DTMF inputs are not accepted by a UM auto attendant while the greeting message is playing in an Exchange Server 2007 environment

Symptoms

Consider the following scenario:

You create a Unified Messaging (UM) auto attendant in a Microsoft Exchange Server 2007 UM environment.
You configure the UM auto attendant to accept only dual tone multi-frequency (DTMF) inputs. When you do this, the UM auto attendant does not accept voice inputs.
You make a call that is answered by the UM auto attendant, and the greeting message is played back.
You type the extension number of a user while the greeting message is playing.

In this scenario, your call does not get transferred as expected.

To resolve this issue, install the following update rollup:

2530488 Description of Update Rollup 3 for Exchange Server 2007 Service Pack 3

Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.

For more information about Unified Messaging Auto Attendants, visit the following Microsoft website:

Understanding Unified Messaging Auto Attendants

For more information about how to manage Unified Messaging Auto Attendants, visit the following Microsoft website:

Managing Unified Messaging Auto Attendants

Keywords: KB2477139, kbhotfixrollup, kbexpertiseinter, kbsurveynew, kbfix, kbqfe

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