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View Full Version : Explain line speeds please



mrplane
01-04-2010, 06:35 PM
Hi, i,m just curious to know what the difference is between line rate, attainable line rate and the speed i get when i do a speedtest?I,m finally on adsl2 .
Current DSL line status is displayed as the below.

Line Mode ADSL2+ Line State Show Time
Line Power State L0 Line Up Time 06:03:36:19
Line Coding Trellis On Line Up Count 1

Statistics Downstream Upstream
Line Rate 17174 Kbps 168 Kbps
Attainable Line Rate 21812 Kbps 736 Kbps
Noise Margin 12.3 dB 40.2 dB
Line Attenuation 11.5 dB 5.5 dB
Output Power 0.0 dBm 12.4 dBm


When i do a speedtest i get 2400kbps download and 140kbps up, during the day my speed is alot faster, around 5500kbps. Thanks all

pctek
02-04-2010, 08:17 AM
Line rate is what you personally from point to point can achieve. In theory.
Attainable line rate is what the max ADSL speed your provider gives you is capable of getting. In theory.
The speedtest is what you are getting in the real world.
Because there are a lot of factors that affect it, backhaul, peering, traffic, servers at the other end etc.