Avaya Definity SI, Maintenance Manual, Page: 155 / 2968

Multimedia Call Handling (MMCH)
Issue 4 May 2002 5-51 555-233-123
Multimedia Call Handling (MMCH)
Expansion Services Module
The Expansion Services Module (ESM) shown in Figure 5-10 provides T.120 data
sharing capability on a MMCH multipoint H.320 video conference. Each
conference participant must have endpoints administered and a personal
computer with the H.320 video application installed. The Avaya DEFINITY Server
must have an expansion service module.
Figure Notes
Figure 5-10. Typical ESM connections
!
CAUTION:
The TN2207 circuit pack is the only pack allowing connection of an ESM to
the Avaya DEFINITY Server.
Troubleshooting MMCH
Before troubleshooting any problems associated with the DEFINITY MMCH,
always be sure that the endpoint is operating correctly (audio, video, and data) by
making point-to-point test calls. If possible, make the test calls over the network to
test the connectivity and routing of network calls from the endpoint. This
eliminates problems such as disconnected audio or video cables and network
troubles.
1. Port B Y-cable connector to a TN787 Multimedia
Interface (MMI) circuit pack
2. Port A Y-cable connector to a TN2207 PRI circuit
pack
3. 25-pair Y-cable
4. 356A adapter
5. D8W cord connected to
356A adapter port 1
6. Expansion Service Module
(ESM)
7. Port B on compatible primary
rate interface (PRI) card
cydf012 RPY 100697
1
2
4
5
3
6
7