MM720 BRI Media Module

Last Updated : Oct 18, 2017 |
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The Avaya MM720 BRI Media Module contains eight ports that can be administered either as BRI trunk connections or BRI endpoint (telephone and data module) connections.
Note:
The MM720 BRI Media Module cannot be administered to support both BRI trunks and BRI endpoints at the same time. MM720 BRI Media Module supports a combination of B-channels using BONDing module Mode 1, to form a 128-kbps channel or a higher bandwidth connection.
Starting with Communication Manager Release 3.1, the MM720 BRI Media Module supports combining both B-channels, using BONDing, to form a higher bandwidth connection.
For BRI trunking, the MM720 BRI Media Module supports up to eight BRI interfaces, or up to 16 trunk ports, to the central office at the ISDN S/T reference point.
For BRI endpoints, each of the 8 ports on the MM720 BRI Media Module can support one integrated voice/data endpoint or up to 2 BRI stations and/or data modules. Supported endpoints must conform to AT&T BRI, World Class BRI, or National ISDN NI1/NI2 BRI standards. The MM720 BRI Media Module provides -40 volt phantom power to the BRI endpoints.
MM720 Media Module provides two 4-wire S/T ISND BRI. The maximum range of the S/T interface is 1800 feet between the NT and the TE.
Information is communicated in two ways:
  • Over two 64-kbps channels, called B1 and B2, that can be circuit-switched simultaneously
  • Over a 16-kbps channel, called the D-channel, that is used for signaling
The circuit-switched connections have an A-law or Mu-law option for voice operation. The circuit-switched connections operate as 64-kbps clear channels when in the data mode.
The MM720 is supported in the G450 and G430 Branch Gateways.