Computer software or embedded firmware for the following: recording telephone communications; intercom operation, including doorphone operation; telephone alert operation and telephone ringer operation; operating paging equipment; testing telephone equipment and communications network equipment; connecting headsets to telephones and computers; operating communication systems comprised of a speaker and microphone element (or speaker acting as a microphone) for enabling drive-through customer i...

Software for baseband signal processing; real-time embedded software for call protocol processing; software for design, simulation, analysis and performance evaluation of communication systems, communications hardware and software; and firmware, namely, computer data and control processors with embedded software all for use in the telecommunications industry