Target SNR

Hi
Is there any chance one of the Plusnet guys could have a look at ticket 47753440 please.
Basically my trusty old Netgear router went kaput yesterday and in the process of replacing it my Target SNR jumped up from a very reliable 6 to 12, probably due to all the disconnections whilst getting the new router up and running.
In the reply to my ticket, i've been asked to raise a speed fault, going through numerous checks, tests, questions etc.
Just wandering if that's all necessary, just need the SNR bringing down to 6 soon as, rather than waiting for an eternity for BT's [censored] old 20cn network to catch up.
Thanks
Jeff

There is no point really, because reduce from 12dB to 6dB had to be very good line with less errors and had to be stable. Look like your exchange decided 12dB is the best target for your line. I had asked Plusnet to reduce back to 6dB when I use to have stable at 6dB for months, but they told me it had to deal within the fault team, as it had to raised a fault ticket. The fault team look into it, found no fault and agree to reduce to 6dB but only a matter of time later, the exchange return to 12dB itself. So, we had to accepted what the exchange want, not you. I know it total unfair play by BT. That's BT for you.

Been with Plusnet a couple of months. Very good speed and snr to start with. I was syncing at 15 plus mb and getting 13 down. One little bit of file sharing and PN soon put paid to that. i have had a month of syncing at 11+mb and getting 8.5 to 9 down due to a line profile of 10500. Restarts every few days with several routers made no difference.
Took delivery of a Billion BiPAK 7800N today and immideately hooked into my exchange at 13+mb, and after forcing my snr down to 4.5 am now connecting at 14751 with the 10500 profile. I will see what happens over the next few days before deciding to stay or not.
Edit:- Exactly 8 hours on from installing the Billion I now have an IP profile of 13013 for a DSL connection rate of 14750. looks like we are on the mend. Well done Billion!

Edited by deleted (Mon 17-Oct-11 21:13:26)

In reply to a post by adslmax:

only a matter of time later, the exchange return to 12dB itself. So, we had to accepted what the exchange want, not you.

No, you don't if you get a router, like Netgear DG834GT, where you can tweak the Target NM yourself.

I had a Netgear DG834N but I do believed BT exchanges on those on ADSL2+ had blocked snr tweaking, it won't work.

If you notice the DMT Tool, if you leave it at the default snr 12dB and RCO at 98% but if you do tweak snr down to 6dB and the RCO will drop to 85% mean the true line speed throughput will be reduced even with the higher sync rate but you won't getting anywhere at 98% RCO true speed.

Edited by adslmax (Mon 17-Oct-11 18:15:23)

In there case if the issue was just due to a shortish period of instabilty where the route cause has been fixed, then no harm in lowering it.

The exchange only returns it to a higher value if the line history shows the frequent disconnects, if they have stopped then 6dB can be held.

Some ISP's it is easier to get done than others.

Mine is comfortable sitting at 3dB snr for a month now, sync rate 16978K at 33dB line attenuation with the new ip profile rate of 14979K and got throughput speed of 14458K and quite happy with it. I did ask my isp Plusnet to reduce from 12dB to 3dB and had accepted.

Edited by adslmax (Mon 17-Oct-11 19:20:43)

What a difference 20 hours make with a decent router.
Before Billion. http://speedtest.net/result/1540456327.png
After Billion. http://speedtest.net/result/1541226940.png
Now syncing even faster at 14627, so should soon be up to 13M down again. It just goes to show how easy it is to rubbish an ISP when we are running iffy gear.

Edited by deleted (Tue 18-Oct-11 09:44:36)

My Netgear DG834N is now steady at 1.4dB snr for 25 hours ongoing and the sync rate had rise to 17819k with ip profile @ 15721k and throughput speed of 15178k. Pretty good for my downstream line attenuation after manage to tweak lower snr from the dmt tool.

http://www.speedtest.net/result/1541499800.png 15.17Meg

Edited by adslmax (Tue 18-Oct-11 13:03:33)

My Billion has stayed at the same sync and stable down to 2.9db in the evenings, but that did not stop PN dropping my speed down to 8500 after 24 hours despite my high IP Profile. I have requested they nail my snr to 3db, but I am losing patience.

Edited by deleted (Thu 20-Oct-11 21:03:53)

Well I got ticket No. 47923220. I recieved the following ignorance from James Somerville this morning.
"Unfortunately when it comes to raising a fault, BT advise your line estimate to be in the range of 8Mb, so the fact it is still running at 9Mb does seem to indicate it's not likely to run any faster, and as such BT would not accept a fault raised against the line"
This is despite supplying the following images showing past speed and my current strangled speed. he also seemed ignorant of the recent PN slowdowns and outages.
After the PN cock-up of hooking me to someone else's line upon connection, and dropping another MB to under 8, I am finding it hard not to return to BT, though we have TT LLU on Eagle next month.
http://img215.imageshack.us/img215/9528/billionconne...
http://img717.imageshack.us/img717/355/btspeedtest.jpg
http://speedtest.net/result/1495950977.png

Edited by deleted (Fri 21-Oct-11 11:58:10)

Cont... My 30.5 attenuation divided by 13.9 places me around 2.2km from my exchange. This should give an ADSL2+ speed of 13000kbps. You will see this is confirmed by my line profile in the BT Speedtest this morning, but with a strangled download for the last week.
Edit:- Whereas BT always estimated my line at a 14Mb service, they are now giving the 8Mb estimate, which is somewhere around my level of strangulation, which is a joke compared to my previous speed. It would seem anything remotely related to BT is a nightmare in some respects. Either their direct high prices, or a strangled, limited service from a BTW reseller.
http://img577.imageshack.us/img577/3053/btspeedestim...

Edited by deleted (Fri 21-Oct-11 12:47:28)

Have you checked the "Current line speed" in your Plusnet Member Centre, or whatever they call your Control Panel?

These BT estimates really are a pain and seem blatantly to work against the customer. Mine plunged from 3Mb to 1Mb a year or so ago and I would have had great difficulty getting any speed problems looked at if I'd fallen below the 3-4Mb I normally got on ADSL.

In reply to a post by RobertoS:

Have you checked the "Current line speed" in your Plusnet Member Centre, or whatever they call your Control Panel?

Yes, at the moment showing.
Phone exchange:
GLEMSFORD
Estimated line speed:
7Mb (This may vary between 6Mb and 8Mb) - Checked on 2011-08-18 00:41:30
Current line speed:
9 Mb
The biggest problem I am facing, seems to be total ignorance, along with a refusal to acknowledge what I was and should be getting on my up to 20Mb ADSL2+ connection.
I realise Plusnet pay for referrals, which to me is one step away from pyramid selling, but I am beginning to suspect they also pay for all the customer satisfaction reports, as I have had nothing but grief.

Another hour and more than another Mb gone down the drain, though still hooked up at 14,782kbps. At this rate I will lose connection before I can order from elsewhere. If I were you, i would abandon ship!
http://img577.imageshack.us/img577/7678/newbtspeedte...

Edited by deleted (Fri 21-Oct-11 14:01:34)

Hi there,

I've initiated an SNR reset on the line as the last profile update we had was to 9000 based on a sync rate of 10608. Given your current sync rate it should retrain to at least 12000.

I hope that helps,

That 9Mb "Current line speed" was the problem. I see Orbrey has now set in motion an SNRM/10-day training reset. That may fix it, or may not. Depends whether that 9Mbps gets updated, which I thought they could do internally. Unless the BRAS copy is also 9Mbps.

In reply to a post by m0aur:

http://www.speedtest.net/result/1471194812.png

Why is your upload speed so bad?

In reply to a post by RobertoS:

That 9Mb "Current line speed" was the problem. I see Orbrey has now set in motion an SNRM/10-day training reset. That may fix it, or may not. Depends whether that 9Mbps gets updated, which I thought they could do internally. Unless the BRAS copy is also 9Mbps.

I don't hold out much hope. Every time I have raised (If you will excuse the expression), it has always been slammed back down within about 24 hours.
I did a load of wonga on the Billion in the last 10 days and things improved as soon as I plugged it in. Things improved again when I forced the snr down, which is why I bought the Billion along with it's reputation for reliability, but the kybosh was applied within a day again.

In reply to a post by kadison44:

In reply to a post by m0aur:

http://www.speedtest.net/result/1471194812.png

Why is your upload speed so bad?

I have't a clue. It has always been the same whoever my ISP, so best ask Plusnet.

In reply to a post by orbrey:

Hi there,

I've initiated an SNR reset on the line as the last profile update we had was to 9000 based on a sync rate of 10608. Given your current sync rate it should retrain to at least 12000.

I hope that helps,

Thanks Matthew, competence at last, though I would bet the snr has not been nailed to 3db as requested.

In reply to a post by m0aur:

I have't a clue. It has always been the same whoever my ISP, so best ask Plusnet.

Just that you're obivously on ADSL2+ but that upload looks like an 'old' ADSL upload result from a 448Kbps line. Might just be co-incidence and your line can't support faster upload.

In reply to a post by kadison44:

In reply to a post by m0aur:

I have't a clue. It has always been the same whoever my ISP, so best ask Plusnet.

Just that you're obivously on ADSL2+ but that upload looks like an 'old' ADSL upload result from a 448Kbps line. Might just be co-incidence and your line can't support faster upload.

I seem to remember that Plusnet default ADSL2+ to 448kbps upload, but happily raise it if requested by ticket.

In reply to a post by RobertoS:

I seem to remember that Plusnet default ADSL2+ to 448kbps upload, but happily raise it if requested by ticket.

Are you serious!? That's ridiculous.

It's just that my Dad is with Plusnet and i've recently advised them about a rogue 15dB noise margin on his good quality line.

He was still on ADSL'1' even though exhange was upgraded to ADSL2+ during his time with them, and they've only now after this ticket admitted there's "an issue with the provisioning of the line", so are regrading it. I remember asking them before if he could be upgraded to 21CN WBC as soon as it was available and they flat refused.

Anyway at least it's being sorted now but looks like i've got to raise a further ticket about upload speed. What a ball ache.

In reply to a post by kadison44:

In reply to a post by m0aur:

I have't a clue. It has always been the same whoever my ISP, so best ask Plusnet.

Just that you're obivously on ADSL2+ but that upload looks like an 'old' ADSL upload result from a 448Kbps line. Might just be co-incidence and your line can't support faster upload.

I think you are quite right correct, that's the upload since I was on 8Mb ADSL. I realise that despite everyone knocking BT, especially on price, but every other cheaper ISP has to cut corners. PN seem to cat more than most. Slow upload, restricted usage and only 20Mb of the 24Mb that ADSL2+ is capable of, though some of the problem is that they are controlled by BT/Openreach, and I haven't got much sense from them or their system lately

Edited by deleted (Fri 21-Oct-11 16:16:46)

Surely resetting my snr couldn't make things worse ... Could it?
Well the last couple of hours have been fun. http://img831.imageshack.us/img831/2907/capturezso.jpg
Not to worry, back on the strangled 8Mb now.

In reply to a post by orbrey:

Hi there,

I've initiated an SNR reset on the line as the last profile update we had was to 9000 based on a sync rate of 10608. Given your current sync rate it should retrain to at least 12000.

I hope that helps,

Forced a re-sync. Now hooking up at 16664kbps with aline profile of 14658kbps, but still only getting 7622kbps down. I will see if things improve, but was under the impression that things should change almost immediately, so don't hold out much hope
http://img809.imageshack.us/img809/7471/newbtspeedte...

In reply to a post by kadison44:

Are you serious!? That's ridiculous.

On 21CN the ISP can indeed set the upload to 448Kbps (i agree, it's a tad silly). It just requires a quick modify and it can be changed to uncapped.

Because he hasn't asked for it to be uncapped!

PN found that on some lines uncapping the upload reduced the download throughput a little. As most people are more concerned by the download speed they default to give the best possible on that.

The Plusnet copy of the profile always takes a few hours to catch up, as it isn't a real-time update, but that update often fails and possibly even worse with the new 88.2% method that you are on.

If it isn't right tomorrow, you should just need the Plusnet copy setting to 14000, or 14658 if they can do that.

In reply to a post by RobertoS:

The Plusnet copy of the profile always takes a few hours to catch up, as it isn't a real-time update, but that update often fails and possibly even worse with the new 88.2% method that you are on.

If it isn't right tomorrow, you should just need the Plusnet copy setting to 14000, or 14658 if they can do that.

It looks like being the usual nightmare. After a few hours things picked up again. Nearly 13Mb down on speedtest net, but STILL the BT speedtester was only showing 7Mb down, despite showing a sync of 16614 kbps and a line profile of 14658kbps. For some reason for the last week or two, it seems that the BT system has decided I am to have no more than 7+kbps. As I expected, speed fell to the floor after half an hour.
http://speedtest.net/result/1548255609.png
http://img854.imageshack.us/img854/7599/latestbt.jpg
30 Minutes later.
http://www.speedtest.net/result/1548288860.png
All despite the Billion router now showing 16615kbps sync, 14782kbps down, SNR down 4.6db and ATT down 30.5. All of which is very respectable. I really have had enough of anything remotely BT.

Edited by deleted (Fri 21-Oct-11 23:53:28)

In reply to a post by aquiss:

In reply to a post by kadison44:

Are you serious!? That's ridiculous.

On 21CN the ISP can indeed set the upload to 448Kbps (i agree, it's a tad silly). It just requires a quick modify and it can be changed to uncapped.

Ah Mr Pitt, how are you

I've raised a ticket as part of the original request so hopefully all should go through at the same time.