Bell System Practices TOUCH-A-MATIC 2872A1M Identification, Installation, Connections, Operation, And Maintenance page 38

SECTION 503-603-101
i TABLE G e
CONNECTIONS FOR 2/4-WI RE SERVICE
,
, •
LEAD REMOVE CONNECT
APPARATUS
COLOR FROM TO
BK-G Net. GN Net. L1
BK Net. R *
Tel Set
BR-V * PSB-17
V-BR * PSB-34
V Net. T
S Net. L2
BR PSB-3
Y-BR Net. L1
D-180494 BL-R Net. GN
Kit of Parts
G-BK PSB-17
R-BR Net. R
R'O Net. S
BL-Y PSB'34
• Insulated and Stored.
i TABLE H _1
CONVERSION OF KEYS FOR SIGNALING
SELECTIVE SIGNALING
COLOR: BLUE ORANGE GREEN BROWN SLATE
508 PLUG PI N NO: 2 2 2 2 2 1
--.
LEAD COLOR: W R BK Y V S
HPPPPP TB1-3 TB1-2 TB1-2 TB1-2 TB1-2 TB1-4
Key HPPPPS TB1-3 TB1-2 TB1-2 TB1-2 TB1-5 TB1-4
Functions t HPPPSS TB1-3 TB1-2 TB1-2 TB1-5 TB1-5 TB1-4
HPPSSS TB1-3 TB1-2 TB1-5 TB1-5 TB1-5 TB1-4
COMMON SIGNALING (SEE NOTE)
COLOR: BLUE ORANGE GREEN BROWN SLATE
508 PLUG PIN NO: 2 2 2 2 2 1
LEAr.) COLOR: W R BK Y V S
.....
HPPP*P*S TB1-3 TB1-3 TB1-2 TB1-2 TB1-2 TB1-3
Key
Functions + HPP*P*P*S TB1-3 TB1-2 TB1-2 TB1-2 TB1-2 TB1-3
Note': Insulate and store (BK) strap lead from TB1-3.
* These arrangements use line switch controlled ground for common signal key, used with
private or intercommunicating lines. Common signal should be used to operate a common
signal relay, Do not wire directly to a buzzer.
-i-Remove pins to make key nonlocking when used for signaling.
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