exten => _X.,200,SetVar,CALL_TYPE=Forward_TO_${EXTEN}
exten => XXXX,201,Dial(IAX2/onsite/${EXTEN})
exten => XXXXXXX,201,Dial(IAX2/localarea/${EXTEN})
exten => 1XXXXXXXXXX,201,Dial(IAX2/longdistance/${EXTEN})