
Upgrades 19
Copyright © 2003, Nortel Networks MCP Interworking Basics
Nortel Networks Confidential
Compatibility is maintained by version identifiers included in an MCP
user’s service package information. When new CDS functionality
becomes available in the MCP network, older Converged PC Clients
can continue to exist and operate in the upgraded MCP network;
however, they won’t be able to access the new Converged PC Client
services.
Note: In general, MCP network is upgraded before the PC Client is
upgraded.
Interworking with third-party voicemail servers
MCP interworking with third-party voicemail servers does not involve
additional software deployment to the third-party voicemail servers.
The MCP SIP Application Module uses SIP to successfully
communicate with third-party voicemail servers. For non-SIP-aware
voicemail servers, a gateway between the MCP network and the legacy
voicemail server is used, in which case the MCP SIP Application
Module still relies on SIP to successfully communicate with that
gateway (for example, the MCP SIP PRI Gateway connects the MCP
network to a PRI trunk-based voicemail server).
The MCP SIP Application Module and the MCP SIP PRI Gateway can
be upgraded independently of any third-party voicemail server (or
necessary intermediary gateway). Refer to MCP SIP PRI Gateway
Basics and MCP SIP Application Module Basics for more information
on upgrades to those nodes of the MCP network.
For information about the upgrade procedures of a specific third-party
vendor’s voicemail server, please refer to the documentation provided
by that third-party vendor.
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