Today I have seen today all of our PBX’s failing outbound calls with BUSY, there are multiple routes that could have completed the call from different providers so it’s NOT the SIP provider causing the issue. These servers are in different states, different ISP’s etc and I even manually changed the route to go to specific providers all in turn returning the BUSY with many of the calls actually NOT showing up on the provider side.
In searching I found here a reference to the Call Routing module at one time causing a similar problem.
The thing that is getting to me is that it was on ALL of the PBX’s, all in the same time window with NOTHING common between the PBX’s.
These are all established working for several months, in different networks, with different firewalls etc, they all could not possibly have a nat issue at the SAME EXACT time, which is the only reason why I posted…
I haven’t updated anything in over a week so this is not something introduced recently.
Let me see if I can sanatize some of the log information. It’s just too much of a coincedence thay all did it in the same time window.
This issue came up on more than 10 servers at the same time.
Several Boxes running different versions, including the older branch.
I tried 3 of them and everything looks normal, see below: