Communications by computer terminals, namely, electronic transmission of data and documents via computer terminals; telephone communications services; electronic mail services; facsimile transmission; electronic transmission of messages; rental of telecommunications equipment and message sending apparatus; cellular, local and long-distance telephone services; providing teleconferencing and electronic communications facilities; audio and video teleconferencing; providing telecommunication links to computer databases and the Internet; data communications, namely, providing collocation services for voice, video and data communications applications; electronic store-and-forward messaging; computerized message transmission; telecommunications services, namely, local and long distance transmission of voice, data, graphics by means of telephone, telegraphic, cable and satellite transmissions