I thought it had been established ages ago that the reason why you arent getting anymore - nor will you get- speeds much higher than 500 kbps - is because your IP profile is set at 500kbps.
Yes. Remember it's gone one stage further, and the line sync has been reduced to 576/288 by the DLM as it's been classed as a bad line.
Broadband1, I think there has been enough messing about here. This is going round in circles, and is starting to waste people's time who have been good enough to spend a lot of time try and help you out.
For everyone's benefit, and for the last time, I will summarise the fault up to now, and then give a detailed explanation of what you need to do.
Summary- ADSL Max line - originally syncing at 6-7Mbps.
- Line developed a fault causing attenuation to fluctuate
- DLM eventually drops SYNC speed down to 576/288kbps
- Don't know whether line is fixed or not, but stats posted Feb 22nd look promising
Detailed Explanation - Broadband1, please take the time to read this in full
Your line was initially good, as you say, it was originally syncing at around 6-7Mbps.
Due to a fault which I don't know the reason for, which meant your attenuation was fluctuating badly, the DLM has flagged the line as a bad line, and
DLM has restricted the sync to a FIXED 576/288 connection.
The original fault may have now been fixed, it may not. I can't say, since I haven't seen any line stats since Feb 22nd. Those stats at the beginning of this post looked promising (30.5dB downstream SNR at 576kbps sync)
So, if the attenuation is now stable (or just varies by 1dB or 2dB at a push), and the SNR does not drop too much during the course of the day, then that's a good start, and indicates that the line may be ok now.
But if it isn't stable, you need to get the ISP to get the line sorted out before you can even begin to think about speed tests.
So, when,
AND ONLY WHEN, the line is stable, your next course of action is to try and get your ISP to reset the DLM and put the line back into ADSL Max training.
I will repeat what I said to you ages ago... there is nothing more we can help with on this forum, at least until your sync speed rises to more than 576/288. By all means keep us informed of your progress with BT, but don't keep asking what to do as several of us have told you countless times what you need to say to them.
Here's what I would say to BT in your situation:
"My line sync speed is stuck at a fixed 512k, because my upstream is 288kbps.
"It used to be much higher, but there was a problem with my line which now seems to be ok. However I am now stuck with a 512k fixed speed connection because of the DLM."
"I have been using the master test socket and the line is totally stable, but my sync speed has not increased despite being promised that it would"
"Please will you reset the DLM for my line and put my line back into training mode"
If you get no luck with BT one day, then phone them again the next day... and phone them every day, until you get through to someone who will actually do something for you. Yes I know it's a pain to keep ringing them and getting nowhere, and I agree, you shouldn't have to. But unfortunately you do, if you want your problem sorting out.
But, whether your line is OK now or not, either way,
while you are still syncing at 576/288, there is NO POINT WHATSOEVER running a speedtest - at all. I know Azzaka asked you to do one, but he probably hadn't read your previous thread where I, and others, kept telling you that the problem was with the sync speed and that speedtests weren't going to prove anything.
So, you need to keep a watch on the sync speed in your router. Running speedtests is wasting your time. Posting them up here is wasting our time. Please don't post any more speedtests here until your sync speed changes to something higher than 576 downstream or 288 upstream.
When you ring BT, the helpdesk person will probably say to you something about waiting a few days - that is a standard response, but your problem is different. If the helpdesk bod actually does reset DLM and put your line back into training mode, it should take effect that same night, and by the following morning you should be seeing sync speeds of a lot higher than 576.
If it hasn't increased in the morning after restarting your router, you need to ring again, and again until someone does something. Keep stressing that it is not just your IP profile that is low, that your SYNC SPEED is 576 down, 288 up.
Then see how you get on.
But I will say it again... until your sync speed increases, speedtests are TOTALLY USELESS and posting results is a waste of everybody's time, including yours.
If this has come across as a bit harsh, it is purely out of frustration with repeating the same questions and answers over and over again.
The bottom line is, if you actually want to get your line sorted out, you need to contact BT on a daily basis until something happens. If you get no joy after trying for say 10 days EVERY DAY, then you have the option of complaining higher up within BT. But at the moment, you will need to be more persistent with the helpdesk if you are to stand a chance of getting anywhere.