billing and collection services for others; ordering and maintenance administrative support services for others; providing electronic access to telephone directories on computer

switched access telephone transmission services; special access services comprised of dedicated facilities leased to interexchange carriers; broadband transmission services; exchange access connectionless data service; exchange access frame relay service comprised of packet switching; customer access service to reconfigure, troubleshoot and receive alarms from voice or data leased private networks; high capacity digital data transmission service; integrated service digital network service which integrates voice, data and video transmissions simultaneously over a single line; intraLATA optical fiber-based private line service; full duplex intraLATA private digital transport service; region-wide public packet switching service which supports interactive data applications; 500, 800, 900 number and WATS telephone access service; all in the field of interexchange long distance telephone carriers