The main drive to break up AT&T in 1984 was to end the vertical integration between manufacturing and near-monopolistic service activity. Accordingly, the
telephone market was split into a fully competitive segment of long-distance telecommunications, in which AT&T was restricted in compensation for being
authorised to keep its manufacturing activities, and a local telecommunications segment. The break-up resulted thus in the creation of the seven RBOCs (Regional Bell Operating Companies) which provided local telephony services in different geographical areas.