Amplifiers; Electronic and optical communications instruments and components, namely, cable television transmitters; Ethernet repeaters; Ethernet switches; Optical couplers; Optical fiber cables; Telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, switches including Ethernet switches and routers, fiber-to-the-home and ethernet-over-VDSL access aggregators, terminat...