AT&T 75 Wiring Manual page 270

110-TYPE HARDWARE
CO Trunk Labels (Green)
The labels shown in Figure 3-35 identify network interface leads for trunk circuits. On the
top label, cable pairs are numbered consecutively by fives from 1 to 300 on the labels. The
bottom label is a blank label which must be filled in manually as required.
The label code number for the CO trunk labels is 221A which contains the following:
6 green trunk labels (see Figure 3-35). The labels are numbered from 1 to 300. Each
label identifies 50 trunk pairs.
4 unnumbered green labels (see Figure 3-35). Each label identifies 50 trunk pairs.
3 - 5 4
Label Code 221A—Green Labels (103 970 018)
Figure 3-35. CO Trunk Labels