U.S. Department of Justice ruling (effective 9/84) that requires all RBHCs with ESS systems using SPC technology, and serving a market of at least 10,000 access lines, to offer the same quality of connection at the same rates to all common carriers. Under this arrangement, subscribers choose a primary long-distance carrier that they access by dialing "1" + area code + telephone number. Other long-distance carriers are reached by dialing "10" plus a three-digit access code unique to each carrier, then dialing "1" + area code + telephone number.
Ability to choose between the different long-distance carriers. In rural areas, some local exchange carriers are still serviced by only one long-distance carrier.
(1) The concept -- enforced by the 1984 Modified Final Judgement (MFJ) -- that all Interexchange Carriers (IXC) must have the same access to the local BOC facilities as AT&T enjoys; provided as Feature Group D interconnection. (2) The arrangement whereby the BOCs provide trunk side connections to an End Office (EO), Automatic Number Identification (ANI), answer supervision, dial pulse or DTMF signal recognition.