When they put me on ADSL2+ someone obviously stuck in a couple of kilometres of wire for me. 
I don't think that graph works.

I think i'm slightly confused similar to @Sauniere, but am probably just a bit dim when it comes to all of this stuff. i switched onto the trial on the 11th, so i understand that the line is still settling.  i'm lurking in this forum every now and then whilst waiting for something to happen.  Router is Linksys WAG354G.  Before the trial went live my stats were:
   
DSL Modulation Mode:  GDMT   
DSL Path Mode:  INTERLEAVED       
Downstream Rate:  3264 Kbps       
Upstream Rate:  448 Kbps       
Downstream Margin:  6 db       
Upstream Margin:  20 db       
Downstream Line Attenuation:  48       
Upstream Line Attenuation:  31       
Downstream Transmit Power:  0       
Upstream Transmit Power:  0

I've set the mode to ADSL2+ and today the stats are starting to change - currently:

DSL Modulation Mode:  ADSL2+       
DSL Path Mode:  FAST       
Downstream Rate:  3142 Kbps       
Upstream Rate:  445 Kbps       
Downstream Margin:  15 db       
Upstream Margin:  15 db       
Downstream Line Attenuation:  46       
Upstream Line Attenuation:  30       
Downstream Transmit Power:  0       
Upstream Transmit Power:  0

Haven't noticed any changes to speeds yet - before and after trial its usually about:

Will wait and see what happens over the next few days...
J

I did a factory reset of my router and I also tried some telnet commands that I found to force the router to ADSL2 if it wasn't already.

This has made no difference.  Sync speed still circa 4700 u/stream is 448. Still no wiser regarding if this is normal or if something is wrong.  I'm very loathe to fork out £50 for a new router if this one is fine.  Have I been switched onto ADSL 2 yet can somebody confirm? 

Sorry - You're definitely on ADSL2+.

Can you confirm what the modulation setting in your router is?

hi guys...

could someone please confirm that my modem settings are correct.  we are on the ADSL2 trial on the Paignton Exchange but since the switchover on monday we have had no broadband what so ever!!  dont even get the connectivity light on the router!

Model Netgear DGN2000 - i went out and bought the router new on monday as was told my current router DG834PN not compatable with ADSL2..

So i guess it is possible that the new router i bought is dead on arrival .. however needed to check

We are using same settings on the router as ADSL; VPI0 VCI38 PPPoA VCMux

Just needed to check that the VPI / VCI settings are correct.

I think they now have suggested that it is a fault with the line - BT dispached a telephone engineer who ive just spoken with but he stated he is a telephone engineer and not a broadband engineer and so probably couldnt help!

Hi Stonyd,

It sounds very much like a broadband fault I'm afraid.

Could you please either call us, or raise a fault online by going to http://faults.plus.net and we'll do everything we can to get you up and running again.

Thanks for the quick reply Jameseh

Have had the fault logged since monday - its been progressed to BT who will be testing the line etc. this afternoon.. It may just be co-incidence that all our broadband stopped working on the day we were due to go on to the ADSL2 trial, and it is actually a fault developed with the line...

But just to confirm.... are these modem settings correct for ADSL2?

VPI0 VCI38 PPPoA VCMux

(ive looked everywhere on the site but could not find a page that specifically states that these settings are for use with ADSL2)

Yes, those settings remain correct.

Also even if your old router does not support ADSL2+ it can still be used to test connectivity. It will simply connect using G.DMT (as previously) or ADSL2 (without the +) . However the maximum download speed achievable will be capped.

It probably isn't a good idea to run with those modulations for too long though - the DLM might think that's all your line is good for.

My 10 day set period is coming to an end and my BT line seems to have settled as below:-

 ADSL Link                 Downstream Upstream
Connection Speed       8021 kbps   444 kbps
Line Attenuation                 38 db       10.5 db
Noise Margin                        9 db           23 db

This is disappointing as previously with Max I was getting a solid 8128kbps/448kps, Line Attenuation and Noise Margins are the same give or take 1db

It would appear BT are unable to deliver the goods at the moment.

Is your router connected with the ADSL2+ (note the +) DSL protocol? I suspect it isn't - does your router support it? With your attenuation your downstream sync on 21CN and using ADSL2+ should be around 10000kbps. Also the upstream sync speed should be much higher.

there's no way to find out in the router control panel but telnetting into it i can see that the modulation is G DMT.   

My router is a Netgear DG834G v3, which is compatible with ADSL2+, At the commencement of CN21 trial I was using Firmware Version V4.01.28, initially it was syncing at around 9300/445kps, it ran like this for the first 5 days, last weekend I noticed the line kept dropping, initially I thought this was the mux re-syncing but it carried on with no real change in line speeds, after checking with Netgear I upgraded the Firmware to V4.01.40, initially the line synced at 10300/445kps for about 24 hours and then dropped to the current level. The uplink has never been better than 445kps.

OK I have have changed the DSL Mode from Auto to ADSL2+ and rebooted, speeds are now 8209/444kps

                                 Downstream               Upstream
Line Attenuation          38 db                       10.5 db
Noise Margin                 9 db                  2147483647 db


Thanks for your help

I've managed to alter the modulation to A2PMOD (via telent again0 which i believe is the correct modulation for ADSL2+ ?    No change at the moment but I'll see what happens.


**edit.  Reboot this morning and still same syncs.  I reckon a new router is in order do you agree?

As this is a trial, I do not want to replace a perfectly good router on the off chance that it will improve the performance.

                                Downstream               Upstream
Line Attenuation          38 db                       10.5 db
Noise Margin                 9 db                  2147483647 db  

The Noise Margin on the Upstream puzzles me, it had dropped to 19db this morning but I have done a software reboot and it is back at this weird value, Downstream speed has increased to 8392kps Upstream is the same.

Maybe Plusnet will loan me one of their approved wireless routers to test as I think this was mentioned in the initial notes?

In the meantime I have raised a question with Netgear Techincal Support.

Moderator's Note by David (spraxyt): Full quote of previous post removed as per Forum Rules.

@ Sauniere

If you're happy to pay the £6.99 postage charge, I'd be happy to sort you out with an ADSL2+ apable wireless router.