AT&T System 75 Wiring Diagram page 118

Equipment Room Hardware And Cabling Installation
1
5
26
30
GREEN
1 5
26 3 0
USAGE:
IDENTIFIES NETWORK INTERFACE TRUNK PAIRS.
CODE NO:
221A
USAGE:
CUSTOMER IDENTIFICATION OF NETWORK
INTERFACE TRUNK PAIRS.
CODE NO:
221A
Figure 3-20. CO Trunk Labels for 110-Type Terminal Blocks
Auxiliary Labels (Yellow)
AUXILIARY PORT AND CIRCUIT LABELS
The labels shown in Figure 3-21 identify auxiliary port and circuit
appearances at the cross-connect field. The labels must be filled in
manually.
10 15
40
35
2 0 2 5
4 5
5 0
GREEN
3-35