Technology - Infrastructure - Last Mile 5 - ADSL & ADSL2 Technical Standards


We discuss the G.992 technical standards, the original G.dmt, splitterless G.lite, ADSL2 technologies G.dmt.bis and G.lite.bis, Range Extended Annex L. We discuss ADSL2+ (G.992.5), bonded ADSL2+ and non-standard RADSL, ReachDSL and Etherloop. ADSL is compared with HFC, and the data rates of ADSL and VDSL technologies at different distances are compared.

Table of Contents

  • 1. Synopsis
  • 2. ADSL technical standards
    • 2.1 G.992.1 G.dmt ADSL
    • 2.2 G.992.2 G.Lite splitterless ADSL
    • 2.3 G.994.1 and G997.1
    • 2.4 Rate adaptive DSL (RADSL)
    • 2.5 Etherloop
    • 2.6 ReachDSL
    • 2.7 G.992.3 G.dmt.bis ADSL2
      • 2.7.1 Low power mode
      • 2.7.2 Annex N - Packet Transport Mode
    • 2.8 G.992.4 G.lite.bis splitterless ADSL2
    • 2.9 G.992.3 Annex L - range/reach extended ADSL2
    • 2.10 G.992.5 ADSL2+
    • 2.11 ADSL2++
  • 3. Data rates and distances
    • 3.1 Less than 1km
    • 3.2 1 to 3km
    • 3.3 3km and beyond
  • 4. Comparing ADSL and HFC
  • 5. Related reports
  • Table 1 – Properties of major DSL versions – 2006
  • Exhibit 1 – Comparison of ADSL/VDSL and HFC systems

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Broadband Fixed
Telecoms Infrastructure

Number of pages 10

Status Archived

Last updated 2 Aug 2006
Update History

Analyst: Robin Whittle

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