Documentation states, "While you can manually set the callerID to a specific number, it must be set to one of the U.S. or Canadian phone numbers attached to your application."
Does this refer to the numbers specified in the app such as the number specified under "Phone numbers associated with your application. You can delete existing numbers or add new ones." on the app development page?
If that's the case, how do I go about using one of my published (non-mobile) numbers?