Avaya G700 Overview Manual page 23

Avaya™ MM712 DCP Media Module
ALM ALM
TST TST
ACT ACT
For more information, see Hardware Guide for Avaya Communication Manager.
Avaya™ MM720 BRI Media Module
The MM720 contains eight ports that interface to the central office at the ISDN T reference point.
Information is communicated in two ways:
• Over two 64 Kb channels called B1 and B2
- Can be circuit switched simultaneously
• Over a 16 Kb channel called the D channel
- Used for signaling
- Occupies one time slot for all eight D channels
The circuit switched connections have a u-law or A-law option for voice operation. The circuit
switched connections operate as 64 Kb clear channels when in the data mode.
The MM720 does not support the following:
• BRI stations
• Combining both B channels together to form a 128 Kb channel
See the following figure for an example of the MM720.
Avaya™ MM720 BRI Media Module
ALM ALM
TST TST
ACT ACT
For more information on the MM720 see Hardware Guide for Avaya Communication Manager.
Avaya™ MM760 VoIP Media Module
The MM760 is a clone of the motherboard VoIP engine. The MM760 provides an additional 64 VoIP
channels with G.711 compression.
The capacity is 64 G.711 TDM/IP simultaneous calls, or 32 compression codec, G.729 or G.723,
TDM/IP simultaneous calls. These call types can be mixed on the same resource; in other words, the
simultaneous call capacity of the resource is 64 G.711 equivalent calls.
See the following figure for an example of a MM760.
Overview of G700 Media Gateway and S8300 Media Server
555-234-200 — Issue 3 — May 2003
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Avaya Media Modules
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