Nortel Networks NN43001-121 - Manual (Page 97)

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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