Routing

Hi Friends,
I need to send a particular area code numbers through my secondary route.
Do i need to do settings in outbound route or trunks?
If it is in outbound route,how to do settings? I have omitted that area code in primary trunk, but no use.
Omitted in outbound,completely blocked.
So i need solution for it.
Thanks in advance.
shashi

do you have more than 1 outgoing trunk ?
do you have an outbound route using trunk 1 with area code XXXXXXX ?
you are trying to dial area code XXXXXXY ?
set new outbound route to dial area code XXXXXXY only - nothing else.
set 2nd trunk as only destination for new outbound route
set 1|. or 9|. to access 2nd trunk - test.