• Preface -- xi
• CHAPTER 1. COMMUNICATIONS AND COMMUNICATION LINKS -- 1
• 1.1 Channels and circuits -- 4
• 1.2 Transmission media -- 8
• 1.3 Communication-link configurations -- 14
• 1.4 Analog transmission versus digital transmission -- 16
• CHAPTER 2. TRANSMISSIONS OVER VOICE-GRADE CIRCUITS -- 21
• 2.1 Overall attenuation -- 23
• 2.2 Attenuation-frequency characteristics -- 31
• 2.3 Echoes -- 34
• 2.4 Return loss -- 41
• 2.5 Noise -- 46
• 2.6 Delay distortion -- 59
• 2.7 Translation errors in carrier systems -- 66
• 2.8 Phase Jitter -- 67
• 2.9 Harmonic distortion -- 75
• 2.10 Nonlinear distortion -- 76
• 2.11 Bias distortion -- 77
• 2.12 Characteristic distortion -- 79
• 2.13 CCITT Recommendations referring to data transmission over voice-grade circuits -- 80
• 2.14 Estimating end-to-end analog transmission performance -- 82
• 2.15 Principles of circuit bridging -- 86
• CHAPTER 3. MODULATION, DEMODULATION, BINARY BASEBANDS, AND MODEMS -- 89
• 3.1 Analog modulation and demodulation -- 89
• 3.2 Pulse modulation -- 93
• 3.3 Binary basebands -- 97
• 3.4 Modems -- 107
• 3.5 Short-distance digital interconnections, acoustic couplers, facsimiles, and data encryption -- 122
• 3.6 Summary of CCITT recommendations relating to modems -- 130
• CHAPTER 4. CHANNEL-CAPACITY-INCREASING METHODS AND PACKET SWITCHING -- 133
• 4.1 Channel-capacity-increasing methods on data transmission -- 135
• 4.2 Analog voice compression method -- 138
• 4.3 Digital voice compression methods -- 139
• 4.4 Utilization of idle transmission periods -- 142
• 4.5 Packetized speech -- 144
• 4.6 Packet-switching data networks -- 145
• CHAPTER 5. MULTIPLEXING -- 149
• 5.1 Multiplexing techniques -- 149
• 5.2 Comparison of multiplexing techniques -- 161
• 5.3 Hierarchy of analog channels -- 165
• 5.4 Hierarchy of digital channels -- 173
• CHAPTER 6. SYNCHRONIZATION -- 177
• 6.1 Synchronization techniques used in data equipment -- 177
• 6.2 Asynchronous and synchronous transmission -- 182
• 6.3 Synchronization of data equipment in different transmission networks -- 184
• 6.4 Organization of international and national digital networks -- 194
• CHAPTER 7. INTERFACING, PROTOCOLS, INFORMATION CODES, ERROR CORRECTION -- 197
• 7.1 Level 1 protocols. Physical interface between DTE and network -- 200
• 7.2 Interface control circuit operations -- 220
• 7.3 Level 2 (data-link) protocols -- 231
• 7.4 Level 3 (network-control) and higher-level (end-to-end) protocols -- 238
• 7.5 Information codes -- 243
• 7.6 Error-detection and correction techniques -- 247
• 7.7 Digital services and interfacing units -- 253
• CHAPTER 8. SATELLITE COMMUNICATIONS -- 259
• 8.1 Description of a satellite communications system -- 259
• 8.2 Forms of operation -- 264
• 8.3 Multiple-access and modulation techniques -- 268
• 8.4 Digital data transmission (in the United States) -- 274
• 8.5 Propagation-delay problems and error-detection methods -- 276
• 8.6 The Marisat system -- 279
• 8.7 Advantages and future of satellite communications -- 280
• 8.8 CCIR recommendations and reports for data transmission via satellites -- 282
• CHAPTER 9. MONITORING AND TESTING ON OPERATIONAL CIRCUITS -- 285
• 9.1 Analog technique,PAR measurements -- 286
• 9.2 Distortion measurements on digital circuits -- 288
• 9.3 Digltal monitoring and testing -- 294
• 9.4 Technical control center -- 302
• CHAPTER 10. OPTICAL-FIBER TRANSMISSION -- 313
• 10.1 System configuration -- 313
• 10.2 Optical-fiber cable -- 315
• 10.3 Light sources -- 320
• 10.4 Optical detectors -- 322
• 10.5 Splicing and connectors -- 327
• 10.6 Fiber-optic-cable installation methods -- 329
• 10.7 Testing and test instruments -- 333
• 10.8 Advantages and deterrents -- 335
• 10.9 Recent developments in fiber-optic components and the future -- 337
• CHAPTER 11. SHIELDING, GROUNDING, PROTECTION OF SYSTEMS, AND STATIC ELECTRICITY -- 341
• 11.1 Sources of interference -- 342
• 11.2 System and circuit protection -- 345
• 11.3 Circuit isolation -- 372
• 11.4 Static electricity in the electronics industry -- 382
• CHAPTER 12. LOCAL-AREA NETWORKS -- 389
• 12.1 Beginning of local-area networks -- 390
• 12.2 Network topologies and protocols -- 391
• 12.3 Llnk access procedures -- 392
• 12.4 Transmission mediums for LANs -- 395
• 12.5 Applications, benefits, and future of LAN -- 401
• 12.6 Personal computer networks -- 404
• Appendix A. Organizations involved in telecommunications -- 409
• Appendix B. Telephone signaling -- 415
• Glossary -- 425
• Index -- 471