"A James Martin book"--Cover.

Includes bibliographical references and index.

. INTRODUCTION. 1. The Future. 2. Organizations Involved in Telecommunications. 3. Terminals and Codes. 4. Systems That Use Data Transmissions. 5. Man-Computer Dialogue. 6. Telecommunications Standards. 7. Communications Network Architecture. 8. The Structure of Telecommunication Networks. II. ANALOG TRANSMISSION. 9. DC Signalling. 10. AC Signalling and Bandwidth. 11. Transmission Media. 12. Attenuation and Repeaters. 13. Modulation and Demodulation. 14. Multiplexing. 15. Modems. III. DIGITAL TRANSMISSION. 16. The Digital Revolution. 17. Digital Transmission and PCM. 18. Optical Fiber Transmission Systems. 19. Integrated Services Digital Network. 20. ISDN Services and Applications. 21. Broadband Networks. 22. Satellite Communications. 23. The Maximum Capacity of a Channel. 24. Tariffs. IV. SWITCHING. 25. Telephone Switching. 26. Time-Division Switching. 27. The AT&T 5ESS Central Office Switch. 28. Control Signalling. 29. Packet Switching. 30. Concentrations and Multiple Access. V. COMMUNICATIONS IN THE OFFICE. 31. Private Branch Exchanges. 32. Local Area Networks. 33. Electronic Mail Document Communications. 34. Enhanced Voice and Video Services. VI. IMPERFECTIONS. 35. Noise and Distortion. 36. Line Failures. 37. Detection and Correction of Data Errors. 38. Delays and Blocking.

The world's telecommunication links and their use for computer data transmission are explored. Author Martin gives readers a detailed explanation and account of many areas, including telecommunications businesses, fiber optic transmission and much more. Imperfections which affect the quality and capabilities of telecommunication systems are also explored.