I have a vcs control version 7.0.2 cluster. polycom and c60 codec are registed to this vcs cluster. All are H323 endpoints. CUCM 8.0.3 is integration to vcs control via sip. 9971 ip phone is registered in CUCM. The problem is when i make a call from 9971 to c60 codec i get only audio. No video. But when i call from c60 to 9971 both way audio and video is established. call from 9971 to polycom endpoints and vice versa are working fine.
Any idea why call from 9971 to c60 is only establishing as audio call.
I dont see this as a bandwidth issue. Please let me know if you have any solution.
HI Krishna - Looking at a trace, it would be hard to tell. I've seen in my days that the 9971 phone *may* choose a payload that doesn't quite fit welll with what it supports. Pending on the device, it works. Seeing that a C-Series sends multiple Payload types for H264 for H323 and SIP, it could be that the 9971 isn't choosing the best one.
I find this to be the fastest solution and reducing the offer for what the C-Series sends is the quickest way to resolve.
IntroductionCUCM Routing RulesDial String implementation PolicyCUCM Routing LogicSIP URI Call Routing Analysis+++ Case Study: 1 ++++++ Case Study: 2 +++Conclusion
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