noise margin and attenuation help

Modem Status
Connection Status Connected
Us Rate (Kbps) 128
Ds Rate (Kbps) 384
US Margin 26
DS Margin 27
Trained Modulation ADSL_G.dmt
LOS Errors 0
DS Line Attenuation 21
US Line Attenuation 11
Peak Cell Rate 301 cells per sec
CRC Rx Fast 0
CRC Tx Fast 1
CRC Rx Interleaved 0
CRC Tx Interleaved 0
Path Mode Fast Path


DSL Statistics
Near End F4 Loop Back Count 0
Near End F5 Loop Back Count 0

any idea what this means?
 
@jeppe777: The figures you are interested in are the US margin (upstream noise margin), DS margin (downstream noise margin), US attenuation and DS attenuation. Your values seem to be very good (refer to the table of values on page 1 of this thread). You can use your downstream attenuation value to get a rough estimate of your distance from the exchange. Fremnet gives the following values: 1.521km from exchange (i.e. 21/13.81), Max ADSL1 speed of 8000kbits/sec, Max ADSL2 speed of 19897kbits/sec.

http://fremnet.net/article/216/adsl-theoretical-speed-calculator
 
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