AT&T System 75 Wiring Diagram page 145

CHAPTER 3. EQUIPMENT ROOM DESIGN
Table 3-H. Auxiliary Lead Appearances at 66-Type Cross-Connect
Field
System
66-Type
75 Auxiliary
Conn
Connector
Block
Outputs
Term
01
02
03
04
05
06
07
08
09
10
11
12
13
14
15
16
17
Not Connected
18
19
20
GND
21
-48
22
GND
23
-48
24
GND
25
-48
26
GND
27
-48
28
GND
29
-48
30
GND
31
-48
32
GND
33
-48
34
3-62
75 XE Auxiliary
1M
1m
2M
2m
3M
3m
3W
Not Connected
GND
-48
GND
-48
GND
-48
Emergency
GND
Transfer
-48
Relay
Power
GND
-48
GND
-48
GND
-48
System
Emerg
Xfr Unit
Connector
Outputs
Outputs
1M
1m
2M
2m
3M
3m
3W
Emergency
Transfer
Relay
Power
574-5
Z1A
Power
Xfr Unit
Outputs
TC
TC
TK
TK
LC
LC
LC
LC
TC
TC
TK
TK
LC
LC
ST
ST
TC
TC
TK
TK
LC
LC
ST
ST
TC
TC
TK
TK
LC LC
ST
ST
TC
TC