What you are refering to is called static routing.
If there is a limit on the ammount of routes, it is well over a hundred routes.
On a static route, you setup a phone number or area code or country code, and instruct the Quintum to use a specific gateway for those calls.
If you have more than one gateway that serves the same exact area, you setup diferent priority for each gateway within a route.
I do have the whole CLI manual if you need to perform this job.
Write me to mike3799@yahoo and I will reply with the manual.
Your e-mail must be able to receive a lrge file (3.5 mb file)