Can't register with external VOIP lines

[Vincent Bezzina]

Tried two - VOIPGATE and SIPGATE
Always getting the same error:

14:39:12.212 ExtLine::Register [CM010002] Line DN='10002' device='SIPGATE' can not be registered. External IP isn't resolved.
14:39:12.212 ExtLine::Register [CM110001] Use External IP for device line registration DN='10002' device='SIPGATE'

The machine running 3CX was placed in the DMZ and firewall was turned off at one point. Still no change.

 

[Mirzab]

Usually External IP issues pertain to STUN Server, is it configured properly in 3CX?

DMZ on some routers in my experience is not the best solution, even for testing. Ensure the proper ports are forwarded.