42 Research, design and development of electronic and optical communications instruments and components, namely, optical transceivers; research, design and development of telecommunications equipment, namely, fiber-optic transceivers, fiber optic repeaters, converters and optimizers, wave division multiplexers, free-space optics transmission systems, ethernet-over-VDSL access aggregators, terminators and repeaters, and remote presence management products, namely, switches, and console, alarm, sensor and power management devices; non-downloadable software as a services (SAAS) services featuring software for use in the management, operation, technical support, and quality assurance, of transceiver products employed in client optical networks