Hi - Thanks for replies, Kitz & jOhn. The internet dropped connection last night & DSLstats threw a wobbler sometime in the night, When I checked it this morning, it came up with a floating decimal point error & stopped recording. I had to close it & re-start it.
Anyway, the DLM kicked in last night & I'm back to interleaving on at 793 on the DS. SNR is a 6.3dB. Speed has dropped to 34,995 with an attainable of 41,727. My errors prior to DSLstats having a dicky fit were.
Average error rates for 21 Sep 2019
CRC erors per hour: 477 Down, 1.45 Up
FEC erors per hour: 0 Down, 2.17 Up
HEC erors per hour: 180 Down, 0 Up
ES per hour: 32.7 Down, 148 Up
SES per hour: 2.53 Down, 0.48 Up
Total ES in the day: 2169 Down, 2473 Up
Looking at the log, it stopping recording at 23.06 so I guess those figures aren't too far out. I've been on VDSL since the 22nd of Aug & even now, my line isn't stable in that, it's unpredictable. They've banded me on a 40/10 despite my speeds being 52.1 & 50.3 on the DSL checker. Prior to the L & S there were 54.8 & 52.9. I have this issue which came with me from TalkTalk in that the noise drops at night sometimes so much that the SNR goes up giving me an attainable speed of 45/46Mb. When I first went onto VDSL, they put me on ADSL in error (6th Aug) & I didn't go over to VDSL until the 22nd. They addressed the drops & noise whilst I was on ADSL, hence the L & S & I lost a couple of MB on the DSL Checker. No big deal, it's just the unpredictable line means the DLM is up & down like a yo yo. I just wish the OR engineer had said there was no point in sorting this line out until I was on VDSL.
Even though I'm above the guaranteed speed (a paltry 25mb), is it worth reporting this fluctuating SNR & will they do anything about it? How do they arrive at the guaranteed speed? I'm about 300m from the cabinet. No idea if my speed will go back to the 39Mb I had previously or will this constant up & down SNR end up with me being banded at my current speed of 35Mb. Why also, is somebody expected to pay the same if they're banded at 40/10 & somebody on the same cabinet roughly the same distance can get 55/10. I know I sound like a spoiled brat over a few MB's but this unpredictable line is a tad frustrating. OR, instead of improving my line, have made it worse, in that, I have the same issues & I've lost speed at the top end. BT should at least take ownership of that..