RBOC (Regional Bell Operating Company) Also known as Regional Holding Company (RHC). In the United States, each of the seven regional companies formed by the Modified Final Judgement (MFJ), which broke up the AT&T Bell System effective January 1, 1984. Each RBOC comprised one or more of the 22 Bell Operating Companies (BOCs) that previously were wholly owned by AT&T. Over time, each RBOC fully absorbed its component BOCs, creating a single legal entity with a centralized management structure. As Cincinnati Bell and Southern New England Telephone (SNET) were not wholly owned by AT&T, they were divested as standalone operating telephone companies. Table R-1 maps the BOCs into the RBOC organizations. |