An Office Communicator 2007 R2 user cannot invite a Lync 2010 user to an Audio/Video conference

Symptoms

Consider the following scenario:

  • A Microsoft Office Communicator 2007 R2 user invites a Microsoft Lync 2010 user to an Audio/Video conference by using the telephone number of the Lync 2010 user.

  • The Lync 2010 user joins the conference successfully, and then they both end the Audio/Video session without ending the instant message session.

  • The Office Communicator 2007 R2 user tries to invite the same Lync 2010 user to an Audio/Video conference also by using the telephone number of the Lync 2010 user.

In this scenario, the Lync 2010 user cannot be added to the new Audio/Video conference.

Note This issue may also occur between only Office Communications Server 2007 R2 users.

Cause

This issue occurs because the Audio Video Multipoint Conferencing Unit (AVMCU) only removes the asserted identity and leaves the TEL URI in the participant list when users who are invited by using telephone numbers are removed from the conference. Therefore, other requests of adding the same TEL URI fails.

Resolution

To fix this problem, install the following cumulative update:

2403679 Description of the cumulative update package for Office Communications Server 2007 R2, Audio/Video Conferencing Server: November 2010

Status

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

Need more help?

Expand your skills
Explore Training
Get new features first
Join Microsoft Insiders

Was this information helpful?

Thank you for your feedback!

Thank you for your feedback! It sounds like it might be helpful to connect you to one of our Office support agents.

×