processors - Basic Characteristics
~
of time and in a number of installations from those that
are essentially untried to date. In those cases where the
systems have been installed and running for some period
of time, the buyer should check with the supplier as to
whether or not the installed systems are functioning in
the same application areas as those he has planned. If
they are performing radically different functions, the
"proven performance" assertion loses some Significance.
Comments. At the bottom of the charts are listed any
unusual features or characteristics of the programmable
communications processors which are not reflected in
the standard entries
Suppliers of Communications Processors
Listed below for your convenience in obtaining
additional information are the full names and addresses
of the 37 suppliers whose 84 products are summarized in
the following comparison charts.
GSC Data Systems, Inc. (formerly Wells TP Sciences, Inc.), 99
West Sheffield· Avenue, Englewood, New Jersey 07631.
Telephone (201) 569-7711.
GTE Information Systems, Inc., 5300 E. La Palma Avenue,
Anaheim, California 92807. Telephone (714) 524-4431.
Harris Corp., Data Communications DMsion, 1.1262 Indian
Trail, P.O. Box 44076, Dallas, Texas 75234. Telephone (214)
620-4400.
Hewlett·Packard Company, 1501 Page Mill Road, Palo Alto,
California, 94304. Telephone (415) 493-1501.
Honeywell Information Systems, Inc., 200 Smith Street,
Waltham, Massachusetts 02154. Telephone (617) 890-8400.
IBM Corporation, Data Processing Division, 1133 Westchester
Avenue, White Plains, New York 10604. Telephone (914)
696·1900.
Intercomputer Corporation, 2201 East University
Phoenix, Arizona 85034. Telephone (601) 267-7545.
Drive,
Action Communications Systems, Inc., 10300 N. Central
Expressway, Dallas, Texas 75231. Telephone (214) 750-3000.
Interdata, Inc., 2 .Crescent Place; Oceanport, New Jersey 07757.
Telephone (201) 229-4040.
American Systems Incorporated, 123 Water Street, Watertown,
Massachusetts 02172. Telephone (617) 923-1850.
Memorex Corporation, San Tomas at Central Expressway, Santa
Clara, California 95052. Telephone (408) 987·1000.
Burroughs Corporation, Second Avenue at Burroughs, Detroit,
Michigan 48232. Telephone (313) 972-7000.
Moduwr Computer Systems, 1650 W. McNab Road, Fort
Lauderdale, Florida 33309. Telephone (305) 974-1380.
Chi Corporation, 11000 Cedar Avenue, Cleveland, Ohio 44106.
Telephone (216) 229-6400.
Norfield b1ectronics, Inc., 3 Depot Place, East Norwalk,
Connecticut 06855. Telephone (203) 853-2717.
Collins Radio Group, Rockwell International, Dallas, Texas
75207. Telephone (214) 690-5000.
North American Philips Communications Corp., 91 McKee
Drive, Mahwah, New Jersey 07430. Telephone (201) 529-3800.
Computer Automation Inc., 18651 Von Karman Avenue, irvine,
California 92664. Telephone (714) 833-8830.
Omnus Computer Corporation, 1538 E. Chestnut Street, Suite
E. Santa Ana, California 92701. Telephone (714)547-8444.
Computer Communications, Inc., 2610 Columbia Street,
Torrance, California 90503. Telephone (213) 320-9101.
Periphonics Corporation, 75 Orville Drive, Bohemia, New York
11716. Telephone (516)567·1000.
Computer Transmission Corporation (Tran), 2352 Utah Avenue,
E1 Segundo, California 90245. Telephone (213) 973-2222.
RCA Global Communications, Inc., 60 Broad Street, New York,
New York 10004. Telephone (212) 363-2121.
Comten, 1950 W. County Road B-2, St. Paul, Minnesota 55113.
Telephone (612) 633-8130.
Systems EnKineerinK Laboratories, Inc. (SEL), 6901 W. Sunrise
Blvd., Ft. Lauderdale, Florida 33313. Telephone (305)
587-2900.
Control Data Corporation, Box 0, Minneapolis, Minnesota
55440. Telephone (612) 853-8100.
Data General Corporation, Southboro, Massachusetts 01772.
Telephone (617) 485-9100.
Data Pathing Inc., 370 San Aleso Avenue, Sunnyvale California
94086. Telephone (408) 734"0100.
Telefile Computer Products Incorporated, 17131 Daimier St.,
Irvine, California 92705. Telephone (714) 55 7-6660.
Telex Corporation, Box 1526, Tulsa, Oklahoma 74101.
Telephone (918) 627-1111.
Texas Instruments, Inc., P.O. Box 1444, Houston, Texas 17001.
Telephone (713) 494·5115.
Digital Communications Associates, Inc., 135 Technology
Park/Atlanta, Narcross, Georgia 30074. Telephone (404)
448-1400.
UNIVAC (division of Sperry Rand Corporation), P.O. Box 500,
Blue Bell, Pennsylvania 19422. Telephone (215) 542-4011.
Digital Computer Controls Inc., 12 Industrial Road, .Fairfield,
New Jersey 07006. Telephone (201) 227-4861.
Varian Data Machines, 2722 Michelson Drive, Irvine, California
92806. Telephone (714) 833-2400.
Digital Equipment Corporation. 146 Main Street, Maynard,
Massachusetts 01754. Telephone (617) 897·5111.
Western Union Information Systems, Inc., 82 McKee Drive,
Mahwah, New Jersey 07430. Telephone (201) 529-4600.0
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08076
REPRODUCTION PROHIBITED
AUGUST 1976
J
C13-010-105
Processors
Communications Processors - Equipment Specifications
(
MANUFACTURER AND MODEL
Action
Communications
Systems
Telecontroller
American
Systems
Nucleus 4000
Burroughs
B716
Burroughs
B714
Chi
Communications
Processor
(front end)
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
I BM/360, I BM/370 I BM/360, I BM/37 0, Burroughs B 4700/ Burroughs B 4700/ UNIVAC 1100
B 5700/B 6700/
Series
Burroughs B 1700, B 3700/B 2700
Data General
B 7700
Nova, custom
Host computer
comm~
software:
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Custom
RJE; time-sharing
Yes
No
No
No
Yes
Yes
Distributed
communications
Yes
No
No
No
No
Yes
Secur itV; spooling
32
32
32
None
32
32
32
4
1
32
240
240
240
240
240
Reduces line by
half
Reduces line by
half
No effect
DEC PDP-11 Series Burro ughs B 774-1
Burroughs B 776-1
I nterdata 80
16
0.5
8K to 96K
16
1.0
40K to 96K
Disk cartridge,
mag. tape, card
readers, pu nches,
etc.
32
0.27
64K
4
Card reader, disk,
printer
tape, printer
16
Function of DEC
PDP-11 model used
Disk paper tape,
or any standard
peripheral
Yes
Yes
No
-
No
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Host
No
Yes
Yes
Yes
Yes (compiler)
No
Most terminals;
Burroughs terminals; Teletype;
Bisync. terminals
Burroughs term inals; Teletype;
Bisync. terminals
Yes
Yes
Yes
Yes; UNIVAC
1100
IBM 2780; U 1004;
IBM 360/20;
Teletype
$2,000 (purchase);
$50/mo. (rental)
-
Standard
Standard
-
Available
$39,800 to
$125,000
$850 to $2,900
-
$40,000 (basic)
Monthly rental
$30,000 and over;
varies by model
$3,500 to $31,000 -
-
$1,300 (basic)
Date of first delivery
Number installed to date
Serviced by
1971
75
Sorbus
January 1975
December 1975
Burroughs
August 1972
Chi and Interdata
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
-
Yes
Yes
No
No
Yes
Yes
I nqu iry/response;
data collection;
ban king; retail
cred it networ k
256
256
128
48
256
Reduces line by
half
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines 128
Narrow-band lines
128
Voice-band lines
128
Wide-band lines
128
Maximum number of lines active
128
simultaneously
Effect of full-duplex operation
Reduces lines by
half
.(
PROCESSOR AND MEMORY
Processor identity
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cro ss assemb ler
Terminal handlers
Data Gene ral
1200,800
16
1.2/0.8/0.3
128
64
Card reader, disk
mag. tape, paper
Most terminals
CRT's; async. and
Bisync.; financial
Software pricing
Standard
Standard
Turnkey systems
Available
Available
PRICING AND AVAILABILITY
Pu rchase price
COMMENTS
$100Kto$1M
1974
9
American Systems
& Digital Equipment
Supports voice response; does not
requ ire IBM tele-
com. access
methods
AUGUST 1976
© 1976 DATAPRO RESEARCH
MCPV-MCS
-
-
None
Burroughs
Microprogram
controlled
Also see Reports
700-112-01
through
700-112-13 for
spec ificati on 5 of
the numerous Burroughs Terminal
Computers
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
C13-010-106
Processors
Communications Processors - Equipment Specifications
Chi
Communications
Processor (remote
concentratorl
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
UNIVAC 1100
Series
Collins Radio
Group
C-System
Model 8562
Collins Radio
Group
C 900 Series
I BM/360, I BM/370 Custom
UNIVAC1100&
490 Series, custom
Computer
Automation
LSI-1 & LSI-2
Computer
Communications
Inc.
CC-8
Application dependent
I BM/360, I BM/370
-
Yes
No
No
No
No
Host computer comm, software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
-
-
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
No
No
No
Yes
No
-
Yes
No
No
No
Yes
Yes
Multiple mixed
host CPU inter-
No
No
No
No
Yes
Yes
Funds transfer
No
No
No
No
No
No
Software modules
permit constr. of
emulator progs.
Yes
Yes
Yes
Yes
Yes
Yes
I nte II igent network processing
Over 32
See Comments
-
processing
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identity
240
240
240
240
240
1024
1024
256
128
1024
256
256
20
10
256
-
240
240
120
64
240
No effect
-
No effect
-
No effect
Interdata 80
C-8562A-1
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
32
0.27
64K
4
Card reader, disk,
printer
Console performance monitor
No
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
Yes
Yes
Yes
Yes; UNIVAC
1100
UNIVAC U-100
and OCT 2000
DEC PDP-11 135
and PDP-11 105
32
16
0.9
0.9
262K
64K to 256K
o (queue-driven)
Multi-level
Disk, mag. tape,
Moving head disk,
card units, printers, mag. tape, printer,
others
CRT, card reader,
etc.
Yes
Yes (+Op Console)
LSI-1 & LSI-2
CCI
16
1.6
512K
256
Disk, mag. tape,
CRT, card readers,
line printer, etc.
16
1.0
8K to 512K
32
Fixed and movinghead disk; CRT
Yes
Yes
Yes
Yes
Yes
No
-
Yes
No
Yes
Yes; IBM 360/370
Yes
Yes
No
Yes
SABRE Code;
ATA; lATA;
ASCII; SDLC;
others
Standard
-
Yes
Yes
Yes
Software pricing
Standard
TTY; AT&T, WU
TTYsys.;IBM 2780
& other BSC; Univac OCT 1000,etc.
Standard
Turnkey systems
Available
Available
Available
No
Standard and
custom
Yes
$2,760 to $3,160
$46,500 (basic)
-
PRICING AND AVAILABILITY
Purchase price
All IBM; TTY
1/11; Univac;
OS 40; OS V
-
$30,000 (basic)
$500,000 to $2M
Monthly rental
$1,000 (basic)
Contact vendor
$350,000 to
$950,000
Contact vendor
Date of first delivery
Number installed to date
Serviced by
-
June 1974
March 1974
Over 20
Collins
January 1975
Over 10
Collins
September 1973
CAl
3-year & 5-year
leases
May 1975
2
CCI
System permits
multiple host
CPU's and flexible
line terminations
System supports
multi-mode
environment and
appl ication s;
Collins is now a
subsidiary of
Rockwell International
Marketed on an
OEM basis to
systems manufacturers
Competitor to
IBM 3704; see
other CCI models
on next page
COMMENTS
Ch i and I nterdata
-
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1976
\".
C13-010-107
Processors
.....ommunications Processors - Equipment Specifications
MANUFACTURER AND MODEL
Computer
Communications
Inc.
CC-80
Computer
Transmission
Corp.
M-3000
Computer
Communications
Inc.
CC-8000
COMPUTER SYSTEMS INTERFACED
I BM/360, I BM/370, I BM/360, I BM/370 , I BM/360, I BM/370 • Custom
Manufacturers and models interfaced
CDC 7600, DEC
and custom
and custom
PDP-ll, etc.
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identitY
Word length, bits
Memory cycle time, microseconds
Memory capacitY, bytes
Priority interrupt levels
On-line peripheral devices
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Comten, Inc.
Comten 476
Comten, Inc.
Comten 20
I BM/360, I BM/370,
custom
No
No
No
Yes
Yes
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
-
Yes
Yes
Yes
Yes
Yes
Yes
I nte II ige nt network processing
Yes
Yes
Yes
Yes
Yes
Yes
-
No
No
No
No
Yes
No
No
No
No
Yes
No
240
240
120
64
240
960
240
240
240
960
No effect
CCI
-
Data PABX circuit switching,
port contention
-
2048
2048
128
128
128
64
128
Yes
No
No
No
No
Yes
EFTS, combined
message switching
& front-end processing
256
256
256
128
256
No effect
No effect
No effect
No effect
CCI
-
Comten
Comten
-
16
0.9
8K to 65K
128
Disk, mag. tape,
card reader,
printer, paper
tape
No
32
0.75
32K to 512K
64 to 384
Disk, mag. tape,
Yes
Yes
Yes
Yes; IBM 360/370
16
16
0.54
0.54
8Kt0512K
8Kt0512K
32
32
Fixed/movingFixed/movinghead disks, mag.
head disks, mag.
tape, printer, cards tape, printer, cards
CRT, paper tape
CRT, paper tape
Yes
Yes
-
-
-
Yes
card reader,
printer, paper
tape
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
-
Terminal handlers
All CCI, all IBM,
TTY 33/35/37;
others custom
All CCI, all IBM,
TTY 33/35/37;
others custom
-
No
No
No
Yes; IBM 360/370;
Comten 476
None
Software pricing
Standard
Standard
-
Optional
Standard
Turnkey systems
Available
Available
-
No
Available
$74,500 (basic)
$125,000 (basic)
Configuration
dependent
$60,000 to
$120,000
$100,000 to
$350,000
3-yr. and 5-yr.
leases
March 1975
12
CCI
3-yr. and 5-yr.
leases
October 1970
6
CCI
-
-
-
1973
March 1971
Over 50
Comten
September 1975
Over 50
Comten
Emulation and
network program
multiprocessor
Message switch
multiprocessor
Supports all std.
interfaces: EI A
RS-232, CCITT
V.24, MIL Std.,
CCITT V.35, etc.
Used as remote
476 is successor
to Comten 40/45
and 60/65, first
delivered in Ju ne
1969
PRICING AND AVAILABILITY
Purchase price
Monthly rental
Date of first delivery
Number installed to date
Serviced by
COMMENTS
AUGUST 1976
© 1976 DATAPRO RESEARCH
-
TRAN
concentrator in
large networks
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
TTY 28/33/35/37,
all IBM, SDLC,
others
C13-010-108
Processors
Communications Processors - Equipment Specifications
Comten, Inc.
Comten 3650
MANUFACTURER AND MODEL
Control Data
Corp.
2550 Series
Control Data
Corp.
Cyber 1000
Comten,lnc.
Comten 3670
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
IBM/360,IBM/370, I BM/360, IBM/370, I BM/360, I BM/370 CDC 6000, Cyber
custom
custom
custom
70, Cyber 170,
3000 Series
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
Yes
No
No
No
No
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Communications
networking
Yes
Yes
No
Yes
Yes
Yes
Yes
No
No
No
Yes
Yes
Communications
-
Yes
No
No
No
No
No
6671/6676 emu lation
networking
systems (CNS)
128
128
128
64
128
384
384
384
192
384
32
32
32
32
32
No effect
No effect
Comten
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
PrioritY interrupt levels
On-line peripheral devices
16
0,65
16K to 256K
256 to 768
Console performance monitor
to
to
to
to
to
512
512
512
128
640
Data General
Nova 2
IBM/360,IBM/370,
custom
Yes
Yes
No
No
No
No
No
-
256
256
256
128
256
128/mux
128/mux
4/mux
1
All
No effect
No effect
No effect
Comten
Control Data
Control Data
-
16
0.65
16Kt0512K
256 to 768
-
16 + 2
0.65
48K to 512K
16
Moving-head disk,
line pr inter, card
reader
Yes
Yes
27
0.9
24K to 192K
4
Fix edt mov ing-head
disk, mag. tape,
card reader/punch,
line printer
Yes
Data General
Nova 2
16
1.0
8K to 64K
16
Fixed/moving-head
disk, mag. tape,
card reader, line
pr inters, diskette
Yes
Yes
Yes
No
Yes; IBM 360/370,
Comten 476
TTY 28/33/35/37,
all IBM, SDLC,
others
Yes
Yes
No
Yes; IBM 360/370,
Comten 476
TTY 28/33/35/37,
all IBM, SDLC,
others
Software pricing
Standard
Standard
Yes
Yes
Yes
Yes
No
Yes
Yes; CDC 6000,
Yes; IBM/360
Cyber 70, 170
TTY;IBM BSC tar.; TTY 28/33/35/38, TTY 33, IBM 2780
AT&T,WU TTY
CDC 200 UT, 731,
systems; TC 500,
734,711,714,
TTY 40; others
713, others
Standard, opt.
Standard
Standard
Turnkey systems
Available
Available
Available
$100,000 to
$400,000
$2,400 to $8,000
$250,000 to
$50,000 to
$1,500,000
$150,000
$5,000 to $35,000 $2,500 to $7,500
$4,550 to $75,000
Monthly rental
$50,000 to
$150,000
$1,000 to $3,000
Date of first delivery
Number installed to date
Serviced by
March 1975
Over 60
Comten
March 1972
Over 150
Comten
March 1969
58
Control Data
September 1973
20,000 (all tYpes)
Data General
PROCESSOR AND MEMORY
Processor identity
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
PRICING AND AVAILABILITY
Purchase price
Yes (CRT, TTY)
Yes
Yes
Yes
No
Optional
September 1975
15
Control Data
COMMENTS
None
Third-party lease
See Comments for
other Data General
models (next page)
© 1976 DATAPRO RESEARCH
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1976
C13-010-109
Processors
Communications Processors - Equipment Specifications
Data General
Eclipse
C/300
Data General
Eclipse
5/200
Data General
Eclipse
S/100
Data General
Eclipse
Nova 3
MANUFACTURER AND MODEL
Data Pathing Inc.
Series 2000
COMPUTER SYSTEMS INTERFACED
I BM/360, I BM/370, IBM/360,IBM/370, I BM/360, I BM/370 I BM/360, I BM/370, IBM/360,IBM/370,
Manufacturers and models interfaced
custom
custom
custom
custom
custom
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
Yes
-
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneous
Effect of full-duplex operation
(
PROCESSOR AND MEMORY
Processor identity
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
Yes
-
-
Yes
Yes
-
No
Yes
Yes
No
No
-
-
-
-
-
-
-
--
Yes
No
No
No
Yes
Yes
RJE, time-sharing
Yes
No
No
No
Yes
Yes
HASp" RJE, timesharing
Yes
No
No
No
Yes
Yes
HASP, RJE, timeshar ing
Yes
No
No
No
Yes
Yes
HASP, data base
systems (lNFOS),
RJE, time-sharing
Yes
No
No
No
Yes
No
Data collection
256/mux
256/mux
32/mux
4/mux
256/mux
256/mux
256/mux
32/mux
4/mux
256/mux
256/mux
256/mux
32/mux
256/mux
256/mux
256/mux
32/mux
4/mux
256/mux
6
0
6
0
6
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
No effect
Data General
Data General
Data General
Data General
Eclipse w/ERCC
Eclipse w/ERCC
Eclipse w/ERCC
Nova 3
16
16
16
16
0.2 to 0.8
0.2 to 0.8
0.2 to 0.8
0.7
64K to 256K
16K to 256K
32K to 256K
16K to 256K
64
64
16
64
Fixed/moving-head disk, mag. tape, line printers, cassette tape, card reader,
paper tape units, diskettes, CRTs, others
DPI 2103
4/mux
-
16
8_0
16K
16
Mag. tape
Yes
Yes
Yes
Yes
No (op. console)
Yes
Yes
Yes
Yes; IBM/370
Yes
Yes
Yes
Yes; IBM/370
Yes
Yes
Yes
Yes; IBM/370
Yes
Yes
Yes
Yes; IBM/370
Yes
Yes
Yes
No
TTY 33, CRT's,
IBM 2780/3780,
BSC, ASCII,
SDLC
Standard
TTY 33, CRT's,
IBM 2780/3780,
BSC, ASCII,
SDLC
Standard
TTY 33, CRT's,
IBM 2780/3780,
BSC, ASCII,
SDLC
Standard
DPI data collection
Software pricing
TTY 33, CRT's,
IBM 2780/3780,
BSC, ASCII,
SDLC
Standard
Turnkey systems
None
None
None
None
Available
$2,900 to $50,000
$9,200 to $75,000
$16,300 to
$100,000
$30,000 to
$250,000
$24,150
Monthly rental
3rd-pa rtY lease
-
-
-
$812 to $900
Date of first delivery
Number installed to date
Serviced by
1975
20,000 (all tYpes)
Data General
April 1975
March 1975
July 1975
-
-
-
Data General
Data General
Data General
1967
85
DPI
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
PRICING AND AVAILABILITY
Purchase price
COMMENTS
AUGUST 1976
Each mux supports up to 9600 bps per line (asynch. 256 lines/synch. 32 lines);
the DCU 50 user-programmable communications preprocessor supports
16,000 char/sec throughput each, or 4,800 char/sec per DG system
© 1976 DATAPRO
RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
Standard
Turnkey support
for data collection systems
C13-010-110
Processors
Communications Processors - Equipment Specifications
MANUFACTURER AND MODEL
Data Pathing Inc.
System
150-30
Data Pathing Inc.
System
150-60
Data Pathing Inc.
Series 2100
Digital
Communications
Associates
Smart/MUX
Digital Computer
Controls Inc.
D-116
COMPUTER SYSTEMS INTERFACED
I BM/360, I BM/370,
IBM/360, I BM/370, IBM/360,IBM/370 , IBM/360, IBM/370, DECsystem-l0,
Manufacturers and models interfaced
IBM/360,IBM/370, others
others
custom
custom
others
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
Yes
No
No
No
No
Yes
Yes
Yes
No
No
No
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
Yes
Data collection, source data management, stand-alone applications, 3270
Yes
Yes
Yes
No
Yes
Yes
Data collection,
source data
Yes
Yes
No
No
Yes
Yes
Ti me-shar i ng,
RJE
No
No
No
No
Yes
No
Data collection
emulation
management
Yes
No
No
No
No
Yes
No
No
No
No
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simu Itaneously
Effect of full-duplex operation
11
0
11
0
11
31
0
31
0
31
10
0
10
0
10
128
128
4to 6
2
All
128
128
128
128
128
No effect
No effect
No effect
No effect
Reduces lines by
half
DPI 2106 &
Intel 8080
16
1_0
32K to 256K
7
Disk, mag. tape,
printers, CRT,
others
DPI 2104
16
2_0
32K
NA
Mag. tape, disk,
CRT, printers,
drum
DEC PDP-8
Series
12
1.2
8K to 48K
NA
Disk, mag. tape,
card reader, line
printer
DCC
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
DPI 2015 &
Intel 8080
16
1.0
32K to 128K
7
Disk, mag. tape,
printers, CRT,
others
Console performance monitor
No (op. console)
No (op. console)
No (op. console)
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
DPI data collection, TTY, 3270
BSC, others
Standard
DPI data collection
Software pricing
DPI data collection, TTY, 3270
BSC, others
Standard
Standard
Yes
Yes
Yes
Yes; OEC PDP-l0,
IBM/360,IBM/370
ASCII, BSC, IBM
2741 (corres.);
SDLC planned
Standard
Turnkey systems
Available
Available
Available
Available
$105,000 to
$160,000
$2,852 to $5,251
$85,050 to
$109,410
$2,276 to $3,123
$6,000 to $50,000 $2,975 to $29,370
Monthly rental
$105,000 to
$160,000
$2,852 to $5,251
3rd-party lease
-
Date of first delivery
Number installed to date
Serviced by
1973
100 of 150 Series
DPI
1973
100 of 150 Series
DPI
1970
150
DPI
August 1972
Over 100
Data 100
Jan. 1972
2,340
DCC and representatives
Tur n key su pport
for data co lIection/
management information systems
Turnkey support
Turnkey support
for data collection/ for data collecmanagement infor- tion, source data
management sysmati on systems
tems
Previously sold
as models PTC 8
and PRC 8
Turnkey support
for data collection
PROCESSOR AND MEMORY
Processor identity
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
PRICING AND AVAILABILITY
Purchase price
COMMENTS
© 1976 DATAPRO RESEARCH
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
16
1.2/0.96
256K
16
Disk, mag. tape,
card reader, pr i nter, punch, CRT,
paper tape, etc.
No
Yes
No
Yes
No
Most prominent
terminals
Standard
Available
AUGUST 1976
/
,
C13-010-111
Processors
Communications Processors - Equipment Specifications
Digital Equipment
Corporation
Front End System
MANUFACTURER AND MODEL
Digital Equipment
Corporation
PDP-11 Family
BiJse
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
I BM/360, I BM/370
GTEIS
IS/1101
GTEIS
IS/11 00
GSC Data Systems
T -578 System
-
I BM/360, I BM/370 I BM/360, I BM/370, I BM/360, I BM/370
CDC 3000/6000
Series, Honeywell
425
Yes
No
No
No
No
No
No
No
No
No
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
Yes
No
No
No
No
No
None
No
No
No
No
No
No
IBM 2780
emulation; RJE
Yes
No
No
No
Yes
Yes
-
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
-
-
NA
Groups of 16
Groups of 1
Groups of 1
NA
-
-
-
128
128
32
1
128
256
128
64
Variable
24
16
16
40
-
-
No effect
No effect
-
DEC PDP-ll /1 0,
11/40, 11/50
16
0.9/0.9/0.3
56K
Multi-level
DEC PDP-ll/l0,
11/40,11/50
16
0.9/0.9/0.3
56K to 256K
Multi-level
Disk, ca rd reader,
line printer, mag.
tape
IBM 1130,
GA 18/30
16
1.2
128K
8
Disk, mag. tape,
printers
GTEIS
GTEIS
16
0.75
128K
16
None
Yes
Yes
Yes
16
0.75
128K
16
Disk, mag. tape,
card reader/punch,
printer, paper tape
reader/punch
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Terminal handlers
TTY; DEC LA36,
VT50; IBM 2741
TTY; DEC LA36,
VT50; IBM 2741
All IBM and TTY,
Wiltek, Mohawk
IBM, Data 100,
TTY, GTEIS,
Honeywell 716
Yes
Yes
Yes
Yes; IBM/360,
IBM/370
I BM, Data 100,
TTY, GTEIS
Software pricing
Standard
Standard
Optional
Standard
Turnkey systems
No
No
Standard,
optional
Available
Available
Available
$32,000 to
$56,000
$10,000 to
$90,000
Contact vendor
Monthly rental
-
-
$150,000 to
$500,000
$4,500 to $15,000
$25,000 to
$40,000
$754 to $2,000
Date of first delivery
Number Installed to date
Serviced by
June 1972
150
DEC
February 1972
Over 300
DEC
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM_ LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identity
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
Line printer, card
reader
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
PRICING AND AVAILABILITY
Purchase price
Contact vendor
December 1969
April 1971
15
GSC Data Systems, GTEIS
Inc.
COMMENTS
AUGUST 1976
© 1976 DATAPRO RESEARCH
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
Yes
200
GTE IS
C13-010-112
Processors
Communications Processors - Equipment Specifications
Harris Corp.
4705
GTEIS
IS/1102
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
I BM/360, I BM/370 IBM/360,IBM/370 I BM/360, I BM/370
CDC 600017000,
UNIVAC 1100
Series
Host computer comm. software:
Yes
Yes
No
Used as is
No
No
Yes
Altered
No
No
Yes
Alterations provided
Replaced
Yes
No
No
Yes
No
Replacement provided
No
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
Yes
Yes
Yes
No
No
No
Hewlett-Packard
3000CX Series
Harris Corp.
CO-65
-
Yes
Yes
Yes
No
No
No
RJE
Yes
No
No
No
No
No
RJE
Honeywell
System 700
-
Honeywell Series
200,2000,6000;
NA
Yes
No
No
No
No
-
No
-
Yes
DBMS with
QUERY; RJE;
Time-sharing
Yes
No
No
No
Yes
No
RJE
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
96
16
16
112
255
255
24
0
180
24
0
24
8
24
32
32
32 (all to 2400 bps)
(rea I-ti me proc.)
32
128
128
64
4
128
-
No effect
No effect
No effect
-
PROCESSOR AND MEMORY
Processor identitY
GTEIS
Harris
DEC PDP-8
HP 3000CX
Honeywell 700
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
PrioritY interrupt levels
On-line peripheral devices
16
0.75
128K
16
-
16
1.0
128K
30
Console
12
1.5
6K to 96K
16
Console, printer,
mag. tape, card
16
0.9
96K to 128K
253
Plotter, printer,
disk, mag. tape,
card I/O
Console performance monitor
Yes
Yes
Yes
Yes
16
0.775
131 K
64
Printer, mag. card,
paper tape, reader,
punch, tape cassette
Yes
Yes
Yes
Yes
Yes; I BM/360,
IBM/370
IBM, Data 100,
TTY, GTEIS
Yes
No
Yes
Yes; I BM/360,
IBM/370
All I BM terminals
except SDLC
Yes
Yes
Yes
Yes
Software pricing
Standard
Turnkey systems
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
PRICING AND AVAILABILITY
Purchase price
Monthly rental
Date of first delivery
Number installed to date
Serviced by
Yes (MPE/C)
-
Yes
Yes
Yes
Yes (SPL)
-
-
CDC, Harris, and
I BM terminals
CRT, TTY, PTP,
graphics, BSC
TTY, Honeywell
VIP CRT's, BSC
Standard
Standard
Standard
Standard
Available
Available
Available
Available
Available
$30,000 to
$90,000
$1,075 to $2,425
$40,000 to
$140,000
$1,000 to $3,500
$.150,000 to
$400,000
$3,000 to $10,00
$99,500 (basic)
Contact vendor
3rd-party lease
Contact vendor
-
1970
1968
100
GTEIS
-
-
Harris Corp.
Harris Corp.
November 1972
250
Hewlett-Packard
-
COMMENTS
July 1972
Honeywell
Supports HP's
IMAGE data base
management system with QUE RY
language
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1976
C13-010-113
Processors
Communications Processors - Equipment Specifications
Honeywell
Datanet-355
Honeywell Series
200,2000
Honeywell Series
600,6000
Honeywell Series
60 Level 66
Honeywell Series
60 Level 66
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
Yes
No
No
No
No
No
None
Yes
No
No
No
Yes
Yes
-
Yes
No
No
No
Yes
Yes
None
Yes
No
No
No
yes
Yes
None
128
128
10
7
128
120
120
120
120
200
200
32
16
200
56
56
32
16
56
-
Reduces lines
No effect
No effect
380
380
96
48
Appx. 200 to
300
No effect
Honeywell
Honeywell
Honeywell
Honeywell
Honeywell
18
6.94
16K
1
Disk, mag. tape,
card units, printer
16
0.755
64K
64
Disk, TTY
18
1.0
32K/64K
256
Card reader,
printer
18
1.2
48K/64K
256
Disk, TTY; card
18
1.2
64K/128K1256K
256
Disk, TTY; card
reader, printer,
reader, printer,
mag. tape opt.
mag. tape opt.
COMPUTER SYSTEMS INTERFACED
Honeywell Series
Manufacturers and models interfaced
200,400,600
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM_ LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
(
PROCESSOR AND MEMORY
Processor identity
Word length, bits
Memory cycle time, microseconds
Memory capacitY, bytes
Priority interrupt levels
On-line peripheral devices
Honeywell
Datanet-6632
Honeywell
Datanet-6624
Honeywell
Datanet-2000
Honeywell
Datanet-30
MANUFACTURER AND MODEL
-
-
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
No
Yes
Yes
No
No
Yes
Yes
No
No
Yes
Yes
Yes
No
TTY 35, 35; most
Honeywell terminals; IBM BSC;
others
Standard
All HIS hard copy and CRT terminals and Remote Network
Processors; all TTY; IBM 2741; GE TermiNet 300/1200;
Execuport; IBM 2780; and many others
Software pricing
TTY; Honeywell
100 computers,760
CRT; GE TermiNet
300; IBM 2741
Standard
Standard
Standard
Standard
Turnkey systems
Available
Available
Available
Available
Available
Monthly rental
$37,160 to
$65,475
$2,000 to $4,000
$45,750 to
$175,000
$1,221 to $4,700
$118,320 to
$840,000
$2,620 to $18,345
$85,380 to
$168,660
$1,676 to $3,507
$128,474 to
$597,594
$2,519 to $12,283
Date of first delivery
Number installed to date
Servicacl by
August 1963
Honeywell
December 1972
November 1970
July 1974
September 1974
-
-
-
Honeywell
Honeywell
Honeywell
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
PRICING AND AVAILABILITY
Pu rchase price
COMMENTS
(-
No longer in production
,
AUGUST 19~6
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
-
Honeywell
Configuration simulator included for
host Level 66 sY5tem. Any remote
terminal or group
of terminals can be
network control
stations
C13-010-114
Processors
Communications Processors - Equipment Specifications
IBM
2701
MANUFACTURER AND MODEL
IBM
2702
IBM
System/370
IBM
2703
IBM
3704
Model 125
with ICA
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
I BM/360, I BM/370 I BM/360, I BM/370 IBM/360,IBM/370 Stand-alone computer system
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
Yes
No
No
No
No
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
Yes
No
No
No
No
-
-
Yes
No
No
No
No
No
No
No
-
-
-
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
Hard-wired controller
Hard-wired controller
Hard-wired controller
IBM 3125
IBM
-
-
-
32
0.480
98K to 262K
16
All standard
S/370 devices
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Field-developed
Field-developed
Field-developed
F ield-developed
Field-developed
programs for many programs for many programs for many programs for many programs for many
applications
applications
applications
appl ications
applications, remote N CP mode
2
15
88
22
32
31 (200 bps)
4
176 (165 bps)
16
32
4
15 (600 bps)
24
6
32
4
1
2
4
31
176
22
32
-
Yes
-
-
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identity
Yes
No
No
No
No
IBM/360, IBM/370
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
None
None
None
Console performance monitor
No
No
No
Yes
No
-
-
-
-
Yes
Yes
Yes
NA
Yes
Yes
Yes
No
TTY; all IBM (except SDLC) operting at up to 600
bps
Standard
TTY; all IBM excapt 2260 and
SDLC terminals
Standard
All IBM, TTY
terminals (except
SDLC, unless
370X is used)
Standard
All IBM, TTY
terminals
Software pricing
TTY;all IBM ineluding BSC and
2260 (but not
SDLC)
Standard
Standard
Turnkey systems
Available
Available
Available
Available
Available
$12,400 to
$80,500
$308 to $1,800
$40,000 to
$77,600
$993 to $1,800
$83,748 to
$350,000
$1,790 to $7,000
$385,000 to
$35,000 to
$615,000
$122,000
$8,500 to $14,600 $852 to $2,800
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
PRICING AND AVAILABILITY
Purchase price
Monthly rental
Date of first delivery
Number installed to date
Serviced by
COMMENTS
-
1965
1965
-
-
IBM
IBM
Hard-wired communications controller
Hard-wired communications controller
© 1976 DATAPRO RESEARCH
-
-
-
-
16K to 64K
None
-
April 1973
May 1973
-
-
IBM
IBM
IBM
Hard-wired communications controller
CORPORATION, DELRAN, N.J_ 08075
'REPRQDUCTION PROHIBITED
AUGUST 1976
C13-010-115
Processors
Communications Processors - Equipment Specifications
IBM
3705
Version I
MANUFACTURER AND MODEL
IBM
3705
Version II
Interdata
Model 6/16
Interdata
Model 8/32
Interdata
Model 7/32
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
I BM/360, I BM/370 IBM/360,IBM/370 I BM/360, I BM/370 I BM/360, I BM/370 I BM/360, I BM/370
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
Yes
No
No
No
No
Yes
No
No
No
No
No
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
Yes
Yes
Yes
Yes
Yes
Yes
F ield·developed
Field-developed
RJE, Time·sharing
programs for many programs for many
applications
applications
Yes
Yes
Yes
No
Yes
Yes
RJE, Time'sharing
Yes
Yes
Yes
No
Yes
Yes
RJE, Time·sharing
352
352
128
8
352
352
352
352
32
352
255
255
255
40
255
128
128
128
20
128
255
255
255
40
255
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
Reduces lines by
half
IBM
IBM
I nterdata 8/32
I nterdata 6/16
I nterdata 7/32
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
1.2
16K to 240K
4
None
18
1.0
32K to 256K
4
None
32
0.3
128K to 1 MB
1024
All I nterdata
peripherals
16
1.0
8K to 65K
255
All I nterdata
peripherals
32
0.75
32K to 1 M
1024
All I nterdata
peripherals
Console performance monitor
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes; I BM/370
Yes
Yes
Yes
Yes; IBM/370
Yes (OS/32MT)
Yes
Yes
Yes; IBM/370
Yes (OS/16MT)
Yes
Yes
Yes; IBM/370
Yes (OS/32MT)
Yes
Yes
Yes; IBM/370
Terminal handlers
All IBM, TTY
terminals
All IBM, TTY
terminals
IBM BSC, and
asynchronous
terminals
IBM BSC, and
asynchronous
terminals
IBM BSC, and
asynchronous
terminals
Software pricing
Standard
Standard
Optional
(ITAM/32)
Optional
(lTAM/32)
Optional
(lTAM/32)
Turnkey systems
Available
Available
Available
Available
Available
$49,500 to
$700,000
$1,285 to $17,700
$46,800 to
$50,000 to
$600,000
$500,000
$1,250 to $16,000
$2,000 to $25,000
-
$1,500 to
$1,500,000
-
-
July 1972
August 1976
IBM
July 1975
100
I nterdata
Spring 1976
July 1974
-
-
Interdata
Interdata
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneouslY
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identity
SOFTWARE
Operating system
Message control programs
Assembler
Cross assemb Jer
PRICING AND AVAI LABI LITY
Pu rchase price
Monthly rental
Date of first delivery
Number installed to date
Serviced by
IBM
No
Yes
Yes
Yes
Yes
COMMENTS
AUGUST 1976
© 1976 DATAPRO RESEARCH
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
C13-010-116
Processors
Communications Processors - Equipment Specifications
Intercomputer
i5X
MANUFACTURER AND MODEL
Memorex
Memorex
Memorex
1270
1270
1270
Model D4A
Model D5A
Model D6A
Memorex
1380
COMPUTER SYSTEMS INTERFACED
IBM/360,IBM/370, I BM/360, I BM/370 IBM/360,IBM/370 I BM/360, I BM/370 IBM/360, IBM/370
Manufacturers and models interfaced
custom
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Spooling, IBM
2821 emulation
No
Yes
No
No
No
No
None
No
Yes
No
No
No
No
None
No
Yes
No
No
No
No
None
Yes
Yes
Yes
Yes
No
No
-
250
250
24 to 48
2 to 8
250
32
32
32
6
32
64
64
64
6
64
96
96
96
6
96
240
240
120
16
240
No effect
No effect
No effect
No effect
Reduces lines by
half
i5X
None used
None used
None used
CCI CC-BO
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
18
1.0/0.25
128K
14 to 21
All
-
-
-
None
None
None
8
0.560
64K to 512K
8
None
Console performance monitor
Yes
No (CE panel
only)
No (CE panel
only)
No (CE panel
only)
Yes
Yes
Yes
Yes
Yes 360/370
No
No
No
No
No
No
No
No
No
No
No
No
Yes
No
Yes
No
Terminal handlers
"All"
No
No
No
Software pricing
Standard
-
-
-
TTY, CRT,
ASCII, all IBM
(except SD LC
now)
Standard
Turnkey systems
Available
-
-
-
-
$20,000 to
$180,000
$30,000 to
$50,000
$800 to $2,000
$40,000 to
$80,000
$1,100 to $3,200
$60,000 to
$100,000
$1,700 to $4,000
$60,000 to
$140,000
$2,000 to $8,000
August 1972
500
Memorex
Octo ber 1 973
300
Memorex
May 1971
300
Memorex
January 1976
2
Memorex
Hard-wired replacement for IBM
2701,2701,2703
and 2906
Hard-wired replacement for IBM
2701,2702,2703
and 2906
Upgrade of
D1A model and
expansion from
D4A and D5A
models
SDLC in 4th
quarter of 1976
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneouslY
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identity
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
PRICING AND AVAILABILITY
Purchase price
Monthly rental
-
Date of first delivery
Number installed to date
Serviced by
January 1973
36
Sorbus and third
party
COMMENTS
-
-
© 1976 DATA PRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
\
AUGUST 1976
C13-010-117
Processors
Communications Processors - Equipment Specifications
Microdata
1600/60
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
UNIVAC 1108
Manufacturers and models interfaced
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identity
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Norfield
Electronics, Inc.
DCS400
Modular Computer Modular Computer Modular Computer
Systems
Systems
Systems
Modcomp IVCP
Modcomp I
Modcomp IICP
None
IBM/360, IBM/370, IBM/360,IBM/370, I BM/360, I BM/370,
Univac
CDC 3000/6000/
CDC 3000/6000/
Cyber, custom
Cyber, custom
Yes
No
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
Yes
Yes
Yes
No
No
No
No
No
No
No
No
-
No
No
No
No
No
No
Custom
Yes
No
No
No
Yes
Yes
Process contro 1/
Maxnet, custom
Yes
No
No
No
No
Yes
Process contro 1/
Maxnet~ custom,
HASP, RJE
Yes
Yes
Yes
No
Yes
Yes
HASP
256
256
256
256
256
48
48
4
1
48
256
256
256
256
256
256
256
256
256
256
64
64
4
1
32
No effect
No effect
No effect
No effect
Reduces lines by
half
Microdata
Modcomp I
Modcomp II/CP
Modcomp IV/CP
-
16
1.0
128K
1
Microdata peripherals
16
0.8
64K
4 + 128 vectored
Disk, mag. tape,
16
0.8
128K
16 + 128 vectored
Disk, mag. tape,
card reader,
card reader,
16
0.96
128K
8
Terminals,
printers
printer, etc.
printer, etc.
16/32
0.5
512K
16 + 128 vectored
Disk, mag. tape,
card reader,
printer, etc.
Yes
Yes
Yes
Yes
Yes
No
Yes (firmware)
Yes
Yes
Yes (MAX I)
No
Yes
Yes; I BM/370,
CDC 6000
None
Yes (MAXCOM)
Yes
Yes
Yes; IBM/370,
CDC 6000
TTY, IBM BSC,
CDC 200 UT
Yes
Yes
Yes
No
Standard
Terminal handlers
Hazeltine 2000,
ADDS 580
Software pricing
Optional
Standard
Standard
Yes (MAX IV)
Yes
Yes
Yes; IBM/370,
CDC 600
TTY, IBM BSC,
2780/3780, CDC
200 UT, Univac
1004
Optional
Turnkey systems
Not available
Not available
Not available
Not available
Available
$10,000 to
$25,000
$3,600 and up
$16,000 and up
$29,500 and up
$14,900 to
$41,500
$520 to $1,470
PRICING AND AVAILABILITY
Purchase price
Monthly rental
-
-
-
-
Date of first delivery
Number installed to date
Serviced by
July 1973
October 1971
Over 50
Modcomp
March 1973
Over 60
Modcomp
December 1975
-
Dedicated
special-purpose
CPU; custom
configured
Front end or
message switch;
up to 16 programmable trans-
Front end or
message switch;
up to 16 programmable trans-
COMMENTS
AUGUST 1976
Microdata
© 1976 DATAPRO RESEARCH
Modcomp
mission rates;
mission rates;
4-port memory
4-port memory
CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
OS 40, TTY, TWX,
IBM 2780/3780
March 1975
10
Northfield
50,000 bps
maximum
throughput
C13-010-118
Processors
Communications Processors - Equipment Specifications
COMPUTER SYSTEMS INTERFACED
Custom
Manufacturers and models interfaced
Host computer comm_ software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGU,RATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full"'duplex operation
North American
Philips
DS 18
North American
Philips
DS 714/xx
MANUFACTURER AND MODEL
Omnus Computer
Corporation
Omnus-1/CU
North American
Philips
DS7
Periphonics
T-Comm 7
Custom
Custom
Univac 1100
Series
I BM/360, I BM/370,
Burroughs (all),
NCR, Honeywell,
others
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
Yes
Yes
-
Yes
Yes
Yes
Yes
Yes
Yes
RPQ
RPQ
RPQ
Yes
Yes
Telex/TWX/Gentex
packet switching;
process control
Yes
RPQ
RPQ
RPQ
Yes
Yes
Telex/TWX/Gentex
packet switching;
process contro I
Yes
RPQ
RPQ
RPQ
Yes
Yes
Telex/TWX/Gentex
packet switching;
process control
Yes
Yes
Yes
No
Yes
No
Yes
No
Yes
Yes
Yes
Yes
Store and forward; IBM 2B03,
2848
full network control
-
-
-
384
384
384
16
384
93
93
93
5
All
31,000
3,968
112
Varies
375
60
Reduces lines by
half for voice and
wide-band
No effect
Reduces lines by
half
No effect
No effect
Philips
Philips
Philips
Omnus-1
DEC PDP-11
36
2.0
1 million
128
Drum, fixed/moving-head disk, card
reader/punch, line
printer, etc.
Yes
16
0.84
64K
64
Drum, fixed/moving-head disk, mag.
tape cassette, line
printer, paper tape
Yes
16
1.0
32K
1
Drum, fixed/movin!J"head disk, mag.
tape cassette, line
printer, paper tape
Yes
16
0.65
32K to 262K
32
Disk, drum, mag.
tape, card reader,
paper tape reader/
punch
Yes
16
1.0
16K-2M (Peri-Pacs)
8
Disk, mag. tape,
printer, cassette
TTY
Yes
Yes
Yes
No
Yes
Yes
Yes
No
Yes
Yes
No
Yes, DS 714
Yes (Peri-Comm)
Yes
Yes
Yes, IBM 360/370
TTY/TWX; Telex;
custom
custom
Software pricing
Computek, IDI,
CCI, & Delta
CRTs; TTY/TWX;
Telex; custom
Standard, custom
Yes
Yes
Yes
Yes, UNIVAC,
IBM, Xerox, DEC
UNIVAC DCT
500/1000/2000,
U 100,1004; IBM
2741,2780, TTY
Standard, custom
Standard, custom
-
Optional
Turnkey systems
Available
Available
Available
Available
Available
$400,000 (basic)
$100,000 (basic)
$35,000 (basic)
$80,000 (basic)
Month Iy rental
$8,000 (basic)
$2,000 (basic)
$1,000 (basic)
Date of first delivery
Number installed to date
Serviced by
1967
67
North American
Philips
1972
14
North American
Philips
1974
12
North American
Philips
$43,000 to
$400,000
$2,500 to
$100,000
June 1974
3
Omnus
Replacement for
Univac C/SP or
CTMC
System can also
include voice rasponse module
(Voicepac 2000)
PROCESSOR AND MEMORY
Processor identity
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Terminal handlers
PRICING AND AVAILABILITY
Purchase price
COMMENTS
© 1976 DATAPRO
Varies
512
60
4
All
No
No
TTY/TWX; Telex;
RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHiBITED
Yes
CRT, teleprinter,
banking, and POS
devices, etc.
$2,500 (basic)
1 st qtr_ 1971
Over 200
Periphonics
AUGUST 1976
C13-010-119
Processors
Communications Processors - Equipment Specifications
Systems
Engineering
Laboratories
SEL32
RCA Global
Communications
Miniplus
MANUFACTURER AND MODEL
Telefile Computer
Products
TCP-64
Texas Instruments
EMS II
Telex
6705
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
IBM/360, IBM/370, IBM/360, IBM/370 IBM/360, IBM/370 IBM/360,IBM/370 I BM/360, I BM/370,
DECsystem 10
others
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
r.- es
r.- es
r.- es
Yes
Yes
Yes
No
No
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
Yes
Yes
No
Yes
No
No
~o
Yes
No
No
No
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
Yes
Yes
es
Dedicated commu- RJE, HASP
es
r.-Yes
r.-
-
nications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
(
PROCESSOR AND MEMORY
Processor identity
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
Console performance monitor
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
128
Yes
No
No
No
No
Yes
Yes
No
No
No
Yes
Yes
Yes
No
No
No
Multiplexing,
DDS, network
management
Yes
No
No
No
Yes
Yes
None
244
244
244
244
256
256
6
8
256
180
180
16
4
rI-28
-
128
512
512
112
80
512
No effect
-
No effect
Reduces lines by
half
Reduces lines by
half
General Automaion SPC-16
16
0.96
256K
~EL 32
Lockheed LEC 16
Own
TI 980B
~2
16
1.0
8K to 128K
16 to 64
Drum, disk, mag.
ape, ca rd readers/
punches, ppr. tape
rdrs./punches, etc.
Yes
16
1.2
128K
4
None
16
0.75
128K
3to 64
Disk, mag. tape,
card reader,
Yes
Yes
Yes
Yes; IBM/360,
IBM/370
IBM 2740/2741/
2260; TTY 28/33/
35; BSC terminals
Standard
Yes
Yes
Yes
Yes; IBM/360,
I BM/370
IBM I, II, III,
TTY, TI 700,
BSC; TTY; 83/B3; GE TermiNet,
HASP, 2740, 2780, Wiltek, Dataspeed
2260,3270
Standard
I-
Disk, mag. tape,
paper tape, CRT,
eleprinters
0.6
1,024K
128
~tandard types
Yes
Yes
Yes
Yes
Yes
-
printer, console
Yes (see below)
Yes
-
Yes
Yes
Yes
No
Terminal handlers
Most prominent
[TTY, CRT, etc.
Software pricing
-
~tandard
Turnkey systems
Available
Available
Available
-
Available
~70,OOO to
~75,OOO to
$40,000 to
$200,000
$1,500 (basic)
$30,000 to
$75,000
$900 to $2,500
$60,000 to
$300,000
Monthly rental
~200,OOO
~200,000
~2,OOO to $15,000 -
Date of first delivery
Number installed to date
Serviced by
1972
17
RCA
June 1969
15
Telefile
October 1973
40
Telex
1973
Texas Instruments
and
Yes
Yes
Yes
custom
PRICING AND AVAILABILITY
Pu rchase price
COMMENTS
Pricing is for
single-processor
~ystem
AUGUST 1976
October 1975
12
SEL
Console offers
Hard-wired controller (synchrocommand and
nous) has DMA and control, displaY,
operates on data
trace and a Iter
block basis
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
-
C13-010-120
Processors
Communications Processors - Equipment Specifications
Texas Instruments
DXS
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
Manufacturers and models interfaced
Host computer comm. software:
Used as is
Altered
Alterations provided
Replaced
Replacement provided
SUPPORTED APPLl.CATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
Maximum number of lines active
simultaneously
Effect of full-duplex operation
PROCESSOR AND MEMORY
Processor identity
UNIVAC
C/SP
Texas Instruments
Model 700 TPS
UNIVAC
3760
IBM/360, IBM/370
IBM/360, IBM/370
UNIVAC 1106, 1108,
1110
IBM/360, IBM/370
Yes
No
No
No
No
Yes
No
Yes
No
No
No
No
Yes
No
No
No
No
No
No
No
No
Yes
No
No
No
Yes
-
-
Yes
Yes
Yes
No
No
No
Broadcast statistics;
line testing
-
Yes
Yes
Yes
Yes
No
EFTS, hospital
accounting
-
60 (FOX)
44
16
4
All
-
4
128
128
128
16
128
384
384
384
6
384
No effect
-
Reduces lines by half
Reduces lines by half
-
4
-
TI 960B (multiple)
TI 960B
UNIVAC
UNIVAC
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
16
0.75
128K
1
Disk, mag. tape,
card reader,
printer, console
16
0.75
48K
3
TI "Silent 700"
terminal (742)
16
0.63
32Kto131K
5
Card reader/punch,
printer, paper tape
16
0.75
16K to 131 K
4
None
Console performance monitor
Yes
Yes
Optional
Yes
Yes
Yes
Yes
Yes; IBM/370
Yes
Yes
Yes
No
Ves
Yes
No
Yes; IBM/360, IBM/370
Terminal handlers
TI 913/914 CRT,
TI "Silent 700" data
terminals
TI "Silent 700"
data terminals
Yes
Yes
Yes
Yes; UNIVAC 1100
Series
All UNIVAC, all TTY,
and all IBM BSC
terminals
Most IBM terminals
and all UNIVAC
terminals
Software pricing
Extra
Standard
Standard
Standard
Turnkey systems
Available
Available
No
Available
$40,000 to $500,000
NA
$80,000 to $175,000
$55,000 to $325,000
Monthly rental
$2,000 (Excl. Maint.)
NA
$2,000 (basic)
$1,200 to $7,000
Date of first delivery
Number installed to date
Serviced by
March 1972
January 1973
-
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
PRICING AND AVAILABILITY
Purchase price
COMMENTS
1972
1976
Texas Instruments
DXS stands for Data
Exchange System
-
-
Texas Instruments
UNIVAC
TPS stands for
Terminal Polling
System
C/SP stands for
Communications/
Symbiont Processor
-
UNIVAC
/
!
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N.J. 08075
REPRODUCTION PROHIBITED
AUGUST 1976
C13-010-121
Processors
Communications Processors - Equipment Specifications
Western Union
Information
Systems C2100
Varian Data
Machines
V 76
Varian Data
Machines
V 73N 74
Varian Data
Machines
V 75
IBM/360,IBM/370
CDC 3000/6000,
Burroughs 300/
3500
IBM/360,IBM/370
CDC 3000/6000,
Burroughs 300/
3500
IBM/360, IBM/370 Univac 1100,490
Series, 418
CDC 3000/6000,
Burroughs 300/
3500
Yes
No
No
No
No
Yes
No
No
No
No
Yes
No
No
No
No
No
Yes
Yes
No
No
Yes
No
No
No
Yes
Yes
RJE, data base
Yes
No
No
No
Yes
Yes
RJ E, data base,
Yes
No
No
No
Yes
Yes
RJ E, data base
Yes
No
No
No
Yes
Yes
RJ E, data base
management,
management,
management,
management,
Yes
No
No
No
Yes
No
Line multiplexing
and demultiplexing
(TOTAL), TSS
(TOTAL), TSS
(TOTAL), TSS
(TOTAL), TSS
Maximum number of lines active
512
512
512
128
512
512
512
512
128
512
512
512
512
128
512
512
512
512
128
512
256
256
64
8
256
simultaneously
Effect of full-duplex operation
No effect
No effect
No effect
No effect
No effect
Varian V 72
Varian V 73/V 74
Varian V 75
Varian V 76
Word length, bits
Memory cycle time, microseconds
Memory capacity, bytes
Priority interrupt levels
On-line peripheral devices
16
0.66, .99
512K
64
Disk, mag. tape,
card reader/punch,
printer
16
0.33, .66, .99
512K
64
Disk, mag. tape,
card/reader/punch,
printer
8,16,32
0.66
512K
64
All common
peripherals
8, 16,32
0.66
512K
64
All common
peripherals
18
0.9
16K
Scanner logic
Console performance monitor
Yes
Yes
Yes
Yes
-
Yes
Yes
Yes
Yes; I BM/360,
IBM/370
TTY and equiv.,
IBM 3270, BSC,
Yes
Yes
Yes
Yes; IBM/360,
IBM/370
TTY and equiv.,
IBM 3270, BSC,
common financial
terminals
Standard
Yes
Yes
Yes
Yes; IBM/360,
IBM/370
TTY and equiv.,
IBM 3270, BSC,
common financial
terminals
Standard
Standard
Varian Data
Machines
V72
MANUFACTURER AND MODEL
COMPUTER SYSTEMS INTERFACED
IBM/360,IBM/370
Manufacturers and models interfaced
CDC 3000/6000,
Burroughs 300/
3500
Host computer comm. software:
Yes
Used as is
No
Altered
No
Alterations provided
No
Replaced
No
Replacement provided
SUPPORTED APPLICATIONS
Front-end processing
IBM 270X emulation
IBM 370X emulation without NCP
IBM 370X emulation with NCP
Remote concentration
Message switching
Other supported applications
COMM. LINES CONFIGURATION
Maximum number of half-duplex lines
Narrow-band lines
Voice-band lines
Wide-band lines
PROCESSOR AND MEMORY
Processor identity
SOFTWARE
Operating system
Message control programs
Assembler
Cross assembler
Hard-wired/own
microprocessor
-
Firmware
Software pricing
terminals
Standard
Yes
Yes
Yes
Yes; IBM/360,
IBM/370
TTY and equiv.,
IBM 3270, BSC,
common financial
terminals
Standard
Turnkey systems
Available
Available
Available
Available
Available
$10,500 to
$200,000
Lease plans
available
October 1973
Over 250
Varian
$10,000 to
$300,000
Lease plans
available
October 1972
Over 500
Varian
$35,000 to
$200,000
Lease plans
available
August 1975
$8,000 to
$200,000
Lease plans
available
March 1976
$88,300 to
$250,000
-
-
-
Varian
Varian
Univac
Terminal handlers
common financial
PRICING AND AVAILABILITY
Purchase price
Monthly rental
Date of fi rst del ivery
Number installed to date
Serviced by
1976
Yes
Yes; Univac 1100
"All"
October 1973
Hard-wired controller with programmable line
adapters
COMMENTS
AUGUST
-
© 1976 DATAPRO RESEARCH CORPORATION, DELRAN, N,J. 08075
REPRODUCTION PROHIBITED
Source Exif Data:
File Type : PDF File Type Extension : pdf MIME Type : application/pdf PDF Version : 1.3 Linearized : No XMP Toolkit : Adobe XMP Core 4.2.1-c041 52.342996, 2008/05/07-21:37:19 Create Date : 2018:10:10 20:27-08:00 Modify Date : 2018:10:10 21:05:45-07:00 Metadata Date : 2018:10:10 21:05:45-07:00 Producer : Adobe Acrobat 9.0 Paper Capture Plug-in Format : application/pdf Document ID : uuid:18d686ca-4aef-d74f-8270-a4627c7106d2 Instance ID : uuid:f63b6e87-395d-0740-90d2-581ef5177ee5 Page Layout : SinglePage Page Mode : UseNone Page Count : 412EXIF Metadata provided by EXIF.tools