GS0351: Retail and wholesale distributorship services for telecommunications and data networking equipment
GS0371: Installation, maintenance, and repair services for telecommunications and data networking equipment
GS0381: Communication services, namely, telephone, facsimile, and data and network transmission services; rental, hire and leasing of communications networks, systems, and equipment
GS0411: Training services, namely, seminars, workshops, and classes for telecommunications and data networking
GS0421: Scientific and technological research services and research and design relating to telecommunications; industrial research analysis and research services relating to telecommunications; design, engineering, and development services for computer hardware and software relating to telecommunications