telecommunication equipment, namely, central office, local, tandem, and gateway switches; wire and wireless private automatic branch switches; key telephone switches; [ data packet network switches; frame relay switches; remote switches; cellular mobile telephone switches; ] synchronized optical network access, transport and switching nodes; [ base site controllers, transceivers and test bays; microwave radios and transmission systems, automated attendant switches; traffic billing operator terminals; ] switching software; residential, public, business and mobile/cordless telephone sets; headsets; telephone jacks; line connectors; [ video and text terminals; ] maintenance administrative terminals; copper cable; optical fiber cable; submarine cable; electrical protectors; connecting blocks; cable terminals; indoor and outdoor cross connect frames; patch panels; [ mechanical splices; cable strippers; couplers; attenuators; multiplexors; line concentrators; multiplex terminals; loop carriers; short to long haul inter-office transmission hardware; analog and digital radios; antenna; coders; channel banks; repeaters; repeater and span lines; network local test cabinets; network remote test units; network test operational support systems (comprising network loop reporting and test systems that are composed of computer hardware, host interface computer hardware, and operating software; a controller to provide operation system interface, manage access, test, and analyze network faults and to provide a local man-machine interface; software modules that provide end-to-end surveillance, control, and maintain digital transport networks from cable carriers to high-rate fibre systems; ] dynamically controlled routing systems comprising computer hardware and operating software that provide centralized, automated means to monitor and control inter-switch traffic to the network; [ computer software that manages a multi-vendor network of digital cross connects and multiplexors from a centralized, network-level position; and software that allows end-users to poll data directly from the central office switch, to detect phone abuse, and to allow time and expense tracking); digital announcers; billing media converters; paging and response systems comprising key services modules and hand free terminals; power plants comprising batteries, ] monitors, alarms, fuses, breakers, rectifiers, transformers and control panels; electrical power supplies; rectifiers; direct current to direct current converters; [ ringing machines; tone machines; ] telephone and transmission software; integrated circuits; semiconductors; transformers; diodes; resistors; capacitors; transistors; printed circuit boards; [ pre-recorded magnetic tapes providing telecommunication system and telephone applications; tape drives; and read only memory on compact disk providing telecommunication system and telephone applications; computer telecommunication software for recording, storing and delivering voice messages; automatic call distribution software; intelligent networks comprising signal transfer/switching point link software, and signal control point databases; optical sources and optical detectors ]