From the reviews: Computer Communications "Although the concept of ISDN has been with us now for over a decade, and much development work has been carried out du- ring this period, there are very few comprehensive books available on the subject. This is perhaps one of the best of them.The book aims to provide engineers and potential engi- neers with an overview of the requirements and features of ISDN that will be useful in thedesign, construction and operation of such systems. The author and his six collabora- tors have succeeded in this respect, producing a readable, yet thorough, technical book that can be recommended to a wider audience... Throughout the book the explanations are enhanced byclear, well-presented, relevant diagrams, and there is a very use- ful annex on the full set of standards relating to ISDN. This is a good book that will definitely be used as a refe- rence over the next few years by many engineers working in the area..." IEEE Computer "ISDN is a slimbut very effective book dealing with almost every aspect of the evolution ofpublic communications net- works...I highly recommend this book to engineerswho are new either to the field of ISDN or to specific ISDN topics. It is clear, concise, and is excellent padding for those tackling the CCITT recommendations."

viii • The second new chapter, Chapter 6, discusses video compression. The chapter opens with a general description of CRT operation and basic analog and digital video concepts. It continues with a general discussion of video compression, and it concludes with a description of MPEG-1 and H.261. • Audio compression is the topic of the third new chapter, Chapter 7. The first topic in this chapter is the properties of the human audible system and how they can be exploited to achieve lossy audio compression. A discussion of a few simple audio compression methods follows, and the chapter concludes with a description of the three audio layers of MPEG-1, including the very popular mp3 format. Other new material consists of the following: • Conditional image RLE (Section 1.4.2). • Scalar quantization (Section 1.6). • The QM coder used in JPEG, JPEG 2000, and JBIG is now included in Sec tion 2.16. • Context-tree weighting is discussed in Section 2.19. Its extension to lossless image compression is the topic of Section 4.24. • Section 3.4 discusses a sliding buffer method called repetition times. • The troublesome issue of patents is now also included (Section 3.25). • The relatively unknown Gray codes are discussed in Section 4.2.1, in connection with image compression. • Section 4.3 discusses intuitive methods for image compression, such as subs- pling and vector quantization.

"Khalid Sayood provides an extensive introduction to the theory underlying today's compression techniques with detailed instruction for their applications using several examples to explain the concepts. Encompassing the entire field of data compression Introduction to Data Compression, includes lossless and lossy compression, Huffman coding, arithmetic coding, dictionary techniques, context based compression, scalar and vector quantization. Khalid Sayood provides a working knowledge of data compression, giving the reader the tools to develop a complete and concise compression package upon completion of his book."--BOOK JACKET.

Engineers can turn to this official telecommunications and Internet dictionary for complete definitions of networking terms. Definitions, which will be updated as needed on the Web site Netcerts.com., are supplemented with illustrations and easy-to-understand examples and applications.

ASN.1 Complete teaches you everything you need to know about ASN.1-whether you're specifying a new protocol or implementing an existing one in a software or hardware development project. Inside, the author begins with an overview of ASN.1's most commonly encountered features, detailing and illustrating standard techniques for using them. He then goes on to apply the same practice-oriented approach to all of the notation's other features, providing you with an easy-to-navigate, truly comprehensive tutorial. The book also includes thorough documentation of both the Basic and the Packed Encoding Rules-indispensable coverage for anyone doing hand-encoding, and a valuable resource for anyone wanting a deeper understanding of how ASN.1 and ASN.1 tools work. The concluding section takes up the history of ASN.1, in terms of both the evolution of the notation itself and the role it has played in hundreds of protocols and thousands of applications developed since its inception. Features Covers all the features-common and not so common-available to you when writing a protocol specification using ASN.1. Teaches you to read, understand, and implement a specification written using ASN.1. Explains how ASN.1 tools work and how to use them. Contains hundreds of detailed examples, all verified using OSS's ASN.1 Tools package. Considers ASN.1 in relation to other protocol specification standards.