| | IP Telephony: Deploying VoIP Protocols and IMS Infrastructure
All you need to know about deploying VoIP protocols in one comprehensive and highly practical reference - Now updated with coverage on SIP and the IMS infrastructure
This book provides a comprehensive and practical overview of the technology behind Internet Telephony (IP), providing essential information to Network... | | The Camera (Ansel Adams Photography, Book 1)The Camera, together with The Negative and The Print, comprise The Ansel Adams Photography Series, a legendary triad of books about photographic technique that has become the most influential "how-to"series on photography ever written. The first edition of this series was completed in the 1950s. Adams completely revised and updated it... |