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Wireless communications systems, namely, digital modems, multiplexers, radio frequency units, antennas, and related operating software, all sold separately, or as a unit used together to interconnect stations in mobile networks or provide local access to telecommunications systems for voice, data or video services, and manuals sold as a unit; network computer systems consisting of computer terminals and computer software for use in diagnostic monitoring, maintenance and control of such wireless communications systems, and manuals sold as a unit

Installation, maintenance and repair services of digital modems, multiplexers, radio frequency units, antennas, network computer systems consisting of computer terminals, and hardware related to wireless communications systems

installation, maintenance and repair services of software related to wireless communications systems; design services for others in the field of wireless communications systems, consisting of both hardware and software