The following words, terms and phrases, when used in this article, shall have the meanings ascribed to them in this section, except where the contest clearly indicates a different meaning:
Any person furnished service classified as "business" under tariffs filed with the State Corporation Commission.
Any service taxable as local telephone service under the provision of the Internal Revenue Code of 1954, as amended, relating to federal communications taxes, as such provisions were in force and effect on December 31, 1971.
Any two-way mobile or portable local telecommunications service, including cellular mobile radio telecommunications service and specialized mobile radio.
Every person engaged in the business of selling mobile local telecommunications services to users/consumers.
Any person having a telephone number for a mobile local telecommunications service who has a taxable purchase of such service or on whose behalf another person has made a taxable purchase of such service.
Any person furnished service classified as "residential" under tariffs filed with the State Corporation Commission.