The VoIP platform encountered an exception %1 during the call with ID “%2”. This exception occurred at the Microsoft Exchange Speech Engine VoIP platform during an event-based asynchronous operation submitted by the Unified Messaging server. The Unified Messaging server will attempt to recover from this exception. If this warning occurs frequently, contact Microsoft Product Support.

Details
Product: Exchange
Event ID: 1079
Source: MSExchange Unified Messaging
Version: 8.0
Symbolic Name: PlatformException
Message: The VoIP platform encountered an exception %1 during the call with ID “%2”. This exception occurred at the Microsoft Exchange Speech Engine VoIP platform during an event-based asynchronous operation submitted by the Unified Messaging server. The Unified Messaging server will attempt to recover from this exception. If this warning occurs frequently, contact Microsoft Product Support.
   
Explanation

This Warning event indicates that an exception occurred at the Microsoft® Exchange Speech Engine Voice over IP (VoIP) platform during an event-based asynchronous operation submitted by a computer that has the Unified Messaging server role installed. Event-based asynchronous operations allow the Unified Messaging (UM) server to continue to accept new calls and wait for responses for previous calls at the same time. The UM server handles these parallel VoIP operations by using separate threads. These parallel operations allow the UM server to perform many tasks at the same time, yet remain responsive.

   
User Action

If this warning frequently occurs, contact Microsoft Product Support. For information, see the Microsoft Help and Support Web site.

If you are not already doing so, consider running the tools that Microsoft Exchange offers to help administrators analyze and troubleshoot their Exchange environment. These tools can help you make sure that your configuration is in line with Microsoft best practices. They can also help you identify and resolve performance issues, improve mail flow, and better manage disaster recovery scenarios. Go to the Toolbox node of the Exchange Management Console to run these tools now. For more information about these tools, see Toolbox in the Exchange Server 2007 Help.

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