BXB

Data processing apparatus; Computer peripherals; Radios; Intercommunication apparatus; Light communication apparatus; Network communication apparatus; Video telephones; Loudspeakers; Audio-receivers; Video-receivers; Megaphones; Microphones; Sound recording apparatus; Sound transmitting apparatus; Acoustic-couplers; Conference systems, namely, conference system main control units, table-top microphone units equipped with LCD, flush-mounted microphone units, graphical control software; Public address systems, namely, public-address control units, public-address system servers, public-address system intercom modules, remote decoders, professional servers with control software, speaker circuit zone selectors, audio source extend switchers, emergency broadcasting systems; Images systems, namely, images system cameras, images system camera controllers, images system image processors, conference image processors; Educational apparatus, namely, languages learning systems consisting primarily of graphical control software, student learning control units, headsets and MP3 players/recorders; Speakers; Amplifiers; Control units, namely, conference system sequence power control units, public-address system sequence power control units