[Asterisk-Users] dialplan question

[Eric Wieling aka ManxPower]

Matthew Simpson wrote:
> Hello, I have a dial plan that tries to place a call over several 
> different outbound gateways, like this:
> 
> exten => _1X.,1,Dial(SIP/${EXTEN}@proxy1)
> exten => _1X.,2,Dial(SIP/${EXTEN}@proxy2)
> exten => _1X.,3,Dial(SIP/${EXTEN}@proxy3)
> exten => _1X.,4,Dial(SIP/${EXTEN}@proxy4)
> exten => _1X.,5,Hangup
> 
> it works fine if one of the gateways is busy [rolls to the next dial 
> statement].  However, if the phone number itself on the proxyX gateway 
> is PSTN-busy, then it correctly returns 486 busy here, but execution 
> continues, which wastes trunks trying a busy number on each gateway.
> 
> What is the best way to handle this?  Inserting +101 extensions with the 
> Hangup command ?  Will that still properly signal 486 busy here back? 
> Should I be using Congestion instead of Hang up ?

The Dial command sets the DIALSTATUS variable as documented in "show 
application dial" and you can see usage examples in the stdexten macro 
in extensions.conf.sample in the asterisk/configs source code.