Thanks Weaver & Burakkucat for the responses & thanks for the welcome...
Yes it is TT. I'm not that well up on internet stuff & modems so forgive me if I sound a bit vague at times. I am learning though..
The modem doesn't appear to report the FEC errors or CRC's in the xDSL part unless they're called something else. I did a soft reset of the modem at 23.26 to see if the modem had got 'stuck' & wasn't picking any errors up. There wasn't any ES an hour later.
I'm up now & have just checked the modem stats which only go from 00.30 this morning & this is what it's saying:
Super Frames 1556563 1406425
Super Frame Errors 23 1
RS Words 202353181 4259735
RS Correctable Errors 624 3
RS Uncorrectable Errors 1729 0
After trying to find out for about 4/5 days what time these night times ES were occurring & getting nowhere, I resorted to downloading DSLstats yesterday, although I haven't left it running overnight yet..
This morning, after days of getting about 200 ES overnight, there's only been 12 ES since 00.30 last night.
It was only when I got NOW Tv to watch Game of Thrones did my problems start. My speed had slowed to a pitiful 1595 & of course, I couldn't watch GoT on the TV. Watching it huddled over an iPad didn't quite have the same enjoyment about it..
I just don't seem to getting anywhere with TT. I'm not on contract with TT as I was a transferred from Virgin when they decided they didn't want ADSL customers anymore. I just want them to help regards getting my speed back to where it was. I wasn't one for checking stats all the time & as long as I could do what I wanted to do, I was happy. Speed got a bit slow at times but a hard reset of the modem usually sorted that out. As I'm not on contract with TT, I don't know whether their 'guaranteed 2.6mb download' speed applies. If it does, I'm up the creek without a paddle..
The modem has been connected to the test socket since the 20th May as the extension where the modem was originally connected, was proving unreliable, which is why my speed had reduced. Now everything is stable on the test socket, TT don't seem the slightest bit interested about the speed I was getting, nor are they interested in helping me get that speed back. The last recorded measurement of the speed I used to get was July '16 & that was 7.18mb over wireless on an iPhone 4s. So, apart from a line rate of 7774 for about 1 & half hours on the 15th June after the engineer had been, my speed has slowly decreased to 4059..
Any views on why my modem is reporting the SNR as 5dB when I've reduced it to 3dB? With congestion etc, could I have lost 3mb since July '16?
Unfortunately my cabinet is full or I'd have been off to another ISP on fibre. I'm now looking at moving onto another ISP for broadband with the hope of upgrading to fibre with them when there's space in the cabinet. I can't believe I've been stupid enough to pay £24 a month for this & that doesn't even include line rental. What I don't want to do, is take a fault with me & have to start over again with another ISP.
Apologies for the long post