AT&T Co says it is studying a device that would turn an ordinary television set into a terminal that could call up films, shows and information or act as a video telephone, but it insisted that it is only in the prototype phase and denied a Los Angeles Times story that a field test of the technology would be announced next month; it would neither confirm nor deny that it is teaming up with BellSouth Corp and Viacom International Inc in the interactive television work.
