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Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance page 34

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SECTION
503-603-101
FIG. D
DIAL
TONE DETECTOR
(P/O
D- 180.493)
INPUT
(G- R )
PB
(O-BK)
FIG. C
RELAY
PRINTED
WIRING
BOARD
(D-
80492
)
INPUT (G-R)
FIG.
DT
(O-Y)
PFR (BL-V)
_o7
I
B
VDD ( W-G )
__,_4
!
VDD
(R-O)
DR
(Y-O)
PL
(O-R)
FIG. E
DTT
(BE-Y)
ONE-TOUCH
SPR
(Y-BE)
CALLING
SWITC H
(P/O
D-180493)
lS_ (s)
, ol
FIG"
_S
B
2
(S}
COM
(BK-O)
I
SPO
(G-Y)
Fig. 9--2872AIM
(MD)
or 2872A2M
Telephone
Set, Connections
(Sheet
2 of 5)
Page
34

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