Fundamentals of Telecommunications, 2nd Edition

705 Pages·2013·6.289 MB·English

by  Roger L. Freeman

Fundamentals of
Telecommunications
Second Edition
Roger L. Freeman
A JOHN WILEY & SONS, INC., PUBLICATION

Fundamentals of
Telecommunications

Fundamentals of
Telecommunications
Second Edition
Roger L. Freeman
A JOHN WILEY & SONS, INC., PUBLICATION
Copyright2005byRogerL.Freeman.Allrightsreserved.
PublishedbyJohnWiley&Sons,Inc.,Hoboken,NewJersey.
PublishedsimultaneouslyinCanada.
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LibraryofCongressCataloging-in-PublicationData:
Freeman,RogerL.
Fundamentalsoftelecommunications/byRogerL.Freeman.–2nded.
p.cm.
Includesbibliographicalreferencesandindex.
ISBN0-471-71045-8(cloth)
1.Telecommunication.I.Title.
TK5101.F65952005
621.382—dc22
2004053001
PrintedintheUnitedStatesofAmerica.
10987654321
To Paquita

CONTENTS
Preface xxiii
Chapter1 IntroductoryConcepts 1
1.1 What Is Telecommunication? 1
1.2 Telecommunication Will Touch Everybody 1
1.3 Introductory Topics in Telecommunications 2
1.3.1 End-Users, Nodes, and Connectivities 2
1.3.2 Telephone Numbering and Routing 5
1.3.3 The Use of Tandem Switches in a Local Area
Connectivity 7
1.3.4 Introduction to the Busy Hour and Grade of
Service 7
1.3.5 Simplex, Half-Duplex, and Full Duplex 9
1.3.6 One-Way and Two-Way Circuits 9
1.3.7 Network Topologies 10
1.3.8 Variations in Traffic Flow 13
1.4 Quality of Service 14
1.5 Standardization in Telecommunications 15
1.6 The Organization of the PSTN in the United States 16
1.6.1 Points of Presence 16
Review Exercises 17
References 18
Chapter2 SignalsConveyIntelligence 19
2.1 Chapter Objective 19
2.2 Signals in Everyday Life 19
2.3 Basic Concepts of Electricity for Communications 20
2.3.1 Early Sources of Electrical Current 20
2.3.2 The Electrical Telegraph: An Early Form of
Long-Distance Communications 21
2.3.3 What Is Frequency? 23
2.4 Electrical Signals 28
2.4.1 Introduction to Transmission 28
vii