Outbound Routing
From PBXes
If you want to enter a separate routing for different Outbound numbers, you need to add a separate entry for each Outbound number.
The system works by looking at your Outbound routes from the top down and as you add new Outbound Routes, the Outbound route sequence number shown on the left column increases by 1. ie route 0, route 1,..etc
Next to "Numbers starting by" you can either enter a route that starts with different numbers like 13 or you can define a specific call plan that matches numbers depending on the number dialled.
I have discovered that you can't add multiple starting numbers even if you separate them with a , or ; or put them on separate line. You have to add a separate Outbound route for each "Numbers starting by" digits