Fiber optic cables; Fiber optic connectors; Fiber optic instruments, namely, Optical Fiber Communication Instrumentation; Fiber optics; Fibre-optic cables; Fibre optic cables; Fibre optic couplings; Heat detection systems comprised of fiber optic linear loop configurations, heat detectors, monitors; Junction sleeves for fibre optics; Optical fiber cables; Optical fiber connectors; 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; 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