Hello all,

I am using FreeSwitch as a WebRTC gateway thanks to its Websocket support (in my case WSS), but I'm facing this strange problem. Audio and Video calls are working perfectly fine, but when I try to set a call On Hold, FreeSwitch replies with "488 Not Acceptable Here" error to the ReINVITE I'm sending.

The only error I can see in the logs is:

 [ERR] sofia.c:7280 Reinvite Codec Error!

The only difference between the original INVITE and this ReINVITE is that I try to set IP address to 0.0.0.0, port to 0 and media attribute to inactive. I don't understand what part of the SDP, FS doesn't "like".

Attached you can find a more detailed log file.

Thank you very much in advance.

Regards,
--
Sergio García Ramos
VoIP Engineer @ Quobis | e: sergio.garcia@quobis.com | t: +34902999465