Okay, dann kommt hier mal meine Version:
extensions.conf:
register => 497666xxxxxx:
[email protected]/497666xxxx
[dialout]
exten => _.,1,Answer
exten => _.,2,Wait(15)
exten => _.,3,DISA(no-password|dial)
exten => _.,4,Wait(2)
exten => _.,5, Hangup
exten =>_.,102,Busy
exten =>...