My stats show a short line, hitting the profile cap for the product in use, as does the OP’s opening post.

I cannot post VDSL stats, as I don’t have that service on my line. There are enough similarities between the ways VDSL and G.Fast work to make comparisons.

The DSLAM in the cabinet backed off transmit power to save electricity and increase longevity most likely. No point in wasting energy and driving components harder pushing the SNR any higher when the signal is already reaching you at quadruple the bare minimum.

In reply to a post by XGS_Is_On:

The DSLAM in the cabinet backed off transmit power to save electricity and increase longevity most likely. No point in wasting energy and driving components harder pushing the SNR any higher when the signal is already reaching you at quadruple the bare minimum.

That makes sense.
Dropping the TX power from the DSLAM would also help reduce crosstalk where there are many lines bundled together.
I note that my upstream stats do show a higher margin which I assume is because the power can be left higher at the modem end.

Current Rate (kbps) 19999/79999
Max Rate (kbps) 31033/100775
SNR Margin (dB) 13.2/6
Line Attenuation (dB) 6.7/4.5
Errors (pkts) 64/0

Just got some more stats from the telnet interface...

dataPath=Fast
interleaveDepth=0
lineNumber=0
upstreamCurrRate=19999
downstreamCurrRate=79999
upstreamMaxRate=31040
downstreamMaxRate=100575
upstreamNoiseMargin=132
downstreamNoiseMargin=60
upstreamAttenuation=67
downstreamAttenuation=45
upstreamPower=-52
downstreamPower=117

I assume the stats in dB have a decimal place so upstream power is -5.2dB and downstream 11.7dB

Close: the unit is decibel-milliwatts for power, dB is a relative measure only while power is absolute 😊

Just to be clear, OP must be right about the decimal point.

117dBm would be over 500GW, nearly half the capacity of the EU. 11.7dBm is a more reasonable 15mW.

I think you mean half of 1GW
30dBm =1W
and each additional 30 is a factor of 1000
so 60, 90, 120 would correspond to k, M, G respectively?

(117dBm is 3dBm below 1GW)

For things like attenuation, it can be in dB without needing to refer to any absolute value,
since 0dB would be a reference for the full strength of the signal where it was transmitted,
and -20dB would be an attenuation of 20dB or equivalently that it was received at 1% of the transmitted level.

Edited by prlzx (Sat 11-Oct-25 13:03:22)

In reply to a post by Eeeps:

Just got some more stats from the telnet interface...

dataPath=Fast
interleaveDepth=0
lineNumber=0
upstreamCurrRate=19999
downstreamCurrRate=79999
upstreamMaxRate=31040
downstreamMaxRate=100575
upstreamNoiseMargin=132
downstreamNoiseMargin=60
upstreamAttenuation=67
downstreamAttenuation=45
upstreamPower=-52
downstreamPower=117

I assume the stats in dB have a decimal place so upstream power is -5.2dB and downstream 11.7dB

No, they are probably in centiBels - cB

You are right. 500MW

G.fast is faster than 80/20 or supposed to be.

So I tihnk the OP is asking why his line is only running at 80/20. Why not 100/20 or 90/20 etc