程控交换机专业英语PDF电子书下载

Unit1 1

Text A: The Slow Push To SPC 1

Text B: ITT 1240 Digital Exchange General Introduction 9

Fast Reading: The Telephone and Its Inventor 15

Unit2 18

Text A: Switching Techniques 18

Text B: ITT 1240 Digital Exchange Operating System 27

Fast Reading: Early Telephone and Its Improvement 32

Text A: Connection Unit 35

Unit3 35

Text B: ITT 1240 Operation and Maintenance Basic Maintenance Functions 43

Fast Reading: Telephone Exchange 49

Unit4 52

Text A: Control Architecture 52

Text B: NEAX61E System Outline 61

Fast Reading: The First Lady of Telecommunication 66

Unit5 69

Text A: Software In Electronic Switching Systems 69

Text B: NEAX61E Basic Software Features 77

Fast Reading: Automatic Switchboards 83

Unit6 86

Text A: Some Languages Used In Switching Software 86

Text B: AXE High Technology Switching System 94

Fast Reading: A Look at the Future of Audioconferencing 101

Unit7 104

Text A: Overview of Call Processing 104

Text B: AXE Common Channel Singalling Subsystem(CCITT No.6) 112

Fast Reading: Features of the Cable Configuration 119

Text A: Common-channel Signalling 122

Unit8 122

Text B: New 5ESS Switch 130

Fast Reading: 136

Unit9 139

Text A: Switched Multi-megabit Data Service(SMDS) 139

Text B: 5ESS Gateway Switch 148

Fast Reading: Long Distance Telephoning 153

Unit10 156

Text A: UMTS-Mobile Communications Beyond the Year 2000 156

Text B: Electronic Mobile Exchange Basic Design Concepts 165

Fast Reading: Cellular System Overview 171