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Telecommunications equipment, and accessories for telephones, namely, telephone headsets and accessories therefor, namely ear cushions, ear tips, ear plates, microphone screens, speaker covers, sound filters, windscreens, neck straps, belt clips, headbands and headset cords; microphone sets; telephone sets; telephone ear hooks for headsets; telephone cords; telephone headset connectors; telephone on-line indicators; PBX-to-telephone interfaces; wireless telephone sets and wireless headsets for use with telephones; telephones; telephone headset amplifiers; telephone connectors bi-directional analog to digital signal processor; coupler for headset to computer ports; software and firmware for enhancement of digital audio signals; and parts for all of the aforesaid, namely, batteries, battery packs, power supply, mobile adapter, stereo plugs, headset stands, Y-adapters, clothing clips, lapel clips, and desk clips