[from-internal]
exten => _2XX,1,Dial(zap/g3/*${EXTEN}*)
exten => _NXXXXXX,1,Dial(ZAP/g1/${EXTEN})
exten => _NXXXXXXXXX,1,Dial(ZAP/g1/${EXTEN})
exten => _01.,1,Dial(ZAP/g1/${EXTEN})
exten => _NXXXXXX,2,Congestion
exten => _NXXXXXXXXX,2,Congestion
exten => _01.,2,Congestion