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SIP Trunk - No Audio on some calls


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We have a new SIP Provider connected to our Swyx Server and for 90% of calls have no issue. For the other 10% we get no audio.

The SIP Provider has suggested that its because Swyx is not responding to re-invites. The PBX seems to be sending a 100 Trying but never follows up with 200 OK with SDP.


Is there a way to switch on support for re-invites as I know other PBX have this function?


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SwyxWare always answers to a Re-Invite. Either positive (200 OK) or negative (4xx). If you see only a 100 Trying, then you should contact your reseller and open a support ticket.

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