This article will demonstrate how to route calls through Level3.
In NMS, browse to Dial Planning>Call Routing. In the Find Destination field, enter "17578100969" and click Refresh.
Click the Destination sip:17578100969@* and change the destination to the desired outbound number.
Click Clone. Search the connection you just created. Ensure the # Con field displays 5 connections that match the following:
You can test that the routing has been updated by calling the number and checking call traces to ensure the call is being routed through the updated IP addresses.