Table A-1: ADSL Maximum Data Rates

Maximum Data Rate

American Wire

Maximum

Metric Gauge

Maximum

Gauge (AWG)

Distance (ft.)

Distance (km.)

1.544 Mbps (T1)

2.048 Mbps (E-1)

24

18,000 ft.

0.5 mm

5.5 km

1.544 Mbps (T1)

2.048 Mbps (E-1)

26

15,000 ft.

0.4 mm

4.6 km

6.144 Mbps (4 x T1)

24

12,000 ft.

0.5 mm

3.7 km

6.144 Mbps (4 x T1)

26

9,000 ft.

0.4 mm

2.7 km

Source: DSL Forum

Since the original ADSL standards were released in 1999, development efforts have continued and several enhanced versions have been released in the forms of ADSL2 and ADSL2+. See also ANSI, asymmetric, AWG, bandwidth, Bellcore, broadband, channel, CO, crosstalk, Data Link Layer, DMT, downstream, DSL

Forum, E-1, FEXT, frequency band, FTTC, FTTN, FTTP, G Series, headend, ITU-T, local loop, metric gauge, narrowband, NEXT, OFDM, OSI Reference Model, Physical Layer, POTS, QAM, RBOC, symmetric, T1, transmission rate, upstream, UTP, voice grade, and xDSL.

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