Data transmission cables; Telegraph wires; Coaxial cables; Microwave coaxial cables; Cables, electric; Fibre optic cables; Modems; Signal electric couplers; Signal transceivers; Signal electric converters; Carriers, namely, racks specially adapted for electric cable and coaxial cables; Carrying containers specially adapted for pulse optical code readers, namely, pulse code modulation sub module trays; Optical fiber signal receivers of electronic signals; Fiber signal transmitters of electroni...