Real-Time Protocol (RTP) packets from a media server are not marked after you enable Quality of Service (QoS) at the pool level in Communications Server 2007 R2

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Consider the following scenario.
  • You enable Quality of Service (QoS) at the pool level in Microsoft Office Communications Server 2007 R2.
  • You restart all the services to force the media server to update the settings.
  • Then, you make a call to another user by using the media server.
In this scenario, Real-Time Protocol (RTP) packets from the media server do not contain Differentiated Services Code Point (DSCP) values.
This problem is caused by a bug in Communications Server 2007 R2. This bug causes the Unified Communications Managed API (UCMA) not to read the settings from Communications Server 2007 R2.
To resolve this issue, apply the following update:
For more information, click the following article number to view the article in the Microsoft Knowledge Base:
970679 Description of the update package for Office Communications Server 2007 R2, Unified Communications Managed API 2.0 Core Redist 64-bit: July 2009
More information
For more information about media servers and how to enable QoS in Communications Server 2007 R2, visit the following Microsoft Web site:

Article ID: 972710 - Last Review: 01/16/2015 04:05:26 - Revision: 2.0

Microsoft Office Communications Server 2007 R2 Enterprise Edition, Microsoft Office Communications Server 2007 R2 Standard Edition

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