9 computer hardware and software for use in connection with the integrity and security of computer systems and networks; video, audio and related equipment in the area of telecommunications, namely analog codecs, T-1 and higher band width digital codecs twisted pair, coaxial, and fiber optic cable, analog and digital, and fiber optic transmitters, echo suppressors, PC-screen projectors, cameras, microphones, video cards, video monitors, electromechanical pens for use with computers, telewriter transmitters and receivers, multipoint video and audio conference bridges, and analog and digital voice, data, image, and video switches