Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance page 28

SECTION 503-603-101
$ TABLE C (Contd)(I
CONNECTIONS - 2872A1M OR 2872A2M TELEPHONE SET WITH
ONE-TOUCH CALLING USING 3B (MD) SPEAKERPHONE
.............................. - _
CONNECT
LEAD TEL SET FROM TO
APPARATUS (NOTE 1) .....
149B ADPT
CONT UNIT
t _NOTE 2_ _OlO_
CORD)
......
DESJG i COLOR FROM TERM. 55A 55B TERM.
II I II m _ [ Ill I II II I I I I I I 1 I II II I
95B-Type AC1 _ 3B §
Pwr Unit
I I _ .....
AC2 i 4B §
I .....
2012B (MD) AC1 _' 27 27
or ' ! ........
2012D Trnsf AC2 ! 36 36
..................
Note 1 Plug telephone set mounting cord into 149B adapter.
Note 2. When 55A control unit is used, it must be the type modified for TOUCH-TONE, and
strap terminals 20 and 21 (55A) or 4 and 5 (55B).
* Insulated and stored.
t Terminal on network.
To reduce loudspeaker volume, move SP2 lead to terminal 24 (55A) or 30 (55B).
§ Insulate and store (BL-V) and (V-BL) leads in connector cable.
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