Broadband access training course description

ADSL is a broadband technology providing fast Internet access (amongst other applications) over existing telephone lines. This course covers an overview of the DSL family, what ADSL is through to how ADSL works.

What will you learn

• Describe what ADSL is.
• Describe how ADSL works.
• Describe the ADSL architecture.
• Recognise the limitations of ADSL.
• List the elements required for an ADSL installation.

Broadband access training course details

Broadband access training course contents

• What is ADSL?

Broadband definitions, OSI layer 1, ADSL services, WANS. ADSL features: always on, point to point, Asymmetric, speeds. ADSL benefits, xDSL family, standards, history, example DSL forum documents.

• ADSL architecture

The big picture, The PSTN and telephones, Digital and analogue, PSTN and modems, ADSL vs. modem speeds, Block 1: Customer premises, Block 2: The last mile, Block 3: The exchange, Block 4: the core network.

• Customer premises

Splitters, micro filters, splitter architectures, Splitterless ADSL, ADSL modems, USB, ADSL routers.

• The local loop

ADSL PHY, Some basics, ADSL margins, speed implications, distances, RADSL, Line testing, whoosh tests, line coding, multiple channels, FDM, echo cancellation, Modulation: AM, FM, PM, QAM, QAM constellations, DMT, CAP, Framing, Superframes, fast data mode, interleaved mode, RADSL revisited.

• The exchange

Local exchange ADSL items, DSLAMs, ADSL racks, Contention.

• The core network

The role of the core network, ATM, ATM VPI/VCI, ATM cells, ATM layers, AAL5, RAS, Home gateways.

• ADSL and the higher layers

Layer 2 choices, PPPoA, PPP, CHAP, Layer 4 and above, ADSL and ATM.

• Installing and configuring ADSL

Choosing providers, line activation, hardware requirements, Configuring layer 1 and layer 2, Configuring IP.

• Summary

ITU ADSL standards

Learning path

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