Introduction to Ip Telephony: Why and How Companies Are Upgrading Private Telephone Systems to Use Voip Services - Tapa blanda

This book explains why people and companies are converting some or all of their existing (legacy) telephone systems from dedicated telephone systems (such as proprietary PBX) to more standard IP telephony systems. These conversions allow for telephone bill cost reduction, increased ability to control telephone services, and the addition of new telephone information services. Through the use of IP telephony service, companies can immediately reduce their telecommunication costs 40% to 70%. This book provides an overview of the different types of IP Telephony systems including IP PBX, IP Centrex and Internet Telephone systems. You will learn the key functional parts of voice over IP systems and how voice over Internet protocol (VoIP) systems work. Explained are the processes used to setup and control IP telephony service. The common IP Telephony protocols including session initiation protocol (SIP), Media Gateway Control Protocol (MGCP) and H.323 are described as well. You will learn how to connect telephones through data networks using adapters or by using telephones that plug directly into data networks (IP telephones). Discover what equipment and service choices you have and how they can affect your costs and service quality. Find out how packet losses and packet delays creates distortion and operational challenges and ways to reduce or eliminate these effects. Advanced telephone features that are only possible through IP Telephony are described along with how customers can setup and configure their equipment through the use of self provisioning web portals. Learn about the different types of services, their typical costs and some of the hidden costs of IP Telephony and ways to reduce or avoid them. Some of the most important topics featured are: . The different types of IP Telephony systems . Functional parts of VoIP systems . The processes used to setup and control IP telephony service . How to connect standard telephones through data networks . What choices you have and how they can effect your service quality . Advanced telephone features that are only possible through IP Telephony . The different types of services and their typical costs . Some of the hidden costs of IP Telephony

LAWRENCE HARTE is the president of APDG, a provider of expert information to the telecommunications market.

Mr. Harte has over 23 years of experience in the electronics industry, including company leadership, product management, development, marketing, design, and testing of telecommunications (cellular), radar, and microwave systems. He has been issued patents relating to cellular technology. He has authored over 75 articles on related subjects and has been a speaker and panel moderator at industry trade events.

Mr. Harte earned an executive MBA at Wake Forest University and received his B.A. from the University of the State of New York. During the TDMA digital cellular standard development process, Mr. Harte served as an editor and voting company representative for the Telecommunications Industries Association (TIA) TR45.3., digital cellular standards committee.

As of 2001, Mr. Harte has authored and co-authored over 20 books relating to telecommunications technology. He has served as a consultant and expert witness for leading companies including Ericsson, Siemens, VLSI, AMD, Casio, Samsung, Sony, ATT, Nokia, Hughes, and many others.

RICHARD LEVINE is the founder and principal engineer of Beta Scientific Laboratory and is also Adjunct Professor of Electrical Engineering at Southern Methodist University. He is active as a technology consultant to many firms developing new cellular and PCS systems and products used in Brazil, Canada, England, France, Germany, Israel, Korea, Mexico, and the United States.

Mr. Levine is a well-known teacher of cellular and PCS technology to people in the industry. He was formerly the chairman of several working groups in the North American digital cellular standards development.

Mr. Levine earned the Bachelor, Master, and Doctor of Science degrees from M.I.T., is licensed as a Professional Engineer, and has earned both amateur and professional radio operator licenses. He has been issued several patents on telecommunications, computer systems, and related technologies.

ROMAN KITKA is the Director, Strategy and Business Crteation, Nokia Ventures Organization. He is a seasoned wireless communications industry veteran, innovator, and visionary.

During his 17 + years in wireless communications, he has held product planning and development, marketing, and market/business development positions with leading wireless manufacturers including Nokia Mobile Phones, Panasonic, GoldStar, and OKI Telecom. Mr. Kitka has influenced several cellular mobile, transportable, and portable phone model designs, features, and functionality. His efforts have resulted in the first cellular payphone, first cellular PBX adjunct "Business Link," voice recognition dialers, as well as the first PCS product launch in the U.S.

Mr. Kitka posssess exceptional foresight and understanding of global market needs, both from anthropological and psychological aspects, as well as the opportunities provided by existing and future wireless communications, Internet and related technologies, and business.

Mr. Kitka, a graduate of Rutgers University in New Jersey, is a co-author of the books CDMA IS-95 FOR CELLULAR AND PCS: Technology, Economics & Services; DELIVERING xDSL; 3G CELLULAR AND PCS DEMYSTIFIED; and WAP DEMYSTIFIED. Mr. Kitka has been a speaker at several wireless communications and Internet conferences and events, both in the U.S. and internationally.