How to test an WR44V2 step by step.
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Next connect the unit that is to be tested to the line. Collect all the same parameters as above. Please
note that every modem has slightly different characteristics and the speed and noise margin can vary
between individual units.
Deciding a “good modem” from a “bad modem” is somewhat down to judgment as a rule of thumb
1)
If the modem does not train up at all
OR
2)
If the downstream or upstream speed is half that of the “Golden DSL testing unit” (and this is
repeatable)
AND
3)
If the golden unit is reconnected and it trains up at the usual speed and noise margin for the
golden unit
Then there is cause for concern.
Please check the ADSL chipset firmware version of the golden router and the suspected golden router
are the same. (Firmware Version: SW 1.11 in above example). If not take steps to ensure they are the
same and re-test.
If there is still a problem, please include the output of the ADSLST command from the suspected
broken router and the output of the ADSLST command from the golden test router in the RMA
request. (You must test the golden router at around the same time as the suspected broken router to
ensure that the characteristics of the ADSL line have not recently changed.)
