Avaya BCM1000 Installation Manual download pdf (Page 85)

Installation and Maintenance Guide

Chapter 4

Selecting the media bay modules for your system

The media bay modules are the devices in the Business Communications Manager system that

permit you to connect your extensions and the public switched telephone network (PSTN) lines to

the call processing capabilities of the Business Communications Manager system.

A special media bay module called a Fiber expansion module (FEM) allows you to update from a

Norstar system to a BCM1000 by reusing the Norstar expansion modules and the fiber cables to

the modules.

When you order your Business Communications Manager system, there are no media bay modules

installed in the BCM1000 or the BCM1000e. This configuration allows you to select the number

and type of media bay modules that best meet your requirements.

If you have a large Business Communications Manager system, there are some configuration

restrictions that can apply to your system. For information about these restrictions, refer to “Rules

for assigning DS30 bus blocks and offsets” on page 85.

Figure 24 Process for determining modules

The first step in selecting the media bay modules is to determine the number of extensions

(internal lines) and PSTN lines (trunk lines) you have or need. This determines how many media

bay modules you require, and what type of modules you require. These following sections describe

how to determine which modules, and how many, you require for your system.

After you determine which modules you want to use, you must ensure they fit into the available

system resources. These sections describe how the modules work within the available DS30 bus

blocks of the Business Communications Manager.

Determine DS30 bus

requirements for

each module

Determine if any

offsets can be used

Set DIP switches on modules

Install modules into the

BCM1000 or BCM1000e

Determine trunk

and extension

requirements

Determine which

DS30 bus blocks

are available

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Avaya BCM1000 Installation Manual Page 85