n this video course, we drill into the technology a bit, to understand the concepts, standards and technologies for actually transmitting voice calls from one place to another. |
We'll give you a real understanding of what "digital" actually means, and how it is implemented. We’ll explain what a "DS0" is, and take a practical tour of digital circuits, including T1, T3, SONET and ISDN. At a high level, we'll see how voice, data and video can be integrated. |
Then, we'll take a closer look at how this is all actually done, with Time Division Multiplexing (TDM) and digital carrier systems that are the technologies at the heart of telecom networks. Without getting bogged down on technical details, we'll provide you with a basic understanding of how transmission systems work, including T1 over copper wires and SONET over fiber. |
Chapter 1 Digital Communications | |
1.03 Why Digital? 1.05 Analog and Digital: What Do We Really Mean? 1.07 Continuous Signals, Discrete Signals 1.09 Voice Digitization (Analog → Digital Conversion) 1.11 Voice Reconstruction (Digital → Analog Conversion) 1.13 Voice Digitization Summary 1.15 The Digital Hierarchy: Industry Standard Line Speeds 1.17 Popular Technologies: Digital Carrier Systems 1.19 ISDN BRI and PRI 1.21 Digital Circuit Voice Applications 1.23 Digital Circuit Data Applications 1.25 Digital Video 1.27 Integration: Voice, Video, Data | |
Chapter 2 Transmission Systems | |
2.03 Time Division Multiplexing 2.05 T1 Carrier System 2.07 T1 Basics: Multiplexers 2.09 Framing and Channels 2.11 Pulses and Repeaters 2.13 How T1 is Provided 2.15 Fibers and Cables 2.17 SONET and DWDM: Core Networks 2.19 International Digital Hierarchies |
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