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Traffic engineering
200 Avaya Application Solutions IP Telephony Deployment Guide
the message traffic through C-LANs and IPSIs. Optimal configurations allocate enough of both
to maintain traffic levels at or below known stable thresholds. Avaya configuration software tools
perform the requisite analysis and resulting resource sizing, as needed.
Media processing and TDM resources
The media processing resources on the TN2302AP IP Media Processor and/or TN2602AP IP
Media Resource 320 circuit packs on a PN or a G650 Media Gateway provide the gateway for
an audio channel between an IP endpoint and a circuit-switched TDM bus. On a G350 or G700
Media Gateway, the media processing resources reside on an on-board VoIP module. A G700
Media Gateway can accommodate an optional extra VoIP module as well. The media stream for
a call between a circuit-switched endpoint and an IP endpoint on a PN or MG traverses the PN’s
or MG’s TDM bus, a TN2302AP or TN2602AP media processing circuit pack or a VoIP module
(as applicable), and an IP network. The media stream for a call between two circuit-switched
endpoints on a single port network or Media Gateway uses that PN or Media Gateway’s TDM
bus, and does not require any media processing resources. However, the media stream for a
call between two circuit-switched endpoints that reside on different circuit-switched facilities
(that is, two different PNs, two different Media Gateways, or one PN and one Media Gateway)
traverses each circuit-switched facility’s TDM bus, a media processing resource on each
circuit-switched facility (a Media Processing circuit pack or VoIP Media Module, as applicable),
and an IP network. Figure 65:
Examples of media streams between Avaya endpoints on
page 200 shows some examples of the various possible media streams.
Figure 65: Examples of media streams between Avaya endpoints