Overview

1411H-4 The insider's guide to IP-based telephony: development, network deployment, testing, and beyond Now that virtually every leading telecommunications service provider has committed to delivering IP-based telephony services, communications professionals face the enormous challenge of implementation. This hands-on guide brings together today's best-known answers and solutions for delivering Voice Over IP (VoIP) services with the quality customers demand. No other book covers the combined issues of protocol signaling, media transport methodology, reference topological considerations, and voice quality testing in service offerings. Bill Douskalis presents systematic coverage of every aspect of IP-based telephony: Coverage includes: * A realistic reference topology for implementing and benchmarking voice quality in IP telephony * Detailed explanations of call setup using each major competing technology * Signaling, bearer transport, and other key network elements * In-depth network and service performance analysis in both normal and impaired scenarios * State-of-the-art traces and performance measurements taken from actual IP networks No matter what your role in delivering VoIP services, IP Telephony delivers the specifics you need to speed deployment, improve reliability, ensure quality, and simplify troubleshooting. Precise, thorough, and based firmly in the real world, it is simply indispensable. The accompanying CD-ROM contains Hewlett-Packard Internet Advisor software that runs off-line - view live VoIP traffic examples! It also includes sample capture files of the H.323, MGCP, and SIP protocols; the latest IETF Working Group documents for VoIP; and an assortment of white papers and application notes that provide a real-world view of IP telephony.

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9780130141187

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Bill Douskalis has been designing, developing, deploying and troubleshooting network equipment and systems for over 20 years. He has worked extensively with a number of leading telecommunications companies, including AT&T Bell Laboratories' ACCULINK and Sprint's ION network.

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