Sorry I couldn't be more specific. All I know is there's an antenna on the top of the building that receives the signal. This has a cable that runs down to the box on the top floor that then boosts the signal and send it out over a large coax cable that is connected to many antennas in the building. The coax just branches out with antennas along the way. My assumption was that at least the coax itself me be ok for AT&T but the antennas and other equipment may not be. Does that sound realistic?