Dialplan variables

Hi, how can I simplify this dialplan?

[code]exten => 1030,1,Dial(DAHDI/1/030,20)
exten => 1030,2,Hangup

exten => 2030,1,Dial(DAHDI/2/030,20)
exten => 2030,2,Hangup

exten => 3030,1,Dial(DAHDI/3/030,20)
exten => 3030,2,Hangup

exten => 4030,1,Dial(DAHDI/4/030,20)
exten => 4030,2,Hangup

exten => 5030,1,Dial(DAHDI/5/030,20)
exten => 5030,2,Hangup

exten => 6030,1,Dial(DAHDI/6/030,20)
exten => 6030,2,Hangup

exten => 7030,1,Dial(DAHDI/7/030,20)
exten => 7030,2,Hangup[/code]

Hello.

exten => _[1-7]030,1,Dial(DAHDI/${EXTEN:0:1}/${EXTEN:1},20) exten => _[1-7]030,2,Hangup