BOC The local (or regional) telephone company that owns and operates lines to customer locations and Class 5 Central Office Switches. BOCs have connections to other COs, Tandem ( Class 4 Toll) offices and may connect directly to IECs like LDDS WorldCom, AT&T, MCI, Sprint, etc. BOC may refer to the nineteen Bell Operating Companies that are owned by the seven RHCs (Regional Holding Companies) (not including Cincinnati Bell or Southern New England Telephone). The BOC role was originally defined by the 1982 Modified Final Judgement that specified the terms of the AT&T Divestiture). For Example, the three BOCs: Mountain Bell, Northwestern Bell and Pacific Northwest Bell are owned by the U.S. West RHC. Each BOC may service more than one LATA, but BOCs are generally constrained from providing long distance service between LATAs.
The local, or regional, telephone company that owns and operates lines to customer locations and central office switches. BOCs have connections to other companies, tandem (class 4 toll) offices, and may connect directly to interexchange carriers like MCI WorldCom, AT&T, and Sprint.