computer hardware, including computer hardware for transmitting and receiving facsimiles over global area networks; computer hardware for videoconferencing; computer hardware that allows stand-alone facsimile machines to communicate over and be addressed by local area networks and/or wide area networks; and computer hardware that allows stand-alone facsimile machines to communicate across the PBX to global area networks; telephony circuitry; telephony circuitry on PCMCIA cards; hardware circu...