Any problems tonight?

[Niall]

Yeah. Since the problems started, when I pick up the phone the upstream noise margin drops. The downstream is 6.6 today, and the line isn't dropping anymore since they replaced that dside link, and the current downstream is the max of what I've seen on this line. I just find it odd that the upstream speed is stuck at 888 when that's always been better than it should be (around 1.1mb).

I'm just worried there are still problems waiting to surface. Normally during retraining the line retrains every 3 days in my experience, so I'll wait to see if anything changes. That being said, before when I downloaded something at the max of the line it'd retrain over night or even drop an retrain, but last night I randomly downloaded a few well seeded torrents and maxed out the line with seemingly no ill effects as of yet.

Guess it's a waiting game

[Rik]

Have you swapped filters, just to eliminate that as a possibility, Niall, phone as well, ideally.

[Niall]

Oh, the problem with my mums PC is the bios forgetting the date, which apparently knackers certificates. Set the date and all updates downloaded, and it was able to access certain m$ sites again

[Niall]

Have you swapped filters, just to eliminate that as a possibility, Niall, phone as well, ideally.

Yeah I've gone through all that before when I had issues first time round

[Rik]

But have you repeated it?

[Niall]

Christ, I just swapped filters and my downstream nm dropped to 6.1 and the upstream went up to 13db!

I'll try a third filter for giggles :p

I forgot to mention I've unplugged the phone and that makes no difference to up or downstream noise margins.

[Niall]

Okay, adsl nation faceplate instead of either adsl nation filters = 5.9db nm d/stream and u/stream 11.4 now. Still no phone connected with those figures. Connecting phone each time on all three filters makes no difference at all, so the phone isn't an issue.

[Rik]

But it sounds like you may have a duff first filter, which is a start.

[Niall]

Depends on your point of view really. First filter had a low noise margin on upstream (well, 2 lower) and these others have slightly lower downstream but higher upstream noise margin.

I wouldn't really consider a 0.5db change much of an issue really.

[Rik]

So you haven't tried the phone when changing? Be careful not to make too many changes, btw, you'll be getting near triggering DLM.

[Niall]

I've just noticed that the attn has changed fro 17 to 16.8 (up) for the first time ever. Dunno what that means but hey ho

I'm not touching it any more. It's all within a db when filters are swapped so there's nothing I can do. I dunno why I tried really as I've already ruled out all my equipment months ago.

[Rik]

It means that you've probably got a different group of frequencies picked up at the last resync.

[Niall]

Think I'll go back to lying in bed, playing with my ukulele, and no it's nit a metaphor

[Simon]

Whatever made you think we might think it was?   

[gyruss]

argh, and i was thinking you were totally fixed now,    that hiss you can hear on quiet line is still of note though, my quiet line test is totally silent these days, and before i had horrendous noise.

[Niall]

I'm not actually having issues yet, and the noise margin downstream has lowered slowly since I last mentioned it, to 5.8db. Before when there were problems, if the nm went up, it stayed there. Hopefully this is a good sign, plus I've not had any line drops, sync issues or anything sucky since they dug up my garden. It was looking like there might be a problem but maybe not.

[lozcart]

It would seem your noise margin at sync is currently set to 6.0, if this value is shown to increase by the router then it is picking up less noise on the line, if it is showing a decrease as in your case that means more noise on the line.

In saying that a 0.2 drop in value especially in the evening is fine and would not cause any problems.

[Niall]

It's the upstream noise that I find odd. Why would it be so high for upstream, when downstream is much lower? I've noticed from a few people posting recently that they have high upstream noise margins too, but mine was always half of what it is now. It's a bit odd that I've been stuck on 888 up throughout all my problems, and now they're gone I still have that upstream speed, when the downstream has recovered.

It seems no one knows this either as I can't find a reply anywhere about this!

[lozcart]

I'm not sure Niall how the upstream margin is set, someone may know if it is dynamic or set by BT like the downstream margin. If its any help mine is 8.0db and 936kbs.

[Niall]

I'm not sure Niall how the upstream margin is set, someone may know if it is dynamic or set by BT like the downstream margin. If its any help mine is 8.0db and 936kbs.

Well that does seem to point towards the upstream noise lowering the speed as mine is around 11.2 at the mo. I'm just baffled why as the line is now better than it was, so should have improved if anything. The other thing is when I pick up the phone, the noise margin drops massively, in fact it almost halves. I'm baffled!

Maybe if I leave my phone off the hook forever, the speed will increase

[Rik]

And you won't get any nuisance calls.

[Niall]

Got up this morning and downstream noise margin was 9.9 (line dropped at 6am apparently) and I've lost 2mb in speed. No idea why 6am but I have noticed resyncs seemed to happen at this time before.

I hope this improves, as this is what it was doing before. It dropped every two to three days until it was cack again

[.Griff.]

Got up this morning and downstream noise margin was 9.9 (line dropped at 6am apparently) and I've lost 2mb in speed. No idea why 6am but I have noticed resyncs seemed to happen at this time before.

I hope this improves, as this is what it was doing before. It dropped every two to three days until it was cack again

Is there any significance of 6am? Your heating doesn't come on at that time does it?

[Niall]

Nope, there's no reason I can fathom for this. It just seems to be the time things go pear shaped, or resync. I know there are builders working on a house across the main road from the cabinet. I've briefly wondered if they have a generator that could be causing it, but this was going on before they were there, so I think it just happens to be the time my line resyncs

[Rik]

Possibly, just possibly, that's the time when DLM makes changes. For me, it tends to be about 8:30.