Avaya 555-245-600 manual Connectivity modes between two IP endpoints

Traffic engineering

Figure 66: Connectivity modes between two IP endpoints

Figure notes:
1.	Avaya server	5.	TN799DP Control LAN (C-LAN)
2.	TN2302AP IP Media Processor or		circuit pack
	TN2602AP IP Media Resource 320	6.	Customer LAN
	(Media Processor board)	7.	Shuffled audio connection

3.Deep hairpinned audio connection

4.Shallow hairpinned audio connection

At this point, we can quantify the TDM and media processing requirements for various call types. Throughout this discussion, calls between two IP stations are assumed to use shuffling. That being the case, an intrasite call between two IP endpoints requires neither TDM nor media processing resources, beyond the completion of the initial call set-up process. Each intrasite call between an IP endpoint and a circuit-switched endpoint (including PSTN trunks) requires one TDM resource and one media processing resource. Each of these resources is furnished by the PN or the Media Gateway to which the circuit-switched endpoint is administered. See Figure 65: Examples of media streams between Avaya endpoints on page 200 for an example.

The TDM and media processing resources that are required for each intrasite call between two circuit-switched endpoints depends upon whether the call is intraport network or interport network. Specifically, each intraport network call requires one TDM resource (on the port network to which the two circuit-switched endpoints are administered), and no media processing resources. See Figure 65 for an example. Also, assuming that IP interport network

202 Avaya Application Solutions IP Telephony Deployment Guide