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apparatus and instruments for radio, television, and electronic transmission and telecommunication; namely, copper cable and fiber optic cable and apparatus used to transmit and receive on copper cable and fiber optic network systems; central telephone exchanges; lightwave data links; namely, transmitters and receivers; modems; television sets, comprising digital and analog TV transmitters and receivers; interactive television units for acquisition of information from data bases; electronic fund transfer terminals; telecommunications switches and cross connect units; memory units, circuit boards and interface units; voice and data transmitting, carrying and receiving equipment; namely, telecommunication carriers, central office and remote terminals, channel banks, electronic plug-in modules and circuit boards; network multiplexers; data communication multiplexers and concentrators; pulse code modulation and signalling multiplexers and digital multiplexers; coder/decoders; namely, video and audio codecs; digital radio relay systems; comprising radio transmitters and receivers; power line and railroad transmission systems and equipment for transmitting information through power lines and railroad tracks; namely, transmitters, receivers, power line carriers, communication terminals, line traps, electrical coupling capacitors, multiplexers, private branch exchanges (PBX), telegram and telegraph units and line matching units; videotex terminals comprising keyboards, monitors and modems; and electronic emergency call units; computers, computer programs and computer peripherals for managing and controlling telecommunications networks, factories and buildings, power generating and distribution networks; computer graphics software; computer graphics products; namely, monitors, keyboards, processors, printers and display units; facsimile systems, comprising facsimile machines and parts therefor; telephones and telephone systems, comprised of handsets and console units, speakerphones, telephone dialers; telephone station message detail recorders; location independent personal communications systems; namely, mobile telecommunication and mobile radio equipment comprising telephones, transceivers, and radio transmitters and receivers and antennae; telephone installation apparatus; namely, phonemounts, outlet adaptors, telephone outlets, modular jacks, wire junctions and plug-in converters; housings for electronic and electrical equipment comprised of receivers and transmitter boxes for use in providing and managing energy supply requirements in the telecommunications industry