1.Introductory Concepts 2.Signals Convey Intelligence 3.Quality of Service and Telecommunication Impairments 4.Transmission and Switching: Cornerstones of a Network 5.Transmission Aspects of Voice Telephony 6.Digital Networks 7.Signaling 8.Local and Long-Distance Networks 9.Concepts in Transmission Transport 10.Data Communications 11.Enterprise Networks I: Local Area Networks 12.Enterprise Networks II: Wide Area Networks