Nortel Networks BCM200/400 - Manual (Page 25)

Regulatory information 25
BCM200/400 4.0 Installation and Maintenance Guide
Safety
Additional safety information
The following interfaces (TNV) can be connected to the Public Switched Telephone Network in
accordance with Nortel and the local carriers installation requirements:
• BCM, CSC GATi Ports
• BCM, CSC ADSL Port option
• Expansion Unit, Digital Trunk Module (T1/E1/ISDN)
• Expansion Unit, Global Analog Trunk Module 4 and 8 Port (Loop Start)
• Expansion Unit, CTM4/8 (Loop Start)
• Expansion Unit, 4x16 (Loop Start)
• Expansion Unit, BRIM (ST configuration)
Warning:
Only qualified service personnel may install this equipment. The instructions in this
manual are intended for use by qualified service personnel only.
Warning: Risk of shock.
Ensure the BCM is unplugged from the power socket and that any telephone or network
cables are unplugged before opening the BCM main unit or expansion unit.
Read and follow installation instructions carefully
Warning: Only qualified persons should service the system.
The installation and service of this hardware is to be performed only by service
personnel having appropriate training and experience necessary to be aware of hazards
to which they are exposed in performing a task and of measures to minimize the danger
to themselves or other persons.
Electrical shock hazards from the telecommunication 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 Earth.
Service personnel must be alert to the possibility of high leakage currents becoming
available on metal system surfaces during power line fault events near network lines.
These leakage currents normally safely flow to Protective Earth through the power cord.
Therefore, it is mandatory that connection to an earthed outlet is performed first and
removed last when cabling to the unit. Specifically, operations requiring the unit to be
powered down must have the network connections (exchange lines) removed first.