ILEC- An ILEC (incumbent local exchange carrier) is a telephone company in the U.S. that was providing local service when the Telecommunications Act of 1996 was enacted. ILECs include the former Bell operating companies (BOCs) which were grouped into holding companies known collectively as the regional Bell operating companies (RBOCs) when the Bell System was broken up by a 1983 consent decree.
CLEC- In the United States, a CLEC (competitive local exchange carrier) is a telephone company that competes with the already established local telephone business by providing its own network and switching. The term distinguishes new or potential competitors from established local exchange carriers (LECs) and arises from the Telecommunications Act of 1996, which was intended to promote competition among both long-distance and local phone service providers.
MSO- A management services organization (MSO) is an organization owned by a group of physicians, a physician hospital joint venture or investors in conjunction with physicians. In some cases the hospitals owns the service bureau that sells various management services to medical staff. MSOs generally provide practice management and administrative support services to individual physicians or small group practices. One purpose of