Installation, maintenance, upgrade, and repair of communications systems; Specifically communications processors, interfaces, multiplexers, voice switches, local network switches, wide area network switches, voice mail systems, messaging systems, and telephone instruments; Installation, maintenance, and repair of associated computers and computer software; Installation, maintenance, upgrade, and repair of communications network infrastructure; Specifically copper cables, optical cables, cable terminations, and radio links; This infrastructure is used for telephone lines, structured wiring, and wireless network installations inside, outside, and between buildings

Design for others in the field of telecommunications; Specifically-- site surveys and inspections to evaluate whether a premises will support the installation and operation of communications systems or communications infrastructure; selecting, installing, and integrating communications systems with the associated computer hardware and software to meet the customer's communications and security requirements; updating telecommunications-related computer software and databases for others