Then, the points of communication increased in number, with a transmission that is no longer limited to data but including text images, and even voice and video. This book explains in clear and simple language the development of this technology, telecommunications management and many applications are now possible because of telecommunications. PART ONE associated with the picture of telecommunication technologies. Here you will learn the principles of initial transmission, how the data is done through networking, analog and digital signals, e-mail, Internet and various standards and compression techniques. PART TWO shows how technology is managed and maintained as part of the structure of Information Technology. This may be a client-server approach at the corporate level, or as part of regional infrastructure security. "Firewall" and encryption methods are described and acquisitions, planning and maintenance resources required for computers that are interconnected by telecommunications. PART THREE associated with the very latest applications for telecommunications: multimedia, message handling, teleworking, e-mail, Electronic Data Interchange, teleconferencing, video conferencing, home shopping, distance learning, electronic publishing, movie-on-demand, digital libraries; telemedicine, information services, etc. CyberCash This puts technology in context and describes the new services offered and the cultural changes in the telecommunications age. This is a very good beginners guide to telecommunications.