Bell system practices Spokesman 107 series User manual

.

'-

••

BIU

SYST

EM

l't

A

CTICES

AT&

TCo

Standard

SICTION 463-22

1-1

00

tu

~

I,

Jo

nuory

1910

LOUDSPEAKER

SET

- 1

07

TYPE

IDENTIFICATION

,

IN

S

TALLATION

,

CONNECTION

,

OPERATION

,

AND

MAINTENANCE

"

SPOKE

S

MAN

"'"

LOUDSPEAKER

1.

GfN

ERA1

1.

01

This section provides information

on

the

SPOKESMAN loudspeaker,

107A

(MD)

and

1078 loudspeaker sets (Fig. I,

2,

and 3).

1.02

This

section

is

reis:s:

ued to:

• Add information on the 02N-50 cord

• Expand information on wiring

to

sinah~·line

telephone sets

• Identify typical

grandfath

ertd

and registered

wiring arrangeme

nt

$.

2.

IDENTiftCA

TtON

2.01 Purpose:

2.

02

•

To

amplify

the

incoming

side

of

a

te

lephone

com•er53tion using the 107A (MD)

or

1078

loudspeaker set.

• Toprovidevoicesi

gnaling

on

ma

nual intercom

lines using

the

una

loudspeaker

set

(see

S.e1ion

518-0

1

0-109).

Applicatio~~:

•

For

use

with

station

sets

on CO. PBX,

or

Centrex lines

• Special application

s.

aueh

as

private

service

systems

•

107B

loudspeaker set may

be

u

~

as a

SPOKESMAN

loudspeaker

or

Cor

voice

signali

ng

on manual intercom, but the

same

107B

ca

nn

ot

be

u

sed

Co

r both applications

at

the same 'ime.

See

Section 518-010-109

Cor

installation, connection, a

nd

operation

oC

1

078

loudspuker

se-

t installed for voice

signaling on manual intercom.

2.

03

Ordering

Guide

:

• Set, Loudspeaker, 107J3.•.

• Cord, Mounting,

D4BT-87

(available in 1· or

14-foot length

s)

-f

or

use

with

107A

(

MD)

loudspeaker

set

• Cord, Mounting, 06AF·8'7 (available in 7-,

14·,

or

25-foot lengths

)-

Cor

u.

se

with 1078

loudspeaker

&el

• Housing, S.1, Loudspeaker (see Table A

).

(b) A1sociated A,pparatut (

ord•

r

sep

a

ra,ely

if

r e

qu

ired

)

• CapaciTor,

542C

(0.25 "F)- see paragyaph

3.

11

Cor

use

NO

na

Not for

liM

or

dbdoturt

outticM

the

0.11

S)'tttm

uttpt

undtr

wrht.ton

&gl'ftmttlt

Print~

in

U.s.A.

...

. 1

SICTlON

46

3·221·1

00

• Rtoia1or,

KS-14603LSA

(619ohm)

or

<quinltnt

rttittor

be-tween

6000'

and

6400

with

powtr

ratina

of

2

waus

minimum-IN

paracraph

3..11

for

UH

•

Connector,

0·161488

• Transformer, 20120

• Clamp,

2A

-used

on

20120

tnnlformer

•

Bloek,

Connfetin.g.

.WA

• tCorcl. DIBT-87-used

as

auxiliary

eorcl

btt•

·

ttn

connetting

block

ud

telephone

ld

•

O>rcl.

D2N-$0-usedtomnnoct

SPOKESMAN

loudspeaker to

2991C.cype

telephone

.....

.

•

The

107A

(

MD

)

ls

equipped

wit

h a

tra

nsi

stor

amplifier end loudspeaker

utembly

with a

power

swite

h

and

volume t!Ontrol

and

can

be

used

u

a

SPOKESMAN

loudJpeaker.

• The

10'78

ia equipped

with

an

in

ttgrated

cir<Uit

(IC)amplifiorandto.ldtpea);er-mbly

wil.h

a

pc;nr.-u

switch and volume oonttol.

The

1078

can

be used

as

a

SPOKESMAN

loudtpuker or

to

provide

volee

airn.aling on

manual

int.ereom lines,

but

not

both

simultaneously.

•

Ooth

loudspeaker sel4 can

be

uaed

on

aU

telephol'le

&eLl

or

subsuiber eett equipped

with induction coils

or

networh.

3.

INS

TAUATIOH

3.

01

An txtt.rnal at:or

de

power

JOU.rt:e

i.a

requir«l.

This powtr

1111.)'

be provided

by.

• A 20l20

tra.naformer

• The

18•\'0lt.

ac terminals

or

available power

plant

(mallli

mum

current drawn

by

10'18

at

18·voltt

ac

I•

50

mA

RMS)

• A 24·volt

key system

batury

(ma.ximum

c:urrtnt

drav.·n

by

10'78

at

24

·volt.t

de:

is

50

mA

d<)•

.._

2

102 When a 20120 lrt.ftsformtr

is

used for

power,thec:uttomer

mutt

provide

a

~tparately

fused

K

l'«'t'ptacle whic:h

i.t

aol

under

mnuol

of

a switeh.

3.03 The maximum ltngth or

IW

cable

used

between

the

power supply

specified

in

paragraph 3.01 and

loudt~a

ker

~t

should not

exceed

200

leet.

3.

04

The

ma.ximum

length

of

IW

eable used

between theloudspeaker

tel

andtheassoeiattd

teltpbo

..

ttl

should

not

u<Oed

100

!ttL

3,

05

The

IoudJpea);er

atl

can

be

inst.allod

up

"'

1000

feet

or

50

ohms (maximum) from

power aad

a(analeouru

when power and signal

Ia

provided over the aame cable

pa.ir

(see

pa.ra,graph

3.11).

3.

06

The loudopeahr

101

should be aeparated

from the auoclatOO telephone

set

by

a

minimum of 3 feet

to

prevent

feedba.ek.

•.

IMt•••

Sil

.

th

Line

T

ehpt.

..

Set

3.07 t

ln•wl

the

IOTA

(

MD)

or

1078

loudJpea);•r

tet

inl'fli,lttrtdor

rrudfathtrtd

&JT1Jllt1Df:Dtl

u $bown in

Fia

. •.

5.

or 6.

ln

grandfathered

arra.ngem~t.l

or

when

UMd

with

key

telephone

M-tl, power

may

be

supplied via telephone

tel

mounting

c:ord

leacll.

when

avaHable. Regjstered

arra

nae.men

t.a

should

bt

connected as shown in

Fig. 4 or 6.

All

connections

are

eoncentraled

at

the

44A

connecting block. The auxiliary

048T

cord

or

lW can

be

taped

to

the eet mounting cord

or

fastened in the

Itt

at

.any

oonvt.nie.nt

loeation..

The (G) and (R) eonductors

are

terminated in the

..,

ptr

Table

8

and tho

(Y)

and

(

8K

)

l...ts

are

iutUlated

and

aU>red.

3.

01 U

spare

ttadl

an

not available in the

uJephone

Mt

mount.ing

cord ineraodfathered

or

key

set inataHationt. con.oett u desuibed in

par~ifaph

3.07

usinga

.WA

con

netting

block

(Fia:.

4,

5.

or

6)

or

one

of the

following

ways.

..

(I)

t

it

tho loudopcaker

..

,

mrd

is terminated

directly

in

the telephone set, run a separate

power cord

or

wire

to

the loudspeak

er

set

a.

nd

terminate

dirt!etl:

y to the

po11o·e.r

auppJy

terminals

u

th...,

in Pia. 9 and 10. lnJulate and

siAire

.'

'•

-•

•

I

both

end&

of

the (Y)

and

(BK)

leads

of

the

loudspeaker

set

cord.

(2) Again, with

the

Joudspeaker

set

cord

terminated in the

te

lephone set. run

the

power to the

te

lephone

set

and

connect

to

the

(Y

) and

(8K)

leads

of

the loud>peak

er

set

cord

using spare

te

rm

inals or

0..161488

oonnectors

.t

6-8utton

r.t.phone

Set

3.

09

When

the

107-type l

ou

dspeaker

set

is used

with a key telephone

set.

connect

as

shown

in Table B

and

Fig. 9 [for

107A

(MD))

or

Fig.

10

(for

1078).

3.

10

When the

107

-type loudspeaker

set

is:

used

witha

CA

LL

DIRECI'OR

&e4

bring loudspeaker

cord directly into the telephone

set

(Fig. 4).

Th

e

power

supp

ly may

be

brought into the telephone

set

over spare cord conductors

and

connected to

the

loudspeaker

set

oord using

spare

terminals or

0·161488

connectors.

Insulate the connectors

and

the wing band

or

the cord with tape and

store

..

Insulate

and

store the unused

BL

and

W leads

if

a

1078

is

used.

3.11

To install the 1

07A

(

MD

) and B loudspeaker

sets

using a single-house eable

pair

for

power and signal, refer to Fig. 7

and

8. The coil

with a

1:1

(600:600 ohm) ratio

(94

E

or

equh•atent)

is used

at

the signal input end of the cable pair.

Connect

48

-

\•o

l

ts

de

10

the

secondary (SIMPLEX)

of

the

coil, Install the 0.25

11F

(S42C)

capacitor

and a

619

-ohm resistor

(KS-14603L3A

or equivalent

~istor

between 6000 and 6400 with power rating

of 2 watts minimum)

at

the 107-type loudspeak

er

sel

. The pigtail leads

o(

the

res

i

stor

and capacitor

are

secured under screw terminals inside-

the

loudspeaker

stt

. Thecapacitor blocks direct

current

from the signal input. The resistor provides the

necessary voltage drop in order

to

supply co

rr

ect

voltage

to

the

-loudspeaker

set

and

to

pre

...

ent

the

loudspeaker

set

power supply from short-eircuiti

na

thespeech transmission path. Theblockingeapaei

to

r

Cl

and the dropping

res.

i5tor Rl

must

be added

locally. The leads should

be

cut

short

or insulated

to avoid interference with other component$. The

green and yel

low

cord conductors of the 1

07A

(

MD

)

and

the

Kreen, yellow, blue,

and

white cord

conductors of

the

1078

are

not

used in this

ISS

8,

SECTION

463-221-100

arrangement. They should

be

terminated

as

sh

o

wn

in Fig. 6 and

7.

3.

12

t A

D2N-50

cord

is

available for supplying

SPOKESMAN

servicein

299

1C-type

te

lephone

sets

. The

te

lephone-

set

end is equipped with a

963.type eonneetor

and

the opposite end

has

spade-

tips for

conneoctin.a:

to the \•

Oiee

circuit of the

loudspeak

er

set. either through the loudspeaker

~t

cord

or

directly on the terminaJ

J..

•

4.

CONNECTIONS

4.

01

When

u&ed

as

a

SPOKESMAN

loudopeaktr,

connect

the

107A

(

MD

) and B loudspeaker

sets

to

telephone

set

r«eiver

circuit. whieh is under

eontrol of

the

switc.hhook and of

f-n

ormal dial

contacto (see

Tab

le B

).

4.02 The schematic and a typical connection for

the 1

07A

(MD) loudspeaker is shown in

Fig. 9.

4.

03

The schematic

and

a typical connection

Cor

the 1078 loudspeaker is shown in Fig. 10.

The

(R) a

nd

(G) leads

of

the

06AF.s'l

mounting

cord connect

to

screw termin

als

5

and

6 and

are

speech leadawhen

th•I078

ia

u&ed

as

a

SPOKESMAN

loudspeaker. The (BL) and (\V) leads, terminated

on

scre-w

termina.ls 3 and 4,

are

speech leads for

..

·oiee signaling

on

manual intercom and are not

u&ed

f

or

SPOKESM

AN

service.

The

(Y)

and

(BK)

leads of the 06AF-87

mou

n

ting

cord

are

for

powe

r

connections..

4.04

Fo

r connection to speci

a.l

applications such

as

a

private

sendee

system,

refer

to

appropriate associated equipment sections.

5.

<l'UATION

SPOkSMAH

LOUDSPUJCH

5.

01

Th

e telephone

set

used in conjunction with

the 107·type loudspeaker

set

is used in the

n

or

mal manner. The handset of the telephone

set

mu

st

be

off-hook

to

use the loudspeaker

set

.

5.02 Operate loudspeaker as follows;

(I)

Turn

ch• ON·OFF switch on the face

of

the

107-type loudspeak

er

set

clockwise. This

connects the power

supp

ly

to

the

107·type

loudspeaker set.

SfCYIOH 463-221-

100

(2t

Adjust

the

\

'O

ft.lme

to

a

satiafaetory

level.

(3)

((

the loudspeaker

set

..

t.inp.

..

inc.reut

tht

distance between the

handtet

and

the

loudspeaker set.

or

readjust

the

volume

control

to a lower lt\'

el..

5.03

Turn

the

loudspeaker

set

off

when

not

in

uso

.

6. MA1NTENANa

Vo.ke

Pogi.ftt

_,..

Moftlol<li

lftr.rtom

{r

efer

N

Stc11en

S1t-010-109)

6.

01

For maintenante of the

usodated

telephone

set,

refer

to

the section coverinK the type

of

.et

in\·olved.

6.

02

Mn

intena.ne:e

or

the

107-type

loudt

puker

Ht

11

limited

to

replacem

ent

of

the

moun

dng

eord

and

h

ous

ing.

6.

03

To

rt

mO

\

't

housing. remove

the

two ttreW'I

in

1he

bue

or the

..

~

Carerully lirt the

houtina up and off.

To

repla.ce

hOI.ls:ing.

carduUy

ptaee housing

0\'tr

base

a

nd

secure

in

plut

with

t•·o

Krewt

in base

of

set.

6.04 To replace the cord. remove

hou-•in

c u

dtteribtfrd

in

paragraph

6.03. M

ountin

g

ro

rd

to

nnec-tions for

the

10'7A

(}!D) loudtpta.

ker

Mt

are

shown In

Fir

. 9

and

Fig. 10 shows

the

mounting

tord

connectio

ns

ror

the

1078

loudspeaker

tel

.

Rep

la

ce

the housin

fl

as deseribtd in

pa

ragraph

6.03

.

.....

•

2-STAG£

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;;

"

HOUSING SCREWS / v9

ISS

8,

SECTION

463·221-100

;"

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ISS

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SICT-

463-221-100

TABLE 8

CONNECTIONS TO TELEPHONE SET

FOR

107A (MD)

AND

1078

LOUDSPEAKER

SETS

(A

AND

G LEADS)WHEN

USED

AS

SI'OKESMAN®

LOUDSPEAK

ER

STATION

SIT

TERMINALS

TeleJ:!hone

Sets:

332

,334

Connect

to

BB

o!

dial

and R

of

induction

coil.

302, 304,305, Connect

toW

of

dial

306, 354,356. and R

of

induction

401, 402. 410, coil.

411,412,andaU

440 and 460 types.

500,600,700,

Connect

to

Rand

GN

and

800

series

of

network

.

500,600,700.

Connect

across

and

800

~rles

rectiwr

(see

set

and

with 1035-

or

dial

con

nec

tio

n

1036-typedials sections).

1500, 1600, Connect

acl'OII

1700,2500, receiver (see

set

2600, 2700, connection section).

2800, 3500, 3600

960

,2960

series

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