Article ID: 975050 - View products that this article applies to.
Consider the following scenario:
Note A PSTN caller has anonymous caller-id when the caller-id is blocked. A call transfer only works if the caller selects someone from the Activity Directory. Only a call transfer by using key mapping is broken. However, if OCS 2007 is not involved, there is no problem by using key mapping to transfer a call. In other words, a caller with caller-id blocked can perform a call transfer by using key mapping when a call comes to an Exchange Server 2007 UM server directly from a Private Branch Exchange (PBX) device. Additionally, when this problem occurs, the Exchange Server 2007 UM server sets the caller's address as the following: sip: anonymous@<domain name>
The issue that is described in the "Symptoms" section occurs because Exchange Server 2007 UM server does not provide a valid host name for an anonymous call.
To resolve this problem, install the following update rollup:
(https://support.microsoft.com/kb/972076/ )Description of Update Rollup 2 for Exchange Server 2007 Service Pack 2
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
For more information about DTMF Auto Attendant, visit the following Microsoft Web site:
For more information about Unified Messaging Auto Attendant call processing, visit the following Microsoft Web site:
Article ID: 975050 - Last Review: January 22, 2010 - Revision: 1.0