I have a working FreePBX 14.0.11 with ports 5060 and 10000-20000 forwarded only for IP address of SIP provider.
Now trying to setup a remote softphone on my phone. Created an extension and an Incoming Route directing my second DID to that remote extension as destination.
Following the connect to the local network through OpenVPN (not the integrated one), I can initiate a call using the softphone just fine. However, when my second DID is called, the call is not picked up properly by the softphone. Actually, the softphone tries to pick up the call, but drops the connection immediately. The softphone history shows the calls as missed calls.
I would appreciate any hint about this problem.