Hello,

I am trying to establish a video call from a linPhone to a Polycom device.

Polycom is configured as an external gateway device on my Freeswitch.

I have tried several tests and I have added the H264 configuration in file modules.conf.xml : <load module="mod_h26x"/>

and also in vars.xml:

  <X-PRE-PROCESS cmd="set" data="global_codec_prefs=OPUS,G722,PCMU,PCMA,H264,VP8"/>

  <X-PRE-PROCESS cmd="set" data="outbound_codec_prefs=OPUS,G722,PCMU,PCMA,H264,VP8"/>

I am now able to establish the call from linphone to Polycom but only audio is established. I have looked at SIP trace with wireshark and the 200OK that is send back from Freeswitch to LinPhone has only VP8 in the SDP.

Linphone -----> Invite (VP8, H264) ----->  Freeswitch -----> Invite (VP8, H264) ----->  Polycom

                <----- 200OK (VP8)         <-----                     <----- 200OK (H264) <----  

I have tried different configuration without success. Do you have an idea of what may be missing to have H264 in the 200OK instead of VP8 ?

Or is there another solution ?

Thanks in advance for your help

Fred

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