Nortel Networks BCM200, 400 4.0 manual Read and follow the installation instructions carefully

Chapter 9 Connecting the cables 141

Warning: 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 through the power cord. However, if the ac power is unplugged prior to disconnecting the cables from the front of the base function tray, this hazard can occur.

System shutdown: You must disconnect the MBM cables from the system before disconnecting the power cord from a grounded outlet.

System startup: You must reconnect the power cords to a grounded outlet before reconnecting the cables to the MBMs.

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 BCM system 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.

Warning: Electrical shock warning

The BCM MBMs have been safety approved for installation into BCM main units and expansion units. It is the responsibility of the installer and user to ensure that installation of the BCM hardware does not compromise existing safety approvals.

BEFORE YOU OPEN the BCM main unit or expansion unit, ensure that the network cables are unplugged and the unit is then disconnected from the AC power source.

Station MBMs: The ports on these MBMs are meant to be connected only to approved digital telephones and peripherals with the proper cables on a protected internal wiring system.

Do not connect any telephones to wiring that runs outside of the building.

Read and follow the installation instructions carefully.

BCM200/400 4.0 Installation and Maintenance Guide