((a)) As used in this subchapter, the term “telephone service” shall be deemed to mean any communication service for the transmission or reception of voice, data, sounds, signals, pictures, writing, or signs of all kinds by wire, fiber, radio, light, or other visual or electromagnetic means, and shall include all telephone lines, facilities, or systems used in the rendition of such service; but shall not be deemed to mean message telegram service or community antenna television system services or facilities other than those intended exclusively for educational purposes, or radio broadcasting services or facilities within the meaning of section 153() of title 47.
((b)) As used in this subchapter, the term “rural area” shall be deemed to mean any area of the United States not included within the boundaries of any incorporated or unincorporated city, village, or borough having a population in excess of 5,000 inhabitants.