Avaya BCM50 Hardware Installation Manual page 26

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BCM50 Hardware & Installation

Basic Rate Interface Module

The Basic Rate Interface media bay module (BRIM) connects a maximum of

four BRI ISDN loops to the BCM system.

The BRIM only recognizes the T-interface used in European networks. To use

the BRIM with the U-interface, typical in North American networks, you require

an external NT1 box to convert the U-interface to a T-interface.

Each BRI ISDN connected loop adds two telephone lines to the BCM system.

Each BRIM can add a maximum of eight lines to the BCM system through the

four RJ-48C jacks on the faceplate.

Global Analog Trunk Module

The global analog trunk media bay module (GATM) provides an interface for

four or eight analog public switched telephone network (PSTN) lines. The

GATM supports both pulse and tone dialing, as well as caller ID and

disconnect supervision in selected markets throughout the world.

The GATM uses an RJ-21 connector as the trunk interface.

NN40011-002 Issue 1.2 BCM50 Rls 6.0

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