Cables for electrical and optical signal transmission systems; Cables for electrical or optical signal transmission; Cables for optical signal transmission; Electrical and optical cables; Electronic and optical communications instruments and components, namely, cable television transmitters; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic and optical communications instruments and components, namely, digital transmitters; Electronic and optical communications instruments and components, namely, optical data links; Electronic and optical communications instruments and components, namely, optical receivers; Electronic and optical communications instruments and components, namely, optical transceivers; Electronic and optical communications instruments and components, namely, optical transmitters; Fiber optic cables; Fiber optic instruments, namely, multiplexer, demultiplexer, add-drop filter; Fiber optic light and image conduits; Fiber optics; Fibre-optic cables; Filters for optical devices; 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; Multiplexers; Nonlinear optical fibres; Optical cables; Optical fiber cables; Optical fibers; Optical fibers sold as a component of fiber optical cables; Optical fibres; Optical fibres, telephone receivers, switchboards, telephone and telegraph wires, video telephones; Optical filters; Optical filters for screens; Optical lenses; Optical or telescopic lens sights; Optical reflectors; Telecommunications equipment and software, 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