scientific, nautical, electric, electronic, photographic, cinematographic, optical, signalling, checking and teaching apparatus and systems, namely, apparatus for monitoring, transmitting, computing, acquiring, storing, converting, compressing, processing, carrying, emitting, receiving, amplifying, and restoring data, image, or sound signals, namely, telegraphic, telephone, audioconfernece and videoconference apparatus; facsimile machines; television and radio transmitters and receivers; telephone sets; data processing terminals; videotex terminals; multiservice communication terminals used as personal computers, telephonic terminals, videotex terminals, audioconference terminals, videoconference terminals, facsimile terminals, television receivers, and local data processing terminals, comprising a terminals, louspeakers, a camera, and a videocommunication card; computer workstations comprising terminals connected with a local or remote data processing center; telecommunications and electric cables; data or image or sound recording and reproduction apparatus; microphones; coders; decoders; concentrators, multiplexers and demultiplexers; electric and electronic switches; data or telephone exchanges; communication interface units; transmission error detecting and correcting apparatus; transmission networks comprising transceivers, routers, monitoring and controlling units and switching units; local area networks comprising transceivers; routers, monitoring and controlling units and switching units; modulators; demodulators; signal adapters; microprocessors; computers; personal computers; computer peripherals; word or design processing machines; desks for control panels; keyboards; display screens; printers; data processing software, namely, text, image and graphic processing software, and voice processing, audioconference, videoconference and communication software; firmwares; data or image or sound recording carriers, namely, prerecorded audio, video, or computer tapes and discs for conferencing and messaging multimedia; blank magnetic or optical data media, namely, audio, video, or computer tapes and discs; camera

telecommunications services, namely, radio broadcasting, television broadcasting, cable television broadcasting; computer communications services, namely, transmission of messages by fax, E-mail, telegraph, telegram; radio and telephone paging services, audioconferencing services, videoconferencing services, data, image, or sound teledistribution services; rental of telephonic terminal, videotex terminal, audioconference terminal, videoconference terminal, videocommunication card, modulators and demodulators

computer programming; computer software design; rental and updating of computer software; engineering; rental of personal computers and computer peripheral devices