Recorded computer programmes (programs); computers; computer peripheral devices; stored program controlled telephone switching apparatus; video telephones; portable telephones; modems; television apparatus; electric monitoring apparatus; microphones; network communication apparatus; data processing apparatus; TV cameras; cameras (photography); monitors (computer hardware); monitoring programs (computer programs); audio and video receivers; computer hardware used to enable the subscribers to proceed with video conference in different places simultaneously; recorded computer software used to enable the subscribers to proceed with video conference in different places simultaneously; network communication apparatus used to enable the subscribers to proceed with video conference in different places simultaneously; data processing apparatus for supporting, controlling, managing many video terminal subscribers to access to video conference systems simultaneously; recorded computer software used for digital video compression or decompression and acquisition and restoration of image data; data processing apparatus used for digital video compression or decompression and acquisition and restoration of image data; camcorders for video conference; network communication apparatus for supporting, controlling, managing many video terminal subscribers to access to video conference systems simultaneously; computer memories