BOC - Computer Definition
An operating telephone company owned by the AT&T Bell System and reporting directly to AT&T general headquarters. The 22 BOCs were spun off from AT&T as a result of the Modified Final Judgement (MFJ), also known as the Divestiture Decree, which took effect January 1, 1984. At that point, the BOCs were formed into seven Regional Bell Operating Companies (RBOCs). See also Bell System, MFJ, and RBOC.
(Bell Operating Company) One of 22 companies that was formerly part of AT&T and later organized into seven regional companies. See RBOC.