The answer to Uverse codes is that you must use a Toggle Code for many remotes like RTI. For each number key, make a macro which toggles between 1A and 1B, 2A and 2B etc.... These codes are online at [Link: pastebin.com]
and I have used them with a Cisco 7500 DVR and I think they will work for the Pace DVR that AT&T also uses! Good Luck!!