In reply to a post by MrSaffron:

Wrong

Sync rate changes are instant always

IP Profile which governs data rate will not change, may take 1 hour to 5 days to change

Sorry, I think that's what I was trying to say in a roundabout way. Long time since inglishh o level
As I see it...
My sync rate won't change in my circumstances because it's already pretty good at 6725kbps (better than my profile would suggest). So if I resync it will sync at the same speed (assuming my line is at max potential).
If my sync rate did improve my data rate wouldn't immediately change because my profile would limit it for 1hour to 5 days.
So from a testing perspective if I change something and restart my router I am unlikely to see any change immediately because my sync rate won't go any higher and my profile won't change straight away??
Sorry to be so verbose but I want to make sure of my facts before I shout at ISP

Is it also true to say that if these stats stay constant then my modem, cabling and line to the exchange are all ok, my profile should improve and any issues must be deeper in the network?

Router stats show a steady sync rate of 6752kbps
and Rx noise marging of 14-15dB since yeasterday early PM.
Is it true to say that if they stay that way for 5 days my profile rate should increase back up to 5.5Mbps for the above sync rate?
Are there any other factors I need to look for which may effect my profile?

"Is it also true to say that if these stats stay constant then my modem, cabling and line to the exchange are all ok, my profile should improve and any issues must be deeper in the network? "

Probably - there can still be issues affecting throughput that are not showing up via poor connection speed and IP Profiles, but on balance if all is well as you suggest, then does point towards core network/ISP issues

In reply to a post by crey:

...So from a testing perspective if I change something and restart my router I am unlikely to see any change immediately because my sync rate won't go any higher and my profile won't change straight away??

Changing your kit etc. will allow your to see changes to your sync/attention/noisemargin immediately so you can see if you are improving (or not!) things (the link is to my web page where I've tried to explain the basics).

Not sure if this has been mentioned but resyncs/reconnects should always be done during the day to get the best results (darkness=noise) also don't resync too often or BT will think you have a line problem and increase your Target SNRM!

In reply to a post by b4dger:

In reply to a post by crey:

...So from a testing perspective if I change something and restart my router I am unlikely to see any change immediately because my sync rate won't go any higher and my profile won't change straight away??

Changing your kit etc. will allow your to see changes to your sync/attention/noisemargin immediately so you can see if you are improving (or not!) things (the link is to my web page where I've tried to explain the basics).

Not sure if this has been mentioned but resyncs/reconnects should always be done during the day to get the best results (darkness=noise) also don't resync too often or BT will think you have a line problem and increase your Target SNRM!

Thanks b4deger, I'll read up on your site.
So, as I already have a decent sync rate of6725kbps and Rx Noise Margin of >14dB
My Line Attenuation is 24dB but surely I can't do anything about that as it's mainly a function of distance from exchange.
These figures, assuming thay can be maintained (I am running RouterStats on it) should give me a profile speed of 5.5Mbps (which I had before the problem). So I don't need to change any kit my end because I have no figures to improve. Therefor problem is with ISP/BT.
Or am I looking at this wrong??

Regards
Clive

Profile up to 5.5mbps now with speed test showing 5.1Mbps down. Slightly lower than I had before but getting there
I'm leaving it alone for the rest of today/night with router stats running. Will normalise wiring (I am in test socket ATT) tommorow and see if it affects my sync rate.
With a sync rate of 6752kbps and noise margin of >14dB is there anything I can do to increase my profile further?
I already have NTE5 socket with ADSL faceplate etc.

If you have a downstream attenuation of 24dB you should normally be syncing at 8128 on standard ADSL.

Could you post your router stats?

i.e. SNR margin, attenuation, sync rate for both up and down stream, plus any error counts you can find and uptime?

Don't know if this will post properly but here the router stats table...
I can't get it to line up properly and can't get it into a tabler. I can save it as a jpg but can't post attachments, is that cos I is new?

System Up Time 56:05:46

Port Status TxPkts RxPkts Collisions Tx B/s Rx B/s Up Time
WAN PPPoA 305484 452738 0 293 2453 56:05:14
LAN 10M/100M 468833 336595 0 2234 286 56:05:41
WLAN 11M/54M/108M195869 177793 0 905 339 56:05:35

ADSL Link Downstream Upstream
Connection Speed 6752 kbps 448 kbps
Line Attenuation 24.0 db 14.5 db
Noise Margin 14.3 db 24.0 db

Attachments/images arent allow to protect you spammers/scammers

The high target noise margin is probably why you aren't getting the 8Meg sync, if the target noise margin was reduced to 9dB then 8Meg sync seems possible

In reply to a post by MrSaffron:

Attachments/images arent allow to protect you spammers/scammers

The high target noise margin is probably why you aren't getting the 8Meg sync, if the target noise margin was reduced to 9dB then 8Meg sync seems possible

Is that figure the "target" noise margin and not the "actual" margin?
In any case I'm guessing that it is for my ISP/BT to reduce or is there anything I can do to reduce it?
Thanks for heads up on piccies