The Essential Guide to Telecommunications / Annabel Z. Dodd.
Material type: TextSeries: Essential guide series (Prentice-Hall, inc.)Publication details: Upper Saddle River, N.J. : Prentice Hall PTR, c2005.Edition: 4th edDescription: xxii, 594 p. : ill. ; 24 cmISBN:- 0131487256 (pbk.)
- 384 22
- TK5101 .D54 2005
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TK5101 .B327 2008 Modern electronic communication / | TK5101 .D54 2005 The Essential Guide to Telecommunications / | TK5101 .D54 2005 The Essential Guide to Telecommunications / | TK5101 .D54 2005 The Essential Guide to Telecommunications / | TK5101 .D54 2012 The essential guide to telecommunications / | TK5101 .F664 2016 Experiments and Activities Manual for principles of electronic communication systems / | TK5101 .H37 2000 Communication Systems / |
Previous ed.: 2002.
Includes bibliographical references (p. 551) and index.
Preface Acknowledgments About the Author I. FUNDAMENTALS AND VOICE OVER IP. 1. Basic Concepts. The Transition to Digital Analog Signals-Slower, More Prone to Errors Digital Signals Adding Meaning to Signals-Codes and Bits A Byte = A Character Baud Rate Versus Bits per Second-Electrical Signal Rates Versus Amount of Information Sent Codes-Adding Meaning to Bits Measuring Speed and Capacity Broadband Service-Multiple Data Streams Improving Utilization-Compression and Multiplexing Compression-Shrinking Data to Send More Information Multiplexing-Let's Share Interoperability-Protocols and Architectures Protocols-A Common Set of Rules Architectures-How Devices Fit Together in a Network Types of Networks-LANs, MANs, and WANs LANs-Local Area Networks LAN and WAN Devices-Higher Speeds, Lower Prices Home LANs-Sharing High-Speed Internet Access MANs-Metropolitan Area Networks ... Links Within Cities WANs-Wide Area Networks ... Links Between Cities Higher Speed Services for LAN Traffic Carrier and Internet Service Provider Networks Appendix 2. VoIP Systems, Circuit Switched PBXs and Cabling. Telephone Systems-Voice over IP, PBXs, and Centrex Systems What Is a Private Branch Exchange (PBX)? IP PBXs for the Enterprise Impetus for Change Architecture of IP-Based Systems ... How the Pieces Fit Together Voice Quality and Security Barriers to Acceptance of Voice over IP Endpoints-IP Telephones Connected to Layer 2 Switches PBX Trunks-Switch-to-Switch Connectivity Demarcation-The Location at Which Telcos Wire Trunks Circuit Switched PBXs-Proprietary Platforms Centrex-Telephone Company Supplied Service IP Centrex-Phone Companies Hosting Voice Over IP Direct Inward Dialing-Bypassing the Operator for Incoming Calls Key Systems-Multi-featured for Smaller Organizations Hybrid PBX/Key Systems Wireless Options for PBXs Advanced Applications for Telephone Systems Call Accounting-Billing Internal Departments Call Detail Recording for Carriers-Ge
Leading consultant Annabel Dodd presents easy-to-understand, insightful explanations of today's key trends and technologies: Industry Players and Trends, Broadband, VoIP, Wi-Fi and WiMax, 3G Mobile Networks, and Multimedia Networks. Previous editions have helped professionals worldwide understand the major changes transforming the telecommunications industry. In the past four years, the telecommunications industry has undergone major changes. This is the complete guide to the new realities of telecommunications. The new edition reflects all of today's most critical issues, trends, and technologies. In addition to providing crucial insights into the fast-changing competitive landscape, Dodd provides important information about the structure of, and key players in, the industry.
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