We just had a a strange interruption to out service. Everything has been working great. There have been no updates or changes at all to FreePBX/Asterisk. All the endpoints are working, registered (have service), and can place calls internally.
Unfortunately and out of the blue, we started getting a strange “Q.850; cause=17” message whenever we tried to dial an out side line. (FWIW, all our phones are Yealink, mostly T27G and T48G.)
At the same time we started getting complaints (over cell and email) that people cannot call in as well.
I do not see anything wrong on the FreePBX Dashboard, nor on the SIP provider’s status board. So, I rebooted our server just to se if that would clear the issue.
It didn’t. After a long but regular reboot, all of the endpoints successfully (re)registered, and for a minute or so I could still get the Q.850; cause=17 error.
Now, the Q.850 message does not show up anymore, but when trying to dial out, it emadiately goes to the “All circuits are busy now. Please try your call again later” voice message. And, when trying to dial in on any of the DIDs, it just give busy signal.
Does anyone have any ideas on what logs I can look at or where else I might spelunk in oredr to find what’s failing?
Every things looks just fine, except it isn’t.