Anything upstream can quite often dependant upon local wiring conditions* However Im surprised that 1.5m nearer to the socket made that much difference, unless the cable was better quality.
*Master Socket, internal wiring or even telephony near to demarcation point
--------
However, when comparing the 2 stats, I notice that the upstream receive power has increased from 1dB to 4.7dB. That is more likely to have something to do with the increased upstream rate. Not sure about the downstream.
So in part probably DSM (Dynamic Spectral Management) adjusting the power levels on your line.
There is absolutely _nothing_ you can do about DSM as its calculated by the DSLAM at the time of sync and tries to keep power levels within certain parameters depending upon local conditions and also such things as E-side distance and D-side distance. It involves some fairly complicated algorithms and various allowed parameters of spectral masks.. It's not unusual that if it decides to give you more upstream power then downstream goes down as a result - or vice versa, where people get a higher downstream sync, but their upstream sync goes down.
Please do not get hung up with DSM as spectral management is outside the scope of you being able to do anything much about and it may even change back to the previous power level. It's more complicated than DLM and at times mystifying why a spectral mask may change. Absolutely none of us here know which spectral masks as used on our own lines other than we can see what difference it makes to the shape of our upstream bit-loading in some of the lower tones. This kinda stuff is going to be way over the head of most people, so just count yourself lucky that
something has decided to push up your upstream power a tad.
Now leave the goddamn stats alone
----------------------
OLD STATS============================================================================
xDSL Training Status: Showtime
Mode: G.fast Annex A
Traffic Type: PTM Mode
Link Uptime: 0 day: 0 hour: 36 minutes
============================================================================
xDSL Port Details Upstream Downstream
Line Rate: 28.175 Mbps 160.251 Mbps
Actual Net Data Rate: 28.037 Mbps 159.891 Mbps
Trellis Coding: ON ON
SNR Margin: 3.2 dB 4.4 dB
Actual Delay: 0 ms 0 ms
Transmit Power: 4.0 dBm 0.0 dBm
Receive Power: 1.0 dBm 3.0 dBm
Actual INP: 540.0 symbols 550.0 symbols
Attainable Net Data Rate: 28.028 Mbps 186.263 Mbps
============================================================================
NEW STATS===========================================================================
xDSL Training Status: Showtime
Mode: G.fast Annex A
Traffic Type: PTM Mode
Link Uptime: 0 day: 0 hour: 23 minutes
============================================================================
xDSL Port Details Upstream Downstream
Line Rate: 30.153 Mbps 160.205 Mbps
Actual Net Data Rate: 30.005 Mbps 160.005 Mbps
Trellis Coding: ON ON
SNR Margin: 3.1 dB 9.1 dB
Actual Delay: 0 ms 0 ms
Transmit Power: 4.0 dBm 0.0 dBm
Receive Power: 4.7 dBm 3.0 dBm
Actual INP: 540.0 symbols 550.0 symbols
Attainable Net Data Rate: 31.668 Mbps 225.960 Mbps
============================================================================
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Topic: Goodbye Plusnet FTTC, Hello G.Fast from Unchained via TT Backhaul (Read 11069 times)