Thanks! that certainly puts some context to it. Here is a map of me to the exchange with the likely routes I think my line takes. Big red box is exchange, small is me and black box is nearest cab.

I've been out walking just now and can find be manholes goes those two routes back to the exchange.

http://i41.tinypic.com/ddw7p.jpg

My neighbours adsl 1 stats for comparison

ADSL firmware version : A2pBT009c1.d17d
Connection mode : G.DMT
Type : Interleave
Noise margin (dB) : 10.4
Attenuation (dB) : 26.0
Attainable download rate (kbps) : 9376
ADSL status : Connected


I suspect he'd get more from ADSL2+ than me.

Well at the moment it is likely he is on 8128 or 7616kbps sync, but it would be useful to have one of them confirmed.

In reply to a post by huwwatkins:

I suspect he'd get more from ADSL2+ than me.

Possibly not because in your opening post you said that your previous adsl1 (?) downstream attenuation was 21.5dB...

Sorry - thought i had included that,its 7616k as he has interleaving on.

Figures taken from a 5 year old Orange box - so they might have been better with a different router.

Edited by deleted (Sun 25-Mar-12 22:18:34)

In reply to a post by huwwatkins:

Hi
I logged another call with PO on thursday as this was suggested to me that this was the way to go. BT did somthing on friday (dont know what) and any remaining noise on the line seems to have gone. Now either by luck of design the error rate for last night was well down and it held sync but the sync hasn't increased.

Vivaciti suggested raising the target snr to 9 - which would make sync worse .

Depends if raising the snr target was in response to the issue of errors or sync rate - if it was to get your errors down then it can be a good trade since high error rates really hurt streaming web content and you can have better performance in that area if you sacrifice some of the headline sync rate for overall stability with less errors.

Tweaking performance is more then just going after the highest raw sync rate possible, its about what works best for the user.

Edited by deleted (Mon 26-Mar-12 09:37:19)

You might be interested to know I'm in Llys Ardwyn on the same map on BT 21CN ADSL2+ (via AAISP) and have these stats reported on the modem:

noise margin upstream: 6 db
output power downstream: 21 db
attenuation upstream: 7 db

noise margin downstream: 6 db
output power upstream: 9 db
attenuation downstream: 17 db

And from BT, yesterday at 11am:

DSL Status Check Successful Circuit In Sync
BRAS=18180Kb/s FTR=2272Kb/s MSR=2272Kb/s ServOpt= I/L=O
Up Sync=1067Kb/s LoopLoss=7.8dB SNR=7dB ErrSec=0 HECErr=0 Cells=740569
Down Sync=20673Kb/s LoopLoss=17.6dB SNR=6.5dB ErrSec=0 HECErr=N/A Cells=1647134

speedtest

awoodland,

Nice numbers!!!

What modem/router are you using?

Zyxel P660-R, Firmware V3.40(ANZ.6). It's been incredibly reliable, an uptime of 7839:37:29 (H:M:S) which I think is the date of the last power cut.

Are you on Llys arwyn near llanbadarn road or further up toards the hospital?