How it adapts to poor line characteristics? Seems that ADSL uses multiple frequency bins, probing each for signal-to-noise ratio and choosing parameters accordi

How it adapts to poor line characteristics? Seems that ADSL uses multiple frequency bins, probing each for signal-to-noise ratio and choosing parameters accordingly, because different lines have different attenuation/noise on different frequency ranges. This article might be helpful: http://www.kitz.co.uk/adsl/adsl_technology.htm http://www.kitz.co.uk/adsl/adsl_technology.htm