9 Electronic and optical communications instruments and components, namely, cable television transmitters; Electronic and optical communications instruments and components, namely, communication link testers for testing communication links; Electronic and optical communications instruments and components, namely, digital transmitters; Electronic and optical communications instruments and components, namely, optical data links; Electronic and optical communications instruments and components, namely, optical receivers; Electronic and optical communications instruments and components, namely, optical transceivers; Electronic and optical communications instruments and components, namely, optical transmitters; Optical fibres, telephone receivers, switchboards, telephone and telegraph wires, video telephones