SX20 and polycom

[jack samuel]

Dears,

I have video issues with polycom devices, on 3 location the setup is as follows,sx20 paired with isdn link which is having ISDN BRI connection to ITSP

SX20 to location A polycom device the video on sx20 is seen perfect but on polycom it is seen just for a moment (2  sec) and then the video disappears only audio continues.

SX20 to location B polycom we didn't see the video at all, it pops-up with message no incoming video it continues with audio.

SX20 to location C polycom high end device audio and video is perfect but the call rate changes to 128KB though I am calling at 512 Kbps.

Thanks

[Wayne DeNardi]

Check the versions of software running on your SX20 and the Polycom devices is a recent version - there are a number of interoperability issues that are fixed between Cisco and Polycom in the newer releases of both.

I know from experience that pre-TC6.2.1 had issues on the Cisco side, and Polycom VSX pre Version 9.0.6 were also a problem.

Wayne
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[jack samuel]

Dears,

Just to inform you all that the case was solved by cisco by disabling H264 and enabling to H263 and it worked.

Thanks

[Wayne DeNardi]

Yes, disabling H.264 using the Capset Filters can be a workaround to get things working, but it's not a good long term solution.  You should, as I discussed earlier, upgrade your devices so they are running current versions of software which should not require any temporary fixes.

Wayne
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