Introduction
The growth of Applications,
Never Underestimate, Multimedia Applications,
Multimedia Storage,
High Speed Internet Applications,
Business Applications, Telecommuting,
Remote LAN Access, Video on Demand,
Virtual Private Networks,
Applications Bandwidth Requirement,
File Transfer Times for typical applications,
Demand for Bandwidth,
Bandwidth Use,
What is DSL? DSL Technologies,
Flavours of DSL,
DSL Reaches and rates, HDSL, HDSL-2, S-HDSL, ADSL, ADSL Lite or
glite, RADSL, VDSL.
The Copper Infrastructure
Typical Voice Network,
Signalling Architecture,
Long- Loops, ISDN Access,
E1 access via the Local Loop,
Bridged Taps, Attenuation,
ISDN over the Local Loop, Early HDSL,
Advances in Modulation Techniques,
Theoretical Speed v Range,
Cross talk, Cross talk increase,
Asymmetry Improves Performance.
ADSL System Components
ADSL System Components,
Data Centric Architecture,
Telco Centric Architecture,
Typical ADSL Configuration,
ADSL Performance,
Overall ADSL,
ADSL Reference Diagram, DSLAM,
Typical ADSL Frequency Spectrum.
ADSL Standards
ITU,G992.2, ANSI, ETSI, DSL,
The work of the DSL Forum,
DSL Forum Standard,
DAVIC,
ATM Forum.
Modulation Techniques
2BIQ, CAP, DMT,
ADSL Transceiver Unit,
ADSL Modulation with FDM,
ADSL Modulation with Echo Cancellation,
Typical ADSL Transceiver Unit,
Data Frame, Super frame,
DMT Modulation,
Power Spectrum.
Network Models
The Need for Multiservices,
DSL- Based reference Model,
Frame Relay Services Provisioning,
Nx64 Services Provisioning,
IP/LAN Services Provisioning,
Using a Layer 3 Model,v ADSL using an ATM Model.
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