F9/plusnet unlimated to plusnet premium speeds & traffic shaping

[#1]

Thanks  spraxyt I'll do that.
Its been rock soild for over 12hours now 
downstream SNR has ranged between 5.9 & 6.3
Live line stats :
PPP connection time : 0:12:42:40
Modulation : ADSL2 PLUS
Annex Mode : ANNEX_A

Downstream Upstream
SNR Margin : 6.2 9.4 db
Line Attenuation : 37.0 25.0 db
Data Rate : 6756 888 kbps

[#2]

Up over 7000kbps after following spraxyt advice.
Line stats
Downstream Upstream
SNR Margin : 6.2 7.5 db
Line Attenuation :37.0 24.0 db
Data Rate : 7055 888 kbps
Will the line still go through a training period  even though It was already on ADSL2+ but set on 20CN as Chris pointed out??
Still like to get it upto round 9 or 10mbps as peer the 37 Attenuation calcs..
Thanks f9o

[#3]

@Force9Original:
Still like to get it upto round 9 or 10mbps as peer the 37 Attenuation calcs..
Some of us envy your current stats! 

[#4]

You were on 21CN previously but with a G.DMT (ADSL1) capped profile. The order raised on BT changed that to ADSL2+, but the line hasn't physically been moved so I assume re-training won't apply.
I was surprised that your attenuation decreased when your service changed to ADSL2+, a small increase is normally expected because higher frequencies with increased attenuation are brought into use and attenuation is an average value rather than G.DMT's fixed-frequency value (at 300kHz I think). My feeling is that the higher frequencies are not working for you, and you need those to get your speed up to the theoretical value.
Does your router provide bit-loading information? I think you said you didn't have an alternative ADSL2+ router to try - any chance you could borrow one from a friend?
An earlier post showed modulation as ADSL2 Plus - was that with Auto sync set or forced to ADSL2+? Wondering if you're actually connected with ADSL2 (because the 1.1-2.2MHz frequency band contributes nothing).

[#5]

I can't see any Bit-loading stats.
Router is on autosync up.  So I'll give it a good few hours  & if the SNR's ok I'll try a forced ADSL2+ sync.?
Just did another BT speed test & that 20CN stat of 7150 max speed is still showing...? Could the cap still be active ?
BTspeedtest
Download speedachieved during the test was - 5185 Kbps
For your connection, the acceptable range of speedsis 600-7150 Kbps.
Additional Information:
Your DSL Connection Rate :7055 Kbps(DOWN-STREAM), 888 Kbps(UP-STREAM)
IP Profile for your line is - 5500 Kbps
Its a shame I haven't got another ADSL2+ router to try .  
Friends & family all have ambit cable routers which run a speeds that make me envy as well DawnRider.
I never really like the sound of the Thomson so never requested one...
Thanks again for taking the time !
f9o

[#6]

Trying to understand  re-training ?
If  doesn't apply due to the fact the line already been  moved sometime ago.
How can the line speed be increased from its current 7150 max speed (according to BTSpeedtester ) if no re-training takes place. ?
Thanks f9o

[#7]

The line from the BT speedtester that mentions 7150kbps has no bearing whatsoever on your service - printing the date and time in its place would probably be more useful and informative.   Should you achieve a sync speed above 9056kbps you will find the upper value changes to something else, probably 99.99Mbps. I think BT added that line to pacify users syncing at 8128kbps on the up-to-8Mbps service who didn't get anywhere near 8128kbps throughput because protocol overheads mean 7150kbps is the maximum payload-rate that can be achieved, and even that won't be seen in speed tests because of communication management overheads,
Going through line training gets RAMBO involved on maxDSL (see Kitz's excellent description here). I assume the process will be similar for 21CN. The training period doesn't actually change your line in any way, just determines and records some of it's capabilities. The DLM keeps things up to date afterwards.
Having a spare router is always useful for fault diagnostics; why not ask Plusnet for a Thomson TG585 at a cost of £6.99 P&P with the rest written off if you stay for a year? Routerstats provides useful connection monitoring information for that, including bit-loading plots.

[#8]

Thanks again spraxyt
I've learnt so much in such a short space of time thanks to the help and advice on here.( i've still got a lot long way to go though)
Router seems not to be listed on routerstats but i'll have a good read through.
It has confused me a little that the Attenuation dropped & the SNR now dips to 5 were as before it never went below 6.
Would it be worth "checking" the ring wire even with a NTE5 v1 faceplate fitted ? (as mentioned on Kitz's )
The electric Underfloor heating may be a factor in that strange fluctuation in line stats we observed earlier on the thread.
Current line stats
SNR Margin : 5.0 7.6 db
Line Attenuation :37.0 24.0 db
Data Rate : 7055 888 kbps

Might look at that Thomson offer  at bit more closely,  I'll think I'll be staying  for a year or 2
I wonder if they'll wave the fee for being signed up for 13 years and counting.....

[#9]

Upstream data's changed today from 888 to 1052. ?
Attenuation small increase from 37 to 38

Line State : Showtime
Modulation : ADSL2 PLUS
Annex Mode : ANNEX_A

Downstream Upstream
SNR Margin : 6.2 5.8 db
Line Attenuation : 38.0 25.0 db
Data Rate : 7001 1052 kbps

[#10]

The increase in upstream sync speed could be due to the DLM turning upstream interleaving off. I believe it gets capped at 888kbps with interleaving on.
Regarding your previous question concerning checking and removing the ring wire even if an NTE5 faceplate is fitted. I think disconnecting it is desirable, though others know far more about that than I do.

[#11]

It changed early this morning like the automated change over.
I take its a good sign that interleaving is off.....?
I also tied a forced adsl2+ connection after I noticed the change in the upstream to to see if I got any different stats.
There was no real difference still sync up around 7000.
Thanks spraxyt
f9o

[#12]

@ Plusnet staff
Could I ask for a polite nudge for my PN line profile to Match BT's
Thanks f9o
(old Ticket ID: 31947192 if it helps)

[#13]

Help with understanding Upstream SNR
On the capped 20CN the upstream SNR was 25db
On 21CN its now  varies slightly around 6db
20CN Line stats
Downstream    Upstream    
 SNR Margin    :   6.2    25  db
Now on the 21CN
   Downstream    Upstream    
     SNR Margin    :   6.2    5.8     db
Is this upstream SNR a 6db a target setting ??
As explained on
http://www.kitz.co.uk/adsl/linestats.htm#SNR
Or is it something else?
thanks f9o

[#14]

When upstream sync speed is capped at 448kbps fewer bits per tone are needed to carry datagrams and those used have the highest signal to noise ratio so the noise margin increases to a value well above the target.
When upstream sync speed is uncapped the upstream target noise margin, which is normally 6dB, controls the achievable upstream sync speed. More bits per tone are used and the number of datagrams per second (reflecting sync speed)  increases. The additional bits reduce the average signal to noise ratio and the achievable upstream sync speed is reached when upstream noise margin reduces to the target value.
To answer an earlier question on whether the DLM removing upstream interleaving is a good sign - it's certainly a positive one in that the DLM must regard the number of upstream line errors as low enough not to warrant interleaving in that direction.

[#15]

Thanks  spraxyt for helping explain  SNR & interleaving  
Maybe they'll knock off the downstream if things carry on the way they are......
21CN connection had its first hissy fit tonight around 9pm. (noise spike ?)
It dropped sync 3 times in a short order of time (5-7mins) so I switched the router off for an hour in order not to set off any possable issues with the DLM. ?
(sync went as low as 6799 so there goes the profile increase for another 3 days
It re-synced fine on first attempt however the line sats are not a good due to it being night time?
Current line sats
PPP connection time : 0:01:21:54
 Line State : Showtime
Modulation : ADSL2 PLUS
Annex Mode : ANNEX_A

Downstream Upstream
SNR Margin : 5.6 5.4 db
Line Attenuation : 38.0 24.0 db
Data Rate : 6841 960 kbps
BT speed test
Download speedachieved during the test was - 5811 Kbps
For your connection, the acceptable range of speedsis 600-7150 Kbps.
Additional Information:
Your DSL Connection Rate :6841 Kbps(DOWN-STREAM), 960 Kbps(UP-STREAM)
IP Profile for your line is - 5500 Kbps

f9o