;PSEUDO DIALTONE abspielen
  exten => s,1,Playtones(dialtone1)

  exten => 0,1,Playtones(dialtone2)

  exten => _[1-9].,1,Dial(Zap/g2/${EXTEN:1},120)
  exten => _[1-9].,2,Congestion()
  exten => _[1-9].,102,Congestion()