[asterisk-users] Setting up an outgoing trunk group

[Darrin Henshaw]

I would use the ${DIALSTATUS} variable. In your dialplan dial the first trunk you wish, then afterwards examine the ${DIALSTATUS} variable. If that is not equal to ANSWER then dial your second trunk and so on.

For example:

exten => s,1,Dial(ZAP/1/${EXTEN})
exten => s,n,ExecIf($["${DIALSTATUS}" != "ANSWER"]|Dial|(SIP/out1/${EXTEN})
exten => s,n,ExecIf($["${DIALSTATUS}" != "ANSWER"]|Dial|(SIP/out2/${EXTEN})

That's kind of rough but it should work.

Cheers,


Darrin Henshaw | IT Administrator | MCTS: Exchange 2007 | MCSE 2003 | LPIC
Ignition Support Center | www.ignition.bm
Bermuda (441) 496-4319 | Cayman (345) 947-4357 | Halifax (902) 482-1288
Atlanta | Bermuda | Cayman | Halifax


-----Original Message-----
From: asterisk-users-bounces at lists.digium.com [mailto:asterisk-users-bounces at lists.digium.com] On Behalf Of Geoff Lane
Sent: Tuesday, January 20, 2009 13:31
To: Asterisk Users
Subject: [asterisk-users] Setting up an outgoing trunk group

Hi All,

I'm confused! My Asterisk system has a Zap trunk and three SIP trunks.
I'd like to configure the dialplan to route via the first trunk in a
list and if that's not available or it's busy, fall over to the
second, then to the third, etc.

AIUI Dial(Zap/1&SIP/out1&SIP/out2/${EXTEN}) rings all the trunks in
the list and bridges to the first to answer. Unfortunately, that's not
what I want, which is (in pseudocode):
 if Zap/1 is available then
    Dial(Zap/1/${EXTEN})
 elseif SIP/out1 is available then
    Dial(SIP/out1/${EXTEN})
 else
    Dial(SIP/out2/${EXTEN})
 end if

Also, to make it easier to reconfigure quickly, I've got a variable
defined in [globals] thus:

MainOutbound=Zap/1&SIP/out1&SIP/out2

so the Dial statement above would be written in the dialplan thus:

Dial(${MainOutbound}/${EXTEN})

So if I can't find the syntax to get the Dial application to do what I
want I guess I'd need to use a dialplan function or AGI.

Can anyone help?

TIA,

--
Geoff


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