| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| 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 | |
| Network Transmission | |
| About This Chapter | |
| Why Digital Transmission?, Line Coding | |
| Pulse and Timing Restoration, More Line Codes | |
| What Have We Learned?, Quiz | |
| 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 | |
| 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 | |
| Wireless Telephones | |
| About This Chapter | |
| Cordless Telephones, Mobile Telephones | |
| Cellular Mobile Telephone Service, Digital Communications Networks | |
| What Have We Learned?, Quiz | |
| 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 | |
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