I have been having this strange problem for a while, but because I wasn't too fussed about it I never bothered asking. I have an Elastix Box (Ver 2.3.0) on which I now have 3 VfX lines. (Getting more and more! )
The problem is that, although all can receive calls, only one can make calls. I use the same settings in all of them, but only my oldest number 9950xxx2 is able to make calls.
I have port 5060 forwarded to my machine (yes I am running IPTABLES with Fail2Ban). I juggle the outgoing routes to force calls out of the other channels and I always get "all circuits are busy" . As soon as I try changing the port from 5060 to 5061 in the trunk settings, it tries to connect for a while but then fails again.
So upon running 3 vfx lines on the same machine, do I need each line to be forwarded to a separate port? (and maybe I am not forwarding correctly)? Or what other reason could make 1 line able to make calls and the other two not, when they have EXACTLY the same settings?
Here are the settings that work
User context : 9950xxxx