I have been searching the forums and the web, and I haven’t found an answer to this question, so I thought I would go ahead and post it here and find out.
If you haven’t heard, Bandwidth.com had a problem with their main SIP trunking server on Friday and it took all my customers using them (5) down for a couple of hours - come to find out that they already had redundant servers set up, they just hadn’t bothered to tell most of their customers (me included).
So here’s the deal - in FreePBX I have set up three SIP trunks to correspond to the three Bandwidth.com servers:
And then on each outbound route, I set up all three trunks to be tried in order - this should give me a Fault-Tolerant setup, but the problem is it takes WAY too long to try the second and third trunks - by the time it even tries the second trunk, you think it isn’t working and have hung up.
How can I adjust that timer so that if it doesn’t get a progress message in say 10 seconds, it tries the next trunk, etc.
Or am I doing this wrong?