Hi,
Our SIP provider requires us to send a SIP408 or a SIP 480 out when the called extension is not answering.
I’ve tried a lot of settings in freePBX, but non of them have shown the desired result. In the extension itself I tried setting the optional destinations for No Answer to:
Terminate Call - Hangup (results in SIP 603)
Terminate Call - Congestion (results in SIP 487)
Unavailable Voicemail if enabled and disabled the VM (results in SIP 503)
I have also installed the “Trunk Failure Handling”, but I get the impression this is only working on outbound calls.
Is it possible to return 408 or 480 back to the caller when the called extension is not answering?