《程控交换专业英语》

PART A　The Slow Push for Progress1

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PART B　1．Subscriber and Exchange Relationships12

2．Toll Switching16

PART CElectronic Switching in the U.S19

参考译文21

PART A Basic Switching and Traffic Concepts25

PART B 1．Concentration and Expansion36

2．Use of the Multiple39

PART C Concentration and Expansion Stages43

参考译文47

Signalling Methods53

PART A Common Stored-program Control and53

PART B 1．Processing65

2．Types of Control66

PART C Control and Signal Methods70

参考译文72

PART A PCM Switching Principles78

PART B PCM Toll Exchange90

PART C Local Digital Exchange97

参考译文99

PART A The Control of SPC Exchanges105

PART B Call Processing Programs117

PART C The Establishment of a Local Call122

参考译文127

PART A The Elements of Stored-program Control134

PART B The Stored Program146

PART C 1．Program Coding and Assembly153

2．Program Testing and Evaluation154

参考译文156

PART A Automatic Private Branch Exchanges162

PART B 1．Centralized Extension Service171

2．DOD and DID172

PART C Typical PABX Systems177

参考译文180

PART A Data Communications184

PART B Packet-switching Networks194

PART C Telex Switching Systems200

参考译文203

PART A Common-channel Signalling208

PART B CCS Networks220

PART C Application of Common-channel226

Signalling226

参考译文230

PART A ISDN Introduction237

PART B ISDN Applications254

PART C ISDN Standardization261

参考译文267

PART A FETEX-150 Digital Switching Syst？m275

PART B FETEX-150 Recent Change288

PART C New Development of FETEX-150293

参考译文297

PART A SYSTEM 12—Digital Exchange304

PART B Features of SYSTEM 12329

PART C 1．System Specification341

2．Reliability and Maintainability342

3．Further Developments and Future345

参考译文347

词汇表364

词组表420

练习答案433