I have access to a full video conferencing suite with a Tandberg Edge system installed. This uses IP connections through the Internet for conferencing calls - so the only question left is how to connect desktop users with Mac's directly into a conference calls.

It turns out that good standardised video conferencing solutions for the Mac are very thin on the ground. The only reference to anything that has worked is the following:

Just did a few testcalls with a xmeeting client 0.3.4a on Mac to Lifesize Room, PLCM HDX and Tandberg Edge.
Dont know the exact releases on that systems, but Lifesize and Tandberg did well, only HDX produced a blue screen - so codec negotiation didnt work.

Anybody spotted the same?

[From xmeeting to Room, HDX, Edge - WR Forums]

So I guess next step is to do a test..