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 More computer ebooks Multimedia Internet Multimedia Communications Using SIP
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 The first part, “ Fundamentals, ” comprises the fi rst fi ve chapters in the book. These give the necessary background information on Internet multimedia architecture, protocols, and service creation tools for understanding the rest of the book. Above all, this fi rst part explains the rationale behind the design of the multimedia protocols and the remit in which they are used. Setting the scope of the technology is crucial for using it successfully.The second part, “ Core Protocols, ” is the central part of the book, and is dedicated to explaining how the main protocols work in concert to deliver multimedia services. In order to enhance the comprehension of the theory, the reader is also guided into the elaboration of simple Java-based programming practices that allow him or her to better comprehend the theoretical concepts. As part of these practices, readers will learn to build, step-by-step, a simple yet functional soft-phone supporting voice, video, and messaging. Those readers who are not interested in the programming practice can simply skip the related chapters and just focus on the theory. However, I would recommend that even these readers take a quick look at some of the code snippets so that they can get a high-level understanding of how applications can be developed. The third part, “ Advanced Topics, ” deals with the latest and most innovative usages of the technology. Readers who already have professional experience with the technology, either designing or developing solutions, might want to skip the fi rst two parts and dive directly into this part. In addition to tackling the most recent advances in the technology, Part III also shows how hot issues that every multimedia deployment faces are resolved. An example of that is the hot NAT traversal topic, of which a very thorough analysis is done and several possible solutions are detailed. Additionally, the last two chapters in the book explain how Internet multimedia technology can be used in network scenarios where a tighter relationship with the service provider exists. A paradigmatic example of this concept is the 3GPP IMS, to which a long chapter is exclusively dedicated. The approach used in this book to present the IMS architecture and concepts is very different from the traditional one used by other books on the subject. Instead of fi rst introducing an overwhelming architecture diagram full of unintelligible names and then explaining what the role is of the various components, a different approach is followed. It is based on leveraging the Internet concepts learned throughout the book, and explaining how they naturally evolve to support additional requirements that telecom operators may have, and that are not strictly relevant in a pure Internet environment. Download free ebooks of multimedia: Internet Multimedia Communications Using SIP
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