Bell 103A Bedienungsanleitung

BELL

SYSTEM

PRACTICES

Plant Series

SECTION

591-014-100

Issue 5,

January

1961

AT&TCo Standard

DATA

SET

l03A

TYPE

IDENTIFICATION

AND

OPERATION

GENERAL

1.01

This sectio;n includes identification

and

op-

eration

Data

Set

103A type

(Fig.

and

2).

does

not

include

information

business machines used

with

this

type

data

set.

1.02

This

section is reissued

include

informa-

tion concerning

the

D35C-61

cord

which

replaces

the

D25C-61

cord

which is

Manufacture

Discontinue

(MD).

Since

there

are

data

sets

using

the

D25C-61 cord,

information

concerning

this

cord

and

its

uses will be

retained

this

section.

1.03

Data

Set

103A

type

was

designed

simul-

taneously

transmit

and

receive low-speed

serial

data

rates

300

bauds

DATA-

PHONE*

service over

the

voice message switched

8-3/4

IN.

----\

-r-

network,

rates

150

bauds

TWX

service over

teletypewriter

exchange

type

facili-

ties.

*Service

Mark

the

American

Telephone

and

Telegraph

Company

(1)

Data

Set

103A1 is used -

• with customer-provided business

machine

computer-type

terminals

TWX-CE

stations,

• with customer-provided business

machine

computer-type

terminals

DATA-

PHONE

service

stations

systems

pro-

viding communications

with

3-row tele-

typewriter

equipment.

IN.

-------~

Fig. 1 - Data

Set

103A Type and Data

Auxiliary

Set

804B1

©American

Telephone

and

Telegraph

Company, 1967

Printed

U.S.A. Page 1

SECTION

591-014

100

Fig. 2 - Data

Set

103A Type and 567PB-61 Telephone

Set

(Manufacture Discontinue)

(2)

Data

Set

103A2 is

used-

•

with

customer-provided business machine

and

computer-type

terminals

DATA-

PHONE

service

stations,

but

•

not

with

customer-provided business

ma-

chine

computer-type

terminals

TA-PHONE

service

stations

systems

providing

communications

with 3-row tele-

typewriters.

1.04 A

Data

Auxiliary

Set

804B1

(Fig.

567PB-61 Telephone

Set

(MD)

(Fig.

2) is

required

for

external

control

the

data

set

and

for

establishing

the

data

set

transmission

path.

The

data

auxiliary

set

telephone

set

may

arranged

either

for

voice

communication

DDD

for

call

progress

tone

monitoring

only

TWX.

1.05

Data

transmission

is accomplished over

two

frequency

shift

channels.

The

fre-

quency

channel

used

each

station

during

connection is

determined

the

station

that

originates

the

call

(Table

A).

DESCRIPTION

2.01

Transmission

output

level options

and

dis-

connect options

are

provided by

the

strap-

ping

arrangement

TB1

(Fig.

3).

TABLE

FREQUENCIES

FREQUENCY

(Hd

STATION

SIGNAL

MODE

TRANSMITTED

DATA

SET

DATA

SET

lO3Al lO3A2

Originating

mark

) 1070 1270

space

) 1270 1070

Answering

mark

) 2025 2225

space

) 2225 2025

Page 2

ISS

5, SECTION

591-014-100

Fig. 3 - Data

Set

103A Type,

Top

View, Cover Removed

2.02

Components

Data

Set

103A

type

are

enclosed in a two-tone

gray

plastic

covl.~red

case.

The

cover is heI

place by

four

retaining

screws

the

base

(Fig.

4).

See

the

section en-

titled

Data

Set

103A

Type,

Maintenance

(591-014-300)

for

cover

removal

and

replacement.

2.03

Data

signals

th(~

data

set

interface

are

EIA

StaHdard

HS-2;;;2-A

(bipolar)

type.

2.04

Data

Set

Im~A

type

with

Data

Auxiliary

Set

804Bl

i')()7PB-61

Telephone

Set

(MD) is used

for

connection

a 2-wire

central

Page 3

SECTION

591-014-100

CONNECTOR

KS-19087,

(P4)

(TO CUSTOMER

SUPPLIED

CORD)

KS-19088,

(P5)

(TO

D25C

CORD

D35C-61

CORD)

RETAINING

SCREW

Fig.

4 - Data

Set

103A Type,

Rear

View

office

PBX

line.

The

data

auxiliary

set

telephone

set

is used

control

the

functions

the

data

set.

2.05 A block

diagram

the

Data

Set

l03A

type

shown

Fig.

illustrates

the

five basic

component

sections of

the

data

set

which

are:

•

Modulator

Data

transmitter

•

Demodulator

Data

receiver

•

Control

-Logic

and

timing

circuitry

• Line

circuit

Impedance-matching

trans-

former

and

ringing

detector

•

Power

supply

-Recti

fie

-+- 2.06 A

35-conductor

5-1/2

foot D35C-61

cord

-+-

for

connecting

telephone

circuits

data

set,

and

3-conductor

lO-foot

power

cord

KS-14532,

List

are

supplied

with

the

Data

Set

103A type.

Page

2.07 A 25-pin

connector

(KS-19087,

List

2) is

provided

the

rear

the

data

set

for

connecting

the

business machine.

This

connec-

tion is

made

with

customer-furnished

c'lble.

In-

terface

leads

present

this

connector

are

num-

bered

and

designated

shown

Table

2.08

The

Data

Auxiliary

Set

804Bl

is equipped

with

a D30C-61

5-1/2

foot

cord.

The

567PB-61 Telephone

Set

(MD) is equipped

with

D50J

-61

5-1/2

foot

cord.

2.09

The

data

auxiliary

set

is equipped

with

589AG key.

The

567PB-61

Telephone

Set

(lVID)

is equipped

with

a 589AC key.

Designa-

tions

and·

functions

these

keys

are

shown

Table

2.10

The

transmit

levels

both

the

low-fre-

quency

(originate)

channel

and

the

high-

frequency

(answer)

channel

can

individually

adjusted

rearranging

spade-tipped

straps

terminal

strip

TBI

the

data

set

(Fig.

3).

Strapping

information

can

found

Section

TELEPHONE

LINE

KEYS AND

TELEPHONE

MODULATOR

CIRCUIT

CONTROL

AND

TEST

LINE

CIRCUITS

CIRCUIT

r---

FILTER

DEMODULATOR

POWER

SUPPLY

ISS

SECTION

591-014-100

RING INDICATOR

DATA SET READY

DATA

TERMINAL

READY

CLEAR

SEND

DATA CARRIER DETECTOR

TRANSMITTED

DATA

RECEIVED

DATA

VOLT

INTE

RFACE

ECTOR

CONN

" 5

SA " 2

CUSTOMER

EQUIPMENT

> -

VOLT

-P

~-----+~.------------------~<

SIGNAL GROUND AS

111---+-----------------<

PROTECTIVE GROUND

Fig. 5 - Data Set 103A Type, Block Diagram

591-014-200.

This

feature

enables

compromise

equalization

the

transmitted

data

signals.

OPERATION

ATTENDED

STATION

OPERATION

3.01

The

transmission

path

for

the

originating

station

data

set

established

first

de-

pressing

the

TALK

button

the

associated

tele-

phone

set

data

auxiliary

set

and

placing

the

call

the

usual

telephone

manner.

3.02

the

answering

station,

ringing

current

will

cause

the

bell

ring

and

operate

cir-

cuitry

the

data

set

signal

the

business

machine

that

there

incoming

call.

also

prepares

the

data

set

for

the

answering

mode.

After

least

one

complete

ringing

cycle,

the

attendant

the

answering

station

should

de-

Page

SECTION

591-014-100

TABLE

INTERFACE

LEAD

DESIGNATIONS

PIN NO.

LEAD

AND FUNCTION DESIGNATION

PROTECTIVE

GROUND -Common to

signal

and

power

service

ground

TRANSMITTED

DATA

Customer

data

presented

data

set

RECEIVED

DATA

Data

output

presented

business

machine

CLEAR

SEND

Signals

business machine

tha

may

trans-

mitted

DATA

SET

READY

Signals

business machine when

data

set

the

data

mode

SIGNAL

GROUND -Common· to

frame

ground

and

power

service AB

ground

DATA

CARRIER

DETECTOR-

Signals

business

machine

that

data

car-

riel' is being received.

+POWER

Power

supply

(+20

volts)

-POWER

Power

supply

(-20

volts)

-P

DATA

TERMINAL

READY

-Business machine applies on ON condition

for

auto

answer

and

OFF

condition

disconnect

data

set

from

the

line

RING

INDICA

TOR

Indicates

presence

ringing

current

business

machine

on incoming

calls

press

the

TALK

button

and

lift

the

handset

trip

ringing

and

place

the

data

set

the

answer

mode.

voice

communication

option is provided,

the

attendant

may

stay

the

talk

mode

con-

duct

voice

communication

go to

the

data

mode

depressing

the

DATA

button.

3.04

the

end

the

1-1/2

second

guard

interval,

the

answering

station

will

transmit

mark

tone to disable echo

suppressors

toll

trunks.

Echo

suppressors

will

remain

disabled

long

any

tones

are

being

transmitted.

3.03

When

the

answering

station

DATA

button

is depressed

and

released,

the

TALK

but-

ton

automatically

released

and

timing

inter-

val

1-1/2

seconds is

initiated.

This

timing

interval

the

single-frequency

(SF)

guard

interval.

The

purpose

this

guard

interval

insure

the

receipt

off-hook

signal

the

originating

(serving) office

from

the

ans-

wering

station.

Page

3.05

When

the

originating

station

attendant

hears

this

mark

tone,

the

attendant

should

depress

the

DATA

button

until

the

DATA

lamp

lights.

When

the

DATA

lamp

li~hts,

the

DATA

button

should

be released. Release

the

DATA

button

causes

the

following to

occur

the

sequence

listed:

(1)

TALK

button

releases

(2)

Starts

a 1-1/2 second

timing

interval

ISS

SECTION

591-014-100

TABLE

KEY

ASSIGNMENTS

KEY

NUMBER

KEY

ILLUMINATED

DESIGNATION

DATA

AUX

567PB-61 FUNCTION

KEY

SET

804B1

TEL

SET

AUTO 1 6 A locking key used

provide

automatic

Yes

answer

incoming

calls

A locking key used

connect

send

and

LOCAL 2 5 receive

leads

together

and

disconnect

data

set.

This

permits

local

operation·

and

test

business

machine.

TEST

2 3 4 Nonlocking key used

test

data

set

under

the

direction

data

test

center

TEST

1 4 3 Nonlocking key used

test

data

set

under

Yes

the

direction

data

test

center

TALK

5 2 Locking key used to connect telephone

set

data

line

Nonlocking key used

shift

from

talk

DATA

6 1

data

mode (also

takes

data

set

out

test

Yes

mode

connected

error)

(3)

Transmits

mark

tone

answering

station

(1)

AUTO

button

is depressed

(alternate

auto

manual

answering

option).

(4)

Signals

business machine

originate

end,

over

the

interface

lead,

that

data

con-

nection is completed

3.06 Upon

receipt

mark

tone

the

answering

station,

the

station

signals

its

business

machine

over

the

interface

lead

that

the

data

connection

has

been completed.

Data

transmission

can

now begin.

3.07

For

detailed

description

data

set

operation, see CD-

and

SD-1D034-01.

AUTOMATIC

ANSWER

3.08

Calls

may

answered

automatically

when

either

the

following options

are

provided:

(2)

Strapping

option is connected

provide

permanent

automatic

answering

all

incoming

calls

(permanent

automatic

answer-

ing

option).

Use

this

option bypasses

the

AUTO button.. .J

3.09

With

the

set

arranged

for

automatic

answer,

ringing

current

will

cause

the

bell in

the

telephone

set

ring

and

relay

the

data

set

operate.

Operation

this

relay

trips

ringing

and

causes

the

data

set

change

the

off-hook condition,

providing

ON condition is

present

the

CD lead.

Under

these

conditions,

the

line

control

circuit

will

initiate

the

1-1/2

second

guard

interval.

From

this

point,

the

call

will

progress

previously described

3.05

and

3.06.

Page 7

SECTION

591.014.100

DISCONNECT

3.10 The connection

may

terminated

the

end

transmission by one

the

follow-

ing

options:

Automatic

(1)

With

INITIATE

DISCONNECT option

enabled: The

station

that

initiating

dis-

connect

must

momenta'rily apply

OFF

con-

dition to

the

lead. This causes

the

data

set

transmit

a 3-second

burst

spacing

tone. The frequency

the

ft space tone is

1270 Hz

for

Data

Set

103A1 and 1070 Hz

for

Data

Set

103A2 when

acting

originate

station.

The frequency

the

space tone

is 2225 Hz

for

the

Data

Set

103A1

and

2025 Hz

for

Data

Set

103A2 when acting

answer

Page 8

8 Pages

station.

After

transnlission

this spacing

tone,

the

station

will go to

the

on-hook con-

dition. Should

the

distant

station

arranged

for

RESPOND TO DISCONNECT option,

will recognize

the

space frequency

signal

for

1-1/2

seconds, disconnect

from

the

line,

and

the

on-hook condition.

(2) Without

INITIATE

DISCONNECT op-

tion:

OFF

condition on the

lead

will cause

station

to disconnect

and

go to

the

on-hook condition immediately.

Manual

Both

attendants

must

lift

handset, depress

TALK

button

(this changes the

data

set

from

the

data

mode to the

talk

mode),

and

restore

handset

to on-hook condition.

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