exten => _006XXXXXXXX,1,ChanIsAvail(Zap/3)
exten => _006XXXXXXXX,2,NoOp($AVAILCHAN)
exten => _006XXXXXXXX,3,NoOp(Zap 3 is avail? = "${AVAILCHAN}")
exten => _006XXXXXXXX,4,Cut(theChannel=AVAILCHAN,,1)
exten => _006XXXXXXXX,5,Gotoif($["${theChannel}"="Zap/3"]?6:8)
exten => _006XXXXXXXX,6,Macro(portables3,${EXTEN:2})
exten => _006XXXXXXXX,7,Goto(8)
exten => _006XXXXXXXX,8,Macro(phonesystems2,${EXTEN:1})
exten => _006XXXXXXXX,9,NoOp