What an excellent business plan!!

[#1]

Quote from: HPsauce

It's also interesting that since your Noise Margin dropped you've had a few (minor) errors whereas there were none before.

Well I am confused    pages are taking longer to load now, especially this site. I have reported it back to Plus on my open fault ticket, I have no idea what is going on, what to do etc.
Thanks for your help though HPsauce, be lost even more lost without this site and help I have received from you and Oldjim etc..

[#2]

Are we still using DMT to force the target SNR to 9dB?
If not and based on the above, it might be an idea?

[#3]

Not using DMT or forcing any noise margin to a set level, what would this achieve James? I am trying to identify that there is a problem and get a long term solution either from PN or BT, to resolve the issue.
adie:quote

[#4]

Do you have any issues with us getting BT to force the target noise margin to 9dB?
From what you've mentioned earlier today, your connection doesn't appear to be capable of giving a 6dB connection without errors, thus offering no improvement in sync speed.

[#5]

Quote from: Jameseh

Do you have any issues with us getting BT to force the target noise margin to 9dB?

Wouldn't that mask what has been causing problems?
We've spent ages here looking at this, including the wiring which has been "adjusted" quite recently. As has been said before it's time to leave things alone for a while and observe what happens.
Maybe Routerstats should be logging things in detail and continuously?

[#6]

I'm happy either way
T'was only a suggestion.

[#7]

Quote from: HPsauce

Quote from: Jameseh Do you have any issues with us getting BT to force the target noise margin to 9dB? Wouldn't that mask what has been causing problems? We've spent ages here looking at this, including the wiring which has been "adjusted" quite recently. As has been said before it's time to leave things alone for a while and observe what happens. Maybe Routerstats should be logging things in detail and continuously?

I am inclined to go with HPsauce on this to identify the problem once and for all. I have RS running and I can leave it on 24/7 if required and it will do any good. Otherwise the PC will close about 7pm until the following day. Noise graph attached

[#8]

We need to see noise and speed graphs together, though the shape of that one does not suggest a resync.
It does however look like what I suggested, something nasty being turned on for a while. 
My SNRM varies by up to 2dB over 24 hours so that variation isn't necessarily unusual. But several days of data would be more interesting.
Also, don't expect anyone to get excited, or even interested, in that amount of variation. BT's sytems are designed to deal with that automatically by raising your target SNRM. It's only symptoms like Catweazle's with 20dB variation that warrant investigation.

[#9]

Ok, I got a reply from Plus but all they want me to do is go around in circles again testing this and that. I have attached the reply, if anyone has time to read it and get back to me with any advice that would be great. Seems we are never going to resolve this. The nm is bouncing around between 5.9 and 7.8 then goes down to 6.4 now. 

[#10]

Yes, well what do you expect?
Your line isn't apparently that bad, and you've made some changes to the wiring yourself thought there are more you could do.
Time to see how it's behaving for a while......

[#11]

Hi guys thought I would check in with the lastest on this issue.
Tonight my speed dropped again as shown below with a BT Speed test.
Pages are slow to load and I have switched to Firefox which seemed to be faster then IE.
I have no idea what is going on but maybe someone has some clues. Once again any advice appreciated. Thanks
Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 4768 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 3000 kbps
    Actual IP throughput achieved during the test was - 915 kbps
This is the results on various dates.
2/3/09
Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 4768 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 3000 kbps
    Actual IP throughput achieved during the test was - 2617 kbps

26th Feb
Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 4128 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 3500 kbps
    Actual IP throughput achieved during the test was - 3191 kbps
24th Feb
Test1 comprises of Best Effort Test:  -provides background information.
    Your DSL connection rate: 4128 kbps(DOWN-STREAM),  448 kbps(UP-STREAM)
    IP profile for your line is - 3500 kbps
    Actual IP throughput achieved during the test was - 3049 kbps

[#12]

Hi Sunny, I was about to post here to see what the latest was, and comment of the Support response.
So let's deal with things chronologically.
I did't think the response was bad, in fact it was very informative overall, that said the agent may not have been aware of the testing that you'd been doing but the other point is the comment about the sync rate. With regard to all the suggested tweaks - very useful, you can do this later, but it will have absolutely no effect on your line problem. So I would suggest a response to the ticket along the following lines -
"Thankyou for your response, I am not a technical person but the tweaks you have suggested in the latter part of your response I will look at after the line problems are resolved.
The problems are intermittent, and seem to be related to spurious noise that appears on a sometimes regular, other times irregular basis. Tests have been carried out with different filters from the test socket and sockets around the house and there is no significant difference in performance, although some minor changes have been made to hopefully optimise performance. My connection is not syncing at a high/normal rate for this line which, if in good repair, should be capable of syncing at 6M or so with ease.
Further investigations are being carried out to try and determine the causes and the ticket will be updated when further information is available."
Even if you have already responded to the ticket, there is nothing to stop you responding further and you should ensure all the points I've covered are mentioned.
With regard to your latest stats and post, things actually seem potentially better - I will explain - but first, to save a bit of effort on your part, the most interesting things to see regularly are the Noise Margin graphs. The RS errors and CRC error plots are not very informative at the lower levels but may be more interesting if there is dramtic changes in SNRM. The lists of SNRM variation from the pdf of the log file is difficult to interpret at a glance, the graph is more helpful.
The sync plot in conjuction with the SNRM could be useful IF there is a change in sync speed, as would be the bits/tone plot when there's a change in sync speed.
Your current figures show your sync speed at the highest I can recall for a while, so your profile and throughput will rise if you don't sync at a slower speed and I note your SNRM is in the 6dB ballpark.
I think a recap and clarification would be a good idea so you've got a better grasp of what is happening.
Noise margin - when this changes suddenly or not, it will not directly affect your throughput. It may cause a lot of errors which can momentarily affect throughput or at worst a loss of sync, which might result in lower sync. When/if  you see sudden and dramatic changes in SNRM, immediately listen to your phone line to see if you can hear any crackling or other intermittent noises, or maybe did you just get an incoming call, did anyone make any outgoing call.
Note the time, has anything been switched on either in the house, or maybe outside eg. street light, anything in the property next door perhaps (don't know how far away they may be, but if on the same mains phase it could have an effect - if rural - a local farm switching on machinery, milking parlour equipment etc etc.) all worth thinking about. Can you pickup any interference on the radio or even see it on TV especially digital - picture breaking into blocks, sound dips.
Your throughput speed, the thing that is of ultimate concern, can vary at anytime of day and is likely to be slowest during peak times. Your maximum achievable throughput speed is dependant on your profile, which in turn is dependant on your sync speed. Your sync speed will depend upon the amount of noise on your line at the time the sync/boot occurs & the target SNRM.
I wouldn't worry about using the BT speedtest very often, it can be temperamental to run, you have to wait 3 hours between tests and has seemed to have given a variety of people erroneous figures of late.
If you want to check your throughput speed try http://www.mybroadbandspeed.co.uk/ . You can repeat test with that as much as you want. If you do not delete your cookies, it maintains a history and you can plot graphs etc. There's also http://www.thinkbroadband.com/speedtest.html both are generally reputable.
(Example I've just acheived a pathetic 1.5M download from thinkbroadband, whereas at an off-peak time I would expect 5- 5.5M).
Looking at your recent figures between the 26th Feb and 2nd March, you've had a lower sync speed as your profile has dropped from 3500 to 3000. If you can maintain that current sync speed your profile will go upto 4000.
When you want to check your current profile, check at the member centre https://portal.plus.net/my.html?action=data_transfer_speed ; (login required). Remember it will take possibly 3 to 5 days for your BT profile to go back up, but it can go down in 75 minutes! The PN one may take 12hrs to catch up BT. If you think there is a serious discrepancy between your sync speed and PN profile after several days, then run the BT speedtest.
Hope that helps to understand things a bit more.
Post back some SNRM plots, a typical evening one, and any that have extreme events along with the error plots if there is a correlation. If you can, and are happy to, keep RouterStats logging.

[#13]

Well here we are again and I see no end in sight, I think I might as well give up. 
Latest results after seeing my pages take so long to load this morning, even after a reboot of the modem, noise margin at 6.1 again falling from 12.8 yesterday.  My current speed according to the BT speedtester is Test1 comprises of Best Effort Test: -provides background information.
Your DSL connection rate: 4768 kbps(DOWN-STREAM), 448 kbps(UP-STREAM)
IP profile for your line is - 2500 kbps
Actual IP throughput achieved during the test was - 533 kbps
My line profile was actually higher last week, at least 3000. As I do not understand what is going on I think I might as well give up. Anyone got any thoughts on mobile internet services etc?   
Noise Margin:     6.1   dB
Connection Rate:  4768  Kbps
Line Attenuation: 44.0  dB
Power:            19.7  dBm
Max Rate:         5120  Kbps

SF:               204847
SF Errors:        0
Reed Solomon:     13929626
RS Corrected:     453252
RS Un-Corrected:  0
HEC:              0
Errored Seconds:  0
Severe ES:        0
Interleave Depth: 32
Another speed test with poor results http://www.mybroadbandspeed.co.uk/results/03195644.png
NOW LOOK at this result 15 minutes later. Another speed test 15 minutes later with 200% improvement, why is it so intermittent?
http://www.mybroadbandspeed.co.uk/results/03195768.png

[#14]

Can anyone explain what this means to me please?
I have now issued an order ( 1-QLXEHE ) to change both the contention of your service and also the VP you are connected, to help us rule both of these out as the cause of the problem. This will complete tomorrow.
You will know once this is done if you go into your router and your upstream goes upto 832. Please allow a couple of days for this to settle and if the problems are still the same, please let us know.

[#15]

It means you're being moved on to Max Premium:
- Higher upload speeds
- Improved prioritisation on the BT network
It might help.