PRIORITY CALL SYSTEM

telephone switching, call processing and call completion units used to integrate public and private wired telephone networks with wireless technologies (including cellular telephones, pagers, private branch exchanges ("PBXs"), personal digital assistants, and fax messaging and voice messaging systems), and intended for use by persons and entities handling large volumes of telephone calls, voice messages and facsimiles; and computers, computer peripherals and computer programs and software, all for use in operating such units