I did a re-sync this morning
(This is to try establish why my upstream sync having been capped at 440kbps and then uncapped by Plusnet is now appears to be still "capped" but at 888kbps instead with an upstream SNR margin of 15. This is all after a BB fault was cleared. Pre fault it free-sync'd at around 1180kbps at 6 margin. During the last 7 days continuous sync all upstream errror are zero - ideas anyone?)
Anyway.
I can confirm that the SNR/tone chart immediately on re-boot is exactly the same as my pre-power cut SNR/Tone chart in my initial post. All the dips and glitches are in exactly the same place of the same magnitude in SNR value. The tones used end at tone 450 as does the bit loading.
I'd think the original "power on" SNR chart I dragged up for comparison must have also been taken immediately after a re-boot. It would have been several weeks ago.
This is how I expected it to be from my memory - the tones always end at around 450 and everything is zero thereafter up to 511.
(As I said this before this is an interleaved line)
