9 video conferencing terminals used to establish visual, audio and data links between parties at different locations through the use of digital video compression and digital telephone lines; video monitors; video cameras; slide converters; white boards; speakers; microphones; personal computer based compression/decompression devices (codec) and hardware based compression/decompression devices (codec); video conferencing cabinets; computer operating programs; infrared keypads; graphics tablets; infrared pens with tablets; pointing devices, namely, pens with tablets and personal computer mice; video recorders and players; video document cameras; and document cameras