Fundamentals of Digital Switching
Başlık:
Fundamentals of Digital Switching
ISBN:
9781468444391
Edition:
1st ed. 1983.
Yayın Bilgileri:
New York, NY : Springer US : Imprint: Springer, 1983.
Fiziksel Tanımlama:
432 p. 23 illus. online resource.
Series:
Applications of Communications Theory
Contents:
1. Circuit-Switching Fundamentals -- 1. Introduction -- 2. Circuit-Switched Networks -- 3. Circuit-Switching Systems -- 4. Introduction to Digital Switching -- 5. Summary -- Questions -- References -- 2. Random Nature of Service Demands -- 1. Introduction -- 2. Nature of Demand -- 3. Important Probability Distribution Functions -- 4. Digital Switching Systems -- 5. Traffic Engineering -- 6. Conclusions -- Questions -- References -- 3. Switching System Controls -- 1. Introduction -- 2. Switching Center Network Controls -- 3. Call Information Processing -- 4. Operations Support -- 5. Summary -- Questions -- References -- 4. Switching System Software -- 1. Introduction -- 2. Historical Introduction to Switching System Software -- 3. Central Office Design Criteria -- 4. Basic Electronic Switching Software -- 5. New Model for Switching System Software -- 6. Conclusions -- Questions -- References -- 5. Time-Division Networks -- 1. Introduction -- 2. Sampling and Modulation -- 3. The Time-Division Switching Concept -- 4. Lossless Analog Time-Division Switching -- 5. Lossy Analog Time-Division Switching -- 6. Digital Encoding and Multiplexing -- 7. Time-Division Switching -- 8. No. 4 ESS -- 9. Conclusions -- Questions -- References -- 6. Circuit versus Packet Switching -- 1. Introduction -- 2. Present and Future Communications Networks -- 3. Voice and Data Traffic Characteristics -- 4. Circuit, Message, and Packet Switching -- 5. Approaches to the Integration of Voice and Data -- 6. Example of an Integrated Packet- and Circuit-Switching Approach -- 7. New Developments and Services -- 8. Summary and Conclusions -- Questions -- References -- 7. The Analog Termination -- 1. Introduction -- 2. Line and Trunk Terminations -- 3. Analog Termination Requirements -- 4. Digital Representation of Speech -- 5. Line Circuit Description -- 6. Conclusions -- Questions -- References -- 8. Digital Terminations and Digital Signal Processing -- 1. Introduction -- 2. Interface to Digital Transmission Facilities -- 3. Digital Customer Loop Transmission -- 4. Digital Signal Processing in Digital Switching -- 5. Conclusions -- Questions -- References -- 9. Digital Switching System Architectures -- 1. Introduction -- 2. Digital Switching System Operation -- 3. Digital Switching System Synthesis -- 4. Examples of System Architectures -- 5. Summary and Trends -- Questions -- References -- 10. Digital Networks -- 1. Introduction -- 2. Digital Network Evolution -- 3. Digital Network Design -- 4. Conclusions -- Questions -- References.
Abstract:
The development of low-cost digital integrated circuits has brought digital switching from a concept to an economic reality. Digital switching systems have now found worldwide acceptance and there are very few new switch ing systems being considered either for design or application which are not digital. Digital technology has created new opportunities for innovation including the integration of digital transmission and switching, the combi nation of voice and data services in one switching entity, and the design of switching systems which are economical over a broad range of sizes. In the strict sense, the term "digital switching" refers to a system which establishes a message channel between two terminations where infor mation is represented in digital form. In more common usage, a digital switch usually contains a time-divided network composed of logic gates and digital memory to accomplish the switching function. The intent of this book is to provide an introductory level explanation of the principles of digital switching. These principles apply to both public and PABX switching. The book is aimed at those who apply, design, main tain, or simply wish to understand digital switching techniques. An electri cal engineering degree is definitely not required for comprehension. We have concentrated on explaining digital switching techniques without the use of detailed mathematics. However, each chapter contains a comprehen sive list of references which will lead the reader to sources for a more in-depth study of the many subjects covered.
Added Author:
Ek Kurum Yazarı:
Elektronik Erişim:
Full Text Available From Springer Nature Engineering Archive Packages
Dil:
English