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

Synopsis

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.

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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Technologies

Broadband Fixed
Telecoms Infrastructure

Number of pages: 10

Status: Archived

Last update: 02 August 2006
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Author: Robin Whittle

NOTE: This report has been archived

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