Chapter1. Introductory concepts; Chapter 2. Signals convey intelligence; Chapter 3. Quality of service and telecommunication impairments; Chapter 4. Transmission and switching : cornerstones of a network; Chapter 5. Transmission aspects of voice telephony; Chapter 6. Digital networks; Chapter 7. Signaling; Chapter 8. Local and long-distance networks; Chapter 9. Concepts in transmission transport; Chapter 10. Data communications; Chapter 11. Enterprise networks I : local area networks; Chapter 12. Enterprise networks II : wide area networks; Chapter 13. Metropolitan area networks; Chapter 14. CCITT signaling system no. 7; Chapter 15. Voice-over packets in a packet network; Chapter 16. Television transmission.