Has anyone here experienced this odd issue:
Intermittently, people making calls to our company are not hearing any ringing - only silence. Followed by ‘we have not received a valid response’. This happens at odd times - and when it happens, it affects all of our inbound routes.
It appears that the caller is going straight to an IVR (with no announcement or voice).
I cannot pinpoint what happens, since I don’t know when it actually breaks. I end up finding out when an 30 minutes go by without a call and then get suspicious.
This happens on ALL of our routes, even routes that go directly to an extension or ring group without ever going to an IVR.
The only thing that resolves it is doing a restart of asterisk. I cannot find any errors in /var/log/asterisk/full.
I am scratching my head, any help would be appreciated.