HDXxxxx and new firmaware and 3.0.4-20259 witch MCU H.264-CIF

Occasional Visitor

HDXxxxx and new firmaware and 3.0.4-20259 witch MCU H.264-CIF

Hi all,

we have a problem with the systems HDX7000/8000/900x ver.  and  3.0.4-20259.

Scopia400 RADVISION MCU ver.
Service-Video MCU - Portocol H.261-H.263-H.264 384Kbps - and resolution up to CIF.


When a system HDX with ver.  or  3.0.4-20259 333 comes into meetings, endpoint does not send the video.
while if the same system hdx comes with ver. or or video works.(NO FW)


Another test, same Service on MCU removing the protocol H264. The video works fine.

Or if in the same Service select bandwith 768Kbp and resolution up to 720P with H.264 the video works fine.


The problem seems to be linked to the component h264 and CIF. With older versions was fully functional.


I found some other posts about having a basic mode turned on, but in recent firmware the basica mode is missing. What we did find, was that diagnostic mode was turned on, and this disabled h.264.
Once we disabled this we had everything working properly. But only H261 and not H264. In this case for all call to be made H.264 are disable.


I need to make call H.264 and CIF for Standard Definition. Of course everything is OK if I make a P2P calls "forced" this protocol and resolution.

Can you help me?


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Polycom Employee & Community Manager

Re: HDXxxxx and new firmaware and 3.0.4-20259 witch MCU H.264-CIF

Hello Nepal99,


welcome to the Polycom Community.


Thank you for bringing this to our attention but the correct procedure should be that you contact your Polycom Reseller and/or Polycom Support directly as troubleshooting an issue of this kind is not within the scope of the community.


Feel free to update this post with a resolution or some feedback once you worked through the correct escalation channels.


Best Regards


Steffen Baier


Polycom Global Services


If official support is required please check how to phone or open a case here

The title Poly Employee & Community Manager is a community setting and does not reflect my role. I am just a simple volunteer in the community like everybody else. All posts and words are my own & do not represent the views of Employer.


Notice: This community forum is not an official Poly support resource, thus responses from Poly employees, partners, and customers alike are best-effort in attempts to share learned knowledge. If you need immediate and/or official assistance please open a service ticket through your proper support channels.
Please also ensure you always check the VoIP , Video Endpoint , Skype for Business , PSTN or RPM FAQ's
Message 2 of 2