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Currently, on a computer that is running Microsoft Office Communications Server 2007 and that has the Audio Video Conferencing Server role installed, the Audio Video Conferencing Server negotiates with client computers to use a packet interval of 60ms to send their audio Realtime Transport Protocol (RTP) packets. This may result in some latency and performance issues over low bandwidth connections.
This hotfix changes this interval to 20ms. This shorter interval may result in improved latency and better performance in calls over low bandwidth connections.
How to obtain the hotfix
This issue is fixed in the Microsoft Office Communications Server 2007 hotfix package released in October, 2008. For more information, click the following article number to view the article in the Microsoft Knowledge Base:
956831 Description of the update package for Office Communications Server 2007 Audio Video Conferencing Server: October, 2008
Microsoft has confirmed that this is a problem in the Microsoft products that are listed in the "Applies to" section.