Nortel Networks NN43001-121 Example 1 Outgoing calls from Office Communicator, MCM architecture

136Configuration

Figure 43

MCM architecture

The following examples illustrate how MCM handles call information. Understanding the role of MCM in the Telephony Gateway and Services component helps you to determine the configuration.

Example 1: Outgoing calls from Office Communicator

In this example, an invite travels from the client to the OCS Front End server, and then to the Office Communications Server MCM Proxy through the Mediation Server. MCM checks which NRS is active, and then sends an invite to that SIP Redirect Service (SRS). In this case, the invite is qualified. To return from the SRS, 302 is used. The invite is then sent unqualified to the CS 1000 associated with the originator’s location code and DN.

Example 2: Incoming calls to Office Communicator

In this example, the user has a desktop telephone and a Personal Call Assistant (PCA) that points to an Office Communications Server 2007 server. The PCA sends a DN or Routing DN. The call was originally made to 6 231 3052, but the PCA hot key is configured with 6 344 5000. This is a "dummy" routing DN; it can be configured with all hot keys in the network.

In a CDP network, the dummy routing DN (for example, 6 231 3052) must also be configured by a DSC (for example, 8200). The DSC is configured on the NRS as a routing entry for the MCM Gateway endpoint.

Nortel Communication Server 1000

Nortel Converged Office Fundamentals — Microsoft Office Communications Server 2007

NN43001-121 01.03 Standard

Release 5.0 30 April 2008

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