Andrew Kohlsmith wrote:
On March 9, 2005 10:43 am, Cirelle Internet Products wrote:
How are you determining a fallback condition from one voip to another?
Mine's rather simple but it works well:
[macro-nufone-dial]
exten => s,1,GotoIf($[$ACCOUNTCODE != ""],s,gotac)
exten => s,n,SetVar(ACCOUNTCODE=${ARG2})
exten => s,n,GotoIf($[{$ARG2} != ""],s,gotac)
exten => s,n,SetVar(ACCOUNTCODE=benshaw)
exten => s,n(gotac),SetAccount(${ACCOUNTCODE})
exten => s,n,GotoIf($[${LEN(${ARG1})} = 10]?s,add1)
exten => s,n,Dial(IAX2/[EMAIL PROTECTED]/${ARG1},,g)
exten => s,n,NoOp(NUFONE: HANGUPCAUSE is ${HANGUPCAUSE} and DIALSTATUS is ${DIALSTATUS})
exten => s,n,Goto(dial-${DIALSTATUS},1)
exten => s,n(add1),Dial(IAX2/[EMAIL PROTECTED]/1${ARG1},,g)
exten => s,n,NoOp(NUFONE: HANGUPCAUSE is ${HANGUPCAUSE} and DIALSTATUS is ${DIALSTATUS})
exten => s,n,Goto(dial-${DIALSTATUS},1)
exten => dial-CANCEL,1,Hangup exten => dial-ANSWER,1,Hangup exten => dial-NOANSWER,1,Hangup exten => dial-BUSY,1,Busy exten => dial-CONGESTION,1,Macro(pri-dial,${ARG1},${ARG2}) exten => dial-CHANUNAVAIL,1,Macro(pri-dial,${ARG1},${ARG2})
; handle NXX-NXX-XXXX, 1-NXX-NXX-XXXX and 011... [nufone] exten => _NXXNXXXXXX,1,Macro(nufone-dial,${EXTEN}) exten => _1NXXNXXXXXX,1,Macro(nufone-dial,${EXTEN:1}) exten => _011.,1,Macro(nufone-dial,${EXTEN})
You can ignore the accountcode stuff, we handle calls for several businesses so I sort the accounting out that way.
For contexts that I want to have calls go out to Nufone I include the 'nufone' context. As you can see, it handles 10-digit, 11-digit and international (variable-digit) extensions.
Basically if it's a 10-digit #, add a '1' to it. Then attempt to Dial() through my Nufone account. You'll notice the 'g' flag to the Dial() application which tells it to go on in context after a hangup. I then check the status of DIALSTATUS and if the result was CONGESTION or CHANUNAVAIL I fall back and dial out my PRI.
Personally I think that CONGESTION should never be returned unless the other side SAYS "piss off, I'm too busy to handle your call" but IAX will throw back a CONGESTION status if it can't reach the other side, which is why I have to check for both CONGESTION and CHANUNAVAIL.
-A.
Thanx Andrew
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