Racal Vadic_18008 049_VA811_Automatic_Calling_Unit_Installation_Operation_Manual_May1985 Vadic 18008 049 VA811 Automatic Calling Unit Installation Operation Manual May1985

User Manual: Racal-Vadic_18008-049_VA811_Automatic_Calling_Unit_Installation_Operation_Manual_May1985

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Racal-Vadic

VA811 AUTOMATIC CALLING

UNIT

INSTALLATION/OPERATION

MANUAL

ml3~m[J

The

Electronics

Group

Publication

Number

18008-049

VA811 AUTOMATIC CALLING

UNIT

INSTALLATION/OPERATION

MANUAL

REPRINTED

MAY

1985

Racal-Vadic offers afree, call-in diagnostic service to assist

in

the operation

and

testing of all Racal-Vadic

products. Racal-Vadic Diagnostic Center personnel are available to perform free, over-the-telephone diagnostic "

tests of malfunctioning equipment, to clarify options

and

test procedures

outlined

in

this manual,

and

to describe the operation

of

the

controls

and

indicators

on

Racal-Vadic products. Call the Racal-Vadic

Diagnostic Center before shipping any

equipment

in for repair.

TOLL-FREE

NUMBER

(800)

22-VADIC

or

(800) 228-2342

When using this

product

outside the continental

U.S.

or

Canada, please call your local distributor regard-

ing any problems.

The information

in

this

manual

has

been

carefully compiled

and

checked for technical accuracy. However,

Racal-Vadic accepts no responsibility for inaccuracies

which

may occur.

Comments

or

correspondence

regarding this

manual

should

be

addressed to:

Racal-Vadic

Corporate Communications

Department

1525

McCarthy Boulevard

Milpitas, California

95035

U.S.A.

Tel.

(408)

946-2227

TWX:

4112-62782187

Copyright ©

1985

by Racal-Vadic

FCC REQUIREMENTS

Connection of

terminal

equipment

to

the

public switched-telephone

network

is regulated

by

the

Federal

Communications

Commission

(FCC)

as defined by

FCC

Rules

and

Regulations, Part 68.

These

regulations

require

the

following:

1. Before

connecting

this

equipment

to

the

switched-telephone network,1notify

the

telephone

company

of

the

following information:

Name of

Manufacturer

RACAL-VADIC

Equipment

Model

Number.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

VA811-PS/SS

FCC Registration

Number

AJ496M-68137-DI-E

Ringer Equivalence

Number

O.OB

If

other

devices are to be

connected

with

this equipment, equivalent

information

must

be

provided

for

each device.

2.

When

trouble

is

experienced,

disconnect

this

equipment

from

the

telephone

line

to

determine

if it is

malfunctioning.

If

this

equipment

is

determined

to be malfunctioning,

discontinue

use

until

the

problem

has

been

corrected.2

3.

Where

such

action

is reasonably required

in

the operation of its business,

the

telephone

company

~

may make changes

in

its

communications

facilities, equipment, operations,

and

procedures.

If

this

occurs,

you

will

be notifed

by

the

telephone

company

in

writing.

1Connection of this

equipment

to party lines

and

coin

telephone

service is prohibited.

2

Should

this

equipment

cause

harm

to the telephone network,

the

telephone

company

may

temporarily

discontinue

service

until

the

problem

has been corrected.

WARNING

This

equipment

generates, uses,

and

can

radiate radio frequency energy and, if

not

installed

and

used

in

accordance

with

the instructions manual, may cause interference to radio communications. It has been

tested

and

found to comply

with

the limits for aClass A

computing

device

pursuant

to

Subpart

Jof Part

15 of FCC Rules,

which

are

designed

to provide reasonable

protection

against

such

interference

when

operated in a

commercial

environment.

Operation

ofthis

equipment

in aresidential

area

is likely to cause

interference;

the

user

will be

required

to take whatever

measures

may be

required

at his

own

expense

to

correct

the interference.

/~

CANADIAN

DEPARTMENT

OF

COMMUNICATIONS

REQUIREMENTS

FOR

END USERS

This equipment is certified by

the

Canadian

Department of Communications, meeting telecommunica-

tions requirements for safety, operation,

and

telephone network protection.

The

Department

does not

guarantee satisfactory

equipment

operation. When installing this equipment:

1.

Be

sure your local telecommunications company allows you to

connect

your

equipment

to its lines.

2. Use approved connectors. Most companies prohibit using customer-supplied jacks. If using asingle

line, you may be able to use atelephone extension cord.

3.

Electrical ground connections for the power utility lines, telephone lines,

and

internal metallic water

pipes are connected together, particularly

in

rural areas.

DO

NOT ATTEMPT TO MAKE GROUND

CONNECTIONS YOURSELF. Contact

the

appropriate electrical inspection authority

or

electrician.

4.

Any equipment malfunctions,

or

repairs or alterations you make to this equipment, may cause the

telecommunications company to ask you to disconnect the equipment. All repairs to this equipment

should be made by

an

authorized

Canadian

maintenance facility designated by the suppliers.

NOTE: Compliance with the above conditions may not prevent degradation of services

in

some situations.

~.

,.

...

~!.~"

The

Canadian

Department of Communications requires the certification of all cables

used

to connect

modems to the telephone line. The following cables are certified for use

on

the

VA811

Automatic Calling

Unit:

~

Cable

Description

7-foot permissive

7-foot programmable

Racal-Vadic

Part

No.

15047-004

15048-004

Canadian

DOC No.

CAllA

CA45A

SECTION 1

SECTION

2

SECTION 3

SECTION

4

SECTION

5

TABLE

OF

CONTENTS

GENERAL

INFORMATION

1-1

INTRODUCTION

1-1

FEATURES

1-1

CABLE

INFORMATION

1-1

PHYSICAL

DESCRIPTION

1-2

CONFIGURATIONS

1-2

Single-line

1-2

Multiline

1-4

OPTIONS

2-1

INTRODUCTION

2-1

OPTION

DESCRIPTIONS

2-1

Single-line/Multiline

Options

2-1

Interconnect

Options

2-2

Operating

Protocol

Options

2-2

INSTALLATION

3-1

INTRODUCTION

3-1

PRELIMINARY

PROCEDURES

3-1

Unpacking

and

Inspection

3-1

Equipment

Supplied

3-2

Additional

Equipment

Required

3-2

Preinstallation

Checks

3-2

VA811-PS/SS INSTALLATION

3-3

VA811-XM INSTALLATION 3-4

CHECKOUT

AND

OPERATION

4-1

INTRODUCTION

4-1

CHARACTER

SET

4-2

EXAMPLE

CALLS

4-4

CONTROLS

AND

INDICATORS 4-4

OPERATIONAL

CHECKOUT

4-6

VA811-PS/SS 4-6

VA811-XM 4-7

SUPPLEMENTAL

INFORMATION

5-1

INTRODUCTION

5-1

EQUIPMENT

INTERFACES

5-1

LINE

INTERFACE

5-2

Introduction

5-2

RS366

INTERFACE

5-4

Introduction

5-4

RS366

Signal

Descriptions

5-4

RS366

Protocol

5-7

CHASSIS

INTERFACE

5-8

SPECIFICATIONS

5-11

v

Table 2-1

Table 3-1

Table

3-2

Table 4-1

Table 4-2

Table 4-3

Table

4-4

Table 5-1

Table 5-2

Table 5-3

Table

5-4

Table 5-5

Table

5-6

Table

5-7

LIST

OF

TABLES

VA8110ptions

.

Equipment

Supplied

.

Additional

Equipment

Required .

Telephone Digits .

Dialer Address/Modem Type .

Modem

(Slot) Address .

Controls

and

Indicators .

RJllC

Connector

Pin

Assignments .

RJ41S,45S Connector

Pin

Assignments .

TelCo Interface Signal Definitions .

RS366 Interface Connector

(J5)

.

RS366 Interface Dial Sequence .

RS366 Interface Address Sequence

(MACS

only) .

Edge Connector

Pin

Assignments (Pi) .

vi

2-4

3-2

3-2

4-2

4-3

4-3

4-5

5-2

5-3

5-3

5-6

~

5-7

5-8

5-9

Figure

1-1

Figure

1-2

Figure

1-3

Figure 2-1

Figure

3-1

Figure

3-2

Figure 4-1

Figure

5-1

LIST OF FIGURES

Basic Single-line Dialer Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

1-2

Single-line Dialer

with

VA831

Adapter.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

1-3

Multiline

Dialer (MACS) Configuration. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

1-4

VA811

Switch

and

Strap Locations. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

2-4

VA811-PS/SS (SLD)

Connections.

...................................

..

3-3

VA811-XM (MACS) Connections 3-4

Diagnostic Display

Indicators.

. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

4-5

RS366 Interface Signals. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .

..

5-4

vii

INTRODUCTION

FEATURES

Section 1

GENERAL INFORMATION

The

VA811

Automatic Calling

Unit

is a

single-line/multiline

automatic

dialer

that

allows a

computer

to

initiate

calls

through

an

RS366 interface

(or

through

a

standard

RS232C interface

when

the

VA831

adapter

is

used).

The

VA811, available

in

three

basic

configurations

listed

below,

replaces

both

Bell 801

and

RACAL-VADIC VA821 ACUs:

•VA811-PS single-line

version

supplied

with

a

P-type

(permissive

direct-connect) cable.

•VA811-SS single-line version

supplied

with

an

S-type

(programmable

direct-connect) cable.

•VA811-XM

multiline

version for

use

in

the

RACAL-VADIC

Multiline

Automatic

Calling System (MACS).

The

VA811

provides

many

standard

and

optional

features

that

allow

custom

tailoring to fit

the

needs

of a

particular

installation.

Features

available

on

this

unit

include:

•

Switched-network

(DDD)

and

teletype

(TWX)

compatible

•

Automatic

selection of

pulse

or

tone

dialing

•Positive dial tone,

answer

tone,

and

busy

signal

detection

•Tandem-dial

and

blind-dial

capability

•Selectable automatic call

and

retry

(ACR)

control

•End-of-number

and

invalid-digit

detect

options

•Compatible

with

RACAL-VADIC

direct-connect series

modems,

MACS,

and

single-line chassis

•Extensive

user

diagnostics

capability

The

following cable

has

been

certified for

use

with

this dialer.

CABLE

INFORMATION

Racal-Vadic Part

Number

Government

of

Canada

DOC Old

Connector

Code

DOC New

Connector

Code

(U

se this code

and

the

part

number

for any

communications

or

ordering

information

from

Racal-Vadic.)

Description:

1-1

15047-004

H473185

CAllA

7ft

(P

type)

6

position

modular

(voice

or

data-perm)

T,

R

PHYSICAL

DESCRIPTION

CONFIGURATIONS

Single-line

The

VA811

dialer consists of a

single-width

printed

circuit

board

(PCB)

assembly

that

occupies

one

card

slot

in

RACAL-VADIC VA1601-,

VA1616

...

,or VA1680-series chassis.

The

dialer

accepts

dc

power

and

interfaces to

the

chassis controls

and

indicators

via

the

standard

card-

edge

connector

located at

one

end

of

the

PCB. A

25-pin

female

connector

mounted

on

the

rear

panel

of

the

unit

provides

an

EIA RS366

connection

to

the

computer

(data

terminal

equipment)

and

a

corresponding

25-pin

male

connector

provides buffered

expansion

capability

(daisy-chain) for

up

to

three

additional

dialers (in aMACS system). Two

miniature

8-

position

telephone

(TelCo) jacks

provide

line

connection

to

the

modem

and

to

the

sWitched-telephone

network

for

single-line

application.

The

VA811

dialer will operate as

either

asingle-line (SLD)

or

a

multiline

(MACS) dialer,

depending

on

the

internal

option

settings

selected

at

the

factory (per dialer

type

ordered). Typical SLD

and

MACS

equipment

configurations are

discussed

below.

The

minimum

equipment

configuration

necessary

for single-line opera-

tion

is

shown

in

Figure 1-1. As

indicated

in

the

figure,

the

dialer

connects

to

the

computer

via

an

RS366 interface

and

connects

directly

to

the

telephone

(TelCo) line

with

the

supplied

cable.

The

associated

modem

connects

to

the

computer

via

an

RS232C interface

and

connects

to

the

TelCo

line

via

the

dialer. In

this

configuration,

the

dialer

interrupts

the

modem

line

connection

during

the

dial

sequence,

then

transfers

control

to

the

modem

via

the

telephone

line.

COMPUTER

(DTE)

jRS366I1F

RS366

VA8ll

PORT

DIALER

~

RS232C MODEM

~

PORT

......

TELCO

LINE IfF

VA811·02

Figure

1-1.

Basic Single-line

Dialer

Configuration

1-2

If

an

optional VA831 adapter is used,

the

dialer may be

connected

for

either dual- or single-port operation as

shown

in

Figure

1-2.

Modem

line

connection

is identical to that described above,

but

the

VA831 adapter

eliminates

the

need for an

RS366

interface at

the

computer.

COMPUTER

CO

E

IIF

(DTE)

RS232C IIF

RS366I/F

I!

RS232C VA831B

VA8ll

TEL

PORT

ADAPTER

~

DIALER LIN

~

RS232C IIF

RS232C IMODEM

0+---

PORT

••

••

-10...--

-v

CO

E

IIF

•

•

--...-

-I-'

••

RS3661/F

•/•

•-

•RS232C ifF VA831B

VA8ll

TEL

---+

~

•/ADAPTER DIALER LIN

~

RS232C

PORT

MODEM

4--

VA811·0J

Figure

1-2. Single-line

Dialer

with

VA831

Adapter

1-3

Multiline

For

multiline

dialer operation,

the

dialer

and

associated

modems

are

normally connected as

shown

in

Figure 1-3. As

indicated

in

the

figure,

the

dialer connects to the

computer

via

the

VA831

adapter

(or directly to

an

RS366 port, if the adapter is not used)

and

controls

up

to

15

1

modems

via

the

MACS chassis interface. Each

modem

connects

to aseparate

RS232C

port

at the computer,

and

each

modem

connects

directly to the

telephone

line. In this configuration,

the

dialer

can

address

any

of

the

modems

via the chassis interface,

inhibit

the

modem

line

connection,

dial through the modem line interface,

then

transfer

line

control to

the

modem.

ACE

CO

IfF

CO

IfF

•

RS366

IfF

COMPUTER

(DTE)

~

RS232C VA831A VA811

PORT

ADAPTER DIALER

/CHASSIS INTERF

~

MODEM

~

RS232C TEL

PORT

LINE

•

••

••

r-~

•

-I.,...-

-,--,

-~

-I'-"

-I'-'"

••

•----..

MODEM

--...

RS232C TEL

PORT

LINE

VA811-04

Figure 1-3. Multiline

Dialer

(MACS) Configuration

1

When

the

VA811

dialer

and

VA831

adapter

are

installed

in

the

same

chassis, only 14 slots are available for modems. Up to

three

additional

dialers, each controlling

up

to

15

modems,

may

be

daisy-chained

via

the RS366 expansion connector

provided

on

the

VA811.

1-4

,~

,~

'~

INTRODUCTION

OPTION

DESCRIPTIONS

Single-line/

Multiline

Options

Section 2

OPTIONS

The

VA811

dialer may be configured to

meet

the

needs

of a

particular

installation

by selecting

appropriate

hardware

options

on

the

printed

circuit

board

assembly.

Options

typically

changed

onsite

are imple-

mented

with

DIP switches

Al-A8

and

Bl-B8; less

commonly

changed

options

are

implemented

with

solder

straps

(jumpers) a-x.

Figure

2-1

and

Table

2-1

at

the

end

of

this

section

indicate

the

location

and

function

of

switches

and

straps,

and

abrief

description

of

each

option

is

presented

below.

NOTE:

The

VA811

is configured for

"standard"

single-line

or

multiline

operation

when

shipped

from

the

factory, as

indicated

in

Table

2-1. Before installing

the

unit,

it

would

be

prudent

to

read

the

option

descriptions,

mark

Table 2-1

with

the

settings necessary

for

your

installation,

then

verify

the

switch

and

strap

settings

selected

on

the

board.

The

seemingly endless array of

switches

and

straps

used

on

the

VA811

can

be categorized by

function

into

three

basic groups:

•

Those

that

configure

the

dialer

for single-line (SLD) or

multiline

(MACS) operation.

•

Those

that

relate to

interconnecting

the

dialer

to

external

equipment.

•

Those

that

establish

the

operating

protocol of

the

dialer.

Each group of options is described below.

Dialer Type

(Al,

f,

g,

h, j,

k,

1,

s, t, u,

v,

w)-This

option

selects

either

single-line or

multiline

operation

as

indicated

in

Table 2-1.

Dialer

Address

(B7,

B8)-If

more

than

one

dialer

is

used

on

the

same

RS366 interface,

these

two

switches

provide

a

unique

address

for

each

dialer.

When

only

one dialer is

used,

the

switches

should

be

off, selecting

address

O.

2-1

Interconnect

Options

Operating

Protocol

Options

Signal Ground Reference

(p)-

This

option

connects signal

ground

(RS366 interface,

pin

7) to chassis ground

within

the

dialer if required

by the installation.

RS366A Interface (m,

n)-This

option configures

the

dialer for RS366A

connections.

If

enabled, interface pins 18

and

19 (Receive Common,

Send

Common) are connected to signal ground,

and

pin

1(Protective Ground)

is isolated from chassis ground

within

the

dialer.

If

disabled,

standard

RS366 connections are selected (Le.,

pin

1is

connected

to chassis ground

within

the

dialer

and

pins

18

and

19

are not connected).

PC/MIC Jumper

(r)-This

option allows

connection

of

PC

(Programming

Common) to

MIC

(Mode Indicator Common)

in

the

TelCo

line

interface.

This

option

is

used

in

single-line dialer

application

where

asingle

conductor is provided

in

the modem line interface cable for PC/MIC.

Applies only to

VA811S

versions.

Dial Mode Select

(A3,

A4)-This

option

provides

either

manual

or au-

tomatic selection of dial mode as follows:

•Pulse: Forces pulse dial only.

•Tone: Forces tone dial only.

•Automatic:

If

this position is selected,

the

dialer

will

tone

dial

the

first

digit

and

monitor dial tone.

If

dial tone

disappears

within

.5

second,

the dialer will tone dial the remaining digits; if dial tone is still

present

,~.

after

.5

second, the dialer will

pulse

dial

the

entire

number

instead.

Blind Dial

(A2)-

The

VA811

incorporates apositive dial-tone detector

and

normally inhibits the dial sequence

until

adial

tone

has

been

de-

tected. With this option enabled,

blind

dialing is

initiated

after CRQ (Call

Request) is ON for 5seconds,

independent

of dial tone.

Line Transfer Control

(B5,

B6)-This

option

determines

when

the

dialer

transfers control of the telephone line to

the

modem

(single-line dialer

version only). The three possibilities are:

•End-of-Number:

If

this setting is selected,

the

dialer transfers control

to the modem immediately after

the

last digit is dialed.

When

this

setting is used, the modem is responsible for detecting carrier

and

completing the line-connect protocol.

•Start-of-Answer Tone:

If

this

option

is selected,

the

dialer waits for

answer tone from the remote

modem

and

transfers control 1.5 seconds

after the beginning of answer tone is detected.

This

setting is

used

for

Bell 103-

and

212-type protocols,

where

MARK is

used

in

lieu

of a

separate answer-tone frequency.

•End-of-Answer Tone:

If

this setting is selected,

the

dialer waits for

answer tone

and

transfers control after

answer

tone is complete. (An-

swer tone duration must be at least 1.5 seconds.)

This

setting is

used

for all other modems except

the

Bell 103

and

212.

2-2

~.

/~

DLO Control

(A6)-DLO

(Data Line Occupied),

sent

to

the

computer

via

interface

pin

22, indicates

that

the

communication

channel

is busy.

If

the

local position is selected,

DLO

is

turned

ON

when

the

dialer

or

the

local

modem

is off hook (busy).

If

the

remote

position

is selected, DLO is

turned

ON

when

the called

number

is

busy

(Le., if a

busy

tone

is detected

by

the

dialer).

ACR

Select (Bl, B2,

B3)-ACR

(Abandon Call

and

Retry),

sent

to

the

computer

via interface

pin

3, suggests

that

the

call

attempt

be

aborted

and

retried at alater time. This

option

allows

user

selection

of

the

conditions

that generate

ACR.

Since

the

switches

operate

independently,

the

dialer may be

commanded

to

turn

on

ACR

under

any

or

all of

the

following conditions:

•If

an

invalid digit is dialed

•

If

a

busy

tone is detected

•

If

the

local

modem

is

busy

ACR

Timing

(A7,

A8)-

To

avoid

inordinately

long waiting

periods

on

calls,

the

VA811

incorporates a

timer

that

turns

on

ACR at

the

end

of the

selected delay period (see Table 2-1).

The

timer

is

started

each

time

CRQ

(Call Request) is

turned

ON

and

reset

each

time

PND (Present Next Digit)

is

turned

OFF.

DSC Inhibits

ACR

Timer

(A5)-DSC

2(Distant

Station

Connected), re-

turned

to

the

computer

via interface

pin

13,

indicates

that

the

dialer

has

completed

the

call

and

transferred control to

the

modem.

If

this

option

is enabled,

the

ACR

timer

is

stopped

when

DSC is

turned

on.

If

disabled,

the

ACR

timer

will

continue

to

run

(and

time

out) after control has

been

transferred to

the

modem. (The latter setting is

useful

when

the

Line

Transfer Control option is set to

End

of Number.)

Teletype Interface

(B4)-

This

option

allows

the

dialer

to be

used

for

teletype (TWX) operation.

Must

be

disabled

for

switched-network

(DDD)

operation.

2

This

signal is also identified as DDS (Data Set Status) or COS (Call

Origination Status)

in

certain RS366

documents.

2-3

II

jk

II

f9

I I

I

I

I

h

I

I

5

I

I I

vw

II

tu

II

T1

82083

BO

REV

0

I~

M271

a

I

DI

iI

J4

-------.L---~

I

J2[1]

J5

I

n

I

VA811·01

Figure

2-1.

VA811

Switch

and

Strap

Locations

Table 2-1.

VA8l10ptions

Option

Name

Switch/Strap

Configuration

Dialer Type

Single-line Dialer (SLD)

Ai

OFF;

j,

k,

1,

s, t, uIN;

and

f,

g,

h,

v,

w

OUT

Multiline

Dialer (MACS)

Ai

ON; j , k,

1,

s, t, uOUT;

and

f,

g,

h,

v,

WIN

Blind

Dial

A2

Enable ON

Disable OFF(*)

Dial

Mode

Select

A3

A4

Pulse

OFF OFF

Tone OFF ON

Automatic

ON OFF(*)

DSC

Inhibits

ACR

Timer

A5

DSC

Inhibits

ACR ON(*)

Disable OFF

DLO

Control

A6

Local ON

(SLD)

Remote OFF (MACS)

ACR

Timing

A7

A8

56

seconds

ON ON

42

seconds

ON OFF(*)

28

seconds

OFF ON

14

seconds

OFF OFF

2-4

/~

Table 2-1. VA811

Options

(cont'd)

Option

Name

Switch/Strap

Configuration

ACR

Select

Bl

B2 B3

-

ACR

with

Invalid

Digit

ON

-

-(*)

ACR

with

Busy

Tone

-

ON

-(*)

ACR

with

Local

Modem

Busy

--ON(*)

Teletype

Interface

B4

Enabled

(TWX)

ON

Disabled

(DDD) OFF(*)

Line-Transfer

Control

B5

B6

End

of

Number

ON

OFF

Start

of

Answer

Tone

OFF

ON

(103/212)

End

of

Answer

Tone

OFF

OFF

(non-l03/212)

Dialer

Address

B7

B8

Address

0

OFF

OFF(*)

Address

1

OFF

ON

Address

2

ON

OFF

Address

3

ON

ON

Mfg.

Test/Internal

Memory

a

Test IN

Normal

Operation

OUT(*)

RS366A

Interface

ill

n

Enable

OUT

IN

Disable

IN OUT(*)

Signal

Ground

Reference

p

Connected

to

Chassis

Gnd

IN

Isolated

from

Chassis

Gnd

OUT(*)

PC/MIC

Jumper

r

Connected

IN

Isolated

OUT(*)

Mfg.

Test/Line-Current

Detect

x

Test (LCD

Bypassed)

IN

Normal

Operation

OUT(*)

NOTES: (*)

Standard

setting,

all

models

(SLD)

Standard

setting,

single-line

dialer

versions

(MACS)

Standard

setting,

multiline

dialer

versions

Either

position

2-5

/~

\

i~

J

,,~

INTRODUCTION

PRELIMINARY

PROCEDURES

Unpacking

And Inspection

Section 3

INSTALLATION

This

section provides installation

procedures

for

the

VA811

dialer. In

case of difficulty during any of

the

following

procedures,

contact

the

nearest

RACAL-VADIC

Regional Service Center

listed

at

the

front of this

manual.

~: ~: ~:

~:~:

~:

~:~:

~:

~:

~:~:~:

~:

~: ~:

~: ~:

·CAlifi

ON

::

~:

~

:~:~:

~:~:

~

:~:~:

~:~:

~:

~:~:~:~:~:

....................................................

Procedures

in

this

section

should

be performed

in

the

sequence

and

manner

prescribed.

Any

devia-

tion may damage

the

equipment.

Inspect

the

shipping

carton

immediately

upon

receipt.

If

the

carton

has

been

damaged, request

that

the

carrier's agent be

present

during

unpack-

ing. Inspect contents for physical damage

and/or

missing parts.

If

the

contents have been damaged or parts are missing,

immediately

notify the

nearest

RACAL-VADIC

sales office.

3-1

Equipment

Supplied

Additional

Equipment

Required

Preinstallation

Checks

Table

3-1

lists the

equipment

supplied

with

the

VA811.

Table 3-1.

Equipment

Supplied

Dialer

PCB

Part

No. Cable

Part

No.

VA811-PS 82083-011 15036-xxx

VA811-SS 82083-011 15035-xxx

VA811-XM 82083-011 15000-093

NOTOE:

Cables

ending

in

-xxx may be

ordered

in

the

following lengths:

-001

for 24 in.

-002

for 42 in.

-003

for 12

ft.

-004

for 7

ft.

-009

for

customer

specified

The

VA811

is

intended

for use

with

aRACAL-VADIC chassis as

specified

in

Table 3-2. Either

an

RS366

computer

port

or

an

RS232C

port

with

a

VA831

adapter

is also required for installation.

Table 3-2.

Additional

Equipment

Required

Dialer Chassis

VA811-PSISS

VA1601U,

VA1616A/B,

or

VA1680A/B

VA811-XM VA1616M or VA1680M

Prior to installation, check the following:

•Verify

equipment

configurations

shown

in

Figures 1-1

and

1-2 (VA811-

PS/SS) or Figure 1-3 (VA811-XM).

•Verify

switch

and

strap options described

in

Section

2.

•Refer to Table

3-1

and

verify

that

the

proper

cable

has

been

supplied

with

dialer.

.,.

..

.....

.

-.

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

.N

O'TE

~:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

~

:

....................................................

Prior to connecting

any

device to

the

switched-telephone

network,

Federal

Communications

Com-

mission

(FCC)

regulations

specify

that

the

customer

must

provide

the

telephone

company

with

the

name of the manufacturer,

equip-

ment

model number, FCC regis-

tration

number,

and

ringer

equivalence

number

of

the

de-

vices to be used.

This

information

is listed at

the

front of

this

manual.

3-2

VA811-PS/SS

INSTALLATION

The

VA811-PSISS single-line dialer

can

be

installed

in

any

available slot

in

the

VA1601U,

VA1616A/B,

or

VA1680A/B

chassis. Install

the

unit

as

follows:

1. Turn off power to chassis.

2. Carefully

insert

dialer

in

desired

slot. Be

sure

printed

circuit

board

is

properly

seated

in

edge connector,

then

tighten

thumbscrew

on

rear of

board.

3. Connect TelCo interface cable

supplied

with

dialer

to

connector

la-

beled TELCO

(J2)

on

rear

panel

of

dialer

(see Figure 3-1)

and

connect

other

end

of cable to TelCo jack. (See Section 5for a

description

of

standard

TelCo jacks.)

4. Connect TelCo interface cable from associated

modem

to dialer con-

nector labeled MODEM

(J4).

5.

COllnect RS366 interface cable (user-supplied) from

computer

port

(or

VA831B adapter) to 25-pinfemale

connector

(J5)

on

rear

panel

of dialer.

(If

VA831

adapter

is used, refer to

installation

procedures

in

related

manual.)

6. Turn

on

power

and

perform

checkout

procedures

in

Section

4.

SUPPLIED

WITH

DIALER

/

\

SUPPLIED

WITH

MODEM

......-........

---~

TO

TELCO LINE

/

USER-SUPPLIED

......----+---\-~~

TO

RS232

PORT

......----+-

~TO

RS366

PORT

(OR

VA83l)

'5

}4

}2

P3

VA8ll

DIALER

MODEM

~--

Pl

~--

TO

VA1601U, VA16l6AX/BX

OR

VA1680AX/BX

CHASSIS

VASll-0S

Figure

3-1.

VA811-PS/SS

(SLD)

Connections

3-3

VA811-XM

INSTALLATION

The

VA811-XM

multiline

(MACS) dialer

must

be

installed

in

slot

16 of

the

VA1616/80M

chassis for

proper

operation.

(The

optional

VA831A

adapter, if

used

in

the

same chassis, goes

in

slot

15.)

Install

the

dialer

as

follows:

1.

Turn

off

power

to chassis.

2.

Carefully

insert

dialer

in

slot 16. Be

sure

printed

circuit

board

is

properly

seated

in

edge connector,

then

tighten

thumbscrew

on

rear

of

unit.

3.

Connect

RS366 interface cable (user-supplied) from

computer

port

(or

VA831A adapter) to 25-pinfemale

connector

(J5)

on

rear

panel

of

dialer

(see Figure 3-2).

If

the

VA831

adapter

is

used,

refer

to

installation

procedures

in

related

manual

for cable

connections

to

that

unit.

4.

Turn

on

power

and

perform

checkout

procedures

in

Section

4.

/

~----~TO

TELCO LINE

/

USER-SUPPLIED

.......---~---~TO

RS232 PORT

'5

'4

'2

LDAISY CHAIN

P3 .J - - - - - -

-~TO

NEXT DIALER

........

..

TO RS366 PORT

(OR VA831)

(1-15)

VA811

DIALER

MODEM

~---

P1

TO

VA1616AM/BM

OR

VA1680AM/BM

CHASSIS

SUPPLIED

WITH MODEM

VA811·06

Figure

3-2. VA811-XM (MACS)

Connections

3-4

INTRODUCTION

Section 4

CHECKOUT AND OPERATION

This

section introduces the character

set

used

by

the

VA8ll,

describes

the controls

and

indicators available

on

the

associated chassis,

and

pre-

sents operational checkout procedures for

the

dialer. Abasic knowledge

of RS366 interface operation is assumed. Readers

unfamiliar

with

this

interface are encouraged to read Section 5before proceeding.

4-1

CHARACTER

SET

The

VA811 accepts decimal-weighted

binary

digits from

the

four

number

bit lines

(NB1-NB8)

of the

RS366

interface

and

generates

either

the

pulse

sequence or the tone pairs specified by each digit received.

The

dialer

recognizes digits 0

.....

9as valid dial digits

in

all modes

and

digits

10(*)

and

11(#)

in

tone dial mode (see Table 4-1). Digit 12 is recognized as

an

End-of-Number

(EON)

code

and

causes

the

dialer to

immediately

transfer

control to the associated modem. Digits 13

and

14 are recognized as a

Tandem Dial code that causes the dialer to wait for .5 second,

then

look

for asecond dial tone.

Table 4-1. Telephone Digits

Number

Bit Dial Digit

Function

842

1Decimal Hex

o0 0 0 0 0 Telephone digit 0

o0 0 1 1 1Telephone digit 1

o0 1 0 2 2 Telephone digit 2

001

13 3 Telephone digit 3

o1 0 0 4 4Telephone digit 4

o1 0 1 5 5 Telephone digit 5

o1 1 0 66Telephone digit 6

o1 1 1 7 7 Telephone digit 7

1

000

88Telephone digit 8

1

001

9 9 Telephone digit 9

1 0 1 0

10

ATelephone digit *

101

111 BTelephone digit #

1

100

12 CEnd-of-Number Code

1

101

13 DTandem Dial Code

1 1 1 0

14

ETandem Dial Code

1

111

15 FNot assigned

4-2

When

used

in

aMACS

environment,

the

first

two

digits

received

by

the

VA811

are

interpreted

as

dialer

address/modem

type

and

modem

address

digits.

The

first digit received (Address Digit

#1)

specifies

dialer

address

o

through

3

on

NBl

and

NB2,

and

either

a103-type

or

anon-103-type

modem

on

NB4 (see Table 4-2).

If

only

one

dialer

is

used

in

asystem,

the

dialer

address

should

be set to

O.

Table 4-2.

Dialer

Address/Modem

Type

Number

Bit Dial Digit

Function

842

1Decimal Hex

o0 0 0 0 0 Dialer

Address

0non-103

000

11 1 Dialer

Address

1non-103

o0 1 0 2 2 Dialer

Address

2non-103

001

133Dialer

Address

3

non-l03

o1 0 0 4 4Dialer

Address

0103/212

o1 0 1 5 5 Dialer

Address

1103/212

o1 1 0 66Dialer

Address

2103/212

o1 1 1 77Dialer

Address

3103/212

The

second

digit received (Address Digit

#2)

specifies

the

slot

address

(see Table 4-3) of the MACS

modem

that

the

call is

to

be

placed

through.

Table

4-3.

Modem

(Slot)

Address

Number

Bit Dial Digit

Function

842

1Decimal Hex

o0 0 0 0 0 Slot

Address

0

000

1 1 1 Slot

Address

1

001

022Slot

Address

2

001

133Slot

Address

3

o1 0 0 44Slot

Address

4

o1 0 1 55Slot

Address

5

o1 1 0 66Slot

Address

6

o1 1 1 77Slot

Address

7

1

000

88Slot

Address

8

100

199Slot

Address

9

1 0 1 0 10 A

Slot

Address

10

101

1

11

BSlot

Address

11

1

100

12 CSlot

Address

12

1

101

13 D

Slot

Address

13

1 1 1 0 14 ESlot

Address

14

1111 15 FSlot

Address

15

4-3

EXAMPLE

CALLS

The following hexidecimal digit strings represent calls to (408) 744-0810

under

various conditions.

•Single-line dialer:

4087440810

4087440810C

9D4087440810

•MACS dialer:

474087440810

474087440810C

479D4087440810C

Immediate transfer to

modem

(EON code)

Tandem dial through local (9-level) exchange

Dialer address

0,

103-type modem,

modem

address 7

Same as above

with

immediate transfer to

modem (EON code)

Same as above

with

tandem

dial throughlocal

(9-level) exchange

CONTROLS

AND

INDICATORS

The

VA811

interfaces to the chassis display

and

control bus

through

card-

edge connector

Pl.

When the dialer card slot is

addressed

from

the

front

panel, the chassis diagnostic indicators display

the

significant interface

signals

used

by the dialer. Figure

4-1

shows

the

diagnostic indicators

used

on

RACAL-VADIC

chassis. The

upper

legend

in

the

figure shows

the standard indicator functions as labeled

on

the

front panel;

the

lower

legend identifies the indicator functions displayed

when

the

adapter

is

selected'. Table 4-4 identifies the function of each control

and

indicator.

4-4

TXD RXD RTS CTS DSR DTR RI CXR

••••••••

CRQ PND DPR DSC ACR DLO

\'1\811-07

Figure

4-1.

Diagnostic Display

Indicators

Table

4-4.

Controls

and

Indicators

Indicator

Function

(with

VA8ll

selected)

TXD Not

used

RXD

Not

used

RTS CRQ (Call Request)

CTS PND

(Present

Next

Digit)

DSR DPR (Digit

Present)

DTR DSC (Distant

Station

Connected)

RI

ACR

(Abandon

Call1Retry)

CXR DLO (Data

Line

Occupied)

PWR

Power

Supply

Status

CHANNEL*

Channel

Status

STATUS

Switch

CHANNEL Selects

card

slot

SELECT

ALB (Local Test) Forces DLO (takes

dialer

off

hook

and

busies

out

attached

phone

line)

DLB

(Remote Test) Forces

slow

dial

test

mode

TXR (Transmit Reversals) Forces CRQ

in

test

mode

*

Flashes

in

test

mode

or if DPR

remains

off for

more

than

1.5

seconds

after CRQ

turns

on; ON

during

dial

sequence;

OFF

when

CRQ is off

and

no

test

mode

selected.

4-5

OPERATIONAL

CHECKOUT

VA811-PS/SS

The

following procedures verify

the

operational integrity of

the

VA811.

The

first set of procedures applies to single-line

dialer

(VA811-PS/SS)

installations,

the

second set to MACS (VA811-XM) installations.

To

check operation of the

VA811

in

asingle-line

environment,

perform

the

following steps:

1.

Select dialer (slot) address

with

CHANNEL SELECT

switch

on

front of

chassis.

2. Set ALB/OFF switch to

ALB

and

verify

that

DLO(CXR)

indicator

illu-

minates. (This takes the dialer off

hook

and

busies

out

the

telephone

line attached to the dialer.) Return ALB/OFF

switch

to OFF.

3. Set TXR/OFF switch to TXR

and

verify

that

CRQ(RTS)

and

DLO(CXR)

indicators illuminate. Verify that PND(CTS)

indicator

illuminates

after

abrief delay, indicating that dial tone detector is operating properly.

Return TXR/OFF switch to OFF.

4. Set TXR/OFF to

TXR

once again

and

monitor

delay interval

between

CRQ(RTS) turn-on

and

ACR(RI) turn-on. Verify

that

delay

corresponds

to

ACR

timing selected

in

Table 2-1. Return TXR/OFF

switch

to OFF.

5. Set DLB/OFF switch to

DLB.

Initiate call from

computer

and

verify

the

following sequence

with

chassis display indicators:

a.

CRQ(RTS)

turns

ON (call request from computer).

b.

PND(CTS)

turns

ON (dial tone detected).

c.

DPR(DSR)

turns

ON (digit

present

from computer).

d.

PND(CTS)

turns

OFF after being

on

for 1second.

e.

DPR(DSR)

turns

OFF also.

f.

PND(CTS) remains OFF for 1second,

then

turns

ON.

g.

Steps

c,

d,

e,

and

frepeat

until

all digits have

been

dialed.

6. Set DLB/OFF switch to OFF to terminate test.

4-6

/~.

VA811-XM To

check

operation

of

the

VA811

in

a

multiline

(MACS)

installation,

perform

the

following

steps:

1.

Select

dialer

(slot)

address

with

CHANNEL

SELECT

switch

on

front

of

chassis.

2.

Set

TXR/OFF

switch

to TXR

and

verify

that

CRQ(RTS)

and

PND(CTS)

indicators

illuminate.

Return

TXR/OFF

switch

to

OFF.

3.

Set

TXR/OFF to TXR

once

again

and

monitor

delay

interval

between

CRQ(RTS)

turn-on

and

ACR(RI)

turn-on.

Verify

that

delay

corresponds

to ACR

timing

selected

in

Table 2-1.

Return

TXR/OFF

switch

to

OFF.

4.

Set

ALB/OFF

switch

to

ALB.

Send

dialer

address/modem

type

and

modem

address

digits

to

dialer

and

verify

that

DLO

indicator

illumi-

nates.

(If

only

one

dialer

is

used

in

the

system

and

a

MACS

modem

is

installed

in

the

first

card

slot,

the

address

digits

can

be

0,0.)

If

this

test

fails,

verify

that

dialer

address/modem

type

digit

corresponds

to

the

Dialer

Address

selected

in

Table 2-1.

5.

Set

DLB/OFF

switch

to DLB.

Initiate

a

call

from

the

computer

and

verify

the

following

sequence

of

events

with

the

chassis

display

indicators.

a. CRQ(RTS)

turns

ON

(call

request

from

computer).

b. PND(CTS)

turns

ON

(dial

tone

detected).

c. DPR(DSR)

turns

ON

(digit

present

from

computer).

d. PND(CTS)

turns

OFF

after

being

on

for 1

second.

e. DPR (DSR)

turns

OFF

also.

£.

PND(CTS)

remains

OFF

for 1

second,

then

turns

ON.

g.

Steps

c, d, e,

and

f

repeat

until

all

digits

have

been

dialed.

6.

Set

DLB/OFF

switch

to

OFF

to

terminate

test.

4-7

/~

, I

,~.

INTRODUCTION

EQUIPMENT

INTERFACES

Section 5

SUPPLEMENTAL INFORMATION

This

section

describes the

hardware

interfaces

used

by

the

VA8ll

and

briefly discusses the operational characteristics of

the

dialer

in

both

a

single-line

and

multiline

environment.

Except

where

noted,

the

follow-

ing information applies to

both

the

VA8li-PS/SS (single-line)

and

VA8ii-

XM

(multiline) dialer.

The

VA8ll

contains four connectors (J2,

J4,

J5,

and

P3)

mounted

on

the

rear

panel

of

the

unit

and

acard-edge

connector

(Pi)

at

the

opposite

end

of

the

printed

circuit

board

(PCB).

These

connectors

are

used

as follows:

J2-

This

8-position

miniature

connector

(labeled TELCO)

provides

di-

rect

connection

to

the

TelCo

line

in

single-line

dialer

(VA8ii-PS/SS)

installations. The line interface cable

supplied

with

the

VA8il-PS/SS

connects between the TelCo-supplied jack

and

this

connector. Not

used

for

multiline

(MACS) operation.

J4-

This

8-position

miniature

connector

(labeled MODEM)

provides

a

loop-through connection to

the

TelCo

line

for

the

associated

modem

in

single-line dialer installations.

The

line

interface cable

supplied

with

the

modem

connects to this jack. Not

used

for

multiline

(MACS)

operation.

J5-

This

25-pin female

connector

provides

an

RS366 interface to

the

.

computer

equipment

(or VA831 adapter, if used)

in

both

single-line

and

multiline

installations.

When

the

VA83i is

not

used,

the

user-

supplied

cable from

an

RS366

port

connects

to

this

jack.

When

the

VA831

is used,

the

RS366 cable from P3

on

the

adapter

connects

to

this jack (see VA83i installation/operation manual).

P3-This

25-pin male connector

provides

buffered RS366

expansion

capability (daisy-chain) for

multiline

dialer

installations

using

two,

three, or four dialers

on

the

same

RS366 interface.

Where

applicable,

the

expansion

cable

provided

with

the

VA8ii-XM

connects

between

this jack

and

J5

on

the

next dialer. Not

used

for single-line operation.

Pi-This

36-pin (dual-sided 18-pin) edge

connector

provides

an

interface

to

the

display

and

control

bus

used

in

RACAL-VADIC chassis.

5-1

LINE INTERFACE

Introduction

When

ordered for single-line operation,

the

VA8ll

is

supplied

with

a

telephone interface cable terminated at

both

ends

with

miniature

tele-

phone

connectors. One

end

of the cable connects to

J2

on

the

dialer

and

the other

end

of the cable mates

with

standard

jacks

supplied

by

the

telephone company. The cable establishes apermissive (VA8ll-PS) or a

programmable (VA8ll-SS) direct connection to

the

switched-telephone

network, as defined by Part

68

of the

FCC

Rules

and

Regulations.

The VA8ll-PS,

supplied

with

acable

terminated

in

a6-position minia-

ture

connector, is registered for permissive direct connection. This ver-

sion of

the

dialer may be connected to a

standard

RJllC

voice jack (the

type normally

used

by the telephone

company

for

standard

home

or

office phones). Optionally, the VA811-PS may be

connected

to either

an

RJ41S or RJ45S data jack.

The VA8ll-SS,

supplied

with

acable

terminated

in

a8-position minia-

ture connector, is registered only for programmable direct connection.

This version of the dialer requires an RJ41S or RJ45S data jack.

Tables

5-1

and

5-2

list

pin

assignments for

the

RJllC,

RJ41S,

and

RJ45S

telephone jacks,

and

Table

5-3

defines

the

standard

mnemonics

used

on

the telephone interface.

Table 5-1.

RJllC

Connector

Pin

Assignments

Pin

Mnemonic

Function

1-Not

used

2

MI

Mode Indicator

,.

3RRing

4T

Tip

5

MIC

Mode Indicator

Common

6-Not

used

5-2

.~.

Table 5-2. RJ41S,45S Connector

Pin

Assignments

Pin

Mnemonic

Function

1-*

2-*

3

MI

Mode Indicator

4RRing

5T

Tip

6

MIC

Mode

Indicator

Common

7PR Programming Resistor

8

PC

Programming Resistor

Common

*Pins 1

and

2are Ring

and

Tip

for Fixed-Loss Loop

(FLL)

connections

and

are not

used

by RACAL-VADIC devices.

Table 5-3. TelCo

Interface

Signal

Definitions

Mnemonic

Signal

Name

Function

RRing

Connection

to

one

side

of tele-

phone

line.

T

Tip

Connection

to

other

side

of

telephone

line.

MI

Mode Indicator At

the

end

of

the

dial

sequence,

MI is

momentarily

shorted

to

MIC

within

the

dialer

to take

the

associated

modem

off

hook

(see Line Transfer Control op-

tion

in

Section 2).

PR Programming

Connection

to resistor

in

TelCo

Resistor data jack (through

the

dialer)

that

sets

modem

gain for pro-

grammable

connection.

MIC/PC MI/PR Common

Common

return

for

Mode

In-

dicator

and

Programming Re-

sistor signals.

5-3

RS366 INTERFACE

Introduction

The

primary RS366 interface signals

shown

in

Figure 5-1 are described

on

the following pages. Table 5-4, following

the

signal descriptions, lists

pin

assignments for interface connector

J5.

RS366 PORT

J5

PWI

I--i--o

=6

~

OLO 22

CRQ

~

4

-=

PNO 5

NB1

~

14

NB2 15

~

NB4 16

-

NB8 17

-

OPR 2

~

OSC 13

-ACR 3

-SG 7

FG 1

+12V

TEST 9

-

.::

-12V

TEST 10

-

Figure 5-1. RS366

Interface

Signals

VA811

VA811·08

RS366 Signal

Descriptions Refer to Figure 5-1 while reading the following signal descriptions:

PWI (Power

Indication)-Signal

from dialer to

computer

indicating

power status of the dialer. The ON

condition

indicates

that

power

is

present

in

the dialer. The OFF condition, indicating

that

the

dialer is

inoperative, represents

an

impedance to signal

ground

greater

than

300

ohms.

DLO

(Data Line

Occupied)-Signal

from dialer to

computer

indicating

that communication channel is busy.

The

conditions

that

assert

DLO

are

selected by

DLO

Control option, Section 2.

CRQ (Call

Request)-Signal

from

computer

to dialer

that

initiates dial

sequence. After CRQ comes ON, the dialer waits

1.5

seconds

before going

off hook to separate successive calls long enough for exchange clear

down. CRQ

must

remain ON during

the

entire call origination

period

~

(Le., until

DSC

comes

ON)

in

order to

hold

the

dialer off hook. CRQ

must

be

turned

OFF between calls or call attempts

and

must

not

be

turned

ON

unless

DLO

is

OFF.

5-4

PND (Present Next

Digit)-Signal

from dialer to

computer

requesting a

new

digit. PND is initially

turned

ON after

the

dial

tone

signal has been

detected

and

remains ON

until

DPR (from

the

computer) is

turned

ON.

When

DPR is

turned

ON,

the

dialer reads

and

dials the digit

presented

on

NB1-NB8,

then

turns

PND OFF. PND does

not

come ON again until

DPR has been

turned

OFF. This sequence is

repeated

until

all digits have

been dialed,

then

PND will come ON

and

remain

ON.

NB1-NB8 (Number

Bits)-ParalleI4-bit

binary

signal (active LOW) from

the

computer

to the dialer representing

the

digit to be dialed. (Also

used

to

send

Tandem Dial

and

End-of-Number codes

and

MACS addresses,

as described

in

Section 4.) These lines

must

be

held

stable while

DPRis

ON.

DPR (Digit

Present)-Signal

from

computer

to dialer

indicating

that

information

on

number

leads (NB1-NB8) is valid. PND (from dialer)

must

be ON before

DPR

is

turned

ON,

and

PND

must

be OFF before

DPR

is

turned

OFF. After the dialer has accepted

the

last digit of

the

called

number

(including EON

when

used)

and

has

turned

PND OFF, DPR

must

be

turned

OFF

and

held

in

the

OFF

condition

even

though

PND may

come ON again.

DSC

(Distant Station

Connected)-Signal

from

dialer

to

computer

indi-

cating that the dialer has completed

the

call

and

line control has been

transferred to modem. At this point,

the

computer

may release CRQ

without

'causing adisconnect.

ACR

(Abandon Call

and

Retry)-Signal

from dialer to

computer

suggest-

ing

that

the

call be aborted

and

retried later.

The

conditions

that

turn

ACR

ON are user-selectable options

and

are described

in

Section

2.

SG

(Signal

Ground)-Common

ground

reference

point

for all interface

circuits. May be connected to chassis

ground

by

user

options

(see

Section

2).

FG

(Chassis [Protective]

Ground)-Common

return

to ac

power

ground.

+

12

V

and

-

12

V

(Test)-

These signals

provide

test

points

to verify

the

presence

of power

in

the modem. This is

supplied

through

1.5

kohm

resistors

and

is not

intended

as asource of

power

for

peripheral

equipment.

5-5

Table 5-4.

RS366

Interface

Connector

(J5)

Pin Mnemonic Function Signal

Type*

1FG

Frame

Ground

-

2DPR Digit

Present

PL

3ACR

Abandon

Call

and

Retry PL

4 CRQ Call

Request

PL

5PND

Present

Next Digit PL

6PWI

Power

Indication

PL

7

SG

Signal

Common

-

B-Not

used

-

9

+V

+12 VTest -

10

-V

-12

VTest -

11 -Not

used

-

12 -Not

used

-

13 DSS Data Set

Status

PL

14

NBl

Number

Bit 1NL

15

NB2

Number

Bit 2NL

16 NB4

Number

Bit 4NL

17 NBB

Number

Bit 8NL

18 RC** Receive

Common

-

19 SC**

Send

Common

-

20 -Not

used

-

21

-Not

used

-

22 DLO Data Line

Occupied

PL

23-25

-Not

connected

-

*PL =Positive TRUE logic

NL =Negative TRUE logic

- = Either state

)(.*

=RS366A

option

enabled

(see

Section

2)

5-6

RS366

Protocol

Basic single-line dialer operating protocol for

the

RS366 interface is

summarized

in

Table 5-5. As

indicated

in

the

table, acall is

initiated

from

the

computer

by asserting CRQ

on

the

RS366 interface. (It is advisable to

test PWI

and

DLO

before asserting CRQ.)

When

CRQ is

turned

ON,

the

dialer starts the

ACR

timer, waits 1.5

seconds

(to

ensure

TelCo exchange

has cleared

down

between calls),

then

goes off

hook

and

waits for dial

tone.

When

dial tone is detected,

the

dialer

asserts PND to

the

computer.

(DLO

will also be

turned

on

if

the

local DLO

option

is

selected-see

Section 2.) At this point,

the

computer

sets

the

first

dial

digit

on

NB1-NB8,

then

asserts DPR.

When

the

dialer

senses

DPR ON, it reads

NB1-NB8, dials the digit specified,

then

turns

PND OFF.

(If

pulse

dial

mode

has

been

selected, the dialer

inserts

a750 ms

inter

digit delay before

turning

PND OFF.) At this point,

the

ACR

timer

is reset

within

the

dialer

and

DPR is

turned

OFF by

the

computer.

When

the

dialer

senses

DPR

OFF, it asserts PND once again, requesting a

new

digit.

This

handshaking

cycle repeats

until

all digits have

been

transferred to

the

dialer.

When

the

last digit has been dialed,

the

dialer

transfers

line

control to

the

modem

and

asserts

DSC.

(See Section 2for line-transfer options.)

With

the

modem

now

connected to line,

the

computer

turns

CRQ OFF, releas-

ing

the

dialer,

and

the dialer

turns

PND OFF.

Table

5-5.

RS366

Interface

Dial

Sequence

Event No. RS366

Port

VA811

Dialer

Notes

1Turn

CRQON

ACR

timer

starts

2Wait 1.5

seconds

Clear-down delay

Detect dial tone

TurnPNDON

DLO

ON (user option)

3Set

dial

digit

NB1-NB8

Turn

DPRON

4Read digit

and

dial

If

pulse

dial,

wait

interdigit delay

TurnPND

OFF ACR

timer

recycles

5Turn DPR OFF

6

TurnPND

ON

REPEAT 3THROUGH 6UNTIL

ALL

DIGITS

HAVE

BEEN DIALED

7Detect Answer Tone Line-transfer control

Transfer control

set

by

user

option

to

modem

(see Section 2)

TurnDSC ON

8

TurnCRQOFF

9

TurnPND

OFF

5-7

Multiline (MACS) operating protocol is

identical

to

the

single-line pro-

tocol described previously except

that

the

qialer

and

modem

must

be

~

addressed

before starting the dial sequence. As

indicated

in

Table 5-6,

the

computer

initiates acall

in

the

same fashion,

but

the

dialer

asserts

PND immediately, requesting a

dial~r

address/modem-type

digit. (Tele-

phone

and

address digits are

defin~d

in

Section 4.) At

this

point,

the

computer

sets address digit

#1

on

the

interface

and

asserts DPR.

The

dialer reads

and

compares the address

with

that

selected (see Dialer

Address option, Section 2),

and

turns

PND OFF if

the

digit is recognized.

When

the

computer

turns

DPR OFF,

the

dialer

asserts PND

once

again,

requesting a

modem

address. The

computer

places

the

desired

modem

address

on

the interface

and

sets DPR.

The

dialer

reads

the

address,

selects

the

specified

modem

via

the

MACS chassis bus,

and

turns

PND

OFF. The

computer

turns DPR OFF,

and

the

dialer,

after"

waiting

the

1.5-

second

clear-down delay, connects to

the

telephone

line

via

the

modem

line interface

and

looks for dial tone.

From

this

point

the

sequence

of

events is identical to the single-line dialer protocol

described

previously.

Table 5-6. RS366 Interface Address Sequence (MACS only)

Event No. RS366 Port

VA8ll

Dialer Notes

1

TurnCRQON

ACR

timer

starts

2

TurnPNDON

3Set

Address

1NB1-NBB

TurnDPRON

4Read, Compare

with

User-selected

Dialer Address (see Section 2)

TurnPND OFF

ACR

timer

recycles

5Turn DPR OFF

6TurnPND ON

7Set

Address

2NB1-NBB

Turn DPR ON

BRead, select

modem

via chassis bus

TurnPND OFF ACR

timer

recycles

9Turn

DPROFF

See Table 5-5, Events 2-9

CHASSIS

INTERFACE As

mentioned

previously, the dialer interfaces to

the

standard

controls

and

indicators

used

on

RACAL-VADIC

chassis

through

the

36-pin card-

edge connector (Pi) located at one

end

of

the

PC board.

When

configured

for MACS operation, the'dialer also uses

this

chassis interface to com-

~

municate

with

MACS modems.

Pin

assignments for

the

edge

connector

are listed

in

Table

5-7.

Further information

on

these

signals

can

be

found

in

the

associated chassis manual.

5-8

Table 5-7. Edge Connector

Pin

Assignments

(Pt)

Pin

Mnemonic

Function

Signal

Type*

AFDLO Force Data Line

Occupied

(ALB

switch)

NL

1SI Status Display NL

B-Not

used

-

2-Not

used

-

CDCRQ Display Call Request NL

3DPND Display

Present

Next Digit

NL

DDDPR Display Digit

Present

NL

4DDSC Display Distant

Station

Connected

NL

EDACR Display

Abandon

Call

and

Retry NL

5DDLO Display Data Line

Occupied

NL

FSLDL

Slow

Dial

(DLB

switch) NL

6FCRQ Force Call Request (TXR

switch)

NL

HFSH

Flash

Input

(2

Hz) NL

7DOH Dialer Off Hook PL

JDDA Dialer Data Access PL

8XFER Dialer Transfer PL

KMDR

Modem

Data Ring (to

modem)

A

9MDT

Modem

Data

Tip

(to

modem)

A

L-Not

used

-

10 A8

Address

Bit 8NL

MA4

Address

Bit 4NL

11

A2

Address

Bit 2NL

NA1

Address

Bit 1NL

12

STRB Dialer Strobe NL

pC8 Compare Bit 8PL

13

C4

Compare

Bit 4PL

R

C2

Compare Bit 2PL

14

Cl

Compare Bit 1PL

S-Signal

Common

-

15 -Signal

Common

-

T-

+5

VPower -

16 -

+5

VPower -

U-

+12

VPower -

17 -

+12

VPower -

V-

-12

VPower -

18 -

-12

VPower -

*

PL

=Positive TRUE logic

NL

=Negative TRUE logic

A=

Analog

signal

- =

Don't

care

5-9

i~

'~;)

./

SPECIFICATIONS

~

OPERATING

CHARACTERISTICS

Operating

Modes

Tone dial,

pulse

dial, or automatic dial

mode

selection

Pulse

Dial

Mode

Pulse

Rate:

10

pulses

per

second

±100/0

Duty Cycle:

61

0/0± 30/0

(percent

break)

Interdigit Delay: 750 ±50 ms

Tone Dial

Mode

Tone Duration:

70

± 5 ms

Intertone

Delay:

70

± 5 ms

Transmit Level:

-1.5

±2.5

dBm

of

continuous

tone

pair

power

(less

than

0dBm averaged over a

3-second

interval

during

normal

dialing)

Frequencies:

BCD

Digit

Tone

Pairs

0001 1697 1209 Hz

0010 2697 1336 Hz

0011 3697 1477 Hz

0100 4770 1209 Hz

0101 5770 1336 Hz

0110 6770 1477 Hz

0111 7852 1209 Hz

1000 8852 1336 Hz

1001 9852 1477 Hz

~

0000 a941 1336 Hz

1010 *941 1209 Hz

1011 #941 1477 Hz

Dial

Tone

Detection Frequency: 350 to 600 Hz

(DDD

&TWX) Stopband: 1950 to 2300 Hz,

up

to

-10

dBm

ON Delay: 0.5 ±

.2

second

Threshold:

ON @

-32

dBm; OFF @

-38

dBm

Busy

Tone

Detection Frequency:

DDD-350

to 600 Hz

TWX-1990

to 2260 Hz

Rate:

DDD-Greater

than

20 IPM

TWX-Greater

than

20 IPM

ON Delay: 1.5 seconds ±

.1

second

for 60 IPM or greater

4seconds for less

than

60 IPM

Threshold:

DDD-ON

@ - 32 dBm; OFF @ - 38

dBm

TWX-ON

@ - 45 dBm; OFF @ - 52

dBm

Answer

Tone

Frequency: 1990 Hz to 2260

Hz

Detection ON Delay: 1.5

seconds

±

.1

second

Threshold:

ON @

-45

dBm; OFF @

-52

dBm

5-11

LINE-CONTROL

FUNCTIONS

Transfer Control

Tandem Dialing

Blind Dialing

End of Number Code

Modem BusyIndication

Data Line

Occupied

Line-Current Status

Indicator

Start or

end

of answer tone or

end

of number,

switch

selectable

Digit 1101 or

1110

(SEP

character) resets dial

tone

detector; denotes

"Delay

.5

second

then

looks for

new

dial

tone"

Raises PND 5seconds after

CRQ,

switch

selectable

Binary 1100 causes immediate line transfer to

modem

DLO

and/or

ACR,

local or remote busy,

switch

selectable

ON

with

CRQ, or

when

local

modem

is busy, or

with

remote busy,

switch

selectable

ACU issues

DLO

and/or

ACR,

depending

upon

OptiOIl

selected

Abandon

Call

and

Retry Clamp OFF:

Force ON:

Delay:

Start:

Restart:

With distant station

connected

(DSC)

With invalid digit,

busy

signal detect,

modem

busy,

or

ACR

time out

14,

28,42,

56

seconds

With call request

(CRQ)

With present next digit (PND) going OFF

.~

Double Ring Back

INTERFACES

Compatible

with

CCITT

V.25

ring-back signal

Per EIA RS366 (RS366A user option)

To

Computer

(DTE

Interface)

To

TelCo

(Line Interface)

POWER

REQUIREMENTS

VA811-P,S:

VA811-SS: permissive direct-connect

per

FCC Rules, Part 68

programmable direct-connect

per

FCC Rules, Part 68

ENVIRONMENTAL

REQUIREMENTS

Maximum rating +12 Vdc @125 rnA

-12

Vdc @125 rnA

+5

Vdc @270 rnA

Temperature Operating:

Nonoperating: 0° to 60° C

-20° to 70° C

Humidity

Up to

90%

relative humidity,

without

condensation

5-12

.~

~\

(PHYSICAL

CHARACTERISTICS

Height

Width

Depth

Weight

0.50

in. (1.3 em)

6.4

in. (16.3 em)

12.75

in. (32.4 em) .

0.875

lb. (1.925

kg)

5-13

:~.

/

w

w

en

en

w

a:

o

o

<

>-

CD

o

;(

0-

W

CD

-I

-I

~

W

(!)

<

.-

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o

0-

)

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the

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You

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ll

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comments?

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18008-049

WARRANTY,

LIMITATION

OF

LIABILITY

AND

SERVICE

INFORMATION

RACAL-VADIC

warrants

that

its

products

will

perform

in

accordance

with

RACAL-

VADIC's

published

spncifications

(or

the

specification

agreed

to. in

writing.

by

Buyer

and

RACAL-VADIC.

and

made

a

part

of

the

sales

contract),

for a

period

of

12

months

from

date

of

original

shipment.

During

this

\\'arranty

period

RACAL-VADIC will,

at

no

cost.

promptly

repair

or

replace

any

defective

equipment

returned

to RACAL-VADIC.

transportation

charges

prepaid

by

Buyer.

and

will

return

such

equipment.

transportation

charges

prepaid

via

the

same

or

like

method

as received.

except

where

special

handling

or

shipment

is

requested

by Buyer.

in

which

case

Buyer

shall

pay

all

such

charges.

This

warranty

shall not

apply

to

damage

resulting

from

abuse.

negligence.

accident

or

loss

or

damage

in

transit.

The

warranty

shall

be

voided

should

the

Buyer

attempt

any

repairs

or

alterations

without

prior

written

permission

of

RACAL-VADIC.

RACAL-VADIC

makes

no

other

warranty,

expressed

or

implied.

and

RACAL-VADIC

DISCLAIMS ANY IMPLIED WARRANTY

OF

MERCHANTABILITY OR

FITNESS

FOR

APARTICULAR PURPOSE.

THE

BUYER

AND

RACAL-VADIC AGREE

THAT

THE

SOLE

AND

EXCLUSIVE

REMEDIES

FOR BREACH

OF

ANY WARRANTY

CONCERNING

THE

GOODS SHALL

BE REPAIR OR

REPLACEMENT

OF

DEFECTIVE PARTS UPON

THE

TERMS

ABOVE

DESCRIBED OR.

AT

RACAL-VADIC'S OPTION, REFUND

OF

THE

PURCHASE

PRICE.

RACAL-VADIC

SHALL

NOT

BE LIABLE FOR

CONTINGENT

OR

CONSEQUENTIAL

DAMAGES

TO

PERSONS

OR PROPERTY AND ITS SOLE LIABILITY IS AS ABOVE

SET

FORTH.

Any

action by Buyer for

any

alleged

breach

of the

warranty

set forth

herein

shall be

brought

to

the

attention

of

RACAL-VADIC by

Buyer

within

the

warranty

period,

but

not

later

than

30

days

after

the

alleged

Breach.

THIS

STATEMENT

OF

WARRANTY AND

LIMITATION

OF

LIABILITY IS ACOM-

PLETE

AND

EXCLUSIVE

STATEMENT

OF

ALL WARRANTY

AND

LIABILITY

REPRESENTATIONS

OF

RACAL-VADIC.

It

may

not be varied.

supplemented,

qualified

or

interpreted

by

any

prior

dealings

between

the

parties

or

by

any

usage

of

the

trade

or

upon

the

face

or

reverse

of

any

form to

which

this is

attached

or

a

part

of,

nor

may

it

be

modified

by

any

agenl.

employee

or

representative

of

RACAL-VADIC

unless

such

modification

or

representation

is

made

in

writing

and

signed

by a

duly

authorized

of-

ficer

of

RACAL-VADIC.

Repairs

and/or

replacement

under

the

terms

of

this

warranty

SHALL NOT EXTEND

THE

WARRANTY LIFE

OF

THE

ORIGINAL

EQUIPMENT

SUPPLIED.

Equipment

returned

lo

the

factory

should

be

accompanied

by

the

following

information:

the

reason

for

return.

with

a

comprehensive

description

of

the

malfunction;

shipping

instructions:

and

the

name

and

telephone

number

of

a

contact

in

the

event

of

problems.

Further

inquiries may be

directed

to RACAL-VADIC's Diagnostic

Center

at (800) 22-VADIC

or

(800) 228-2342.

Racal-Vadic

222 Caspian Drive, Sunnyvale, California 94089-9874 Telephone (408) 744-0810

Printed

in

USA