6110Telecommunication Activities with Wires, Wireless, and

operation, maintenance, or provision of access to facilities for the transmission of recordings, data, text, voice, and video using cable, wireless, or satellite telecommunications infrastructure, including: | operation and maintenance of switching and transmission facilities to provide point-to-point communications via terrestrial lines, microwaves, or a combination of terrestrial and satellite lines; | operation of cable distribution systems (e.g., for the distribution of data and television signals) with or without the provision of third-party video-on-demand services to subscribers; | provision of internet access by telecommunications infrastructure operators; | maintenance and operation of cellular and other wireless telecommunications networks, including paging systems; | distribution of visual, audio, or text programs received from cable networks, local television stations, or radio networks to consumers via direct-to-home satellite systems or via internet protocol television (IPTV); | provision of voice over internet protocol (VoIP) services by infrastructure operators. Transmission facilities carrying out these activities may be based on a single technology or a combination of technologies. This sub-class also includes the activities of providing fixed telecommunications networks for public services and leased circuits, including data communication connection activities that are sent in packets through a central office or through other networks, such as the Public Switched Telephone Network (PSTN), as well as the activities of providing terrestrial networks that serve certain mobile customers, such as radio trunking services and radio calling services for the public.