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[Privatepyle]

Hi all I was looking in my sky router stats and under the heading line attenuation it has a downstream D1, D2 & D3 and an upstream U0, U1 & U2 measured in dB.

Would anybody be able to tell me what these mean?

I do not have any issues on my line at all but was just intrigued as to what it is.

Cheers

[Alex Atkin UK]

VDSL frequencies are split into groups over the radio spectrum used.  This way as the lines get longer, you don't lose ALL one direction making the connection unusable.

The loss in each group is averaged, which is what that is reporting.

[kitz]

See What is attenuation?

With VDSL the tones are split into different frequency band groupings.  - See VDSL2 Tones in use.   

[Privatepyle]

Brilliant, thanks for the responses, that makes sense.