Throughout its history, Understanding Telephone Electronics has been, by far, one of the most popular books on telecommunication electronics in the trade, electronic distribution, and educational markets because of its very simple, direct approach to the technology. In keeping with the distinguished tradition of its predecessors, Understanding Telephone Electronics, Fourth Edition covers conventional telephone fundamentals, including both analog and modern digital communication techniques, and provides basic information on the functions of each telephone system component, how electronic circuits generate dial tones, and how the latest digital transmission techniques work.

Ch. 1 The Telephone System--About This Chapter, The Telephone Set, The Local Loop, The Public Switched Telephone Network, Types of Transmissions, Switching Systems, Transmission System Facilities, System Operating Conditions, Telephone Equipment Registration, Ch. 2 The Conventional Telephone Set-About This Chapter, Switchhook, Pulse Dialing, Anti-Tinkle and Speech Muting, Tone Dialing, Transmitter, Receiver, Electromechanical Ringer, The Hybrid Function, The Electronic Telephone, What Have We Learned?, Quiz; Ch. 3 Electronic Speech Circuits-About This Chapter, DC Requirements for the Local Loop, Two-Way Speech Block Diagram, Protection Circuits, Speech Circuit, DC Line Interface, Transmitter Section, Receiver Section, Line Balancing, Telephone Set Volume Compensation, Availability and Characteristics of Integrated Circuit Speech Networks, What Have We Learned?, Quiz; Ch. 4 Electronic Dialing and Ringing Circuits-- About This Chapter, Dial Pulse Generation Using Integrated Circuits, Circuit Power and Voltage Transients, Pulse Dialer, DTMF Dialing Using Integrated Circuits, Combined Dialers, Electronic Ringer, Electronic Ringer Implementation Example, Complete Integrated Telephone, What Have We Learned? Quiz; Ch.5 Integrated Telephone Circuits-- About This Chapter, The MC34010 Single-Chip Telephone, Using A Microprocessor, Applying the Telephone Circuit, Speakerphones, Integrated Speakerphone Circuits, What Have We Learned?, Quiz; Ch.6 Digital Transmission Techniques-- About This Chapter, Digital Signals, Signal Conversions, Advantages and Disadvantages of Using Digital Signals, Waveform Coders, Time Division Multiplexing, What Have We Learned?, Quiz; Ch.7 Electronics in the Central Office--About This Chapter, The Local Loop, Conventional Central Office Interfaces, Lineside Interface, Trunkside Interface, Electronics in Central Office Interfaces, Combined Codec and Filter IC, Electronic Crosspoint Switching, Subscriber Loop Systems, Digital Multiplexing Equipment, What Have We Learned?, Quiz; Ch. 8 Network Transmission-- About This Chapter, Why Digital Transmission?, Line Coding, Pulse and Timing Restoration, More Line Codes, What Have We Learned?, Quiz; Ch. 9 Modems and Fax Machines-Other Telephone Services--- About This Chapter, What Is a Modem, and Why Is It Required?, Asynchronous Modem Operation, Standards for Digital Equipment Interface, Error Detection and Correction, Standards, Protocols, Facsimile, Computer Fax Devices, What Have We Learned?, Quiz; Ch.10 Fiber Optic Technology-- About This Chapter, Fiber Optic Technology, Electromagnetic Interference and System Safety, Fiber Optic Principles, Optical Characteristics of Fiber Systems, Calculating Losses in Fiber Optic Systems, Fiber Optic Communications Systems, What Have We Learned?, Quiz; Ch.11 Wireless Telephones-- About This Chapter, Cordless Telephones, Mobile Telephones, Cellular Mobile Telephone Service, Digital Communications Networks, What Have We Learned?, Quiz; Ch.12 The Convergence of Technologies-- About This Chapter, The Technology Context, Telecommunications, Cable TV, High-Definition Television, Cable Modems, Internet, The Competitive Context, The International Context, Computer Telephony Integration, What Have We Learned?, Quiz