My FreePBX install has suddenly stopped accepting any inbound calls. The configuration has not been touched for a while, yet every number on the system now rings out with no sign of life inside the PBX and no visible error messages. Outbound calls still work, trunks show as registered, but nothing is landing on the extensions. I need a seasoned FreePBX / Asterisk troubleshooter to jump in, trace what is blocking the inbound route, correct whatever trunks, inbound routes, firewall, or SIP settings are at fault, and get calls flowing again. Once it is working, I would like a brief note of what you changed so I can keep the system stable going forward. You will have full web GUI access on request; testing can be done live as this is a production box. I am in Australia, so I will need to be present to test, so day time (Brisbane Time)