Chapter 2 Telephony hardware 37

Trunk media bay modules

You install the trunk media bay modules in the BCM1000 or the BCM1000e. Trunk media bay modules connect telecommunications lines to the Business Communications Manager hardware.

These are determined by:

which lines are available from your telephone service provider

what lines you require for the types of telephones you want to use

budget considerations

Table 3 lists the types of trunk media bay modules that are available for the Business Communications Manager system:

Table 3 Trunk media bay modules

Module type

What it does

Special notes

 

 

 

DTM

Connects digital public switched

Can connect to four types of lines: TI,

“Digital Trunk media bay module”

telephone lines to the Business

NA PRI, ETSI (in UK only), and Euro

Communications Manager system.

PRI.

 

CTM

Connects a maximum of four analog

Only available for North American

“Caller ID Trunk media bay

public switched telephone lines to the

systems.

module”

Business Communications Manager

See also “4X16 media bay module” on

 

system.

 

page 44.

 

 

CTM8

Connects a maximum of eight analog

 

“Caller ID Trunk media bay

public switched telephone lines to the

 

Business Communications Manager

 

module”

 

system.

 

 

 

 

 

 

BRI

Connects a maximum of four ISDN

Note: The DECT module contains the

“Basic Rate Interface media bay

BRI interfaces

equivalent of a BRI module and does

 

not require a separate module for trunk

module”

 

 

line functions.

 

 

GATM (Global Analog Trunk

Connects either four (GATM4) or eight

Only North America, Taiwan, UK and

Module

(GATM8) analog public switched

Australia are supported. Modules

(introduced with BCM 3.5

telephone lines to the Business

installed in BCM 3.5 and newer systems

software, but is backward

Communications Manager system.

can be set to automatically download

compatible)

 

firmware from the Business

 

 

Communications Manager. This allows

 

 

for firmware updates, as required.

 

 

 

Installation and Maintenance Guide

Page 63
Image 63
Nortel Networks BCM1000 manual Trunk media bay modules, Module type What it does Special notes