Failover to next gateway in time

[duebel-]

I have two gateways for outbound and inbound calls.
If the first gateway does not make a successfull SIP connection in time the second gateway should be chosen.

This failover is working but the failover time is too high. The relevant timeout value is "dial_timeout" which defaults to 120 seconds. This value cannot be lowered significantly because it is the maximum ringing time.

Another value like progress_timeout (http://wiki.freeswitch.org/wiki/Variable_progress_timeout) should be introduced in the dial plan. I tried introducing progress_timeout=5 which is acceptable for most users. But then huntgroups and ACDs do nor work anymore as expected. This introduction has to be done in a more sophisticated way... ;-)