scientific, electric, photographic, cinematographic, optical and teaching apparatus and instruments; data acquisition, storage, conversion, compression, processing and transmission apparatus; multimedia terminals; teleprocessing monitors; television monitors; emitting and/or receiving apparatus, and data, image and signal transmitters; telegraph, teleprinting, broadcasting, audioconference and videoconference apparatus; coders and decoders; concentrators, multiplexers, demultiplexers, modulators, demodulators, amplifiers, attenuators, mixers, detectors, couplers and converters for signals; satellites; aerials; electrical conductor and/or optical fiber cables; electronic components; integrated circuits; repeaters-regenerators; switches and automatic switching systems included in networks for telephone, data, audioconference and videoconference communications; integrated services digital networks; wired broadcasting networks particularly for television and data signals; local area networks; checking, working and maintenance devices and installations for exchanges systems and switches; telephone sets; data processing terminals; videotex terminals; visiophones; facsimile apparatus; radiophones; magnetic recorders; magnetic recording carriers; data, sound and/or image recording carriers; sound tapes, acoustic discs, compact discs and prerecorded videotapes and videodiscs; apparatus for recording, reproduction and transmission of sound and/or images; recorded computer programmes; computers; microprocessors; peripheral equipments for computers and microprocessors; control desks; keyboards; display screens; printers; image, sign or character memories and generators; image synthesizers; microphones; loudspeakers; cameras; audiovisual teaching apparatus

paper cards and tapes for the recordal of computer programmes; printed publications, magazines, newspapers and periodicals; books

repair and maintenance of electric, electronic, and data processing, telephonic and telecommunications apparatus and installations

radio communication, telegraph, telephone and videocommunication services; teleprinting, message sending, facsimile and telegram services; audioconferences; videoconferences; information, radio or television programmes broadcasting by any means; communications by computer terminals; computer aided transmission of messages and images; electronic mail; data, image and sound teledistribution services; radio paging services; information about telecommunications

consultancy in the field of computer programmes and electric, electronic, telephone and telecommunications installations and of data processing installations; engineering; technical research; computer and computer software rentals; elaboration and updating of softwares; computer programming