Does the originate_timeout start as soon as the invite is sent? If we get a 180 ringing 6 seconds in, does it restart? How is post dial delay (PDD) handled in this case? Does that have to be added into the originate_timeout seconds?
We have some carriers that take several seconds (up to 10-12) to actually come back with a cause code, if we fail over to a new carrier it can mess things up if we get back a 503 10 seconds into a 20 second origination_timeout.
originate_timeout looks for early media 183 or actual answer 200 ok
to stop countdown.
if you have set ignore_early_media=true before bridge, then originate_timeout will count seconds until it gets 200 ok if not it will drop the call.
try bridge_answer_timeout which looks only for 200 ok