Nortel Networks 400 4.0 User Manual

BCM200/400 4.0 Installation and Maintenance Guide

The Nortel Business Communications Manager (BCM) system provides private network and 
telephony management capability to small and medium-sized businesses. The BCM system 
integrates voice and data capabilities, voice over Internet protocol (VoIP) gateway functions, and 
quality of service (QoS) data-routing features into a single telephony system. The BCM system is 
a compact system that enables you to create and provide telephony applications for use in a 
business environment. 

Refer to the following sections for information on the BCM hardware components:

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The primary hardware component in the BCM system is the main unit:

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BCM200 main unit (see 

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BCM400 main unit (see 

Note: Some of the components described in this document are not available in all areas. 
Ask your Nortel sales agent for information about availability.

Warning: External equipment connected to the auxiliary ringer, page relay, page 
output, and music-on-hold interfaces must use safety extra low voltage (SELV).
All four interfaces are SELV, and the external equipment connected to these 
interfaces must be SELV. If these interfaces are not SELV, you must use external 
line isolation units (LIU).