An IP Gateway can still be used to dial out for a "Play on Phone" request after the IP Gateway is disabled

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Article ID: 957683 - View products that this article applies to.
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SYMPTOMS

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>".

CAUSE

Exchange Server 2007 does not check whether the gateway is disabled before the Exchange server adds the gateway to the list of gateways.

RESOLUTION

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 1
For 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

MORE INFORMATION

For more information about the Disable-UMIPGateway command, visit the following Microsoft Web site:
http://technet.microsoft.com/en-us/library/bb124346.aspx

STATUS

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

Properties

Article ID: 957683 - Last Review: March 18, 2009 - Revision: 1.1
APPLIES TO
  • Microsoft Exchange Server 2007 Service Pack 1, when used with:
    • Microsoft Exchange Server 2007 Standard Edition
    • Microsoft Exchange Server 2007 Enterprise Edition
Keywords: 
kbfix kbexpertiseinter kbqfe kbsurveynew kbhotfixrollup KB957683

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