[inbound_pri]

; The following will match all four-digit DNIS:

exten => _XXXX,1,Answer()
exten => _XXXX,n,Playback(tt-weasels)
exten => _XXXX,n,Hangup()

; and the following will match more specifically on 2368:

exten => 2368,1,Dial(IAX2/name_of_iax_peer/extension_to_dial)