This book provides a comprehensive practical overview of the technology behind Internet Telephony, giving essential information to It professionals who need to understand the background and explore the issues involved in migrating the existing telephony infrastructure to an Ip based real time communication service. Assuming a working knowledge of Ip and Isdn networking, it addresses the technical aspects of real-time applications over Ip, with an in-depth coverage of voice and video applications and protocols. Drawing on their extensive research and practical development experience in VoIp from its earliest stages, the authors give you access to all the relevant standards and cutting-edge techniques in a single resource.
The author is an experienced professional working for CNET/FranceTelecom, where he has been one of the pioneers of the technology, and has been involved with one of the first commercial implementations of an IP Telephony. He also sits on the Voice over IP standards bodies.