Article ID: 2589545 - Last Review: August 30, 2011 - Revision: 2.0

A hotfix is available to add an "ms-mediation-generated" header to the response of a Mediation server in Lync Server 2010

Hotfix download is availableHotfix Download Available
View and request hotfix downloads
View products that this article applies to.
System TipThis article applies to a different operating system than the one you are using. Article content that may not be relevant to you is disabled.
Expand all | Collapse all

SYMPTOMS

Assume that a user makes a PSTN call by using a Microsoft Lync 2010 client. The Outbound Routing (OBR) component does not receive a response that is between 180 and 183 from the first gateway within 10 seconds. In this situation, the OBR component on the Lync Server 2010 server does not route the PSTN call to other gateways.
Back to the top

CAUSE

This issue occurs because a Mediation server sends back a response that is between 180 and 183 for non-bypass calls when the Mediation server retrieves the INVITE message from the OBR component. The response stops the 10 second OBR call timer that is used to detect unresponsive gateways.
Back to the top

RESOLUTION

To resolve this issue, install the following cumulative update:
2592293  (http://support.microsoft.com/kb/2592293/ ) Description of the cumulative update for Lync Server 2010, Mediation Server: August 2011


Note After you apply this update, an ms-mediation-generated header is added to the response. The OBR component does not stop the 10 second call timer when the header is detected.
Back to the top

MORE INFORMATION

For more information about Lync Server 2010 Outbound Routing, visit the following Microsoft website:
General information about Lync Server 2010 Outbound Routing (http://technet.microsoft.com/en-us/library/dd425347(office.13).aspx)

For more information about the Mediation server bypass, visit the following Microsoft website:
General information about the Mediation server bypass (http://technet.microsoft.com/en-us/library/gg398311.aspx)

Back to the top
APPLIES TO
  • Microsoft Lync Server 2010 Standard Edition
  • Microsoft Lync Server 2010 Enterprise Edition
Back to the top
Keywords: 
kbautohotfix kbqfe kbHotfixServer kbfix KB2589545
Back to the top