Adam C. Rayler 
Videoconferencing [PDF ebook] 
Technology, Impact and Applications

A videoconference is a set of interactive telecommunication technologies which allow two or more locations to interact via two-way video and audio transmissions simultaneously. It has also been called 'visual collaboration’ and is a type of groupware. It differs from a videophone call in that it is designed to serve a conference rather than individuals. This book explores the technological advances that have extended the use of videoconferencing systems in a variety of areas; such as education, health and medicine, business, law, security and private use.