Bell 503-200-109 Service Manual

BELLSYSTEMPRACTICES SECTION 503-200-109
AT&TCo Standard Issue 2, January 1976

TELEPHONE SETS

881A105, 881A106, 881A107, 881A108, 881B105, 881B106,

881B107, AND 881B108

1. GENERAL

1.01 This section provides identification, installation,

and connection information for the DESIGN

LINE* telephone sets (Candlestick *_) (Fig. 1).

*Trademark AT&TCo.

**Registered Trademark of American Telecommunication

Corporation.

Warnlng: Telephone apparatus or wiring

shah not be instalIed in location where
minimum separation from other wiring as

specitied in Section 460-300-149 cannot be
maintained.

1.02 This section is reissued to:

• Add information for the 881B105, 106, 107,
and 108 modular telephone sets

• Change Fig. 7 and 8

• Add Fig. 9 and 10.

1.03 The customer's premises must be properly
wired with an appropriate connecting block

or jack in order to accept the D4BU-29 plug-ended
mounting cord or 225A adapter furnished with each
telephone set.

2. IDENTIFICATION !i!!_

2.01 The 881A105, 881A106, 881A107, and 881A108 .......

(rotary dial) equipped telephone sets are

new DESIGN LINE telephone sets being made
available to the customer. SThe 881B105, 106, Fig. I--881A105 or 881B105 DESIGN LINE Telephone

107, and 108 telephone sets, are the (rotary dial) Set
equipped modular telephone sets.Q The customer

buys the housing from the telephone company and

Not for useor disclosure outside the

Bell System except under written agreement

NOTICE

Printed in U.S.A. Page 1

SECTION503-200-109

the telephone company retains ownership of the 3.06 Line and Ringer Connections:
transmission and signaling components. (Fig. 2

and 3). (1) For single line and two-party service, refer

Ordering Guide (Refer to Table A)

2.02 Basic Telephone Set Ordering Information: of the P1A ringer, refer to Section 501-259-101.

Example: Set, Telephone, 881A105t is a 4. REMOVAL OF TELEPHONE COMPANY-OWNED
black set equipped with a rotary dial (Fig. 1). COMPONENTS

tRefer to Table A for available codes and 4.01 When it is desired to discontinue telephone
ordering guide, service of these DESIGN LINE telephone

2.03 These telephone sets are intended to be

used as single line or two-party desk sets Note: Remove telephone company-owned

and are not recommended for use on four- and components that can be easily removed. Refer
eight-party service, to Fig. 3 for identification of company-owned

3. INSTALLATION AND CONNECTIONS the bottom of the telephone set and remove

3.01 These telephone sets are furnished from

the factory fully assembled and wired for (2) Remove one dial frame and two line switch
bridged ringing. To connect the telephone set, mounting screws from the base and remove
plug the mounting cord into a 625A jack or if the dial frame and line switch (Fig. 5).

existing jack is a 548A or equivalent, use the 225A
adapter furnished with each set. (3) Remove one network, two ringer and three

3.02 The internal connections for the 881A- and remove network, ringer and dial (Fig. 6).

881B-type telephone sets, for nonkey system

use, are shown in Fig. 7 and 9. (4) Unscrew transmitter and receiver caps and

3.03 Connections for 1A KTS do not require any

telephone set modifications and are wired (5) Replace dial frame and base using four screws

same as Fig. 7. removed in Step (1), see Fig. 4.

to Table B.

(2) For adjustments and ringer cutoff feature

sets, proceed as follows:

components.

(1) Remove four base mounting screws from

bottom base (Fig. 4).

dial mounting screws from the base and

remove T1 transmitter and U3 receiver units.

3.04 Connections for use with 1A1 or 1A2 KTS 4.02 Follow local procedures for returning telephone

are shown in Fig. 8 and 10. Table C includes company-owned components.

necessary wiring modification required for 1A1 or
1A2 key telephone system use. 4.03 When it is desired to return a set to Western

3.05 To gain access to the interior of these sets the D-180600 Kit of Parts which contains packing

for wiring changes, refer to Part 4. materials and instructions.

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Electric for repair, it should be packed using

ISS 2, SECTION 503-200-109

DIAL MOUNTING
FRAME

Fig. 2mCustomer-Owned Components

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SECTION 503-200-109

Fig. 3---I_Telephone Company-Owned Components_l

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