AT&T 75 Wiring Manual page 308

110-TYPE HARDWARE
1 .
Connect B25A cables between the network interface and the sneak fuse panels.
2 .
Connect A25D cables from the sneak fuse panels to the 110 terminal block
connectors in the green field.
3 . Connect 1-pair patch cords or jumper wires from each green 110 terminal block
row to the purple and yellow 110 terminal block rows as shown by the example in
Figure 3-68 for 1-pair central office trunks or by the example in Figure 3-69 for 3-
pair tie trunks.
Figure 3-68. Example of Establishing 3-Pair Modularity for Trunk Pairs Used
for 1-Pair Trunk Circuits; DID, Loop Start, Ground Start
3-92