01 - Chapter 1 Introduction and Overview Outline 1...

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Chapter 1 Introduction and Overview
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Outline 1. Introduction and Overview - Switching and Transmission - Multiplexing and Concentration - Time Scales of Information Transfer 2. Circuit Switching - Space-domain Circuit Switching i.) Nonblocking Properties, Complexity ii.) Clos, Benes Switches - Time-domain Switching
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Outline 3. Packet Switching (Fundamental Principles) - Packet Contention - Interconnection Networks - Sorting Networks - Performances of Simple Switches 4. Advanced Packet Switching Principles - Bandwidth Expansion - Deflection Routing - Switching by Memory I/O - Multicast Switching
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Outline 5. Basic Concepts of Broadband Communications Networks - STM and ATM - Delays in ATM Networks - Cell size considerations - Virtual Channel and Virtual paths 6. Network Traffic Control and Bandwidth Allocation - Fluid-Flow model - On-off stochastic source - Traffic shaping and policing - Open-loop flow control - Closed-loop flow control
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Roles of Switching and Transmission : 1. Merging of computer and communications technologies 2. Traditional Computer Networks - services non real time - data rate not too high - service quality not guaranteed 3. Telephone Networks - real time - low data rate (64 kbps) - service quality guaranteed
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4. Computer Networks on Telephone Networks - Modems - leased line 5. Multimedia services 6. Integrated Communications Networks 7. Broadband 8. Integration 9. Support of unforeseen services
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Switching center Transmission Line A B Transmission Facilities Switching Facilities Control Functions Roles of Switching and Transmission :
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Fig. 1.1. A two-user network; switching is not required
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