VoIP calls come in, not out
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But isn't that the odd part in this problem? I can see the call setup working no matter if I call in or call out.
It's only the audio that's not working and only on outgoing calls. I can also see the missing audio but I can't tell why it's happening.
The firewalls don't seem to be blocking it. I'll check the ITSP, maybe there is a function for setting the UDP ports and maybe they aren't in the same range or something.
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The audio and SIP traffic don't have to take the same path. The SIP goes via the SIP server where the phone is registered but often the RTP audio does directly between the end points. It depends what the server is sending to the phone to use and you need to look in the SIP call setup packets to see that.
That's why calls to a phone at the SIP server site might well work because traffic would be using the same route/IPs.
In some situations that's why audio might fail. If the PBX sends the local phones IP to connect to with RTP and the remote phone doesn't have access to that for example.
In both cases you can usually see what the problem is by looking in the SIP call setup.Steve
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I just found an old email about this thread and had forgotten about it because once you read an email, it's no longer highlighted. I felt I should come back to close it.
The problem was unrelated to pfsense completely. What it was is that I had a test SIP system on another network using the same ITSP. When it would register with the ITSP, it would break registrations from the second SIP server, the one I was actually using now.
Once I shut down the original, everything started working again.
Sorry it took so long to come back and explain this and thank you for helping me.
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