Incumbent Local Exchange Carrier (ILEC):
A LEC is simply a telephone company that provides service to a local calling area.
An ILEC (incumbent local exchange carrier) is a telephone company that provided local service prior to the Telecommunications Act of 1996 which owns most of the local loops and facilities in a serving area. In the U.S., the Regional Bell Operation Companies (RBOCs) that were formed after the divestiture of AT&T and the Independent Operating Companies (IOCs) that are usually located in more rural areas or single cities.
Hazelton, Iuka, Kiowa, Lake City, Sharon, Sun City, and Turon
Burlington and Byron
Competitive Local Exchange Carrier (CLEC):
A company that builds and operates communication networks in areas and provides its customers with an alternative to the local telephone company within the existing ILEC’s territory. The term distinguishes new or potential competitors from established local exchange carriers (local exchange carrier) and arises from the Telecommunications Act of 1996, which was intended to promote competition between both long-distance and local phone service providers, to compete with the incumbent Regional Bell Operation Companies (RBOC).
Anthony, Attica, Harper, Medicine Lodge, and Pratt