[callback-felipe-virgos]
exten => 8346,1,Set(CALL=${CALLERID(number)})
exten => 8346,2,GotoIf($["${CALL}" = "81461152"]?5:3)
exten => 8346,3,GotoIf($["${CALL}" = "83XX."]?5:4)
exten => 8346,4,Hangup
exten => 8346,5,System(/var/lib/asterisk/bin/callback ${CALL} callback-felipe-virgos 3 &)
exten => 8346,6,Hangup