9 [ computers; communications systems, computer information storage and retrieval systems, ] telephone and telephone messaging systems, voice mail and voice messaging systems, [ electronic mail systems, ] automated attendant systems, [ interactive voice response systems, database access and processing systems, video and multimedia systems, and fax processing systems, ] all of the above systems being comprised of computers, computer circuit boards, modems, audio interface and conversion boards and circuits, digital signal processing boards, [ telephone and data network switches, ] communications boards, logic boards, network interface boards, telephone and data transmission interface boards and circuits, [ voice and video analysis and response processors, ] power supplies, user interface circuits, and computer software for use in voice mail and voice messaging, [ electronic mail, ] automated attendant, [ interactive voice response, word processing, fax processing, video and ] multimedia applications, and instructional manuals distributed therewith