Article ID: 957683 - View products that this article applies to.
In an Exchange Server 2007 environment that has Unified Messaging (UM) enabled, a UM IP gateway can still be used to dial out for a "Play on Phone" request after the UM IP gateway is disabled. Additionally, the following event is logged in the Application log:
Event Type: Information
Event Source: MSExchange Unified Messaging
Event Category: UMCore
Event ID: 1075
Description: The Unified Messaging server received a Play on Phone request from "<user name>". The calling number "<extension>" is dialing "sip:<extension>@<IP address>;user=phone" using the IP/VoIP gateway "<IP address>".
Exchange Server 2007 does not check whether the gateway is disabled before the Exchange server adds the gateway to the list of gateways.
To resolve this problem, install Update Rollup 7 for Exchange 2007 Service Pack 1. For more information about Update Rollup 7 for Exchange Server 2007 Service Pack 1, see the following Exchange Help topic:
Description of Update Rollup 7 for Exchange Server 2007 Service Pack 1For more information about how to obtain the latest Exchange service pack or update rollup, see the following Exchange Help topic:
How to Obtain the Latest Service Pack or Update Rollup for Exchange 2007
For more information about the Disable-UMIPGateway command, visit the following Microsoft Web site:
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.
Article ID: 957683 - Last Review: March 18, 2009 - Revision: 1.1