Telecommunications equipment and software; namely, satellite communications systems comprising access, control and management software, satellite modems, channel units, forward error-correcting coder-decoders (CODECS), and complete earth stations containing RF radio and antenna; personal communications systems and microcellular systems comprising digital telephone handsets, base stations, and call processing software; voice and data modems; packet switches and circuit switches; multiplexers; software and related hardware for transmitting voice, facsimile, data, image, and video over local area networks and wide area networks; voice compression software and component parts therefore, and voice compression systems comprising multi-rate coder-decoders (CODECS) and echo cancelers based on digital signal processing; facsimile networks comprising stand alone facsimile machines and computer hardware and software for transmitting facsimile data by way of a distributed network, hardware capable of running a stored program by way of non-fax modems; network management systems comprising configuration data bases and alarm and control software; computer software for use in the transmission of voice, facsimile, data, image and video network communications equipment