[callthrough-cp]
exten => s,1,NoOp, dial from ${CALLERIDNUM}
exten => s,2,Answer
exten => s,3,Background(hello-cp)
exten => s,4,DigitTimeout(15)
exten => s,5,ResponseTimeout(15)
exten => s,6,WaitExten(10)
exten => s,7,Dial(local/2649@limited,15,H|g)
exten => s,8,Goto(s,3)


exten => #,1,Hangup

exten => t,1,Goto(#,1)
exten => i,1,Playback(invalid)

exten => 0,1,Playback(transfer)
exten => 0,2,Goto(s,7)

exten => _NNNN,1,NoOp, dial to ${EXTEN}
exten => _NNNN,2,Playback(transfer)
exten => _NNNN,3,Dial(local/${EXTEN}@limited,15,H|g|t)
exten => _NNNN,4,Hangup
exten => _NNNN,104,Playback(unavailable)