Breakthroughs in Telephone Technology
From Bell to Smartphones
1st Edition
Published on 1. January 2012
145 pages
978-1-61530-724-1 (ISBN)
Description
In an age where near-instantaneous communication is available through all manners of portable and pocket-sized devices, it is easy to overlook the genesis of telecommunication instrumentation-the telephone. Since Alexander Graham Bell patented the first phone in the 1800s, the telephone has undergone numerous changes to its look and functionality. This detailed volume examines the development of the telephone and related technologies, including everything from the transistor to fax machines, smart phones, and VoIP technology.
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Robert Curley
Breakthroughs in Telephone Technology
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12/2011
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Content
- Cover
- Half Title
- Title
- Copyright
- Contents
- Introduction
- Chapter 1 The Development of the Basic Landlline Telephone
- Working Components
- Power Source
- Switch Hook
- Dialer
- Dialer
- Transmitter
- Receiver
- Anti-Sidetone Circuit
- Early Sound Transmitters
- Johann Reis's "Philosophical Toys
- Gray and Bellis Race for a Patent
- The Search for a Successful Transmitter
- Alexander Graham Bell
- Thomas Augustus Watson
- From Hand-Cranked to Cordless: 100 Years of AT&T Telephones
- Western Electric
- Chapter 2 The Development of the Public Switched Telephone Network
- Switching
- Manual Switching
- Electromechanical Switching
- Electronic Switching
- Digital Switching
- The Switching Network
- Signaling
- Rotary Dialing
- Push-Button Dialing
- Interoffice Signaling
- Transmission
- From Single-Wire to Two-Wire Circuits
- Problems of Interference and Attenuation
- Analog and Digital Transmission
- DSL
- Coaxial Cable
- Microwave Link
- Optical-Fibre Cable
- Terrestrial Radio
- Undersea Cable
- Satellite
- Chapter 3 The Principles of Telecommunications Systems
- Analog-To-Digital Conversion
- Sampling
- Quantization
- Harry Nyquist
- Bit Mapping
- Source Encoding
- Huffman Codes
- The Lempel-Ziv Algorithm
- Run-Length Codes
- Channel Encoding
- Repetition Codes
- The Hamming Code
- Convolutional Encoding
- Modulation
- Amplitude Modulation and Frequency Modulatlion
- Digital Modulation
- Multiplexing
- Frequency-Division Multiplexing
- Time-Division Multiplexing
- Multiple Access
- Frequency-Division Multiple Access
- Time-Division Multiple Access
- Code-Division Multiple Access
- Chapter 4 Faxes and Modems
- The Fax
- Standard Fax Transmission
- History of Fax Technology
- Bits and Bytes
- The Modem
- Development of Voiceband Modems
- Voiceband Modem Operating Standards
- Cable Modems
- DSL Modems
- Chapter 5 Mobile Phones, Videophones, and Internet Phones
- The Cell Phone
- Cellular Communication
- Development of Cellular Systems
- CUL8R:Texting
- The Smartphone
- The Satellite Phone
- The iphone
- The Videophone
- Early Videophones
- Analog Videophones
- Digital Videophone Systems
- Videoconferencing
- VoIP
- Conclusion
- Glossary
- Bibliography
- Index
- Back Cover
