ADSL Terms

SNR Margin (Signal to Noise Ratio Margin) (Check in-house cables)
7dB-10dB fair
11dB-20dB good
20dB-28dB very good
29dB and above: perfect

Attenuation (Check distance to Gateway)
20dB and below: perfect
20dB-30dB good
30dB-40dB fair
40dB-50dB bad
50dB-60dB very bad
60dB and above: connection problem

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