I’m using FreePBX 126.96.36.199 with a pstn line and an analog card, and until today everything was fine.
All of a suddenly the incoming calls started to end to congestion. The caller hear one ring and as soon the freepbx take the call, immediately hang up. If I check CDR report says congestion. That had happened again some years before and I couldn’t resolve it. I had reinstall everything. The freepbx is not exposed to Internet, it’s behind a NAT.
Any ideas what could gone wrong? The problem started some days after installed some available updates, for system and modules too.
Thanks in advance for any help you will provide.