C23 695_PCI_Smart Net 695 PCI Smart
User Manual: Pdf C23-695_PCI_SmartNet
Open the PDF directly: View PDF 
.
Page Count: 12
(
(.
C23-695-101
Protocol Conversion
Systems
PCI
SmartNet
Protocol Converters
daIapro
ANALYSIS
UPDATE:
Since
our
last report on the
PCl
SmartNet
Pro-
tocol Converters.
PCl
has
dropped
the
Series
1000
PADs
which
performed
protocol conversion.
PCl
is
marketing
the
Series 2000. 3000.
and
4000
PADs
that
have been enhanced
with
SNA
connectivity. These products will
be
covered
in
Datapro Reports on Data Communications' PAD tab.
PCl
has
added
the
SmartNet
376 to its line. a protocol converter
that
is
used
in place
of
an
IBM
3X7413X76
to allow asyn-
chronous devices access to 3270-based applications across
an
X25
network.
To broaden its range
of
network solutions, Telematics In-
ternational Inc., a wide area networking company that spe-
cializes in data switching, acquired Protocol Computers
Incorporated in July 1986. One
of
the original developers
of
protocol conversion technology, PCI has contended in
the protocol conversion market since 1976. PCI manufac-
tures high-performance protocol converters and X.25
communications products to link ASCII asynchronous
equipment to IBM mainframes and system 3X host com-
puters and to provide a gateway to wide area networks,
data PBXs, and packet switched networks.
It
also markets
communications software for micro-to-mainframe file
transfer applications.
Within its SmartNet X.25 Series, PCI markets the Smart-
Net 2000, 3000, and 4000 Series. These PADs perform
asynchronous, muitiprotocol, and SNA switching func-
tions.
PCI's protocol conversion products include the SmartNet
276, SmartNet 376, and SmartNet 5250/T.
All
SmartNet
PC/'s SmartNet 276 is an ASCII-to-SNA 3270 protocol con-
verter that allows
ASCII
terminals. printers. and
IBM
Personal
Computers to attach to
IBM
SNA networks as 3278 displays.
VENDOR: PCI, Inc.,
26630
Augoura Road, Cala-
basas, California
91302-1988.
Telephone (818)
880-5704.
MODELS: SmartNet
276-ASCII-to-3270
SNA/
SDLC protocol converter;
SmartNet
376
async
3270/X.25;
SmartNet
5250/T-async
to
IBM
34/36/38
via
twinax.
TRANSMISSION RATES: On the host side, pri-
mary rates range from
900
to
19.2K
bps, while
primary rates
on
the terminal side are
19.2K
bps.
COMPETITION: In protocol conversion market:
IBM,
Local
Data,
Lee
Data/Data Stream.
PRICING:
$2,650
to
$8,570
(SmartNet
276);
$2,925
(SmartNet
5250/T).
REPORT HIGHLIGHTS: PAGE
Market Position ............................... 1
02
SPECIFICATIONS ................................
102
PRICING .............................................
103
(short for "smart networking") protocol converters offer
dial-in, dialback security; full IBM screen emulation;
ex-
tensive
file
transfer capabilities that are compatible with
IBM's resident host software programs; and the most nec-
essary ingredient, field upgradability.
All
SmartNet prod-
ucts are available in desktop or rack-mountable versions.
PCl's SmartNet customers include Fortune 1000 compa-
nies, small-end users, original equipment manufacturers,
value-added resellers, and value-added distributors. The
products currently address the following markets: finan-
cial, insurance, manufacturing, government, communica-
tions, transportation, medical, education, small business,
and automotive.
PRODUCT EVALUATION
PCI offers a broad line
of
conversion products and is,
therefore,
an
excellent source for prospective buyers whose
needs are specialized or varied.
As
one
of
the first compa-
nies in the protocol conversion market, PCI
is
experienced
in researching and developing conversion technologies,
which can be difficult to implement. One
of
the company's
strongest advantages
is
its established position in the mar-
ketplace.
Those contemplating the use
of
PCI converters should
note that different models handle different conversion re-
NOVEMBER
1989
COPYRIGHT
© 1989 McGRAW-HILL.
INCORPORATED.
REPRODUCTION
PROHIBITED
DA
T
APRO
RESEARCH.
DELRAN
NJ
08075
USA
C23-695-102
Protocol Conversion
Systems
PCI
SmartNet
Protocol Converters
quirements. This can pose a problem for networks that use
several different protocols simultaneously. A
few
conver-
sion systems provide line concentration and multiple pro-
tocol
capability,
whereby several
different
types
of
emulations are available on software modules loaded from
an IBM host to the converter. In some cases, it is cheaper
to install a multi protocol converter than a variety
of
con-
verters, each handling a separate emulation. The major
disadvantage
of
a multiconversion unit, however, is the
extensive host-based programming involved in defining
parameters for its operation. There are trade-offs in install-
ing a multiprotocol converter instead
of
a variety
of
differ-
ent units, and users need to analyze network requirements
carefully in terms
of
both types
of
products.
In
June
1989,
PCI
introduced
the
SmartLink
52501
MacCOM software. With this product, PCI has achieved
an industry first: providing full-function connectivity be-
tween the Macintosh and IBM midrange systems without
requiring hardware add-ons to the Macintosh workstation.
SmartLink 5250/MacCOM will appeal to many users be-
cause they will be able to retrieve IBM system files and
merge the data into Macintosh applications. Since the soft-
ware supports the Macintosh user interface, the connec-
tions to IBM systems are transparent. In addition, prior to
downloading to the Macintosh, the contents
of
System/3X
and AS/400 files can be filtered on the host. This proce-
dure supports the use
of
popular database software such as
Excel, Jazz, Multiplan, and 4th Generation. Users can per-
form record searches on the host omine, thereby freeing
them to undertake other interactive functions.
MARKET POSITION
PCI
is
one
of
the leading vendors in the protocol conver-
sion market. Although IBM's
entry
into
the
market
strongly affected the sales
of
smaller vendors, PCI is hold-
ing its own. PCI is
unique-it
is
one
of
the
few
vendors
that specializes in a particular data communications tech-
nology. The company has researched and developed proto-
col
conversion
technology
since
1980,
when
only
Industrial Computer Controls, Inc. (later purchased by
Micom) offered significant competition. This experience
is PCI's strongest competitive advantage.
Since its alignment with Telematics, PCl has branched out
into the X.25 equipment market, where there is much ac-
tivity and profit potential. PCI is positioned well in the
X.25 equipment market, which is a natural extension
of
the company's existing product line.
SPECIFICATIONS
MODELS:
SmartNet
276;
SmartNet
Series 376,
and
SmartNet 5250/T.
DATE
OF
ANNOUNCEMENT: SmartNet Series
200-
March 1985; SmartNet
5250/T
-March
1987.
DATE
OF
FIRST DELIVERY: SmartNet Series
200-
March 1985; SmartNet 5250/T
-March
1987.
SERVICED
BY:
PCI, Inc.
MODELS
SmartNet 276: This model is an asynchronous 3270 cluster
controller that provides connectivity for asynchronous ter-
minals, personal computers, printers, and plotters to an
IBM 3270 SNA host. Asynchronous devices attached to
the SmartNet 276 can make use
of
host applications that
support full-screen 3270 displays and printers. Devices
that would have to connect through the Network Terminal
Option (NTO) licensed program running
on
an
IBM 3705
or
3725 communications controller can communicate
through SmartNet 276 to IBM host applications.
PCI equips the 276 with up to 32 ports to support the at-
tachment oflocal and remote ASCII devices, which appear
to
an
IBM SNA host as IBM 3270 displays and printers.
Users can attach the SmartNet 276 remotely to
an
IBM
host via synchronous modems on a multidrop SNAlSDLC
line with other controllers
or
directly attach it to an IBM
37X5 without a modem at speeds
up
to 19,200 bits per
second. Either attachment occurs through
an
RS-232-C
connection.
The unit supports most asynchronous displays, including
IBM 3101
and
Digital VT 1 00. In graphics mode, the
SmartNet 276 supports many ASCII graphics terminals,
such as
Tektronix
displays.
Users
can
access SASI
GRAPH, PLOT-lO, DISSPLA and TELE-A-GRAPH, and
DI 3000 applications through the same SmartNet 276 that
supports nongraphic terminals. SmartNet 276 supports al-
most any ASCII serial printer and appears to the host as an
IBM 328X printer. Users can directly connect printers to
the 276
or
attach them to a display auxiliary port.
SmartNet 376: This model
is
a protocol converter that
is
used in place
of
an
IBM
3X74/3X76
to provide asynchro-
nous devices with access
to
3270-based applications across
an X.25 network. An SNA host supports SmartNet 376
through a front
end
equipped with
the
NCP
packet-
switching interface,
or
through a public
or
private X.25
network. Instead
of
the NCP interface, the host computer
can use a SmartNet 1200 Host SNA PAD as a front end.
The 376 supports a full-duplex HDLC link with LAPB
COPYRIGHT
© 1989 McGRAW-HILL.
INCORPORATED.
REPRODUCTION
PROHIBITED
DA T
APRO
RESEARCH.
DELRAN
NJ
08075
USA
NOVEMBER
1989
(-
C23-695-1
03
Protocol Conversion
Systems
PCI
SmartNet
Protocol Converters
link-level protocol at speeds up to 19.2K bps. Its display
and printer support are the same
as
those
of
the 276.
SmartNet 5250/T: This model provides a fully compatible
twinax interface for connecting up to seven asynchronous
devices to an IBM System
34/36/38
or 5294 without neces-
sitating an additional investment in IBM communications
hardware or software. Local and remote displays can com-
municate with IBM 5291, 5292 (Model 01), and 3180
(Model 2) System 34-/36-/38-based application programs
without any host reprogramming.
SmartNet
5250/T
attaches to the System
34/36/38
or
IBM
5294 via a standard two-conductor shielded twinax cable.
Users can place the
5250/T
up to 5,000 feet from the host
in an arrangement that allows other twinax workstations
that are connected upstream to share the twinax cable. The
unit supports most popular asynchronous displays, such as
IBM
316113162/3163/3164
and Digital
VTl
001VT200.
Video and editing support allow the user to connect 132-
column/27
line asynchronous displays to emulate IBM
3180 Model 2 terminals. The
5250/T
also provides seven-
color support to enable asynchronous color displays to em-
ulate IBM 5292 Model
01
terminals.
Transmission Specifications
The SmartNet
276
provides up to 32 physical RS-232-C
ports that offer simultaneous support for any combination
of
up
to 32 ASCII terminals, PCs, and printers attached
directly or remotely via modems at speeds from 300 to
19,200 bps using even, odd, or no parity. PCs or terminals
can also access SmartNet 276 via any port contention de-
vice capable
of
accepting an RS-232-C signal and selecting
a port on the 276, such
as
switches, PBXs, or CBXs.
The SmartNet 376 supports a full-duplex HDLC link with
LAPB link-level protocol at speeds up to 19.2K bps.
The SmartNet 5250/T supports asynchronous data rates
up to 19.2K bps.
Device Control
To set up and configure the SmartNet 276, SmartNet 376,
and SmartNet
5250/T,
the user follows factory default pa-
rameters to connect the system online. Full-screen 3278-
style configuration menus facilitate the reconfiguration
of
the devices from the control port.
All
configuration param-
eters are stored in nonvolatile memory to be protected
from power outages.
The
5250/T
provides asynchronous-to-IBM System
34/36/38
conversion
via
twinax cable. The unit emulates the
IBM
3180.
5219. 525.5291. or 5292 display stations.
Software
SmartLink 5250/MacCOM: Used in conjunction with the
SmartNet
5250/T,
SmartLink
5250/MacCOM
connects
Apple
Macintosh
workstations
to
IBM AS/400
and
System/3X
midrange systems. It supports interactive
transactions, bidirectional file transfers, and editing be-
tween the two systems. SmartLink
5150/MacCOM
pro-
vides full-function connectivity between the Macintosh
and IBM midrange systems without requiring hardware
add-ons to the Macintosh workstation.
Users can connect the Macintosh through its standard
asynchronous serial port to the
5250/T
and achieve the
effect
of
a Macintosh emulating an IBM 5291 twinax ter-
minal. In addition to supporting both direct cabling and
dial-in connections, an asynchronous gateway can connect
Macintosh stations networked via an AppleTalk LAN. In
this mode, each Macintosh can perform multiple sessions
with the host.
Since SmartLink
5250/MacCOM
fully supports the Ma-
cintosh user interface, connection to IBM systems
is
user
transparent. Contents
of
System/3X and AS/400 files can
be filtered on the host before downloading to the Macin-
tosh. To free the Macintosh for other interactive tasks, us-
ers can perform record searches on the host offline. The
Macintosh printer can be configured to output
System/3X
and AS/400 listings, text, or spreadsheets.
PRICING
The SmartNet 276 with 8 asynchronous ports costs $2,650
and with
32
asynchronous ports, $8,570. The SmartNet
5250/Twith seven asynchronous ports costs $2,925. Smart-
Link PC File Transfer Communications Software costs
$95, and SmartLink
5250/MacCOM
costs $1,200. 0
NOVEMBER
1989
COPYRIGHT
© 1989 McGRAW-HILL.
INCORPORATED.
REPRODUCTION
PROHIBITED
DA
T
APRO
RESEARCH.
DELRAN
NJ
08075
USA
C23-695-101
Protocol Conversion
Systems
PCI
SmartNet
Protocol Converters
daIapto
ANALYSIS
UPDATE: Holding 27 percent
of
the installed base
of
protocol converters at
IBM/PCM
mainframe sites
(ac-
cording to a Computer Intelligence Corporation study),
PCI
is a major vendor in the protocol conversion arena.
With the introduction in 1985 the SmartNet Series 1000
packet assembler/disassemblers
(PADs)
that perform proto-
col conversion, PCI also entered the X.25 PAD market.
Covered in this report are PCl's top SmartNet protocol
conversion products,
as
well as the SmartNet 1000 units.
To
broaden its range
of
network solutions, Telematics,
International Inc., a wide area networking company that
specializes
in
data switching, acquired Protocol Comput-
ers Incorporated
in
July 1986. One
of
the original devel-
opers
of
protocol
conversion
technology,
CI
has
contended in the protocol conversion market since 1976.
Before the acquisition, however, PCI was losing ground
to
IBM and other competitors. PCl's rivals quickly scooped
up
shares
of
the conversion market once they introduced
products. Since the acquisition, Protocol Computers, now
officially called PCI, Incorporated, is spending more
on
marketing communications
and
expanding its customer
support. According to PCI, as
of
January 1987, more than
20,000
of
its protocol converters are installed worldwide.
PCI manufactures high-performance protocol converters
and
X.25 communication products linking ASCII asyn-
chronous equipment to IBM mainframes and System/3X
host
computers
to
provide a gateway to wide area net-
works, data PBXs, and packet switched networks.
It
also
markets communications software for micro-to-main-
frame
fIle
transfer applications.
PCl's SmartNet
276
is
an
ASCII-to-SNA 3270 protocol
con-
verter
that
allows
ASCII terminals, printers, and IBM
Per-
sonal Computers
to
attach
to
IBM
SNA networks
as
3278
displays.
VENDOR: PCI, Incorporated,
26630
Augoura
Road, Calabasas, California
91302-1988.
Tele-
phone (818)
880-5704,
(800)
423-5904.
MODELS:
SmartNet
251-ASCII
to
IBM
34/36/
38
SNA/SDLC protocol converter;
SmartNet
271-ASCII
to
3270
bisync protocol converter;
SmartNet
276-ASCII
to
3270
SNA/SDLC
proto-
col converter;
SmartNet
1200-X.25
to
3270
SNA
host
packet
assembler/disassembler
(HPAD);
SmartNet
1300-3270
SNA
to
X.25
ter-
minal
PAD
(TPAD);
SmartNet
1500-ASCII
to
X.25
PAD;
SmartNet
5250/T
-async
to
IBM
34/
36/38
via
twinax.
TRANSMISSION RATES: On
the
host
side,
prima-
ry
rates range
from
900
to
19.2K
bps,
while
pri-
mary
rates on
the
terminal
side are
19.2K
bps.
COMPETITION: In protocol conversion
market:
18M, Local Data, Lee
Data/Data
Stream.
In
the
PAD
market: General
Datacomm.
PRICING: Ranges
from
$1,050
for
the
SmartNet
1500
with
one
X.25
link
and one asynchronous
port
to
$9,700
for
any
SmartNet
200
Series model
with
32
asynchronous ports.
REPORT HIGHLIGHTS: PAGE
Product Evaluation
...........................
102
Market
Position
................................
104
SPECIFICATIONS
.................................
105
PRICING ........ ........ .......... .......... ..........
108
PCI's hottest protocol conversion products are the Smart-
Net
Series 200
and
SmartNet 5250/T. All SmartNet (short
for
"smart
networking") protocol converters offer dial-in,
dial-back security; full IBM screen emulation; extensive
fIle
transfer capabilities that are compatible with IBM's
resident host software programs;
and
the most necessary
ingredient, field upgradability. All SmartNet products are
available in desktop
or
rackmountable versions.
The SmartNet 200 converters feature program packs
that
slide into a slot on a basic enclosure.SmartNet 200 offers
network management capabilities
and
security features,
which are generally not available
on
protocol converters.
For
all SmartNet 200 units, an option called SmartLink
lets those using an IBM PC to transfer data
fIles
to
and
from System 34/36/38 computers
and
allocate, delete,
and
rename
fIles
on
the PC's diskette.
Included in the SmartNet 200 line is the SmartNet 251,
an
ASCII-to-SDLC converter that emulates
an
IBM 5251-12
DECEMBER
1987 © 1987 DATAPRO
RESEARCH
CORPORATION,
DELRAN.
NJ
08075
USA
REPRODUCTION
PROHIBITED-FOR
REPRINTS.
CALL 1-800-328-2776
C23-695-102
Protocol Conversion
Systems
PCI SmartNet Protocol Converters
SNA/SDLC cluster controller and allows asynchronous
ASCII devices to access a System 34/36/38. The desktop
unit supports up to eight physical devices and one float-
ing-point logical unit. The SmartNet
251
MSU supports
up to
32
asynchronous devices.
Also in the Smartnet 200 family is the SmartNet 271, an
ASCII-to-bisync converter that provides IBM 3271 con-
troller emulation, permitting the use
of
ASCII peripherals
in a bisync network. The desktop
171
supports up to
seven ASCII devices, allowing them to emulate standard
3270 bisync terminals. The
271
MSU supports up to
32
asynchronous workstations. The SmartNet 276, emulating
an IBM 3274/76 SNA/SDLC Physical Unit Type 2 cluster
controller, supports
18
concurrent IBM Logical Units
(LUs) and
32
user proftles; a separate ASCII port supports
control-console functions. The
276
MSU offers up to
32
asynchronous links.
The SmartNet
5250jT
(twinax) protocol converter pro-
vides a fully compatible twinax interface for connecting
up to seven asynchronous devices to an IBM System/3X
or 5294 cluster controller without additional IBM com-
munications hardware or software. Attached to the host
(or dual hosts) via a standard two-conductor shielded
twinax cable, the 5250/T can be located up to 5,000 feet
from the System 34/36/38 with other twinax workstations
connected upstream sharing the twinax cable. The 5250/T
has 512K bytes
of
memory and supports up to seven serial
async devices and one parallel printer.
It
emulates IBM
5291; 5292-01; 3180-2 displays, and 5256, 5219, and 3812
printers. Like the Smartnet 200 converters, the 5250/T
supports PCl's SmartLink PC
file
transfer option.
While PCI originally specialized in protocol converters,
the company also recognized other industry needs. Prod-
ucts that transmit data from different geographical areas
through either private data communications networks or
public X.25 packet data networks (PDNs) such as Data-
pac, Tymnet, Telenet, Accunet, and Transpac were re-
quired. To
fill
this need, PCI has developed the SmartNet
1000/2000/3000 products. The Series 2000 and 3000
fea-
ture higher end functions, such
as
switching capabilities,
and work with a PC AT -based network management
sys-
tem that controls multiple SmartNet 2000 and 3000 com-
munications processors
in
an
X.25 network. Those
products, the most actively marketed
of
PCI's Packet
As-
sembler/Disassemblers (PADs), will be covered in a sepa-
rate report in the near future. Covered
in
this report is the
SmartNet
1000
family
of
three PADs. Models
1200
and
1300 provide SNA/host or terminal X.25 packet data net-
work access.
The 1200 Host PAD attaches to an IBM host; Model
1300
supports SNA/SDLC controllers. Used in conjunction, the
Model
1200
only accepts calls, while the
1300
both ini-
tiates and accepts calls. The Model
1200
unit, an inte-
grated SNA/SDLC-to-X.25 converter and PAD, is used in
place
of
IBM's Network Packet Switching Interface
(NPSI) front-end software and converts messages from the
host into X.25 packets, which are sent via a virtual path
through the X.25 network. The
1200
maintains up to eight
virtual circuits through the X.25 network.
It
presents data
to its SDLC host by appearing to the host as one or more
3274/6 control units communicating over a point-to-point
or
multipoint line.
The 1300 Terminal PAD, designed to interface with SNA/
SDLC terminal controllers, lets attached SDLC cluster
controllers communicate with up to three SDLC hosts
through an X.25 network. Each
1300
supports up to three
IBM 3274/6-type controllers in a multidrop configuration.
The
1300
maintains a virtual circuit through the X.25
network to a companion SmartNet 1200 HPAD at each
host site. The 1200 presents the data to its host from the
SDLC controller.s connected via the 1300s as
if
they were
attached on a point-to-point multipoint line.
(See
Figure
1.)
The third product in the
1000
Series is the SmartNet 1500.
Unlike the SNA-to-X.25
1200
and
1300,
this unit is a
basic asynchronous PAD that connects asynchronous de-
vices to X.25 networks and performs the opposite conver-
sion as
well.
The unit is available in one-, three-, five-, or
seven-asynchronous port versions, all
of
which support
one X.25 link. The unit is best used to connect PC users
and remote offices to PDNs.
It
is fully compatible with
SmartNet 2000 and 3000 networking products and sup-
ports X.3, X.28, X.29, X.121, and X.25 CCITT Recom-
mendations. The unit may accept or reject incoming calls
with reverse charging.
PCI's SmartNet customers include Fortune
1000
compa-
nies, small-end users, original equipment manufacturers,
value-added resellers, and value-added distributors. The
products currently address the following markets: finan-
cial, insurance, manufacturing, government, communica-
tions, transportation, medical, education, small business,
and automotive.
PRODUCT EVALUATION
PCI offers a broad line
of
conversion products and
is,
therefore,
an
excellent source for prospective buyers
whose needs are specialized or varied.
As
one
of
the first
companies in the protocol conversion market, PCI is
ex-
perienced in researching and developing conversion tech-
nologies, which can be tricky and difficult to implement.
One
of
the company's strongest advantages is its estab-
lished position in a marketplace ftlled with relative new-
comers.
With the SmartNet Series, PCI entered the wide area
networking market, which
is
now far more volatile than
the protocol converter market. Several large data commu-
nications equipment vendors, such as Memotec, are en-
trenched
in
the PAD market,
and
PCI
faces
stiff
competition in selling these products. PCl's Series
1000
© 1987 DATA
PRO
RESEARCH
CORPORATION,
DELRAN.
NJ
08075
USA
REPRODUCTION
PROHIBITED-FOR
REPRINTS,
CALL 1-800-328-2776
DECEMBER
1987
(
C23-695-103
Protocol Conversion
Systems
PCI SmartNet Protocol Converters
IBM
MAllifRAME
HOST
37X5
SNA
3270/3770
SMARTIIET
1200
X
25
....
I'IE
SNRnET
1200
5250
SNA
IBM
SYSTEM
34/36/38
)(
25
IBM
3214
SMARTIIET
1300
X.2~
SMART
In
1300
SOLC SOLC
IBI'I
52941
5250
IBM
3274
PCI
276
ASYNC
Figure
1.
Shown above is a typical application using the SmartNet Series 1000 units
and
the SmartNet 276. Also in the network is
the SmartNet 2600, a switching Packet Assembler/Disassembler (PAD) that provides asynchronous-to-X.25 protocol conversion.
units are unique in that they allow ASCII or SNA/SDLC
devices to communicate through the X.25 network with
IBM SDLC hosts. PCI sources say that it is the richness
of
features and functionality that makes the SmartNet prod-
ucts competitive with the larger companies' offerings.
Those contemplating the use
of
PCI converters should
note that different models handle different conversion
requirements. This can pose a problem for networks that
use several different protocols simultaneously. A
few
con-
version systems provide line concentration and multiple
protocol capability, whereby several different types
of
em-
ulations are available on software modules loaded from
an IBM host to the converter. In some cases, it is cheaper
to install a multiprotocol converter than a variety
of
con-
verters, each handling a separate emulation. The major
disadvantage
of
installing a multiconversion unit, how-
ever, is the extensive host-based programming involved in
defining parameters for its operation. There are trade-offs
in installing a multiprotocol converter instead
of
a variety
of
different units, and users need to analyze network re-
quirements carefully in terms
of
both types
of
products.
An
area in which PCI can improve its field service, which
users have complained in the past. PCI is aware
of
the
service problem, and since Telematics acquired the com-
pany, improving service is being emphasized. The com-
pany has expanded both its customer support
and
its
DECEMBER
1987 © 1987 DATAPRO
RESEARCH
CORPORATION,
DELRAN,
NJ
08075
USA
REPRODUCTION
PROHIBITED-FOR
REPRINTS,
CALL
1-800-328-2776
C23-695-104
Protocol Conversion
Systems
PCI
SmartNetProtocol
Converters
expanded hardware/software development
and
is trying
to
respond quicker to customer problems.
MARKET POSITION
According to a Computer Intelligence Corporation survey
of
the installed base
of
protocol converters
at
IBM/PCM
mainframe sites, PCI is one
of
the
top
vendors, holding 27
percent
of
the market. PCI was stronger
in
the early 1980s
when the market was hot, with predictions
that
1983 rev-
enues would double
in
1984. That, however, was
not
the
case. Sales have eroded
and
all the major protocol con-
verter vendors felt the pinch. Strong competition also
threatens PCI's secure position in the protocol conversion
market. IBM poses the biggest challenge to all protocol
conversion manufacturers, because most conversions in-
volve the IBM network. Users
of
IBM mainframes and
older bisync equipment can now have a one-vendor solu-
tion when purchasing protocol converters.
PCI is unique
in
that
it
is one
of
the
few
vendors that
specialize
in
a particular data communications technol-
ogy. The company researched
and
developed protocol
conversion technology since 1980, when only Industrial
Computer Controls, Inc. (later purchased by Micom) of-
fered significant competition.
It
is this experience that
marks PCI's strongest competitive advantage. Although
PCI now faces competition from a growing number
of
vendors, the company has the largest base
of
converters
today,
and
it
offers the broadest line
of
converters avail-
able from one source. Since being aligned with Telematics,
PCI has branched out into the X.25 equipment market,
where there is much activity and profit potential. PCI is
positioned well
in
the X.25 equipment market, which is a
natural extension
of
the company's existing product line.
To
strengthen its financial position, PCI has aggressively
sought agreements with other companies
to
distribute,
OEM,
or
sell PCI converters under private labels. The
The 5250/T provides asynchro-
nous-to-IBM System 34/36/38
conversion
via
twinax
cable.
The
unit emulates the
IBM
3180,5219,
525, 5291, or 5292 display
sta-
tions.
acquisition by Telematics has already strengthened the
company's marketing efforts. Telematics recently an-
nounced that for the first nine months
of
1987, revenues
were $29.4 million, as compared
to
$15.5 million during
the same period
in
1986,
an
increase
of
about 90 percent.
According
to
John
Pitt, chairman, president,
and
chief
executive officer
of
Telematics, "Although the recent
sharp, general decline in the value
of
equity securities
in
the world's stock markets have been unsettling, Telema-
tics remains a fundamentally sound company with a pos-
itive long-term business outlook."
APPLICATIONS PROFILE
We interviewed two PCI Series 200 protocol converter
users, both
of
whom were impressed with the products'
performance, ease
of
use,
and
reliability.
The first person interviewed is an employee
in
one
of
the
top
12
banks in the United States who was directly in-
volved
in
purchasing the product. The bank needed an
async-to-SNA converter with a minimum
of
eight ports
and the capability
to
do protocol conversion for
hard
copy
printing. The protocol converter also
had
to
support local
and
remote reconfiguration
and
an
auto speed-detect
function. After doing a lengthy decision analysis
of
several
protocol converters, including IBM products, she decided
to
purchase PCI's Models 276
and
251
units because they
met most
of
the bank's criteria. The SmartNet Series 200
products were installed
in
the bank's network over a year
ago. The only criteria
that
neither the IBM
nor
PCI con-
verters could meet was the support
of
a response-time
monitoring function. The user said
that
while both ven-
dors claimed their products could support the function,
the units
did
not
do
so
in
a workable manner.
In
evaluat-
ing IBM's products against PCl's, the user said she de-
cided
that
"protocol
conversion
just
wasn't
IBM's
business.
To
get
an
answer
to
my questions was like pull-
ing teeth."
©
1987
DATAPRO
RESEARCH
CORPORATION. DELRAN. NJ
08075
USA
REPRODUCTION PROHIBITED-FOR REPRINTS. CALL
1-800-328-2776
DECEMBER
1987
(
C23·695·105
Protocol Conversion
Systems
PCI SmartNet Protocol Converters
Currently, there are three Model 276s and one Model
251
in
the bank's network, and a third model will be put in at a
remote site in the near future. The units give the company's
employees dial in access to their electronic mail or access to
the network from home. Customers also use the SmartNet
200s for cash-management applications, dialing in through
a PC with Crosstalk software. The SmartNets support
about 200 users, although not simultaneously.
The user has experienced no hardware problems since the
units were installed. She called them "super reliable," but
said that the setup wasn't easy, since the operator's man-
ual didn't reflect the firmware release she had. She as-
sumed the problem came from the fact that PCI
was
in the
process
of
rewriting the documentation to address the
newer firmware.
Commenting on technical support, the interviewee said
that PCl's technical support staff has only a
few
excellent
people, but such a situation is to be expected, since PCI is
a small company. However, response time on calls has
always been good, with a callback time ranging between
30
and
45
minutes from the time a call for assistance is
placed.
She said SmartNet 200 protocol converters are easy to use
because they are flexible, reliable, easy to configure, and
menu driven. Also, the units are "security conscious";
those with privileged access always get a fixed terminal
identification, eliminating the need to dedicate ports to
priority users.
"Based on our lengthy evaluation, I
feel
pretty confident
that
we
went with about the best [protocol converter] out
there.
We
are really happy with them.
We
wouldn't be
expanding
if
we
weren't. PCI just needs to beef up its
technical support," she concluded.
The second user, who works for a data processing (DP)
service facility, said he agreed that PC's converters are
reliable products. "They're very straightforward and we've
had no problems with them." His company has used PCI
products since August
1984.
"Back then," the user told us,
"they were the only ones on the market to handle gra-
phics," the main application for which they were pur-
chased. Having had good experiences with the 1076
models, the company purchased three 8-port SmartNet
276s about a year
ago,
also for graphics applications. Cur-
rently, approximately
100
ditTerent users dial into the
DP
service, with a
few
dozen using the SmartNet 276 simul-
taneously.
He noted that the products "don't just install themselves;
you have to read the documentation. Earlier, the docu-
mentation
was
sketchy, but, since the spring
of
1986, it's
been very accurate." The user said that since the installa-
tion, he hasn't had one problem with the 276. "Early
versions like the 1076 had quirks," he said,
but
he
couldn't think
of
one Model 276 weakness.
The user rated company's service "acceptable." He com-
mented, "During the purchase by Telematics, customer
service went downhill, but since then, the service has been
just fine."
In
a final evaluation
of
the SmartNet 276, the user said
that PCI's graphics development and support are very
strong.
"I'm
very happy with its reliability, and
it
gets the
job done, which other boxes may not do. KMW and Local
Data have boxes that appear to do graphics, but once
we
were shown that PCI can do the job,
we
haven't looked at
anything else."
SPECIFICA
TIONS
MODELS: SmartNet Series
200-Models
251, 271,
and
276; SmartNet Series
1000-Models
1200, 1300, and
1500;
and SmartNet 5250/T.
DATE
OF
ANNOUNCEMENT: SmartNet Series
200-
March
1985;
SmartNet
1200
and
1300
and SmartNet 5250/
T-March
1987;
SmartNet 1500-February
1987.
DATE
OF
FIRST DELIVERY: SmartNet Series
200-
March
1985;
SmartNet
1200,
1300,
and
1500
and Smart-
Net
5250/T-March
1987.
NUMBER DELIVERED
TO
DATE: SmartNet Series
00-7,000;
SmartNet Series
1000-853;
SmartNet 5250/
T-780.
SERVICED
BY:
PCI, Incorporated.
MODELS
SmartNet Series 200 protocol converters allow for the
connectivity
of
asynchronous terminals, PCs, and printers
with IBM 370 and System 34/36/38 host computers.
Models within the series include the following:
• SmartNet 2S1: a protocol converter supporting ASCII-
to-SNA/SDLC conversion, allowing ASCII terminals,
printers, and IBM PCs to attach to IBM System/3X as
5251-11
displays and 5256-3 printers.
• SmartNet 271: a protocol converter supporting ASCII-
to-bisync conversion, allowing ASCII terminals, print-
ers,and
IBM PCs to attach to IBM SNA networks as
3277
or
3278
terminals; the
271
emulates the IBM
3271
or
3274 controller. The
271
performs all the functions
of
the SmartNet
276
(listed below), but is used with bisyn-
chronous hosts.
• SmartNet 276: a protocol converter supporting ASCII-
to-SNA/SDLC conversion,allowing ASCII CRTs, print-
DECEMBER
1987 © 1987
DATAPRO
RESEARCH
CORPORATION.
DELRAN.
NJ
08075 USA
REPRODUCTION
PROHIBITED-FOR
REPRINTS.
CALL
1·800·328·2776
C23-695-106
Protocol. Conversion
Systems
PCI·
SmartNet Protocol Converters
i The SmartNet 1200 is an SNA Host Packet Assembler/
'Disassembler
(HPAD)
that converts an SNA/SDLC data-
Istream
to
CCITT
X.25 for transmission
across
a Packet Data
Network.
An
application
of
the unit can be seen in Figure
1.
ers,
and
IBM PCs
to
attach to IBM SNA networks
appearing
to
the host as 3278 displays
and
3287 printers;
the 276 appears to the host as
an
IBM 3274/36 cluster
controller.
SmartNet Series 1000 products provide asynchronous
and
SNA/SDLC-to-X.25 connectivity. Models 1200
and
1300
differ from the 1500
in
that they perform
not
only the
basic packet assembling/disassembling function,
but
also
protocol conversion. The three models within the series
are listed below.
• SmartNet 1200:
an
SNA Host PAD that interfaces
an
IBM mainframe
or
minicomputer to
an
X.25 PDN. The
unit supports X.25-to-3270 conversions, eQ1ulating
an
IBM 3274/76 controller.
• SmartNet 1300:
an
SNA Terminal PAD (TPAD) that
interfaces SNA/SDLC terminal controllers, SmartNet
276 ASCII/3270,
and
SmartNet
251
ASCII/5250 SNA
protocol converters
to
an
X.25 PDN. The unit supports
3270 SNA-to-X.25 conversion, emulating
an
IBM 3278
Model 2 display station.
• SmartNet 1500: a basic PAD that connects PCs
and
small, remote offices
to
PDNs. The unit can be config-
ured as a host
or
terminal concentrator.
SmartNet 5250jT, the last model covered
in
this report, is
a protocol converter supporting ASCII-to-EBCDIC con-
version, allowing asynchronous ASCII devices
to
directly
attach to the twinax ports
of
the IBM System 34/36/38
minicomputers
or
the 5294 cluster controller. The 5250/T
emulates the IBM 3180, 5219, 5256, 5291,
or
5292 display
stations.
TRANSMISSION SPEOFICATIONS
The SmartNet Series 200 protocol converters each sup-
port
32
RS-232-C ports, configurable as
Data
Terminal
Equipm:ent (DTE)
or
Data
Circuit-Terminating Equip-
ment
(DeE),. for the connection
of
up
to 32 ASCII de-
vices.
The
protocol converters are
compatible
with
SmartNet PADs, switches,
and
switching PADs for X.25
communications
and
support PC file transfer through
SmartLink software, which· allows secure PC-to-main-
frame communications at a maximum transmission rate
of
19.2K bps. SmartLink can be used with the Series 200
units, as well as the 5250/T.
In
addition
to
SmartLink
software, information users can transfer between a PC
and
an
IBM host through VM/CMS, TSO, and CICS. PCs can
also transfer files
to
and
from
the
System 34/36/38
through a System/3X Emulator Transfer Utility. Emu-
lated terminals include the IBM 3278, IBM 5251,
and
Digital Equipment Corporation VT100, among others.
Se-
ries 200 units support a total
of
45 common terminal
types.
On
the host side, SmartNet Series 200 units support syn-
chronous point-to-point, multipoint,
and
direct connec-
tions
in
half-
or
full-duplex mode.
On
the terminal side,
direct, dial-up asynchronous connections are supported
with full-duplex transmission; flow control is X-on/X-off.
Other features common to all Series 200 protocol conver-
sion units include line concentration, modem auto call-
back, auto logon,
an
auto dial directory, full four-color
support,
and
the appending
of
files.
The SmartNet 251 supports 4
to
32
ASCII terminals and
printers attached directly
to
the System/3X through a
communications adapter
or
remotely via a synchronous
modem
on
a multidrop SNA/SDLC line with controllers.
Terminal side data rates range from 300
to
19.2K bps.
The
SmartNet
251
supports one 19.2K bps SDLC link
into the IBM System 34/36/38 host through
an
RS-232-C
interface.
The
251
supports most asynchronous displays, including
the IBM 3101, Digital Equipment VTloo/VT52, Lear Sie-
gler, ADDS Viewpoint, Televideo,
and
Hewlett-Packard
(HP)
2621
AlP.
The SmartNet
271
supports any combination
of
ASCII
terminals, PCs,
and
serial printers attached directly
or
remotely
to
an
IBM 3705
or
3725 via a synchronous
modem
on
a multidrop bisync line with other controllers.
The
271
supports 4 to 32 physical ports
and
8
to
64
concurrent Logical
Unit
(LU) sessions; data rates
on
the
terminal side
of
the unit range from 300
to
19.2K bps. The
SmartNet
271
also supports one 9600 bps bisync link to
the host and one RS-232-C interface.
The
271
supports the following asynchronous displays: the
IBM 3101, Digital Equipment VT100, Lear Siegler, ADDS
Viewpoint,
Data
General D2oo, Freedom 100/50, Hazel-
tine 1420/1500/1510,
HP
2621,
and
Televideo. Devices
that
would otherwise connect through the IBM Network
Terminal Option (NTO) licensed program running
on
an
IBM 3705
or
3725 can communicate through the 271. The
©
1987·
OAT
APRO
RESEARCH
CORPORATION.
DELRAN.
NJ 08015
USA
REPRODUCTION
PROHIBITED--FOR
REPRINTS
..
CALL 1-800-328-2176
DECEMBER
1987
(
f
C23-695-107
Protocol Conversion
Systems
PCI
SmartNet
Protocol Converters
271
also supports IBM PCs
and
compatible units through
SmartLink communications software. A graphics mode
allows the SmartNet
271
to
support graphics
on
most
ASCII terminals
and
plotters. Graphics applications that
can
be
accessed include SAS/GRAPH, PLOT-l 0, DIS-
SPLA,
and
TELL-AGRAPH, DI-3000. Other features
of
the
271
include a data transparency mode (protocol envel-
oping)
and
auto logoff.
The
SmartNet 276 simultaneously supports any combina-
tion
of
4
to
32 ASCII terminals/PCs
and
serial printers
attached directly
or
remotely via
an
asynchronous mo-
dem. The 276 can
run
four
to
eight
LU
sessions simulta-
neously. Both the terminal side
and
host side support
data
rates ranging from 300
to
19.2K bps.
On
the host side, the
276 attaches either directly
to
the IBM 37X5
or
remotely
through modems
on
a single multidrop SNA/SDLC line
with other controllers. As
on
the SmartNets
251
and
271,
the host-side connection is through
an
RS-232-C interface.
Asynchronous displays
and
graphics mode capabilities are
the same as listed above for the SmartNet 271. As with the
SmartNet 271, devices
that
would otherwise connect
to
the host through the IBM Network Terminal
Option
(NTO) licensed program running
on
an
IBM 3705
or
3725
can communicate through the 271.
The
271's other fea-
tures include a data transparency mode,
auto
logoff, a
four-level security feature, a system password,
and
host
control
of
DTR
to external dial-up modems.
All SmartNet Series
tOOO
units support point-to-point
or
multipoint connections.
The SmartNet 1200, designed as
an
alternative
to
IBM's
NPSI software
on
the host end, interfaces
to
a SmartNet
1300
to
convert SNA/SDLC datastreams
to
X.25 for
transmission across a PDN.
The
unit
also interfaces
to
an
IBM System 34/36/38 host, supporting remote access
to
IBM 5250/5294 clusters.
The
1200 only accepts calls.
The 1200 Host PAD supports as many as eight leased
or
switched virtual circuits
and
can
be
directly connected
or
attached via a modem to the host.
The
unit supports
SNA/SDLC
and
X.25 link speeds
up
to
9600 bps. Model
1200 concurrently supports one X.25 link, one SNA/
SDLC port,
and
one asynchronous diagnostic port. Smart-
Net 1200 also supports the LAPB protocol.
SmartNet 1300 is a terminal
PAD
that simultaneously
supports IBM 3270, 3770 SNA/SDLC controllers,
the
SmartNet 276 protocol converter, as well as IBM 5294
or
5250 terminal clusters
and
the SmartNet
251
protocol
converter, all for accessing the IBM System 34/36/38
across
an
X.25 PDN.
The
1300 initiates
and
accepts calls.
On
the host side, the 1300 interfaces
to
the SmartNet 1200
or
to NPSI software residing
in
the IBM front end.
The
unit supports as many as three SNA/SDLC PhYsical
Unit
connections, one X.25 link,
and
one asynchronous diag-
nostics port
and
can be direct connected
or
attached via a
modem. The unit is compatible with the SmartNet 2600,
2700,
and
3600 products for SNA terminal cluster-to-X.25
PDN
conversion.
The
SmartNet
1500
is
a
basic
packet
assembler/
disassembler for
PC
users who want
to
connect to PDNs.
The
unit is available
in
one-, three-, five-,
or
seven-asyn-
chronous port models. Each port operates
at
selectable
rates from 300
to
9600 bps. Features include auto call
and
mnemonic call methods, two inactivity timers to control
idle connections,
and
a password-protected configurator
that can
be
accessed through any port.
The
SmartNet 52SO/T connects
up
to
seven asynchronous
terminals, PCs, printers,
and
graphics devices
to
the twinax
port
of
the IBM System 34/36/38. The 5250 supports
45
asynchronous terminals, including the IBM 3161/62/63/
64, Digital Equipment VT100/VT220, Lear Siegler, ADDS
Viewpoint, Televideo,
and
Wyse. Through the 5250/T,
asynchronous printers can emulate IBM 5256, 5219,
and
3812 printers, which connect directly to the 5250/T
or
through the auxiliary port
of
an
asynchronous display
or
PC. Through software, users can select to have either
RS-232-C or RS-422A ports.
The
5250/T also has a cable-through feature when the unit
is the last twinax drop
in
a multidrop environment. Ca-
ble-through means
that
the cabling can
run
through the
actual protocol converter itself.
DEVICE CONTROL
An operator configures PCI SmartNet Series 200 convert-
ers through a menu-driven configurator.
To
install the
units, the user
must
configure the synchronous port
and
asynchronous ports. Examples
of
the functions
that
must
be set
on
the host side
of
the converter include whether
the
unit
will connect
to
the host directly
or
via the mo-
dem; the polling address; unit operating speed;
and
the
presence
or
absence
of
Non-Return-to-Zero-Inverted
(NRZI).
In
contrast
to
other protocol converters, external
strapping allows the user
to
connect devices
and/or
mo-
dems
to
individual parts using standard cables without
using cross-cables.
The
asynchronous ports are configured for the following:
whether the ASCII terminal connects directly to the con-
verter
or
to a modem
or
modem sharing
unit
(MSU);
which
of
the ports are assigned to CRTs;
CRT
brand
(over
300 different models are supported by PCI); speed for
each port; auto speed selection; which ports are assigned
to
printers; printer speeds;
and
whether the dynamic
printer port is used,
and
by which CRT.
The
synchronous
ports are configured for SDLC
and/or
bisync address;
number
of
devices connected (e.g.,
up
to 32 Logical Units,
converted
to
one SNA Physical
Unit
Type 2);
and
SNA/
SDLC timeout.
DECEMBER
1987 @ 1987
DATAPRO
RESEARCH
CORPORATION.
DELRAN.
NJ
08075 USA
REPRODUCTION
PROHIBITED-FOR
REPRINTS.
CALL
1-800-328-2776
·
P.CI
Smat1:NltProtocol Converters
Upon
receiving PQwer,.all Series
~OO
protocol
convert~rs
testin~emal
components.
In:
addition,
slIPCI
u:nitshave
buiIt~in
di~ostic
line monitors
and
integhttedtrace ca-'
pabilities. ' Di!ignostic test sequences activated by keyboard
command
include the following: display
of
switch settings;
ASCII line test; monitor
of
SOLC address
PQlIing;
<fisplay
of
SOLC aiddress
and
control bytes; display
of
SOLC
status;
and
SNA
traciilg
of
data
at
the port where the test
is
executed~
Test
resu:Its
are displayed
on
a
CRT
and/ot
printer
attach~
to
the converter. A special' port monitors
the converter itsel£ .
To
instaIla
Series 200 converter, the user simply inserts a
program pack into a PCI enclosure, which has front':'panel
LEOs for monitoring power, system operation, carrier de-
tection, reception,
and
transmission. Users control the
Series 200 converters through a terminal connected to a
command port. Using setup mode,
an
operator can con-
figure
up
to
32
user profiles, which contain information
about a terminal's connection
to
the network. Setup mode
allows creation
and
storage
of
auto
logon/logoff se-
quences.
In
addition,
an
operatot can configure all Series 200asyn-
chronous channels for non-IBM asynchronous host ac-
cess, allowing
terminals
to
switch between
an
IBM
mainframe
and
asynchronous host
or
the X.25 network
and
an
auto dial modem. Users can monitor the status
of
both asynchronous
and
synchronous . lines through any
terminal con.nected
io
a Series 200 converter. Additional
diagnostics features aIlow the convei1:ersto display both
the address
and
control bytes
of
the SOLC line.
All SmartNet 200 models provide four levels
of
password
security: Level 1 creates
and
stores
up
to
32 individual
passwords
in
nonvolatile memory; Level 2 allows the net-
work. manager
to
establish predefined session paths to
ensure authorized application connections; Level 3 pro-
vides auto callback security;
and
Level 4 limits the distri-
bution
of
passwords and user· identifications through
an
automatic logon/logoff.
Through a Series 200 dynamic spooling feature, a personal
computer communicates with an IBM host as a
CRT
or
printer, letting users address and send output
to
more
thaIi one device
at
a time. The Series 200 converters are
compatible with IBM mainframe file upload
and
down-
load facilities, allowing personal computer users to share
data between applications
and
host databases. Through a
software. option available
on
the 251, a personal computer
attachCd
lothe
converter can transfer data flIes
to
and
froin a System 34/36/38
and
allocate, delete,
and
rename
files
on
the PC's diskette.
On
SmartNet
1200 and 1300 units the following selections
must
be conflgured for
the
X.25 link: first logical channel
number, Packet .window,
packet
length, frame timeout,
and. packet-level timeout.
Asynchronous~side
settings in-
chide.
those'
for direct
or
modem connection
and
auto
speed detection.
Users can monitor X.25 packets
and
frames
and
access
information, such as SOLC status
and
SOLC address
and
control bytes, through an ASCII terminal. An asynchro-
nous control port handles integral diagnostic tests.
The SmartNet 5250/T, which supports X-on/X-off and
DTR
flow control, is set up
in
minutes for on-line opera-
tion through factory default parameters. Users can other-
wise
reconfigure
the
protocol
converter
through
full-screen configuration menus accessible from any port.
The 5250/T provides realtime updates even while the unit
is on-line. Configuration parameters are stored
in
nonvol-
atile memory.
Basic Assurance Tests that check the processors, the mem-
ory,
and
the input/output circuitry are automatically in-
voked
at
power on
or
can
be
run when requested by an
attached terminal user. Front-panel LEDs indicate faults
detected by the diagnostics. Users can also access compre-
hensive statistics for the twinax link and the asynchronous
ports.
PRICING
Shown below are the low- and high-end prices
of
each
SmartNet product. Users can purchase PCI products di-
rectly, through manufacturer representatives,
or
through
distributors within the United States. International dis-
tributors are located
in
Canada, South America, Europe,
the Middle East, Asia, and Australia.
EQUIPMENT PRICES
Models
SmartNet
251 (ASCII
to
IBM
System
34/36/
38)
SmartNet
271 (ASCII
to
Bisync)
SmartNet
276
(ASCII
to
3270
SNA/SDLC)
4 asynchronous ports
32
asynchronous ports
SmartNet
1200
Host PAD (SNA/SDLC
to
X.25) 1
X.25
link. 1 SNA/SDLC
port
SmartNet
1300
Terminal PAD (SNA/SDLC
to
X.25) 1
X.25
link. 3 SNA/SDLC ports
SmartNet
1500
(Async
to
X.25
PAD)
1
X.25
link. 1 async
port
1
X.25
link. 7 async ports
SmartNet
5250/T
(ASCII
to
IBM
System
34/
36/38
Twinax)
7 asynchronous ports
SmartUnk
PC
File Transfer communications
software
*Quantity
-of
one.
0
Purch.
Price*
($)
3.550
9.700
3.200
3.200
1.050
1.550
2.595
195
@
1.981
DATAPRO
RESEARCH
CORPORATION.
DELRAN.
NJ
08015
USA
REPRQD,UCTION
PflOHI.BITEI}-FOR
REPRINTS.
CALl, 1-800-328-2776
DECEMBER
1987
