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 radio systems composed of transmitters, receivers, repeaters, digital processors, and operating software; transmission systems composed of multiplexers, digital loop carriers, digital cross connectors, fibre feeders, copper feeders, radio transmitters, and operating software for said transmission systems; automated attendant switches; computer workstations featuring a customer account database recorded in computer memory that provide traffic billing, call completion, and assistance features; switching software for routing, balancing and establishing telephone and data calls; residential, public, business, and mobile/cordless telephone sets; headsets; telephone jacks; line connectors; video and text terminals; computer workstations featuring an electronic telephone switch database recorded in computer memory that provide integrated maintenance and administration features for telecommunication switching systems; copper electrical cable; optical fiber cable; submarine electrical cable; electrical surge protectors; connectors used to connect or terminate telephone wires to central office, key system, or PBX switching systems; cable terminals to provide protective and inter-connection terminals for feeder cables; mechanical cable splicers to splice cables; attenuators; multiplexers; line concentrators; multiplex terminals both digital and fibre which allow a number of voice or other channels to be transmitted over a single set of wires; analog and digital radios; antenna; coder-decoders ("CODECS") to convert voice signals from analog form to digital signals acceptable to PBXs and other transmission systems and then covert the data back to analog; microwave network repeaters; repeater and span lines; network local test units to test local loops, central office subscriber line equipment, etc. from a control point, usually a network node or central office; network remote test units to test loops, office subscriber line equipment, etc. from a remote location; digital announcers for delivering repetitive voice messages to end-users; billing media converters; power systems containing batteries, monitors, alarms, fuses, breakers, rectifiers, transformers, and control panels; electrical power supplies; rectifiers; direct current to direct current converters; ringing and tone machines that provide ring tones; telephone operating software; integrated circuits; semiconductors; electric transformers; diodes; electric resistors; capacitors; transistors; printed circuit boards; blank and prerecorded magnetic tapes for use in connection with operating and applications software for datafilling telephone switches; tape drives; read only memory on compact disk, both blank and prerecorded for use in connection with operating and applications software for datafilling telephone switches; computer telecommunication software for recording, storing, and delivering voice messages; automatic call distribution software; advanced intelligent networks comprising signal control points, signal switching points and signal transfer points; optical sources comprising lasers, light emitting diodes, semiconductor chips, optical receivers, and amplifiers; and optical detectors