central office, local, toll, remote, centrex and gateway exchanges; private automatic branch exchanges; key telephone exchanges; data packet network exchanges; exchanges for frame relay and integrated voice and data; cellular mobile telephone exchanges; synchronized optical network access, transport and switching nodes; microwave radio and transmission systems comprising antennae, digital cross-connects, feeders, channel banks, multiplexers, modems, transceivers, satellite dishes, radio towers, transmitters, receivers, and software therefor; automated attendant interactive voice recognition and voice synthesis systems comprising computer hardware and operating software therefor; multi-media communication systems comprising telephones, adapters, video cameras, video boards, cables and operating software programs; network management systems comprising electronic hardware modules and related operating software programs which together permit the managing, monitoring, configuring and controlling of telecommunication networks; workstation comprising a custom database and visual display terminal that provides traffic billing features for toll calls, and directory assistance number referral services; man-machine interface (visual display) terminal and keyboard that provides the integrated maintenance and administration features need to troubleshoot technical problems and re-configure exchange parameters within a given telephone or data exchange; portable terminals and telephones, controlling processors that process and manage all voice and signalling information between the base radio transceivers and the existing telephone exchange, and base radio transceivers that allow portable telephones to make and receive calls; network operational support systems comprising computer hardware and software for monitoring telecommunications networks; and operating software for all of the preceding products; residential, public and business telephone sets; headsets, telephone plugs and jacks, line connectors; video and text [ terminarls ] * TERMINALS * ; copper [ cabel ] * CABLE * , optical fiber cable; electrical protectors, connectors, and terminals and frames, blocks and mounts for such devices; channel banks, repeaters, span lines; analog and digital announcers; billing media converters; paging and response systems comprising key service modules and handsfree terminals; power plants having batteries, monitors, alarms, fuses, breakers, rectifiers, transformers and control panels; integrated circuits and printed circuit boards; current converters, ringing machines, tone machines; storage tapes and disks and tape and disk drives; computer programs for designing circuit boards, electronic circuits and for information management; computer programs for maintaining office time records and performing fault and configuration management of exchanges; computer program for retrieving, viewing, handling and printing documents