exten => s,1,Dial(${ARG2},20,r)
exten => s,2,Goto(s-${DIALSTATUS},1)
exten => s-NOANSWER,1,Voicemail(u${ARG1})
exten => s-CHANUNAVAIL,1,Voicemail(b${ARG1})
exten => s-BUSY,1,Voicemail(b${ARG1})
exten => _s-.,1,Voicemail(u${ARG1})
und das sind die möglichen rückantworten des...