Understanding Telephone Electronics

Abstract

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 SetAbout 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 CircuitsAbout 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 MachinesOther 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