I moved from an ancient RPi with FreePBX v12 to a RPi P3 with FreePBX v15.
Same settings, same phones connected, same VoIP provider.
When I call an external number, the callee’s phone rings, but no audio on both ends…
When I get an external call, my phone rings, but no audio on both ends.
(SIP ALG is deactivated on the router).
Any idee what the problem might be and how to fix it?
Thanks for helping