Comparing the before and after stats (attached), I noticed a slight change in the Discovery Phase Band Plan. The uppermost tone in the D3 band has changed from 3959 to 3971. (My line is too long to use the D3 band, so there was no change to the Medley Phase tones.) Also the DSLAM has now started reporting the US QLN, HLog and SNR to the modem - I had understood only ECI DSLAMs supported this?
That's an interesting observation, especially the reporting of US data.
I too can't use the D3 band due to line length, but I'm quite interested in seeing my US data.
As you mentioned, that was NEVER available from a Huawei DSLAM previously.
I haven't read of anyone else seeing this band plan change, yet & mine is still showing 3959 as the highest available tone.
Your U2 QLN graph looks 'interestingly' & disproportionally 'noisy'.
Hence nothing showing in the Hlog or SNR graphs.
I'd be interested to see the Plink log for those graphs, just in case I have missed anything in plotting the data US when obtained via a Huawei DSLAM.
Could you possibly zip it & post it here?
Just for curiosity, do you know your line length from the cabinet?