9 Scientific, nautical, surveying, photographic, cinematographic, optical, weighing, measuring, signaling, checking apparatus and instruments, namely, intercom systems comprised primarily of a power supply, intercom main stations, intercom substations, relay boxes, plug boxes, headsets, handsets, loud speakers and rotary lights; intercom systems comprised primarily of a power supply, intercom main stations, intercom substations, relay boxes, plug boxes, headsets, handsets, loud speakers, rotary lights and radio network audio interface; intercom systems comprised primarily of a power supply, intercom main stations, intercom substations, relay boxes, plug boxes, headsets, handsets, loud speakers, rotary lights and telephone interface; intercom systems primarily comprised of an operator's unit, microphone and loudspeakers; intercom systems primarily comprised of an exchange unit, master stations and substations; intercom systems primarily comprised of an exchange unit, master stations, substations, hand sets and loudspeakers; radio transmitters; repeaters; amplifiers; battery-less telephone systems comprised primarily of terminals, headsets, digital gateways, session initiated protocol devices and plug boxes; sound signal systems comprised primarily of main panels, microphone stations and power supply; public address systems; television and radio apparatus, namely, speakers, alarm panels and entertainment systems primarily comprised of TV-AM-FM antenna, power supply, amplifier, connectors, cabinets, data processors and computers; antennas; video telephones; software for use in connection with communications systems, namely, software for communications licensing, communications service billing, communications system configuration and the maintenance monitoring of communication systems; intercommunication apparatus, namely, intercoms for use in ships, hospitals, buildings, factories, metros, transport, taxis and airports and by police, fire and ambulance services; telephone sets; radiotelephone sets; IP telephone sets and equipment, namely, screen, keyboard headsets; wireless telephone sets; telephone cables