42206

Construction of Telecommunication Central Offices.

This group includes activities related to the construction, maintenance, and improvement of the construction of central telecommunication office buildings and their equipment, such as telephone central office buildings, telegraph buildings, transmitter tower buildings, microwave radar receiver buildings, small earth stations, and satellite stations. This also includes local and long-distance communication pipeline networks, transmission networks, and telecommunication/telephone cable distribution networks above ground, underground, and underwater.