Speed still not recovered after a month
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Speed still not recovered after a month
06-01-2011 1:12 PM
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at one point. Eventually you reset my speed back up to 2.5M, but unfortunately I had to reboot my router shortly
afterwards which sent my speed back down to 2.3 M.
It has been stable at 2.3 for the past month, but despite my router saying that it could synch at 2.5 M, the speed has
not shifted from 2.3M. Yesterday we had a couple of mains power glitches which immediately dropped my speed to 2.2M,
which presmably will also not go back up again.
Once again I seem to be on the downward speed rachet. Next month I am due to have my electricity meter replaced which will
mean that I shall have to power down my router (a tp-link W8960N) and as it does not have an adsl disconnect command - unless someone knows better - and I know that this will also knock down my speed, never to return again.
I had hoped that all this would be sorted after my month of grief, so once again can you reset my speed to 2.5M and keep it there.
Otherwise I shall have to complain again in a month's time when my meter is replaced.
Re: Speed still not recovered after a month
06-01-2011 1:24 PM
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The change in your sync rate is due to your SNR creeping up slightly. This is normal for a line of your length. It was different when you were getting a much lower rate but at this time your line is working within acceptable limits. Indeed if you put your 63.5dB attenuation into this calculator, your sync of 2240k is way above what is predicted.
Jojo
Re: Speed still not recovered after a month
06-01-2011 1:40 PM
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You haven't addressed my problem of yesterday's power glitch - you can at least get me back to 2.3M.
With such a low speed any reduction causes a large percentage change.
Also what am I to do about next month's reboot? Do you know if removing the adsl interface from the router's config will
be treated as an uncontrolled disconnect?
Re: Speed still not recovered after a month
06-01-2011 6:44 PM
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Quote from: timedout With such a low speed any reduction causes a large percentage change.
You hit the nail on the head there. What seems like a tiny change does make a huge difference to users on relatively "slow" connections. I don't think this fact is usually appreciated.
I expect you're the same as me when you see users complaining that their 17000 connection has dropped to 15000. I just think if only.........
Re: Speed still not recovered after a month
06-01-2011 7:27 PM
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Re: Speed still not recovered after a month
07-01-2011 10:58 AM
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Of course they always say that it is an UPTO 8 Meg service, but if we all stood together and paid the proportion of our payment equal to the propotion of the speed we are actually given, they would soon fix things.
However, it is in plusnet's interest to keep us at as low a speed as possible, as then they do not have to upgrade their infrastructure. If we all had the speed we paid for the contention would be horrendous, so until UPTO is made illegal and we only pay for what we get there will be no incentive for plusnet to change.
Re: Speed still not recovered after a month
07-01-2011 1:52 PM
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Quote from: timedout The calculator can only give an estimate. So why does the router say it could use 2.5M?
You are quite right - Kitz's calculator only produces an estimate. However since you aren't connected at 2.5Mbps your router is also producing an estimate. It seems like the DLM at the exchange doesn't agree.
Quote from: timedout Also what am I to do about next month's reboot? Do you know if removing the adsl interface from the router's config will
be treated as an uncontrolled disconnect?
My guess is that taking that action would be seen as an abnormal disconnect since it's not something that would be expected in normal operation. The alternative of disconnecting from Plusnet then turning the router off beforehand, and leaving it off for at least an hour is likely to be treated less severely. However, since power failures cause problems for you why not invest in a UPS to bypass their effect?
Re: Speed still not recovered after a month
13-01-2011 11:52 AM
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Once again could I ask that it be put back up - I raised a fault at the time, but nothing has happened except they sent me a report which also shows that the line is still capable of a higher speed.
Re: Speed still not recovered after a month
13-01-2011 11:58 AM
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Running routerstats would allow you to monitor the noise margin for a day and see when the best time to do the reboot would be.
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
Re: Speed still not recovered after a month
13-01-2011 3:37 PM
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Quote from: Joanne The change in your sync rate is due to your SNR creeping up slightly. This is normal for a line of your length. It was different when you were getting a much lower rate but at this time your line is working within acceptable limits. Indeed if you put your 63.5dB attenuation into this calculator, your sync of 2240k is way above what is predicted.
I'm sorry, but I can only reiterate what I've said before.
Jojo
Re: Speed still not recovered after a month
13-01-2011 4:46 PM
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I will remind you that I am paying for 8M.......
Re: Speed still not recovered after a month
13-01-2011 5:12 PM
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Quote I will remind you that I am paying for 8M
We don't base our charges on the speed of the service, that's why we have customers on up to 8Mb, up to 20Mb all paying the same price. The products are sold on the usage and traffic management profiles of the account.
Re: Speed still not recovered after a month
13-01-2011 6:17 PM
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Quote from: timedout The change of speed had nothing to do with the SNR
It has absolutely everything to do with the SNR!
When your router syncs with the exchange, the faster it syncs the lower the noise margin. The exchange has a target noise margin set for each line which it has determined is appropriate to give a stable line with few errors; each time you sync your router and the exchange negotiate the fastest speed possible while keeping the noise margin at or above the target. The targets are in steps of 3 where 6 is the lowest (and hence gives the fastest possible speed).
Getting anything more out of your line is totally down to you. You could try the occasional resync when the noise margin is well above the target (you check what your target is by looking at the noise margin immediately after a resync); it should then resync at the target with hopefully a higher sync. You could also try different routers to see if any give you a better sync, but as you are already well above the estimate for your attenuation I think that';s unlikely to succeed.
You must also accept that line conditions, and hence the noise margin vary over time. One thing you can watch out for is if there is any background noise on the line, if that's the case it needs to be reported as a voice fault. Background noise tends to increase after sunset, which is why a 10am to 3pm sync is often advised. It will also increase if dampness gets in to the joints on the line, and if you've had the weather like we have had recently there's a very obvious reason why that may have happened. It wouldn't surprise me if come May or June you were back up to the higher speeds and then next winter they fell back to your current speeds.
HTH
Oh, and by the way, what you actually pay for is a connection at the fastest speed your line and the exchange will accept (that could be anything from around 512K to 24M),a data transfer allowance and the traffic prioritisation.
jelv (a.k.a Spoon Whittler) Why I have left Plusnet (warning: long post!) Broadband: Andrews & Arnold Home::1 (FTTC 80/20) Line rental: Pulse 8 Home Line Rental (£14.40/month) Mobile: iD mobile (£4/month) |
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