Headsets and headphones for use with aircraft communications equipment, [ aviation communication stations, ] cellular telephones, contact center stations, [ compact disc players, communications networks, ] computers and computer game equipment, computer software for use in connecting and interfacing communications equipment with a computer and/or computer network, cordless telephones, [ DVD players, cassette tape players, compact disc players, ] MP3 players, gaming machines, mobile telephones, [ personal digital assistants, ] soft telephones, speakerphones, [ stereo receivers, ] telephones, [ telephone terminals, televisions, two-way radios, video telephones, video game cartridges, video teleconferencing telephones, audio teleconferencing telephones, visual data telephone terminals, input-output voice scanners for analog or digital voice transmissions; ] headset components for connecting headsets, headphones, [ and microphones ] to cellular telephones, computers, speakerphones, telephones, [ telephone terminals, two-way radios and video teleconferencing equipment telephones, ] adapters, amplifiers and cables to permit connections between telephone equipment and accessories and with computer and audio[ /video ] communications applications; audio technology and sound enhancement components, namely, software embedded in headsets, computers, telephones or adapters to improve sound quality and clarity; parts and attachments for headsets, headphones [ and speakers, ] namely, connection cables, ear buds, ear cushions, ear hooks, ear loops, [ ear pieces, microphones, audio receivers; ] electronic on-line indicators, namely, light emitting diodes on headsets; [ protective electrical circuit boards; telephone ]handsets; telephones; telephones [ that provide conferencing capabilities, namely, video conferencing and audio conferencing ]