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The inheritance and progress of human civilization and society are inseparable from the development of communication technology and information networks. How is information acquisition and transfer achieved? How do people in different countries and regions share information? Why can a small mobile phone transmit different applications such as voice, image and video? What changes will the evolution of communication technology bring to our lives? Welcome to follow this course and embark on a journey of exploration into the mysterious world of communication.
Chapters
Chapter 1：Part 1 Lesson 1 Course Introduction (38 minutes and 15 seconds)
Chapter 2：Part 1 Lesson 2 Overview of Modern Communication Networks and Supporting Technologies (41 minutes and 13 seconds)
Chapter 3：Part 2 Lesson 1 Audiovisual Services and Audio Signal Characteristics (53 minutes and 53 seconds)
Chapter 4：Part 2 Lesson 2 Video Technology Basics (50 minutes and 39 seconds)
Chapter 5：Part 2 Lesson 3 Audio and video information digitization and compression coding technology (52 minutes and 55 seconds)
Chapter 6：Part 2 Lesson 4 Data and multimedia communication services and communication terminals (48 minutes and 16 seconds)
Chapter 7：Part 3 Lesson 1 Network Classification (47 minutes and 30 seconds)
Chapter 8：Part 3 Lesson 2 The role of exchange and the basic principles of exchange (47 minutes and 4 seconds)
Chapter 9：Part 3 Lesson 3 Node Switching Technology (49 minutes and 55 seconds)
Chapter 10：Part 3 Lesson 4 Connectionless and connection-oriented (45 minutes and 46 seconds)
Chapter 11：Part 3 Lesson 5 Connection Function of Switching System (49 minutes and 56 seconds)
Chapter 12：Part 3 Lesson 6 Other functions of switching systems and basic principles of circuit switching (46 minutes and 31 seconds)
Chapter 13：Part 3 Lesson 7 Hardware Implementation of Node Switching Network (49 minutes and 2 seconds)
Chapter 14：Part 3 Lesson 8 Node Switching Network and Call Processing (49 minutes and 44 seconds)
Chapter 15：Part 3 Lesson 9 Call Handling Process (49 minutes and 9 seconds)
Chapter 16：Part 3 Lesson 10 Intelligent Network Technology (46 minutes and 44 seconds)
Chapter 17：Part 3 Lesson 11 Basic Principles of Packet Switching (49 minutes and 49 seconds)
Chapter 18：Part 3 Lesson 12 Basic Principles of Ethernet Technology and ATM Technology (47 minutes and 51 seconds)
Chapter 19：Part 3 Lesson 13 ATM switching system and network interconnection (42 minutes and 56 seconds)
Chapter 20：Part 3 Lesson 14 IP network architecture and protocol addresses (48 minutes and 15 seconds)
Chapter 21：Part 3 Lesson 15 Router Working Principle and Hardware Structure (51 minutes and 17 seconds)
Chapter 22：Part 3 Lesson 16 Softswitch Network Technology (46 minutes and 5 seconds)
Chapter 23：Part 4 Lesson 1 Overview of Transport Network and SDH (48 minutes and 35 seconds)
Chapter 24：Part 4 Lesson 2 SDH frame structure and segment overhead (50 minutes and 57 seconds)
Chapter 25：Part 4 Lesson 3 SDH Synchronous Multiplexing and Mapping Principles (50 minutes and 5 seconds)
Chapter 26：Part 4 Lesson 4 SDH channel overhead and pointers and multiplexing examples (53 minutes and 41 seconds)
Chapter 27：Part 4 Lesson 5 Overview of Optical Fiber Communication and Principles of Optical Fiber Light Guidance (52 minutes and 37 seconds)
Chapter 28：Part 4 Lesson 6 Optical Fiber Transmission Characteristics (54 minutes and 34 seconds)
Chapter 29：Part 4 Lesson 7 Semiconductor Lasers (52 minutes and 17 seconds)
Chapter 30：Part 4 Lesson 8 Semiconductor lasers, light-emitting diodes and optical transmitters (44 minutes and 13 seconds)
Chapter 31：Part 4 Lesson 9 Light Detector (48 minutes and 16 seconds)
Chapter 32：Part 4 Lesson 10 Optical Receiver and Optical Amplifier (50 minutes and 8 seconds)
Chapter 33：Part 4 Lesson 11 Optical Amplifier and Optical Wavelength Division Multiplexing Technology (52 minutes and 51 seconds)
Chapter 34：Part 4 Lesson 12 Optical Network Technology (53 minutes and 10 seconds)
Chapter 35：Part 4 Lesson 13 Access Network Overview (49 minutes and 32 seconds)
Chapter 36：Part 4 Lesson 14 Copper Wire Access Technology (53 minutes and 21 seconds)
Chapter 37：Part 4 Lesson 15 Optical Fiber Access Technology (51 minutes and 2 seconds)
Chapter 38：Part 4 Lesson 16 Ethernet Passive Optical Networks and Other Access Technologies (51 minutes and 4 seconds)
Chapter 39：Part 5 Lesson 1 Overview of Wireless Communications (47 minutes and 15 seconds)
Chapter 40：Part 5 Lesson 2 Wireless Propagation Model (48 minutes and 57 seconds)
Chapter 41：Part 5 Lesson 3 Link Budget and Modulation Coding Technology (47 minutes and 45 seconds)
Chapter 42：Part 5 Lesson 4 Anti-fading and anti-interference technology and multiple access technology (49 minutes and 46 seconds)
Chapter 43：Part 5 Lesson 5 Random Access and Cellular Networking (49 minutes and 33 seconds)
Chapter 44：Part 5 Lesson 6 Cellular Networking and GSM System (49 minutes and 38 seconds)
Chapter 45：Part 5 Lesson 7 CDMA System and 3G Technology (49 minutes and 46 seconds)
Chapter 46：Part 5 Lesson 8 3G and Wireless Communication New Technologies (49 minutes and 52 seconds)
Chapter 47：Part 5 Lesson 9 Digital Microwave Communication System (49 minutes and 16 seconds)
Chapter 48：Part 5 Lesson 10 Satellite Communication Systems (47 minutes and 13 seconds)
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