I have succesfully setup PBXww with a flynumber (Guatemala) and connected to a SIP Account. Using the address and credentials, the SIP Trunk on my 3CX PBX and on PBXww show up as registered succesfully. I am also receiving inbound calls with no problem.
When calling outbound, I get the following error:
Registration failed for Guatemala Flynumber SIP Trunk
Cause: Cause: 401 Unauthorized/REGISTER from 188.8.131.52:5060
Seems like something my PBX sends to FlyNumber is causing the registration not to work.
STUN is disabled, sRTP is disabled and I’m dialing out with this format 50225079797.
UDP Ports 10000-32767 and TCP 5060 are open on the firewall for the following IPs:
What am I missing? Thanks for the help.
From reading around, I suspect it might have something to with this setting in 3CX but have no clue.