Nortel Networks NN43001-121 manual Signaling with integrated Voice Mail

Unified Messaging 97

ATTENTION

For Converged Office users not using a Nortel telephone

For Converged Office users who use voice communications through the OC client, an 8540 telephone, or both and are configured with a , the following cautions apply:

•Ensure that the Call Forward No Answer and Call Forward Busy settings for the PCA are properly set to the Exchange Unified Messaging System Access number.

•Ensure users do not use the Office Communicator 2007 settings for forwarding or redirecting calls to Voice Mail. For example, using Call Forward or redirect to the Exchange Unified Messaging System Access number, results in calls being answered by the Exchange Unified Messaging logon prompt, "What is the prompt?", instead of receiving the user’s mailbox greeting.

•Callers can experience different call-answering behavior depending upon the state of the user’s PCA . If the PCA is in a ringing state such as a call waiting to be answered by the user, a second caller will be forwarded immediately to the user’s Voice Mail. If the user has already answered a call, a second caller will be forwarded to the user’s Voice Mail only after the number of rings specified by the PCA’s Call Forward No Answer setting.

For more information on configuring Voice Mail access for OCS 2007 users using UM 2007, see "OCS 2007 users using UM 2007" (page 198).

Signaling with integrated Voice Mail

In an integrated configuration, the Office Communicator (OC) client has the capability of selecting a Voice Mail option and the dialing plan is TLS secure. The following diagram depicts the signaling between OCS 2007, Exchange, and the CS 1000 components in an integrated configuration.

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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