I have a Uverse Voice number that I want as my Caller-ID when dialing out until I port my Uverse Voice number over to Voipo. I add my Uverse Voice number to the Mobile section, click Verify and the phone never rings. Does it only work with a Google Voice number or a true mobile number? Uverse Voice is like a landline but I am testing Voipo before I switch over completely. Can a Tech person add it manually for me to choose as my outgoing CID?