Page 1
BELLSYSTEM PRACTICES SECTION503-200-108
AT&TCo Standard Issue 2, March 1976
TELEPHONE SETS
881A102, 881B102, 881A103, 881B103, 881A104, AND 881B104
1. GENERAL
1.01 This section provides identification, installation,
and connection information for the 881A102
(MD), 881B102, (Antique Gold**, Fig. 1); 881A103
(MD), 881B103, (Mediterranean**, Fig. 2), and
881A104 (MD), 881B104 (Early American**, Fig.
3) DESIGN LINE* telephone (Cradle Phone) sets.
*Trademark AT&TCo.
**Trademark American Telecommunication Corporation
1.02 This section is reissued to:
• Add information on the 881B102, 881B103,
and 881B104 (modular) telephone sets (Table
A)
• Show 881A102, 881A103, and 881A104
telephone sets (MD).
Warning: TeIephone apparatus or wiring Fig. 1--$881B102 DESIGN LINE Telephone Set_l
shall not be installed in a location where
minimum separation from other wiring as
specified in Section 460-300-149 cannot be are equipped with a plug-ended H4DU handset cord
maintained, instead of an H4EB cord._
1.03 The customer's premises must be properly
wired with an appropriate connecting block Ordering Guide (Refer to Table A)
or jack in order to accept the D4BU-29 plug-ended
mounting cord or the 225A adapter shipped with 2.02 Basic Telephone SetOrderinglnformation:
each set.
2. IDENTIFICATION antique gold cradle phone equipped with a
2.01 SThe 881A102, B102, 881A103, B103, 881A104,
and B104_, (Rotary Dial) equipped telephone YRefer to Table A for available codes and
sets are new DESIGN LINE telephone sets being ordering information.
made available to the customer. The customer
buys the housing and handset from the telephone 2.03 These telephone sets are intended to be
company and the telephone company retains used as single line or two-party desk sets
ownership of the transmission and signaling and are not recommended for use on four- and
components. (Fig. 4 and 5). SThe B code sets eight-party service.
NOTICE
Not for use or disclosure outside the
Bell System except under written agreement
Printed in U.S.A. Page 1
Example: Set, Telephone, 881B102t is an
rotary dial.
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SECTION503-200-108
Fig. 2--881A103 DESIGN LINETelephone Set i,:,_:i:i'_:_
Fig. 4--Customer-Owned Components
Fig. 3--881A104 DESIGN LINE Telephone Set
Page 2
3. INSTALLATION AND CONNECTIONS
3.01 These telephone sets are furnished from
the factory fully assembled and wired for
bridged ringing. To connect the telephone set,
plug the mounting cord into a 625A connecting
block or if the existing jack is a 548A or equivalent,
use the 225A adapter furnished with each set.
3.02 The internal connections for the 881A102,
881B102, 881A103, 881B103, 881A104, and
881B104 telephone sets, for nonkey system use, are
shown in Fig. 9.
3.03 Connections for 1A KTS do not require any
telephone set modifications and are wired
same as Fig. 9.
3.04 Connections for use with 1A1 or 1A2 KTS
are shown in Fig. 10. Table C includes
necessary wiring modifications required for 1A1 or
1A2 KTS use.
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ISS 2, SECTION 503-200-108
NOTE:
LINE ALL
SWITCH NOT SHOWNARE
CUSTOMER-OWNED
TRANSMITTER
CONNECTORS
4228-TYPE
NETWORK
ASSEMBLY
H4DUHANDSET CARD
CORD(B CODE HOLDER
SETS ONLY) ASSEMBLY
3.05 To gain access to the interior of these sets 4. REMOVAL OF TELEPHONE COMPANY-OWNED
for wiring changes, refer to appropriate COMPONENTS
paragraph in Part 4.
3.06 Line and Ringer Connections: 4.01 When it is desired to discontinue telephone
(1) For single line and two-party service, refer
to Table B.
(2) For adjustments and ringer cutoff feature to Fig. 5 for identification of company-owned
of the PIA ringer, refer to Section 501-259-101. components.
ASSEMBLY UNIT
PIA RINGER
AND RESONATOR
T_
6U-120 OR
6UA-t20
D4BU-29
MOUNTING
CORD
Fig. 5_l)Telephone Company-Owned ComponentMI
service of these DESIGN LINE telephone
sets, proceed as follows:
Note: Remove the telephone company-owned
components that can be easily removed. Refer
DIAL
T!
TRANSMITTER
UNIT
LB-TYPE
RECEIVER
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SECTION503-200-108
I_TABLE A 4
AVAILABLE CODES AND ORDERING GUIDE
TEL SET TEL SET TRMTR RCVR MTG HANDSET
CODE
BASE UNIT UNIT CORD CORD
DIAL DESCRIPTION
Rotary Dial
881B102 H4DU-58 Antique Gold
881B103 840404941 H4DU-03 Mediterranean
Cradle Phone
Rotary Dial
Cradle Phone
Rotary Dial
881 B104 H4DU-03 Early American
6U-120 Cradle Phone
" or T1 LB1 D4BU-29 Rotary Dial
881A102" 6UA-120 H4EB-58 Antique Gold
881 A103" 880A H4EB-03 Mediterranean
Cradle Phone
Rotary Dial
Cradle Phone
Rotary Dial
881 A104" H4EB-03 Early American
Cradle Phone
*MD
(1) Remove four bottom cover mounting screws SOTTOMCOVEn
from bottom of telephone set and remove MOUNTINGSCREWS
bottom cover (Fig. 6).
(2) Remove four telephone set base mounting
screws and withdraw the base (Fig. 7).
,,
(3) Remove three dial mounting screws and
remove the rotary dial (Fig. 8).
(4) Unscrew transmitter and receiver caps and
remove T1 transmitter and LB1 receiver
units.
(5) Replace bottom cover (Fig. 6).
4.02 Follow local procedures for returning telephone
company-owned components.
4.03 When it is desired to return a set to Western
Electric for repair, it should be packed using
the D-180600 Kit of Parts which contains packing Fig. 6--881A102, 881A103, or 881A104 Telephone
materials and instructions. Set, Bottom View
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TELEPHONE SETBASE
MOUNTINGSCREWS
ISS 2, SECTION 503-200-108
Fig. 8mRemoving Dial
Fig. 7mRemoving Telephone Set Base
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SECTION 503-200-108
TABLE B
LINE AND RINGER CONNECTIONS t
WIRE OR LEAD COLOR OR
InsideWire at R R R R R R
Jack G G G G G G
623P4 Line Jack R A A L1 F F
Assy G L1 L1 A L2 L2
Ringer R K K K K K
Line Switch Y A A A L2 L2
• Insulatedand stored.
t For accessto setwiringfollow applicablestepsin Part 4.
Y Y Y Y Y Y
BK B B B B B
Y G G G G G
BK L2 L2 L2 * *
S-R * * * * L1
S * * * L1 *
BK L1 G G G G
W F F F B B
623P4 Line
Jack Assy
* For access to telephone set wiring follow applicable
INDIVID. TIP PARTY
BRIDGED GROUND 1000_'2 2650_'2
MODIFICATIONS FOR 1A1 OR 1A2 KTS*
LEAD COLOR REMOVE CONNE(_T
Line
Switch
Ringer BK L1 F
steps in Part 4.
RING
PARTY NO IDENT IDENTIFYING GROUND
TABLE C
NETWORK TERMINAL
FROM TO
S A L2
Y A L2
BR C G
G L1 A
W F C
G L1 F
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ISS 2, SECTION503-200-108
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SECTION503-200-108
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8 Pages
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