2.5 Connecting Extensions

2.5.1 Connecting Extensions

Connection

Insert the modular plugs of the telephone line cords (2- or 4-conductor wiring) into the modular jacks on the PBX.

Maximum Cabling Distance of Extension Wiring (Twisted Cable)

2- or 4-conductor wiring is required for each extension as listed below. There are 4 pins that can be used for connection: "T" (Tip), "R" (Ring), "H" (High) and "L" (Low).

Telephone Wiring SLT 1-pair wire (T, R) PT (such as KX-T7735) 2-pair wire (T, R, H, L) DSS Console 1-pair wire (H, L)

Note

If a telephone or answering machine with an A-A1 relay is connected to the PBX, set the A-A1 relay switch on the telephone or answering machine to the "OFF" position.

2.5.2 Connecting Extensions in Parallel

Any single line telephone (SLT) can be connected in parallel with a proprietary telephone (PT) as follows:

Note An answering machine, fax machine or modem can be connected in parallel with a PT in the same way as an SLT can.