Optical distribution fields, including fiber optical cables, namely, optical distribution frames and fiber optical cables; joint closures for fiber optical cables and optical distribution fields, namely, fiber optic couplings in termination boxes and optical distribution frames; connectors in the nature of fiber optic connectors; optical cables; fiber optic signal cables for IT and telecommunication; micro optical cables, nano optical cables, connection cables; cables for installation in duct system, namely, telecommunication cables; hybrid cables, namely, hybrid fiber optic and DC power telecommunication cables; cables for transmission of data; cables for optical signal transmission; patch cords, namely, fiber optical extension cords; electrical fiber access terminal boxes; metal cabinets specially adapted to protect telecommunications equipment in the nature of fiber optic cables, namely, fiber splicing and DC power termination cabinets; junction boxes in the nature of fiber splicing boxes; electrical termination boxes in the nature of fiber and DC power termination boxes; communication hubs in the nature of fiber distribution hubs; fiber optics; fiber optics, namely, fiber optical adapters; fiber optical cables; fiber optical couplings; coupling sleeves for fiber optic cables; electrical connector housings for fiber optical cables; fiber optical control panels; junction boxes for housing of cable joints