Microsoft KB Archive/915571

= You cannot use Communicator 2005 to participate in a video conversation with Communicator 2007 =

Article ID: 915571

Article Last Modified on 12/13/2006

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APPLIES TO


 * Microsoft Office Communicator 2005

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Beta Information
This article discusses a Beta release of a Microsoft product. The information in this article is provided as-is and is subject to change without notice.

No formal product support is available from Microsoft for this Beta product. For information about how to obtain support for a Beta release, see the documentation that is included with the Beta product files, or check the Web location where you downloaded the release.



SYMPTOMS
When you try to use Microsoft Office Communicator 2005 to participate in a video conversation with someone who uses Microsoft Office Communicator 2007, you are unsuccessful.



CAUSE
This problem occurs because the real-time video codec that Communicator 2005 uses is incompatible with the real-time video codec that Communicator 2007 uses.

Communicator 2005 uses the Msrtv video codec. This codec is a proprietary codec. Communicator 2007 uses the standard Rtvc1 video codec.



How to obtain the hotfix
This issue is fixed in the Communicator 2005 Hotfix Package that is dated July 18, 2006. For more information, click the following article number to view the article in the Microsoft Knowledge Base:

921348 Description of the Communicator 2005 hotfix package: July 18, 2006

This hotfix package adds support for the Rtvc1 codec to Communicator 2005. Therefore, after you apply this hotfix, you can use Communicator 2005 to participate in a video conversation with someone who uses Communicator 2007.



STATUS
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the &quot;Applies to&quot; section.

Additional query words: RTC video communication

Keywords: kbqfe kbbug kbfix kbpubtypekc KB915571

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