search for: itsp2

...works. If one ITSP is unavailable the call flow cascades to the second ITSP and connects with audio. [outgoing] exten => _1NXXNXXXXXX,1,NoOp(${CALLERID(all)="" <>}) exten => _1NXXNXXXXXX,2,Dial(SIP/${EXTEN}@ITSP1) exten => _1NXXNXXXXXX,3,Dial(SIP/${EXTEN}@ITSP2) If we attempt calls from the PBX over the PRI connected to the Astlinux Gateway the calls connects, but there is no audio. This is what we see: ITSP1: Accepting call from 'XXXXXX' to 'XXXXXX' on channel 0/22, span 1 Executing [XXXXXX at outgoi...

...ITSP1] context=incoming-sip type=friend host= my1.itsp.com username=me secret=xxxxxxx nat=no canreinvite=yes insecure=port,invite ; do NOT remove this qualify=yes ; do NOT remove this dtmfmode=rfc2833 ; should match what is set on your account disallow=all allow=ulaw ; set in/out codec here ; [voip-ITSP2] context=incoming-sip type=friend host= my2.itsp.com username=me secret=xxxxxxx nat=no canreinvite=yes insecure=port,invite ; do NOT remove this qualify=yes ; do NOT remove this dtmfmode=rfc2833 ; should match what is set on your account disallow=all allow=ulaw ; set in/out codec here