Nortel Networks NN43001-121 manual Multiple location network

42Planning and engineering

The Signaling Server, OCS Proxy server (which runs MCM), OCS 2007 Front End server, and Active Directory are separate. The number of Signalling Server(s), OCS 2007 Proxies, and OCS 2007 Front End servers required for each customer are the same as if each customer were part of a single system. However, the total number of users allowed for the CS 1000 is the total number of users for all customers.

Multiple location network

The following diagram shows the path of an inbound and outbound call in a multiple location network configuration in a single forest deployment. The MCM routes inbound calls from the Signaling Server to the appropriate Mediation Server within the Mediation Server pool. When the current Mediation Server does not answer, MCM jumps to the next Mediation Server.

Figure 14

Multiple location network

For regional or multiple location deployments, it is required to install SPS/SRS. Two Primary/Secondary SPS/SRS may co-exist within one configuration to improve the system’s robustness. In the previous versions of the program, the MCM performs polling by sending SIP OPTION request to determine which SPS/SRS is active. The active SPS/SRS becomes the last one to send an OK response. The SIP Proxy Server (SPS) sits between MCM and the TR\87 FE application that reside on CS 1000. This SIP proxy allows communication between the CS 1000 and OCS when different transport protocols (TLS and TCP) are used. An OCS configuration with

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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