[Asterisk-Users] Would this work?

[AstGrp]

I am trying to implement a rollover of extensions.
 

exten => 3000,1,GotoIf($[${line1} = Congestion]?3:2)
exten => 3000,2,Dial(${line1},15,rt)
exten => 3000,3,GotoIf($[${line2} = Congestion]?5:4)
exten => 3000,4,Dial(${line2},15,rt)
exten => 3000,5,GotoIf($[${line3} = Congestion]?7:6)
exten => 3000,6,Dial(${line3},15,rt)
exten => 3000,7,GotoIf($[${line4} = Congestion]?1:8)
exten => 3000,8,Dial(${line4},15,rt)
exten => 3000,9,Hangup
 
The $line[x] represents a Zap Channel.
 
Thanks,
 
-gcc
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