Something

[globals]
OUTBOUNDTRUNK=SIP/sipgate
EXTENSION1=SIP/AUDIOLINE

[internal]
include => outbound-local
include => outbound-long-distance

exten => 203,1,Dial(${EXTENSION1},,r)


[outbound-long-distance]
exten => _9XXXXXXXXXXX,1,Dial(${OUTBOUNDTRUNK}/${EXTEN:1})
exten => _9XXXXXXXXXXX,2,Congestion( )
exten => _9XXXXXXXXXXX,102,Congestion( )

[outbound-local]
exten => _9NXXXXXX,1,SayDigits(${EXTEN})
exten => _9NXXXXXX,2,StripMSD,1
exten => _NXXXXXX,3,Prefix,0117
exten => _0117NXXXXXX,4,SayDigits(${EXTEN})
exten => _0117NXXXXXX,5,Dial(${OUTBOUNDTRUNK}/${EXTEN})
exten => _0117NXXXXXX,6,Congestion( )
exten => _0117NXXXXXX,106,Congestion( )