asterisk users - Jul 2008 - Call Forwarding Lopp Prevention

i have two extensions which have call forwarding enabled when they are
"busy" to forward the caller to each other.

11 ==on busy==> 12
12 ==on busy==> 11

when both extensions are Busy a large number of stale calls will be
made in the system!
how can i prevent this mess in my system?

Paradise Dove wrote:
> i have two extensions which have call forwarding enabled when they are
> "busy" to forward the caller to each other.
>
> 11 ==on busy==> 12
> 12 ==on busy==> 11
>
>
>   
exten => 11,1,Set(GROUP()=Loop11_Detect)
exten => 11,n,NoOP(Loop Detect for Extension 11: 
${GROUP_COUNT(Loop11_Detect)})
exten => 11,n,GotoIf($[ ${GROUP_COUNT(Loop11_Detect)} > 2 ]?11,100)
exten => 11,n,Dial(SIP/12)

exten => 11,100,Voicemail(11 at sip|b)
exten => 11,101,Hangup(17)


Doug

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