The OCS 2007 Client Version filter can be a bit confusing as to how to filter clients. I’ve run into this issue twice now, so I thought I’d share my experience and dive into this a little deeper. TechNet has an explanation of how to configure the Client Version filter, but there are quite a few things they left out.
http://technet.microsoft.com/en-us/library/bb936607.aspx

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There is some debate in the industry about bandwidth requirements for Microsoft’s RTAudio and RTVideo codec used in Office Communication Server 2007. This is a very good description of the actually requirements for planning purposes.

The short answer is that you should plan 57 Kbps for Audio and 320 Kbps for Video. The QoE document lists 45 Kbps for RTA-WB, but that does not include Ethernet or SRTP overhead.

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Overview

The Microsoft Office Communications Server 2007 Resource Kit Tools provide a set of deployment and technical reference information for Microsoft Office Communications Server 2007. The set of tools and documentation in the Resource Kit Tools can be used as a complement to the Microsoft Office Communications Server 2007 documentation or as stand-alone tools.

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This blog is an opportunity to share some of my thoughts, but also a place to store useful information for myself.  Hopefully some of this information is useful to you as well, otherwise you’re wasting your time here. 🙂