Mm720 Media Module Specifications; Mm721 Media Module Specifications - Avaya G450 Overview And Specification

Optional components
The MM710B media module provides the following features:
• ISDN PRI capability (23B+D or 30B+D)
• Trunk signaling to support US and International CO, or tie trunks
• Echo cancellation in either direction

MM720 media module specifications

The MM720 BRI media module provides eight ports with RJ-45 jacks that you can administer
either as BRI trunk connections or BRI endpoint (phone and data module) connections.
You cannot administer the MM720 BRI media module to support both BRI trunks and BRI
endpoints at the same time. However, the MM720 BRI media module supports combining both B-
channels together to form a 128-kbps channel. Avaya Aura
combining B-channels using BONDing to form a higher bandwidth connection. If you administer
the MM720 BRI media module to support BRI endpoints, it will not function as a clock
synchronization source.
For BRI trunking, the MM720 BRI media module supports up to eight BRI interfaces to the central
office at the ISDN TE reference point. The data is transmitted in the following ways:
• Over two 64-kbps channels, called B1 and B2, which can be circuit-switched simultaneously.
• Over a 16-kbps channel, called the D-channel, which is used for signaling. The MM720
media module occupies one time slot for all eight D channels.
The circuit-switched connections have an A- or Mu-law option for voice operation. The circuit-
switched connections operate as 64-kbps clear channels in Data mode.
For BRI endpoints, the MM720 BRI media module supports up to 16 BRI stations and data
modules that conform to AT&T BRI, World Class BRI, and National ISDN NI1/NI2 BRI standards.
The MM720 BRI media module provides 40-volt phantom power to BRI endpoints.

MM721 media module specifications

The MM721 Basic Rate Interface (BRI) media module has eight ports. You can administer these
ports either as BRI trunk or BRI endpoint connections, such as a phone and data module.
You cannot administer the MM721 BRI media module to support both BRI trunks and BRI
endpoints at the same time. You can use all eight ports on the MM721 media module only for
stations or trunks. You cannot use a mixture of ports for both applications.
April 2020 Avaya G450 Branch Gateway Overview and Specification
Comments on this document? infodev@avaya.com
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