Add Trunk SIP (chan_sip) Trunk

I just install new FreePBX SNG7-PBX16-64bit-2302-1
I notice that in Add Trunk the +Add SIP (chan_sip) Trunk is missing.
I need SIP (chan_sip) Trunk for Freephoneline
What do I do?


Back in 2018, pjsip was not compatible with trunks hosted by Fibernetics, including FPL.

The problem was that pjsip sends the 200 OK response to an incoming INVITE with a Contact header that has no username. This is perfectly valid according to the RFCs, but it somehow caused the Fibernetics server to not respond with an ACK, so incoming calls failed.

There was a long thread about this, in which I suggested various ways of getting it fixed, but there were no further updates.

AFAIK, pjsip still sends 200 OK with no username in Contact, though it’s possible that the behavior of Fibernetics servers has changed.

If not, it will take some effort to get this fixed and you should probably use chan_sip, at least in the short term.

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