Designed to help readers understand all aspects of videoconferencing, this guide touches on hardware and software, selecting and accessing videoconferencing networks, developing a request for proposals, and operational and business considerations for videoconferencing. New to this edition are expanded coverage of standards and a security section.

Voice over Internet Protocol (VoIP) is revolutionizing the way people communicate - both in the corporate world and in personal life. The enormous success of VoIP has led to its adoption in a wide range of networking technologies. Each network technology has its unique features and poses distinct challenges to the performance of VoIP.

VoIP: Wireless, P2P and New Enterprise Voice over IP describes the issues arising in the deployment of VoIP in an emerging heterogeneous network environment. Along with a brief overview of the concepts, protocols, algorithms, and equipment involved in realizing VoIP, this book focuses on two areas; quality and performance issues in deploying VoIP, this book focuses on two areas: quality and performance issues in deploying VoIP over various network settings, and the new mechanisms and protocols in these emerging networks to assist the deployment of VoIP.

This book is an invaluable resource for professional network engineers, designers, managers, researchers, decision makers and project managers overseeing VoIP implementations. Market analysts, consultants, and those studying advanced undergraduate and graduate courses on data, voice and multimedia communications will also find this book insightful.

VoIP; Wireless, P2P and New Enterprise Voice over IP: Discusses the basics of VoIP, VoIP codecs and VoIP protocols including SIP and H.323. Details new technologies such as P2P technology, VoWiFi, WiMax, and 3G networks. Explains the QoS issues arising from deploying VoIP using the new technologies. Solves the performance issues that emerge when VoIP is deployed over different network technologies.

Many wireless systems like GSM, GPRS, UMTS, Bluetooth, WLAN or WiMAX offer possibilities to keep people connected while on the move. In this flood of technology and claims that one single resource will serve all our needs, this book seeks to enable readers to examine and understand each technology, and how to utilise several different systems for the best results.

"Communication Systems for the Mobile Information Society" not only contains a technical description of the different wireless systems available today, but also explains the thoughts that are behind the different mechanisms and implementations; not only the 'how' but also the 'why' is in focus. Thus the advantages and also limitations of each technology become apparent.

Provides readers with a solid introduction to major global wireless standards and compares the different wireless technologies and their applications

Describes the different systems based on the standards, their practical implementation and why they were designed the way they are

The performance and capacity of each system in practice is analyzed and explained, accompanied with practical tips on how to discover the functionality of different networks by the readers themselves

Questions at the end of each chapter and answers on the accompanying website make this book ideal for self study or as course material

Illustrated with many realistic examples of how mobile people can stay in touch with other people, the Internet and their corporate intranet

This book is an essential resource for telecommunication engineers, professionals and computer science and electrical engineering students who want to get a thorough end-to-end understandingof the different technical concepts of the systems on the market today.

Combining information on the most important and related technologies in the mobile communications field, this two book package gives the engineer a concise, complete and authoritative introduction to LTE and SAE and The Evolved Packet Core. Written by experts who played a leading role in the development of the standards, this package gives insight into the 'how' and 'why', enabling the professional engineer to implement the technologies that are central to the mobile broadband revolution. Includes details of the standards and technologies with 160 new pages: LTE radio interface architecture, LTE physical layer and LTE access procedures Contains three brand new chapters on LTE: Transmission Procedures, Flexible Bandwidth and LTE Evolution, plus expanded details on the physical layer (total LTE content is 270 pages) Examines the latest developments in the evolution of LTE into IMT-Advanced, the next stage of 3G Evolution Gives clear explanations of the role of OFDM and MIMO technologies in HSPA and LTE Outlines the System Architecture Evolution (SAE) supporting LTE and HSPA evolution Up-to-date coverage of SAE including the latest standards development Easily accessible overview of the architecture and concepts defined by SAE Thorough description of the Evolved Packet Core for LTE, fixed and other wireless accesses Comprehensive explanation of SAE key concepts, security and Quality-of-Service Covers potential service and operator scenarios including interworking with existing 3GPP and 3GPP2 systems Detailed walkthrough of network entities, protocols and procedures Written by established experts in the SAE standardization process, all of whom have extensive experience and understanding of its goals, history and vision

Advances in Delay-Tolerant Networks: Architecture and Enhanced Performance, Second Edition provides an important overview of delay-tolerant networks (DTNs) for researchers in electronics, computer engineering, telecommunications and networking for those in academia and R&D in industrial sectors. Part I reviews the technology involved and the prospects for improving performance, including different types of DTN and their applications, such as satellite and deep-space communications and vehicular communications. Part II focuses on how the technology can be further improved, addressing topics, such as data bundling, opportunistic routing, reliable data streaming, and the potential for rapid selection and dissemination of urgent messages. Opportunistic, delay-tolerant networks address the problem of intermittent connectivity in a network where there are long delays between sending and receiving messages, or there are periods of disconnection.

Put your phone system on your computer network and see the savings. See how to get started with VoIP, how it works, and why it saves you money VoIP is techspeak for "voice over Internet protocol," but it could spell "saving big bucks" for your business! Here's where to get the scoop in plain English. Find out how VoIP can save you money, how voice communication travels online, and how to choose the best way to integrate your phone system with your network at home or at the office. Using this work: discover how to Use VoIP for your business or home phone service, choose the best network type, set up VoIP on a wireless network, understand transports and services, and demonstrate VoIP's advantages to management.

Your company can save tons of money by taking advantage of Asterisk, an open-source PBX that allows you to bridge data and voice communications. Asterisk for Dummies saves you all the worries and confusion with its easy-to-use, step-by-step walkthrough of the entire program that will have you set up in no time! Asterisk takes the data side of telecom and applies it to the handling and processing of voice calls. This book will show you everything you need to know to install, program, and grow with Asterisk. The invaluable information covered in this guide shows you how to: * Utilize dialplan, add features, and build infrastructure * Maintain your telecom service * Address call-quality concerns and completion issues * Provide long-term health for your Asterisk switch * Operate the AsteriskNOW GUI * Utilize VoIP codecs * Troubleshoot VoIP calls with packet captures * Avoid the things you should never do with Asterisk In addition to these essential tools, this trusty guide shows you how to manipulate your Asterisk and make it even more useful, such as fending off telemarketers, creating a voice mailbox that e-mails everyone, and transmitting your voice through your stereo. It also has quick references that no Asterisk operator should be without, like dialplan functions, VoIP basics, and a concise guide to Linux. With Asterisk for Dummies, you'll have the power to handle all the necessary programming to set up the system and keep it running smoothly.

On March 7, 1876, the U.S. Patent Office issued to a young inventor named Alexander Graham Bell what is arguably the most valuable patent ever: entitled "improvements in telegraphy," in truth it secured for Bell the basic principles involved in a telephone. On the same day that Bell filed his patent application, a caveat (a preliminary patent document) was filed by Elisha Gray. This coincidence sparked the first of many debates over whether Bell was the true inventor of the telephone. In the early 1860s Johann Phillipp Reis developed a version of the instrument, but his claims against Bell were hampered by the bungling of his lawyers in demonstrating his instrument in court. This work is a first look at the many men who developed the telephone and an examination of their claims against Bell's patent. A lay description of the phone is also provided, as well as a history of the development of the telephone system.

*Covers the latest standards and those being developed in an ever-evolving field
*Provides insight into the latest technology of video and data over wireless networks and how convergence will be a driving force in this industry
*Provides an understanding of the true capabilities behind each vendor's solution to allow for informed buying decisions
A recent survey of 500 U.S. companies with multiple locations found that 81% are planning to implement IP Telephony on their local area networks (LANs) in 2003, and two-thirds are looking at convergence for their wide area networks (WANs) as well. This includes voice, video and data over hard line and wireless networks.
Today, new standards and technologies are being developed to support convergence and voice over IP (VoIP) and Video over IP and wireless. Because convergence covers the voice and data world, it will be critical to understand all of these environments.
This book provides detailed information on convergence network models, protocol stacks, routing algorithms, gateways and switches required to support these networks.
*Covers the latest standards and those being developed in an ever-evolving field
*Provides insight into the latest technology of video and data over wireless networks and how convergence will be a driving force in this industry
*Provides an understanding of the true capabilities behind each vendor's solution to allow for informed buying decisions

This completely revised and updated edition of the highly successful "UMTS Signaling" provides a deep insight into all aspects of UMTS signalling. The chapter structure has been reworked for improved "usability" for readers, as well as including many new features and updates.

The successful trial, deployment, operation and troubleshooting of 3G or UMTS infrastructures and applications is the biggest challenge facing today's mobile communications. Network element instability, network element and multi-vendor interoperability, configuration and network planning faults are just a few of the challenges affecting performance and profitability that need to be addressed. This book is an invaluable guide to resolving such problems.

Highlights of the Second Edition: Includes new information and scenarios on HSPA / HSDPA / HSUPA, and IMS Covers not only WCDMA, but also TD-SCDMA issues Contains up-to-date information on releases 5 and 6, and includes a new chapter on the future releases 7 and 8 Provides crucial information for network operators and equipment suppliers keen to understand how to handle and analyse UMTS signaling procedures in order to get the network into operation, detect errors and troubleshoot faults Uses first hand, real world information to explain issues which are unclear in the standards Includes comprehensive descriptions and documentation of UMTS reference scenarios for different UMTS procedures

The unified comprehensive approach taken by the authors makes this book essential reading for engineers in network operators, integrators or system suppliers who need to be at the cutting edge of this technology. It will also be an invaluable resource for postgraduateson telecommunications courses, especially those with a focus on signal analysis.

Recent years have witnessed an explosion of new operators and customers of cellular mobile communications and the importance of wireless/mobile communications in today's telecommunications industry is indisputable.
The Final Report of COST 259, 'Wireless Flexible Personalised Communications' is the result of extensive work, performed by more than 200 European researchers from more than 90 institutions (universities and companies) in the area of mobile radio.

• Provides a discussion on the evolution of wireless/mobile communications focusing on the use of data and multimedia, and consequently broadband communications
• Examines the radio systems aspects of future wireless communication systems, concentrating primarily on physical layer issues and including assessments of OFDM and CDMA
• Presents radio propagation and adaptive antennas, and provides a thorough understanding of the mobile radio channel
• Discusses the radio network aspects for the improvement and optimisation of the existing 2G systems and the planning of UMTS/IMT2000
• Explains the design and implementation of UMTS and new techniques for future wireless broadband communication systems

Fixed wireless access networks and Wireless Local Loop (WLL) technology are effective and efficient means for rapidly creating new access to telecommunications networks and services which are short of capacity and incapable of handling the bitrates expected by today's high speed multimedia, Internet, video and voice services.

Wireless Access Networks is a complete reference for all involved in fixed wireless access and wireless local loop, including business strategists, marketing, technical, planning and operations staff of public network operators, as well as students.

Well-illustrated and simple-to-read, topics covered include:

• Economics of fixed wireless networks - why and when they are attractive
• Technical and operational planning, practicality and maintenance
• Design of radio systems and their basic functionality
• Point-to-point (PTP) and point-to-multipoint (PMP) radio
• Calculation of radio system range and reliability
• Fixed wireless applications and their network integration

Translates technical jargon into practical business communications solutions

This book takes readers from traditional voice, fax, video, and data services delivered via separate platforms to a single, unified platform delivering all of these services seamlessly via the Internet. With its clear, jargon-free explanations, the author enables all readers to better understand and assess the growing number of voice over Internet protocol (VoIP) and unified communications (UC) products and services that are available for businesses.

VoIP and Unified Communications is based on the author's careful review and synthesis of more than 7,000 pages of published standards as well as a broad range of datasheets, websites, white papers, and webinars. It begins with an introduction to IP technology and then covers such topics as:

Packet transmission and switching

VoIP signaling and call processing

How VoIP and UC are defining the future

Interconnections with global services

Network management for VoIP and UC

This book features a complete chapter dedicated to cost analyses and payback calculations, enabling readers to accurately determine the short- and long-term financial impact of migrating to various VoIP and UC products and services. There's also a chapter detailing major IP systems hardware and software. Throughout the book, diagrams illustrate how various VoIP and UC components and systems work. In addition, the author highlights potential problems and threats to UC services, steering readers away from common pitfalls.

Concise and to the point, this text enables readers--from novices to experienced engineers and technical managers--to understand how VoIP and UC really work so that everyone can confidently deal with network engineers, data center gurus, and top management.

A complete and systematic treatment of signal processing for VoIP voice and fax This book presents a consolidated view and basic approach to signal processing for VoIP voice and fax solutions. It provides readers with complete coverage of the topic, from how things work in voice and fax modules, to signal processing aspects, implementation, and testing. Beginning with an overview of VoIP infrastructure, interfaces, and signals, the book systematically covers: Voice compression Packet loss concealment techniques DTMF detection, generation, and rejection Wideband voice modules operation VoIP Voice-Network bit rate calculations VoIP voice testing Fax over IP and modem over IP Country deviations of PSTN mapped to VoIP VoIP on different processors and architectures Generic VAD-CNG for waveform codecs Echo cancellation Caller ID features in VoIP Packetization-RTP, RTCP, and jitter buffer Clock sources for VoIP applications Fax operation on PSTN, modulations, and fax messages Fax over IP payload formats and bit rate calculations Voice packets jitter with large data packets VoIP voice quality Over 100 questions and answers on voice and more than seventy questions and answers on fax are provided at the back of the book to reinforce the topics covered throughout the text. Additionally, several clarification, interpretation, and discussion sections are included in selected chapters to aide in readers' comprehension. VoIP Voice and Fax Signal Processing is an indispensable resource for professional electrical engineers, voice and fax solution developers, product and deployment support teams, quality assurance and test engineers, and computer engineers. It also serves as a valuable textbook for graduate-level students in electrical engineering and computer engineering courses.

Foreword from Arogyaswami Paulraj, Professor (Emeritus), Stanford University (USA)

Throughout its history, Understanding Telephone Electronics has been, by far, one of the most popular books on telecommunication electronics in the trade, electronic distribution, and educational markets because of its very simple, direct approach to the technology. In keeping with the distinguished tradition of its predecessors, Understanding Telephone Electronics, Fourth Edition covers conventional telephone fundamentals, including both analog and modern digital communication techniques, and provides basic information on the functions of each telephone system component, how electronic circuits generate dial tones, and how the latest digital transmission techniques work.
This new edition of Stephen Bigelow's well-known, widely used text on telephone electronics offers comprehensive coverage of the latest developments in fiber optic technology, the convergence of telecommunications, cable-TV and Internet services, and CTI (computer telephony integration). The authors have made extensive revisions in these and other essential areas, such as business systems, voice mail, phone networking, enhanced services, satellite communications, wireless paging systems, digital communications, and much more to ensure that topics covered are current with the most recent advances in technology. The original Understanding Telephone Electronics has been a "gold standard" reference and training staple for years. Likewise, Understanding Telephone Electronics, Fourth Edition will serve as an essential and invaluable resource for technicians, engineers, students at major universities and corporations, and anyone with an enthusiasm for telecommunication electronics.
Provides comprehensive coverage of telephone system functions and the role of the Internet in telephony
Updates encompass the trends and advances of the booming telecommunications field, with new chapters on fiber optic technology and the Internet

The End of the CBC? is about three overlapping crises: the crisis that has enveloped the CBC, the crisis of news, and the crisis of democracy. The emergence of platforms such as Google, Facebook, Twitter, and Netflix, the hyper-targeting of individual users through data analytics, the development of narrow online identity communities, and the rise of an attention economy have changed the media landscape in dramatic ways. Describing the failure of successive governments to address problems faced by the public broadcaster, this book explains how the CBC lost its place in sports, drama, and entertainment. Taras and Waddell propose a way forward for the CBC - one in which the corporation concentrates its resources on news and current affairs and re-establishes a reputation for depth and quality.

In 1999-2000, VoIP (Voice-over-IP) telephony was one of the most successful buzzwords of the telecom bubble era. However, in 2001-2003, VoIP faced a very tough reality check. Now, manufacturers and service providers are drawing on what they have learnt from past experience in order to prepare to participate in the next major challenge faced by the telecommunications industry.

This book offers a comprehensive overview of the issues to solve in order to deploy global revenue-generating effective "multimedia" services. Drawing on extensive research and practical deployment experience in VoIP, the authors provide essential advice for those seeking to design and implement a post-bubble VoIP network.

"Beyond VoIP Protocols: Understanding Voice Technology and Networking Techniques for IP Telephony" Introduces the basics of speech coding and voice quality Demonstrates how quality of service may be built into the network and deals with dimensioning aspects, e.g. multipoint communications and how to model call seizures. Explores the potential of multicast to turn an IP backbone into an optimized broadcast medium Includes amply illustrated, state-of-the-art practical advice for formulating a complete deployment strategy A companion volume to "IP Telephony: Deploying VoIP Protocols," this book takes the reader a stage deeper into how to prepare the network and exploit VoIP technology to its full potential.

From the reviews of the Second Edition … "The book stresses how systems operate and the rationale behind their design, rather than presenting rigorous analytical formulations … [It provides] the practicality and breadth essential to mastering the concepts of modern communications systems." —Telecommunication Journal In this expanded new edition of his bestselling book, telephony expert John Bellamy continues to provide telecommunications engineers with practical, comprehensive coverage of all aspects of digital telephone systems, while addressing the rapid changes the field has seen in recent years. Bellamy discusses the near-complete conversion to digital technology in telephone networks worldwide, examines both existing and emerging technologies, and explores the intricacies of carrying voice over data networks as well as the use of telephone networks for carrying data for Internet access. He emphasizes system design, implementation, and application, but also correlates the practice to communications theory. With 30 percent new material, Digital Telephony, Third Edition features:

• Clear explanations on how to overcome problems associated with the replacement of old analog technology with new digital technology
• A new chapter on digital mobile telephone technology
• New material on how, data networks support voice communication
• A new chapter on digital subscriber access technologies
• More than 300 graphs illustrating concepts
• Examples from the U.S. network as well as ITU public telephone networks

"This is an IEEE classic reissue of the book published by John Wiley & Sons in 1974. This definitive text and reference covers all aspects of microwave mobile systems design. Encompassing ten years of advanced research in the field, it reviews basic microwave theory, explains how cellular systems work and presents useful techniques for effective systems development. Key features include: complete coverage of microwave propagation techniques to design successful cellular systems, extensive chapters covering the broad fundamentals of microwave usage in mobile radio propagation and the functions of mobile radio antennas, comprehensive treatment of modulation methods, interference, noise, layout and control of high-capacity systems, and more! The return of this classic volume should be welcomed by all those seeking an authoritative and complete source of information on this emerging technology."

GSM (Global System for Mobile communication) provides a service to more than 500 million users throughout 168 countries worldwide. It is the world market leader serving 69 % of all mobile digital users and is currently evolving into UMTS (Universal Mobile Telecommunication System).

By describing the critical decisions and the phases of the development this key text explains how the GSM initiative became a success in Europe and how it evolved to the global mobile communication system. Initially the strategy and technical specifications were agreed for Europe and the subsequent evolution to a global solution was achieved by incorporating all non-European requirements and by inviting all committed parties worldwide to participate. The process started in 1982 and the first GSM networks went into commercial service in 1992. The first UMTS networks are expected in 2002 and the fourth generation discussions have begun.

• Presents a complete technical history of the development of GSM and the early evolution to UMTS

• Clarifies the creation of the initial GSM second generation system in CEPT GSM, the evolution to a generation 2.5 system in ETSI SMG and the evolution to the Third Generation (UMTS) in ETSI SMG and 3GPP

• Covers all of the services and system features together with the working methods and organisational aspects

The accompanying CD-ROM provides nearly 500 reference documents including reports of all standardisation plenary meetings, strategy documents, key decisions, the GSM Memorandum of Understanding and the report of the UMTS Task Force.

"A comprehensive guide for operators, engineers, technicians, marketing staff, and systems managers, explaining the intricacies of designing, installing, and operating a cellular network. Although the volume explains both the theory and practice of cellular systems, it is structured in such a way that nontechnical readers can bypass mathematically oriented sections without losing overall comprehension."–Book News, Inc.

This Fourth Edition of Neil Boucher’s internationally bestselling handbook has been thoroughly updated and expanded to provide comprehensive coverage of the new technologies that are shaping the industry, as well as the important changes brought about by the rapid domination of the cellular markets by digital systems. Encyclopedic in scope, it covers the design, installation, and operations of a cellular network, features concise discussions of best engineering practices, and provides helpful guidelines on critical business issues involved in planning, budgeting, and administering a cellular system.

Authoritative, comprehensive, and up-to-date, The Cellular Radio Handbook, Fourth Edition is an indispensable working resource for telecom designers, operators, and marketers. In addition to covering traditional cellular networks, this book also includes PCS/PCN, WLL, and satellite mobile technology.

We live in a world where social interaction is increasingly mediated by technological devices. In this book, Ian Hutchby explores the impact these technologies have on our attempts to communicate. Focusing on four examples - telephones, computerized expert systems at work, speech-based systems dealing with enquiries from the public, and multi-user spaces on the Internet - Hutchby asks: are we increasingly technologized conversationalists, or is technology increasingly conversationalized?

"Conversation and Technology" draws on recent theory and empirical research in conversation analysis, ethnomethodology and the social construction of technology. In novel contributions to each of these areas, Hutchby argues that the ways in which we interact can be profoundly shaped by technological media, while at the same time we ourselves are shapers of both the cultural and interactional properties of these technologies.

The book begins by examining a variety of theoretical perspectives on this issue. Hutchby offers a critical appraisal of recent sociological thinking, which has tended to over-estimate society's influence on technological development. Instead he calls for a new appreciation of the relationship between human communication and technology. Using a range of case studies to illustrate his argument, Hutchby explores the multiplicity of ways in which technology affects our ordinary conversational practices.

Readers in areas as diverse as sociology, communication studies, psychology, computer science and management studies will find much of interest in this account of the human and communicative properties of various forms of modern communication technology.

Introduces digital mobile communications with an emphasis on digital transmission methods This book presents mathematical analyses of signals, mobile radio channels, and digital modulation methods. The new edition covers the evolution of wireless communications technologies and systems. The major new topics are OFDM (orthogonal frequency domain multiplexing), MIMO (multi-input multi-output) systems, frequency-domain equalization, the turbo codes, LDPC (low density parity check code), ACELP (algebraic code excited linear predictive) voice coding, dynamic scheduling for wireless packet data transmission and nonlinearity compensating digital pre-distorter amplifiers. The new systems using the above mentioned technologies include the second generation evolution systems, the third generation systems with their evolution systems, LTE and LTE-advanced systems, and advanced wireless local area network systems. The second edition of Digital Mobile Communication : Presents basic concepts and applications to a variety of mobile communication systems Discusses current applications of modern digital mobile communication systems Covers the evolution of wireless communications technologies and systems in conjunction with their background The second edition of Digital Mobile Communication is an important textbook for university students, researchers, and engineers involved in wireless communications.

Voice over Internet Protocol (VoIP) is gaining a lot of attention these days, as more companies and individuals switch from standard telephone service to phone service via the Internet. The reason is simple: A single network to carry voice and data is easier to scale, maintain, and administer. As an added bonus, it's also cheaper, because VoIP is free of the endless government regulations and tariffs imposed upon phone companies. VoIP is simply overflowing with hack potential, and VoIP Hacks is the practical guide from O'Reilly that presents these possibilities to you. It provides dozens of hands-on projects for building a VoIP network, showing you how to tweak and customize a multitude of exciting things to get the job done. Along the way, you'll also learn which standards and practices work best for your particular environment. Among the quick and clever solutions showcased in the book are those for: * gauging VoIP readiness on an enterprise network * using SIP, H.3 23, and other signaling specifications * providing low-layer security in a VoIP environment * employing IP hardphones, analog telephone adapters, and softPBX servers * dealing with and avoiding the most common VoIP deployment mistakes In reality, VoIP Hacks contains only a small subset of VoIP knowledge-enough to serve as an introduction to the world of VoIP and teach you how to use it to save money, be more productive, or just impress your friends. If you love to tinker and optimize, this is the one technology, and the one book, you must investigate.