Nortel Networks BCM1000 manual Chapter Wiring the modules

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Chapter 10

Wiring the modules

This chapter describes how to wire the cables that connect to the station and trunk modules.

•Station modules require 25-pair wired cables to connect the modules to the equipment in the telephone room where your telco demarcation point is located. Use a qualified technical professional to ensure the cable wiring and your interior telephone wiring are correct.

•Trunk modules, DECT base stations, and FEM cables are connected using RJ-type jacks. These cables can be supplied by qualified technical personnel to ensure the correct pin-out.

Warning: Use only qualified persons to service the system.

The installation and service of this unit must be performed by service personnel with the appropriate training and experience. Service personnel must be aware of the hazards of working with telephony equipment and wiring. They must have experience in techniques that minimize any danger of shock or equipment damage.

Warning: Leakage currents

Service personnel must be alert to the possibility of high leakage currents becoming available on metal system surfaces during power line fault events on network lines. These leakage currents normally safely flow to Protective Earth ground via the power cord. However, if the ac power is unplugged prior to disconnecting the cables from the front of the base unit, this hazard can occur.

System shutdown: You must disconnect the media bay module cables, network connections, and MSC auxiliary equipment connections from the system before disconnecting the power cord from an earthed outlet.

System startup: You must reconnect the power cords to an earthed outlet before reconnecting the cables to the media bay modules, network cards, or MSC card.

Danger: Electrical shock hazards

Electrical shock hazards from the telecommunications network and ac mains are possible with this equipment. To minimize risk to service personnel and users, the BCM1000 and the BCM1000e, if there is one, must be connected to an outlet with a third wire ground.

In addition, all unused slots must have blank faceplates installed. The covers on all units must be in place at the completion of any servicing.

Figure 52 provides an overview of the process for connecting trunk and station wiring to the Business Communications Manager media bay modules.

Installation and Maintenance Guide