carrying and receiving products for voice, data, and video transmission over fiber optics, namely, central office and optical network units, channel banks, electronic plug-ins, pair-gain apparatus, host digital terminals, and digital cross connect switchers for residential and business applications

carrying and receiving products for voice, data and video transmission over fiber optics, namely, telecommunications carrier facilities, central office and optical network units, channel banks, electronic plug-ins, pair-gain apparatus, operations support facilities and digital cross-connect facilities for residential and business applications

voice and data video transmission over fiber optics, carrying and receiving equipment; namely, central office terminals, optical network interfaces, channel banks, electronic plug-ins, pair-gain apparatus operations support systems comprising host digital terminals and optical network units