ich habs jetzt mal so gemacht:
extensions.conf:
[xlite]
exten => _20[0-2],1,NoOp("call for "${EXTEN})
exten => _20[0-2],2,Dial(SIP/${EXTEN},60,tr)
exten => _20[0-2],3,Congestion
[analle]
exten => analle,1,NoOp("analle")
exten => analle,2,Dial(SIP/200&SIP/201&SIP/202,60,tr)
exten =>...