AT&T 3.0 manual See Labeling Trunks, later in this chapter, for instructions

Wiring

8Test the central office trunks for proper connection. See “Testing Trunks,” later in this chapter, for instructions.

9Label the network interface jacks, control unit module jacks, termination blocks, and D2R cords.

See “Labeling Trunks,” later in this chapter, for instructions.

10For each trunk, plug one end of a D2R cord into the designated jack on the termination block and the other end into the line/trunk jack on the proper control unit module.

NOTE:

The modular jacks on the termination block are 8-wire jacks. The D2R cords, which are 6-wire, also plug into the 8-wire jacks.

CAUTION:

Do not plug an analog multiline telephone, an MLX telephone, or anything else that should be plugged into an extension jack into this wiring field.” doing so will busy-out the trunk.

Connecting the Control Unit to the Network Interface 4-9