I’m using FreePBX 14.0.13.40 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.
You need to check the /var/log/asterisk/full logs. The CDR will tell you a call came in and what the disposition was, the full log will tell you what actually happened to the call.
I changed the destination to an other extension and the problem disappeared! I know that this can’t be consider as fixed, but it’s a workaround that for now it’s more than enough! As soon as possible I’ll do my investigation based on what you’ve told me and if I find something useful I will post it.
For the time thanks everyone for your help, I’m grateful!