Specifying Outbound Route

Hi,

We currently have 3 SIP Lines within 3 1 PBX system. Currently all outbound calls go through the first outbound route.

Is there any way to specify which extensions go through which outbound route?

For example:

2XX - Go through Outbound Route 1

3XX - Go through outbound Route 2 and ignore Outbound route 1

1XXX - Go through outbound route three and ignore outbound route 1 & 2

Hope this makes sense

Thanks,

Mohammed