Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance page 17

ISS 5, SECTION 503-603-101
TABLE B
CONNECTIONS - 2872AIM OR 2872A2M TELEPHONE SET WITH 3B (MD) SPEAKERPHONE ONLY
.... , , i ,
CONNECT
,, ,
LEAD
TEL. SET FROM TO
APPARATUS (NOTE 1) 149B ADPT
CONT UNIT (D10R
(NOTE 2)
DESIG COLOR CORD)
TO PSB
FROM
TE RM. 55A 55B TERM.
, , , , , , , ,, , = ,,,, , , , , ,,
T1 V-G * 2 19 1 8A
R1 G-V * 11 28 10 7A
A1 12 2 A1
AG
V-S * L2_f 5 11 12A
LK S-V * 17 11 35 IIA
i
Tel Set R or R1 18 34 1B
| ,,,
R or R1 9 25 1A
B or B1 I 17 33 2B
B or B1 8 24 2A
Strap ] BK PSB10 *
Strap BK PSB20 *
CE BL-BK 10
B+ BK-BL 15
D-180492 SHa 1 R-BL 16
Kit LK BL-R 17
of
Parts SHi G-W 18
PrR BL-V 20
VDD W-G 21
M1 "S'BK 4 7
P1 BL-R 13 8
666B --15V BK-S 14 16
TRMTR. S O-BK 3 18
(T7A Cord) A1 Y-O 29 19
F1 i G-Y 2 17
LK BK-O 11 35
........
760A LSPK SP1 G 34 20
(R2FK Cord) SP2 R 335 295
3B
95B-Type A C1 § _,
Pwr-Unit AC2 4B §
2012B (MD)or AC1 27 27
2012D Trnsf AC2 ! 36 36
.......
• Insulated and stored.
t" Terminal on network.
5 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.
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).
Poge 17