Digital Subscriber Line: ADSL, xDSL

Why this ADSL course?

This course introduces the terminology and technology used by ADSL systems. In just one day, this unique course provides an essential and authoritative coverage of ADSL and xDSL-related technologies.

Who should attend this ADSL course

• This course is designed for people such as:
  • Engineers
  • Managers
  • Technicians
  • Installers
  • Maintenance personnel.

ADSL Course Pre-requisites

Delegates should have some practical experience of networking prior to attending the course. Course 306: Introduction to Datacomms and Networking, or equivalent knowledge, is recommended.

Lifetime Post-Course Support

After completing this ADSL training course, delegates receive lifetime post-training support from LEVER Technology Group, to help them apply the technologies and skills they have learned with us, to provide career-long support, and to ensure they are better equipped for their future roles in IT and networking.

ADSL Training Course Content

Introduction and background to xDSL

• The analogue local loop
• The copper investment
• The need for bandwidth
• The xDSL family
• ADSL positioning

xDSL technologies

• The evolution of xDSL technologies
• The Digital Subscriber Line
• The distance equation
• High bit rate DSL – HDSL/HDSL2
• HDSL and E1/T1 circuit provision
• Single pair/symmetric DSL – SDSL
• SDSL vs HDSL
• Asymmetric DSL – ADSL
• Consumer DSL/ADSL Lite
• The splitter issue
• Rate Adaptive DSL – RADSL
• ISDN DSL – IDSL
• Very high-speed DSL-VDSL

ADSL architecture

• ADSL standards
• ADSL network components
• The ADSL interface
• The ADSL transceiver unit function
• ADSL reference points
• Modulation techniques, QAM
• ADSL line coding: CAP vs DMT

ADSL framing

• ADSL bearers
• ADSL simplex and duplex operation
• The ADSL superframe
• ADSL framing structure
• ADSL overheads
• ADSL distribution modes
• ADSL and ATM services
• TCP/IP and ADSL

Accessing services via DSL

• The DSL Access Mux (DSLAM)
• Network components: IP routers, ATM switches, FRADs, etc.
• DSLAM and Local Area Networks
• DSLAM and SDH integration
• DSLAM features
• DSLAM and network management

ADSL in practice

• World-wide trials and services
• Applications for ADSL
• Customer Premises Equipment issues
• Introduction & Background
• Information and Services
• Conferencing and Meeting
• Switch Congestion
• xDSL Business Case
• xDSL Markets
• Copper Wire and the 4KHz Limit
• Typical Product Offerings

xDSL Technologies

• Distance can be a Problem
• Terminology
• Splitters
• ISDN
• HDSL
• HDSLVersion 2
• G.SHDSL
• ADSL
• RADSL
• VDSL

ADSL Architecture

• Why is ADSL Asymetric?
• Standards and the Forum
• Network Model
• Technologies and Modulation
• ADSL Multiplexed Channels
• Transport Capacity
• The Line Codes – CAP versus DMT
• Signalling and Management

ADSL Framing

• Frames and Superframes
• Frame Structure
• Fast and Interleaved Data
• An ATM Refresher
• IP and ADSL

ASDL Evolved

• ASDL2
• ADSL2+

The DSL Access Mux (DSLAM)

• DSLAM Requirements
• Control and Management

ADSL Applications

• Ethernets
• Video Streaming
• Voice over DSL
• Delay
• ADSL and ISDN
• VeDSL
• VoDSL
• Sharing the Line

Unbundling Strategies

• The Regulator’s Role
• Asymmetry
• Different Ways of Unbundling

xDSL Alternatives and Competition

• Cable Modems
• Power Cables
• Wireless Local Loop
• Low Earth Orbit Satellites
• Broadband Wireless Access