Hardware, software, and bandwidth are all necessary to make this communication happen.
Video teleconferencing is an elegant solution to a number of intractable problems.
Perhaps the most obvious have to do with distance education. For public libraries, videoconferencing helps support lifelong learning for both staff and community. Looked at philosophically, it is yet another way to provide equity of access to information. That's all abstract. A Catholic couple in Northern Ireland bring together Protestants and Catholics in the neutral zone of cyberspace by enabling them to talk to each other via videoconferencing from the safety and privacy of their own living rooms.