Apparatus for recording, transmission or reproduction of sound or images; blank magnetic data carriers, blank recording discs ; blank digital recording media, namely, compact discs and DVDs; downloadable computer software for monitoring, controlling, steering, configurating, managing, measuring and programming and modifying active and passive network components for telecommunication purposes; recorded content, namely, audio and video tutorials; downloadable databases in the field of monitoring, controlling, steering, configurating, managing, measuring and programming and modifying active and passive network components for telecommunication purposes; downloadable media, namely, audio and video recordings featuring tutorials; downloadable computer gaming software; downloadable firmware for network apparatus and parts and accessory of network apparatus; downloadable computer software for operating computer operating systems; communications equipment, namely, network data processing apparatus; computer networking and data communications equipment, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; point-to-point communications equipment, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; broadcasting equipment, namely, apparatus for broadcasting of sound or images and audio-visual multimedia; antennas and aerials as communications apparatus; image scanners; electrical and mechanical data processing equipment and accessories, namely, data processors; calculators; computer peripheral devices; computers and computer hardware; computer components and parts, namely, computer peripheral devices; audio devices, namely, radios, and radio receivers, namely, RF radio receivers; display devices in the nature of video monitors, television receivers and film and video devices in the nature of cameras and webcams; image capturing and developing devices, namely, cameras and webcams; optical, coaxial, twinaxial, waveguide and twisted pair signaling cables for IT, AV and telecommunication; magnets, magnetizers and demagnetizers; scientific and laboratory devices for treatment using electricity, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; electrical and electronic components, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; electric cables and wires; electrical circuits and circuit boards; lasers not for medical use; safety, security, protection and signaling devices, namely, router and switches and optical transport equipment in the nature of signal processors for forwarding alarm messages to an alarm center; alarms and warning equipment, namely, router and switches and optical transport equipment in the nature of signal processors for forwarding alarm messages to an alarm center; signaling apparatus, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; protective and safety equipment, namely, router and switches and optical transport equipment in the nature of signal processors for forwarding alarm messages to an alarm center; navigation, guidance, tracking, targeting and map making devices, namely, GPS receivers and computers; measuring, detecting and monitoring instruments, indicators and controllers, namely, optical measuring systems, devices and instruments for monitoring of data and signals; monitoring instruments, namely, optical measuring systems, devices and instruments for monitoring of data and signals in the nature of data and signal processors; Optical sensors; testing and quality control devices, namely, optical sensors for testing network apparatus and communication equipment; measuring, counting, alignment and calibrating instruments, namely, optical sensors for network apparatus and communication equipment; controllers, namely, electrical and optical regulators for network apparatus and communication equipment; scientific research and laboratory apparatus, educational apparatus and simulators, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; testing apparatus not for medical purposes, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; armatures for use in electrical apparatus; electric junction boxes; connections for electric lines; audiovisual teaching apparatus, namely, webcams and computer whiteboards; electricity limiters; observation instruments, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; video telephones; chips being integrated circuits; magnetic encoders; computer peripheral devices for communication needs; data processing apparatus; digital signs; electrical adapters; cable channels in the nature of ducting for electric and network cables; contacts, electric; couplings, electric; apparatus for regulating electric current; conductors, electric; electrical ducts; electronic devices for measuring electric current; relays, electric; electric apparatus for commutation, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; monitoring apparatus, other than for medical purposes, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; resistances, electric; wires electric; cables, electric; masts for wireless aerials; printed circuit boards; printed circuits; computer operating programs, recorded; computer programs, recorded, for monitoring, controlling, steering, configurating, managing, measuring and programming and modifying active and passive network components for telecommunication purposes; computer software, recorded, for monitoring, controlling, steering, configurating, managing, measuring and programming and modifying active and passive network components for telecommunication purposes; semi-conductors; holders for electric coils; computer programs, downloadable, for monitoring, controlling, steering, configurating, managing, measuring and programming and modifying active and passive network components for telecommunication purposes; electronic publications, downloadable, namely, tutorials, datasheets, specification sheets, instructions, manuals, hand-outs, videos, presentation slides, books, magazines in the field of telecommunication; computer software applications, downloadable, for monitoring, controlling, steering, configurating, managing, measuring and programming and modifying active and passive network components for telecommunication purposes; high frequency apparatus, namely, switches, router and optical transport equipment in the nature of signal processors; integrated circuits; interfaces for computers; copper wire, insulated; identification threads for electric wires; identification sheaths for electric wires; electric wire connectors; sheaths for electric cables; electric switchboxes; electrical terminal boxes; coaxial cables; lasers, not for medical purposes; light-emitting diodes (LEDs), not for medical purposes; magnetic data media, namely, magnetic tape drives and blank hard drives for computers; magnetic tape units for computers; blank magnetic computer tapes; materials for electricity mains, namely, electric wires and cables; measuring instruments for data communication and telecommunication needs in the nature of optical sensors; modems; optical data media, namely, blank optical data carriers; fibre optic cables; optical fibers being light conducting filaments; optical condensers; optical lanterns; blank and recordable optical discs; mirrors being optical mirrors for telecommunication purposes; apparatus and instruments for physics, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals and vibration, acceleration, high frequency, electric and positioning meters and oscilloscope; electric control panels; commutators; switches, electric; electricity distribution consoles; telecommunication transmitting sets, namely, apparatus for transmitting sound or images and data; transmitters of electronic signals; telecommunications transmitters; plugs, sockets and other contacts, being electric connectors; covers for electric outlets; electric circuit closers; circuit breakers; telephone wires; telephone transmitters; telegraph wires; telephone receivers; audio- and video-receivers; sound transmitting apparatus; transponders; junction sleeves for electric cables; electric connectors; electric distribution boxes; panels for the distribution of electricity; apparatus for recording, transmitting and reproduction of data; devices, instruments and passive and active components for fiber optic technology, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; wavelength division multiplexer and demultiplexer; fiber amplifier, namely, passive and active telecommunication network electronic components; optical receiving diodes; optical frequency metrology devices; laboratory optical apparatus, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; computer hardware, namely, measuring, detecting and monitoring instruments, indicators and controller, for data communication and telecommunication needs; computer hardware, namely, digital telecommunication indicators; electro-optic transducers; electronic telecommunication control instruments, namely, electrical controlling devices; high frequency electrical transducers; wireless controllers for remote monitoring as well as function and status control of their electrical, electronic or mechanical devices or systems; optical sensors, namely, inspection apparatus and instruments for data communication and telecommunication needs; laser diodes; wireless electric and network switches; electrical frequency converters; electric power controllers; electric switchgears; apparatus and devices for the transmission of images; digital telecommunications equipment, namely, apparatus for the transmission of communications; wired communication devices, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; wireless communication devices, namely, switches, routers, satellite modems and high-frequency transceivers; wireless transmitters and receivers for data communication and telecommunication; electric apparatus for transmission communication; fiber optic telecommunication apparatus and devices, namely, passive and active telecommunication network components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; communication apparatus and devices for the wireless transmission of data, images or sound; network communication apparatus, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; telecommunications multiplexers; digital optical transmission apparatus, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; Electronic and optical communications instruments and components, namely, optical data links for data communication and telecommunication needs; fiber optic couplers; optical switches for data communication and telecommunication needs; optical and magneto-optical recording media, namely, blank optical and magneto-optical data carrier; information technology and audiovisual equipment and components for the provision, distribution and safeguarding of time, phase, frequency and clock information, in particular for the synchronization of communication and electricity networks, namely, equipment and components for synchronous optical networking and synchronous digital hierarchy and plesiochronous digital hierarchy; computer hardware for telecommunications; apparatus for the transmission of data, namely, for data communication and telecommunication needs; demultiplexers; metallic electric cables; radio wave transmitters; data communications apparatus, namely, apparatus for the transmission of data; data transmission cables; optical waveguides for telecommunication networks; multiplexers for data communication and telecommunication; optical transmitters for transmission of electronic and network signals; optical receivers; signal amplification apparatus and devices; network interface transceiver; fiber optic transceiver for use in networks; Telecommunications equipment, namely, fiber optic repeaters, converters and optimizers; free-space optics transmission systems especially transmitter and receiver for data communication and telecommunication in the nature of telecommunications equipment; optical directional radio systems comprised of fiber optics especially transmitter and receiver; switches, namely, ethernet switches and routers; fiber-to-the-home and ethernet-over-vdsl access aggregators, terminators and repeaters for data communication and telecommunication; Telecommunications equipment, namely, products for presence management, in particular remote presence management, namely, switches, and console, alarm, sensor and power management devices; consoles, namely, terminal devices for entering and displaying data, namely, computer terminals; alarm devices in the nature of sensors; Telecommunications equipment, namely, sensor and power management devices for data communication and telecommunication; apparatus and devices for treating and compensating optical dispersion, namely, dispersion compensators in the nature of optical fibers; optical multiplexers; optical translator, in particular electro-optical converters being optical converters; linecards, namely, electronic and network circuits; optical transponders; multiplex transponder being muxponders; ethernet service modules for ethernet switching and networking, namely, ethernet switches; dispersion compensation modules, namely, dispersion compensation modules for telecommunication networks especially for pulse compression and temporary shortening and lengthening of optical light pulses in the nature of integrated circuits; cwdm (coarse wavelength division multiplexing)-transmitter; dwdm (dense wavelength division multiplexing)-transmitter; optical network systems, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; optical network management and administration equipment, especially network communication apparatuses, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; optical transmission system, in particular transmitters and receivers of optical signals as well as parts and accessories therefor, namely, apparatus for the transmission of data; digital-to-analog converter; analogue to digital converters; transceivers; multiplexer amplifier; telecommunication apparatus, instruments, installations and networks and their parts and accessories, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; computer systems in the nature of computers and their parts and accessories in the nature of computer peripherals; computer networking hardware; local area network hardware; telecommunication installation cable; telecommunication jumper cables; electrical plugs for telecommunication cables; direct connection telecommunication cable; telecommunication electrical adapters and small signal splitters for electronic apparatus; pigtails for signal transmission being patch cable for telecommunication means; guide channels for cables being ducting for telecommunication cables; passive and active telecommunication network electronic components, namely, passive and active telecommunication network electronic components, namely, switches, routers, optical transport equipment, wave shapers, amplifiers, optical pumps, oscillators, dispersion compensators, optical channel monitor, optical switch, optical cross-connects, ROADMs, wavelength selective switches (WSS), multi cast switches (MCS), optical power meters (OPM), optical spectrum analyzers (OSA), splitters, digital signal processors (DSP) and application-specific integrated circuits (ASIC), field programmable gate array (FPGA), in particular for modulation methods PAM4, QPSK, PM-QPSK, QUAM, coherent detection and forward error correction and multiplexers, in particular CWDM and DWDM multiplexers and devices and apparatus for monitoring data and signals; transceivers for data communication and telecommunication needs; transmitters for data communication and telecommunication needs; receivers for data communication and telecommunication needs

Advertising services; business management; business administration; clerical services; advertising, marketing and promotional services; public relations services; product display services, namely, product demonstrations; loyalty, incentive and bonus program services, namely, providing incentive award programs through issuance and processing of loyalty points for purchase of a company's goods and services; provision of advertising space by electronic means and global information networks and rental of advertising time on communication media; distribution of advertising, marketing and promotional material; providing commercial trading in the nature of providing trade information and consumer information services in the field of recorded data, information technology, audiovisual, multimedia and photographic equipment, apparatus, instruments and cables for electricity, optical instruments and equipment, amplifiers and correctors, measuring, detection, monitoring and control equipment, telecommunications equipment, in particular active and passive network components, and network technology including parts and accessories; retail and wholesale store services related to recorded data, information technology, audiovisual, multimedia and photographic equipment, apparatus, instruments and cables for electricity, optical instruments and equipment, amplifiers and correctors, measuring, detection, monitoring and control equipment, telecommunications equipment, in particular active and passive network components, and network technology including parts and accessories

repair of audiovisual, multimedia and photographic equipment, apparatus, instruments and cables for electricity, optical instruments and equipment, amplifiers and correctors, measuring, detection, monitoring and control equipment, telecommunications equipment, in particular computer hardware in the nature of active and passive network components, and network technology and parts and accessories; installation services, cleaning, repair of audiovisual, multimedia and photographic equipment, apparatus, instruments and cables for electricity, optical instruments and equipment, amplifiers and correctors, measuring, detection, monitoring and control equipment, telecommunications equipment, in particular active and passive network components, and network technology and parts and accessories in the nature of computer hardware; computer hardware and telecommunications apparatus installation, maintenance and repair; installation, maintenance and repair of computer hardware; installation of hardware for computer networks; installation of hardware for computer systems; maintenance and repair of computer hardware