Update: Polycom has hinted this will be resolved in the the 6.0 firmware for these devices!
Update 2: This still occours on a seperate customer of mines system on UCS 6.0, I have asked them to raise a ticket with Polycom and egarly await the outcome.
So another interesting one for the ranks. I had a customer who has deployed multiple Polycom Trio units along with a Polycom Group 500 series (Guide on those over here) and the deployment was working well. A few weeks later the customer calls me back to advise that the unit was experiencing terrible video quality.
Surely enough, I dialled into both the Trio and the Group series and both had perfect quality. After a whole bunch of test calls, everything still looked fine.
That is of course until we scheduled a meeting or added a third party. Then it clicked. Peer to peer calls had Media Bypass enabled with very high CAC limits set, yet when using the Conference bridge on the front end, the MCU by default limits non SVC video to 640×480 at 600kbps very crap quality indeed.
As the Group series didn’t have an Advanced HD licence installed, it would only use the RTV Codec and was getting capped at 600kbps
To resolve the issue, ether install the 1080p licence on the Group500 (enabling the SVC codec)
Or increase the bandwidth for RTV by running the command
Set-CsMediaConfiguration –Identity Global -MaxVideoRateAllowed Hd720p15M
Hope this helps someone else.
If your after more info on codecs in Skype4B / Lync and Polycom gear, head over to Jeff Schertz blog. I’m so jealous.. getting to play with all the cool stuff at Polycom.