IP Telephony, 2ed: Deploying VoIP Protocols and IMS Infrastructure  (English, Paperback, Olivier Hersent)

IP Telephony: Deploying VoIP Protocols and IMS Infrastructure, Revised Edition provides a comprehensive practical overview of the technology behind Internet Telephony, giving essential information to Network Engineers, Designers and Managers who need to understand the protocols 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 (Internet Protocol) and networking, it addresses the technical aspects of real-time applications over IP.