At&t 940 series Guide

BELLSYSTEM PRACTICES SECTON503-200-104

AT&TCo Standard Issue2, February 1975

TELEPHONE SETS

940-TYPE

IDENTIFICATION, INSTALLATION, AND CONNECTIONS

1. GENERAL

1.01 This section provides identification, installation,

and connection information for the 940A,

940B, and 940C (Fig. 1) DESIGN LINE* telephone

(Celebrity)sets.

* Trademark

1.02 This section is reissued to:

e Add D-180600 Kit of Parts

e Add new Fig. 4, telephone company-owned

components

e Remove Uniform Service Order Code (USOC)

and D-Kit of Parts, Table A

Warning: Telephoneapparatusorwiring

shall not be installed ina location whereFig. l1940-Type DESIGN LINETelephone Set

minimum separation from otherwiring as

speciHed in Section 46_30_149 cannot be

m_dnt_dned.Ordering Guide (Refer to Table A)

1.03 The customer's premises must be properly 2.02 BasicTelephone SetOrderinglrfforma_on:

wired withan appropriate jack in order to

accept the D4BU-29 plug-ended mounting cord

and/or 225A adapter furnished witheachtelephone Example: Set, Telephone, 940A40-50tisan

set. ivory set equipped with a rotary dial and a

chrome trim applique (Fig. 1).

tRefer to Table A for available color and

2. IDENTIFICATIONapplique information.

2.03 These telephone sets are intended to be

2.01 The 940A, 940B, and 940C rotary dial equipped used as single line or two-party common

telephone sets are new DESIGN LINE battery desk sets and cannot be used on four- and

telephone sets being made available to the customer, eight-party service.

The customer buys the housing, handset, and

decorative features from the telephone company 3. INSTALLATIONAND CONNECTIONS

and the telephone company retainsownership of

the transmission and signaling componentswhich 3.01 These telephone setsare furnished from

are mounted on a removable base and incorporated the factory fully assembled and wired for

in the handset (Fig. 2, 3,and 4). bridged ringing. $The P1A ringer is shipped from

Printed inU.S.A. page 1

SECTION503-200-104

jack is a 548A or equivalent, use the 225A adapter

furnished with each set.

3.02 The internal connections for the 940-type

telephone sets nonkey system use is shown

in Fig. 7.

3.03 Connections for 1A KTS do not require any

telephone set modifications and are wired

same as Fig. 7.

3.04 Connections for use with 1A1 or 1A2 KTS

are shown in Fig. 8. Table C includes

necessary wiring modifications required for 1A1 or

1A2 key telephone system use.

3.05 To gain access to the interior of these sets

for wiring changes, refer to Part 4.

3.06 Line and RingerConnections:

(1)For single line and two-party service, refer

to Table B.

Fig. 2--Customer-Owned Components 940A or 940B

Telephone Set (2) For adjustments and ringer cutoff feature

of the P1A ringer, refer to Section 501-259-101.

4. REMOVAL OF TELEPHONE COMPANY-OWNED

COMPONENTS

4.01 When it is desired to discontinue telephone

service of the 940-type design line telephone

set proceed as follows:

$Note: Remove the telephone company-owned

components that are screwed to the base or

can otherwise be easily removed. Refer to

Fig. 4 for identification of company-owned

components.41

(1) Remove handset cord from handset and

telephone set base.

(2) Remove mounting cord from telephone set

base and wall jack or adapter.

Fig. 3---Customer-Owned Components,940C Telephone

Set (3)Remove three housing mounting screws

located on bottom outer edge of the baseplate

(Fig. 5 or 6).

the factory with the bias spring in the low bias

position._lTo connect the telephone set, plug the (4) Remove upper and lower housing by lifting

mounting cord into a 625A jack or if the existing them off.

Page 2

ISS 2, SECTION 503-200-104

Fig. 4---OTelephone Company-Owned Components_l

STABLE A(I

ORDERING GUIDE

TEL SET DISPLAY PLASTIC DIAL INSERT TRIM HANDSET MTG

TEL SET DIAL

COLOR COLOR COLOR CORD CORD

CODE CODE

940A40-50 940AD40-50 Chrome Chrome H4DU-50

940B40-50 940BD40-50 Ivory Gold Gold

940A40-62 940AD40-62 Chrome Chrome

........ Blue H4DU-62

940B40-62 940BD40-62 Gold Gold 8H D4BU-29

940C40-50 940CD40-50 Chrome Chrome

Ivory H4DU-50

940C41-50 940CD41-50 Gold Gold

940C40-62 940CD40-62 Chrome Chrome

Blue H4DU-62

940C41-62 940CD41-62 Gold Gold

..,

Page 3

SECTION 503-200-104

TABLE B

LINE AND RINGER CONNECTIONS

(940-TYPE TELEPHONE SETS)t

INDIVID. TIP PARTY

WIRE OR LEAD COLOR OR RING IDENTIFYING GROUND

PARTY NO IDENT

BRIDGED GROUND1000_"_ 2650,(9.,

R R R R R R

InsideWireG G G G G G

atJack y y y y y y

BKB B B BB

R A A L1 F F

623P4 Line Cord G L1 L1 A L2 L2

Jack Assy Y G G G G G

BK ......L2 L2 L2 * *

R K K K K K

Ringer S-R * * * * L1

S * * * L1 *

BK L1 G G G G

Line Switch Y A A A L2 L2

W F F F B B

• Insulated and stored.

t For access to set wiring follow applicable steps in Part 4.

(5) After removing telephone company-owned

components reassemble upper and lower

housings using the three housing mounting screws

(Fig. 5 or 6).

TABLE C

MODIFICATIONS FOR 1A1 OR 1A2 KTS

(940-TYPE TE LEPHONE sET)* 4.02 Follow localprocedures for returning telephone

company-owned components.

NET TERM.

LEAD COLOR REMOVE CONNECT

FROM TO 4.03$When itis necessary to return a set to

S A 'L2 Western Electric for repair,it should be

packed using the D-180600 Kit of Parts which

Y h L2 contains packing material and instructions.0

Line

Switch BR C G

G L1 A

W F C

623P4 Line Cord G L1 F

Jack Assy

Ringer BK L1 F

* For access to set wiring follow applicable steps in Part 4.

Page 4

ISS 2, SECTION 503-200-104

Fig. 5--940A or 940B Telephone Set, Bottom View

Fig. 6_940C Telephone Set, Bottom View

Page 5

SECTION 503-200-104

Page 6

ISS2, SECTION503-200-104

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