I am able to dial direct extensions using my mobile data (no wireless) but I can't make an actual phone call. Basically, I can call Bob's extension by just dialing 100, but if I want to call the local pizza joint it will not work.
If I connect to my office wireless network, everything works fine. I assume because the wireless network I'm on exists on the same network as my PBX.
What am I missing?
Edit: This is a new install.