This course describes the characteristics and structure of access networks based on the use of copper wires and explains the principles of the digital subscriber line (DSL) technologies that provide access to broadband services over those wires.
You will need a basic understanding of analogue and digital transmission before attempting this course.
This e-learning course has a comprehensive range of interactive training facilities to provide a total learning experience. Technical words and acronyms have links to an online glossary giving an instant explanation. Interactive simulations explain concepts and systems operation. Onscreen question sessions at the end of each module test understanding and provide further guidance and instruction. Revision links provide quick access to subjects previously discussed and relevant to the module being studied.
By the end of this course you will be able to:
- describe the structure and the role of the functional components of a conventional copper-based access network.
- describe the cause and effects of the various impairments on the last mile that limit the performance of DSL service.
- explain the principles, role and characteristics of the various modulation techniques used in DSL systems.
- explain the principles, role and characteristics of the various error correction systems used in DSL systems.
- explain the basic principles and operation of an ADSL system and describe the functions of its components.
- describe and compare the functions, characteristics and performance of various types of DSL system including ADSL2+ and VDSL2.
1. Course introduction
2. Digital access over the last mile
3. Limitations of the local loop
4. Modulation techniques
5. Error correction
6. ADSL principles
7. ADSL and VDSL versions