Ethernet adapters; Ethernet cables; Ethernet controllers; Ethernet repeaters; Ethernet switches; Ethernet transceivers; Computer apparatus, namely, a converter that superimposes an Ethernet signal on an existing cable; Computer network switches; Computer network adapters, switches, routers and hubs; Computer network hubs, switches and routers; Electro-optic transducers; Free-space optics transmission systems, Ethernet switches and routers, and software sold both as components thereof and separately, namely, software adapted and arranged for operating, installing, testing, diagnosing and managing the forgoing telecommunication equipment; Telecommunication switches; 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, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices