AT&T Release 2.0 manual Installing Telephones and Adjuncts

Installing Telephones and Adjuncts

CAUTION:

■Take extreme care to make sure that only MLX phones are connected to MLX modules; otherwise, the mismatch couid damage the ports and cause them to stop functioning.

■Incorrect wiring can result in users not being able to place outgoing calls. Make sure you use the proper cord. For all GS/LS modules, do the following:

—Use a D2R cable from an RJ11.

—Do not use the Brand-Rx Quad cable from an E66 block.

If you cannot avoid using the Brand-Rex Quad cable, reverse the tip and ring leads at the E66 block to correct the mismatch.

■To avoid coupling power supply noise onto system wiring, allow at least 3 inches (7 cm) of clearance between the basic carrier’s power supply and any wiring or termination hardware located left of the control unit.

If staples are used to attach the cords to walls or baseboards, check that the cords have not been pierced.

WARNING:

National and local building codes specify the type of cable required for telecommunication wiring. For example, indoor wiring (DIW cable) cannot be used inside or on top of air plenums or ducts, along hot pipes, or across walkways. Consult your local ordinances and regulations for proper cable selection.

If you need to connect the telephones differently from the instructions on the system forms, record each jack and telephone change on Form 2a, System Numbering—Station Jacks. See Appendix A.

3-44Connecting the Telephones to the Control Unit