Call processing
130 Avaya Application Solutions IP Telephony Deployment Guide
Figure 48: Media Processor board support of a three-party audio conference on page 130
provides an example to show how the Media Processor board is configured for a three-party
H.323 audio conference using G.729. This conference is conventional in that it uses TDM bus
timeslots to allow each party to listen to all of the other parties. However, a more efficient form of
conferencing is possible when all the parties are IP endpoints, where the audio streams are
multiplexed directly on the Media Processor circuit pack, and no TDM timeslots are used. To
establish the configuration shown in Figure 48:
Media Processor board support of a three-party
audio conference on page 130, the DSP resources on the Media Processor board are allocated
as needed to audio conferencing. Communication Manager balances the available media
processing resources, effectively sharing load among multiple Media Processor boards.
Figure 48: Media Processor board support of a three-party audio conference
Separation of Bearer and Signaling (SBS)
In an Avaya IP Telephony system, call signaling and bearer traffic may be routed over separate
paths. This is useful for a remote branch office with only limited WAN bandwidth back to
headquarters. Call signaling traffic can be routed across the WAN, while bearer traffic is sent
over the PSTN.
