Well, it works for me .. YMMV.
Yesterday I had a problem where I had a meridian talking to * via a PRI
card, and from * to the pstn via an isdn30 link. The problem was that if the
number was bad, or engaged then the meridian line simply dropped, not giving
the operator any indication of what occurred.
With much help from this list, I managed to construct a dialplan which
solved our issues.
I've attached below a snippet from the dialplan hoping that it will help
someone else.
If the hangup cause has not been catered for, the error number is read to
the operator with a message to contact tech support.
Julian.
[dial-isdn30]
exten => _XXXXXX,1,Dial(Zap/g3/${EXTEN},40)
exten => _XXXXXX,2,NoOp(HANGUPCAUSE is ${HANGUPCAUSE})
exten => _XXXXXX,3,Goto(dial-result|r${HANGUPCAUSE},1)
exten => _XXXXXX,4,Hangup()
[dial-result]
exten => r0,1,Hangup()
exten => r1,1,playback(discon-or-out-of-service)
exten => r1,2,Hangup
exten => r16,1,Hangup()
exten => r17,1,Busy()
exten => r18,1,playback(the-number-u-dialed)
exten => r18,2,playback(is-curntly-unavail)
exten => r18,3,hangup
exten => r27,1,playback(discon-or-out-of-service)
exten => r27,2,hangup
exten => r28,1,playback(that-is-not-rec-phn-num)
exten => r28,2,hangup
exten => r31,1,Congestion()
exten => r34,1,Congestion()
exten => r42,1,Congestion()
exten => i,1,playback(error-number)
exten => i,2,saydigits(${HANGUPCAUSE})
exten => i,3,playback(is-not-set)
exten => i,4,playback(please-contact-tech-supt)
exten => i,5,congestion()