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Destroyer
19/07/2009, 11:22
Looking at me SNR is this right? Upstream has been sitting steady at 6db for months, but downstream is jumping up and down. My upstream is faster than downstream?? I notice other peoples seems to be the other way about?:s



Downstream Upstream
Connection Speed 571 kbps 1015 kbps
Line Attenuation 45 db 15 db
Noise Margin 23 db 6 db
tboorman
19/07/2009, 12:20
That doesn't look right. Have you raised a ticket about it?
Destroyer
19/07/2009, 12:29
That doesn't look right. Have you raised a ticket about it?


No not yet, maybe i should then:o
tboorman
19/07/2009, 15:12
Yep, I would if I was you.
Destroyer
22/07/2009, 07:44
Raised a ticket, also going to change my router and see if that helps. Anyone know why my noise is the way it is?
woZa
26/07/2009, 11:11
Don't know why the SNR is like that but I am having the same issue, for the last 3 months. SNR at 23dB. Sync and throughput speeds right down.

Have had a ticket going for 3 months but no resolution yet...
Destroyer
28/07/2009, 12:23
Don't know why the SNR is like that but I am having the same issue, for the last 3 months. SNR at 23dB. Sync and throughput speeds right down.

Have had a ticket going for 3 months but no resolution yet...

So many people rave about the DG834GT i decided to splash out and buy one. I'm doubled glad i did, just seen my DS noise margin drop from a constant high 20's down to a meagre 10, UP is still sitting pretty at 6. Maybe worth an investment?
thraxas
28/07/2009, 12:48
I had the same as well, Had the profile reset, went down to SNR of 6dB, connected at 7150, but with 3 days, it had gone back to 22-23 and profile of 2500.

Been told if it is a fault with my system a charge of £160. Happened with the 24mn WBC upgrade.

Upgrade, 1/3 of the speed I got 3 years ago is a great upgrade.
penguin
28/07/2009, 22:28
It is becoming clear to me that BT have deliberately configured the DLM to screw up the SNR to the max at the slightest excuse -- Far more than can ever be required to maintain good stability. The only logical explanation is that they do this to cut down their total throughput. Scandalous.

For the moment, I am scared to cough in the vicinity of my router.
paulbacon
28/07/2009, 23:22
I had 2 disconnects in one night (2am and 6am). Both lost sync and then reconnected, but that was enough for BT to put my Target Margin up.
penguin
29/07/2009, 00:22
How long did it take to come down again, if it ever did?

It's ridiculous, I know people on other networks who switch off their routers at night or when they go out. If we did this BT would have us on something worse than dial-up.
paulbacon
29/07/2009, 16:20
Its only been 7 days since then and nothing so far. Last time it was around 2 week

I was under the impression that it took around 10 loss of sync events in an hour before the margin was increased. Clearly not
Catman
29/07/2009, 16:42
Although I've switched to LLU, when I was on Enta I always turned the PC off at night and on and off during the day and it never altered my sync, speeds were always the same.
paulbacon
29/07/2009, 17:16
It wont if you're using a router as its always on
penguin
30/07/2009, 00:18
Unless you switch it off.
Catman
30/07/2009, 07:24
It wont if you're using a router as its always on
When I said switch off pc that was the router as well at night
woZa
30/07/2009, 21:00
So many people rave about the DG834GT i decided to splash out and buy one. I'm doubled glad i did, just seen my DS noise margin drop from a constant high 20's down to a meagre 10, UP is still sitting pretty at 6. Maybe worth an investment?

Just bought the Netgear DM111 - Don't need the wireless. It's not my equipment I am 99% sure.

Guess it's time to get BT out.
Soreen
30/07/2009, 21:06
I have been waiting weeks for my SNR to improve but it won't - got no idea why it went from being good to rubbish and I'm too idle to kick up a fuss.

it wont if you're using a router as its always on


unless you switch it off.

:D :D :D

That made me guffaw!
penguin
30/07/2009, 21:08
That makes me very happy. :)
Soreen
30/07/2009, 21:16
This is what I am faced with, 2wire 2700HGV (BT business) router:

http://i27.tinypic.com/2vtwnky.gif
Dae
30/07/2009, 22:12
You should see the SNR fluctuation on my new line, 23dB max - 2.8dB min ... several times a day.
Even the upstream margin is fluctuating -
28dB and I get 8128kbit/s, 24dB and i get less than 6200kbit/s (often a lot less)

Hence the current poor state of my stats:

http://img32.imageshack.us/img32/5660/newlinestats.jpg

Of course BTW have 'made some changes to the line to fix the problem' and have requested that I wait 3 working days to see if the problems have been resolved.

However most BT fault reports are closed automatically if there has been no follow up within 5 actual days.

Looks like i'll be opening a new fault report on Tuesday :rolleyes:

:edit:

And check the new stats

http://img352.imageshack.us/img352/4004/newlinestats28db.jpg

A 28.4dB DS noise margin!?

I don't think I like the changes BT have made to my line!
Destroyer
31/07/2009, 18:27
ADSL Link Downstream Upstream
Connection Speed 572 kbps 875 kbps
Line Attenuation 48.0 db 31.7 db
Noise Margin 11.4 db 6.4 db

SNR has dropped from 31 to 11 with a new netgear GT, just waiting (and hoping) for me line to stabilize and speed to pick up.
FastShow
31/07/2009, 21:49
And check the new stats

http://img352.imageshack.us/img352/4004/newlinestats28db.jpg

A 28.4dB DS noise margin!?

I don't think I like the changes BT have made to my line!
A 24dB noise margin is GOOD news. If you disconnect and resync you'll get a huge boost in sync speed.
paulbacon
01/08/2009, 08:31
ADSL Link Downstream Upstream
Connection Speed 572 kbps 875 kbps
Line Attenuation 48.0 db 31.7 db
Noise Margin 11.4 db 6.4 db

SNR has dropped from 31 to 11 with a new netgear GT, just waiting (and hoping) for me line to stabilize and speed to pick up.

I have a netgear DG834Gv5 but my margin is only measured in 0.5db increments. So i would either get 11db or 11.5db. Is that just down to each specific router?
Destroyer
01/08/2009, 18:54
I have a netgear DG834Gv5 but my margin is only measured in 0.5db increments. So i would either get 11db or 11.5db. Is that just down to each specific router?

I would say so - i had a netgear DG834Gv3 and it only measured whole number, no points!
Dae
01/08/2009, 18:54
A 24dB noise margin is GOOD news. If you disconnect and resync you'll get a huge boost in sync speed.

Unfortunately that is the upstream margin, and my US sync is already at the maximum for my package - although whenever my US margin has been at 28dB I have had full DS sync, but I'm thinking that is just a coincidence.

The DS margin was the one I was more concerned with as it was fluctuating wildly during the last few days (2.8-28.4dB), It has now settled at a much better 15 dB (+/-0.1 dB) but there has been no increase in DS sync despite a re-connection late at night and early in the morning.

Here, for comparison, are some previous stats when I did have full sync.
Although the SNR margins and DS sync were up and down a fair bit.

29/07/09

@07:32
ADSL Link Downstream Upstream
Connection Speed 8128 kbps 448 kbps
Line Attenuation 23.0 db 16.0 db
Noise Margin 15.1 db 28.0 db

30/07/09

@11:23
ADSL Link Downstream Upstream
Connection Speed 8128 kbps 448 kbps
Line Attenuation 23.0 db 16.0 db
Noise Margin 14.8 db 28.0 db