240Appendix A Call Flow and protocol details

Figure 94

Inbound call to OC client with SPS, OC client answers

Incoming calls to OC 2007 can originate directly from a phone behind the Communication Server 1000 where the request URI represents the destination.

Incoming calls can also come from a PCA , where the Request URI is a service DN used to route the call to OCS 2007, and the actual destination is determined by a special header (x-nt-ocn) that contains the destination DN. MCM checks for the x-nt-ocn and routes the call accordingly.

Personal Call Assistant (PCA) configuration provides additional Office Communicator features such as forwarding to voice mail, and so on. Configuration of PCA is performed through station administration tools.

This scenario as illustrated in Figure 95 "Inbound call to OC client with SRS, phone answers" (page 241) depicts the presence of an SRS component on the network (instead of SPS).

For example, A Communication Server 1000 user dials 5555 which is the phone belonging to user Bob in the demo.com domain. Bob accepts the call from his phone (instead of the OC client).

Nortel Communication Server 1000

Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007

NN43001-121 01.03 Standard

Release 5.0 30 April 2008

Copyright © 2005–2008, Nortel Networks

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Nortel Networks NN43001-121 manual Inbound call to OC client with SPS, OC client answers