[ISDN-OUT]
exten => s,1,Answer
exten => s,2,Playback(beep)
exten => s,3,DigitTimeout,4
exten => s,4,ResponseTimeout,12
include => INTERN
exten => _XXX.,1,NoOp(${TIMESTAMP} ok, now we're going to dial ${Predigits}${EXTEN})
exten => _XXX.,2,Macro(DIALEXT,${EXTEN})
;exten =>...