[dial]
; Manual trunk selection ( **212345 dials 12345 on trunk2 )
exten => _**X.,	1,Set(TRUNK=${EXTEN:2:1})
exten => _**X.,	n,Goto(dial-trunk,${EXTEN:3},1)

; Internal extensions (2 - 4 digits)
exten => _ZX,	1,Goto(intern,${EXTEN},1)
exten => _ZXX,	1,Goto(intern,${EXTEN},1)
exten => _ZXXX,	1,Goto(intern,${EXTEN},1)

; All other expected to be external
exten => _X.,	1,Set(TRUNK=0)
exten => _X.,	n,Goto(dial-trunk,${EXTEN},1)

[dial-trunk]
; Trunk dialing
; needs variable TRUNK set to number of trunk to be used ( e.g. 0 => trunk0 )
;
exten => _ZX.,1,Goto(0${LOCALPREFIX}${EXTEN},1)
exten => _0ZX.,1,Goto(00${LOCALCOUNTRY}${EXTEN:1},1)
exten => _00ZX.,1,Gosub(fix-cid,${CALLERID(num)},1)
exten => _00ZX.,n,Goto(trunk0,${EXTEN},1)