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< Talk Technical here... ~ Attainable rate?

sweeperdog

Posted: Thu Oct 18, 2007 7:39 pm

Joined: 27 May 2006 Posts: 781

Attainable download rate (kbps) : 5504
ADSL status : Connected [0]

Downstream Upstream
Rate (kbps) 2272 288

Is this the rate my line is capable of given my SNR figures?

OrangeProblems

Posted: Thu Oct 18, 2007 7:39 pm

Full information on how to change your broadband provider here. OrangeProblems.co.uk

keithwjones

Posted: Fri Oct 19, 2007 2:15 pm

Joined: 12 Jun 2006 Posts: 907 Location: Weston-super-Mare, UK

Attainable download rate (kbps) : 7712
ADSL status : Connected [0]

Downstream Upstream
Rate (kbps) 7168 288

I get a speed of just over 6000.

But with your stats:

FIXED SPEED:

Downstream Upstream
Rate (kbps) 2272 288

These stats would indicate to me that you are on a fixed 2mb line, so your speed will not increase above 2.

Not very good if you are on an up to 8mb service. Could be worse some are on 608 which is about 0.5 mb.

For the reason you will have to ask Orange. Until you ask for a MAC code they will not take the cap off.

Keith

sweeperdog

Posted: Fri Oct 19, 2007 3:23 pm

Joined: 27 May 2006 Posts: 781

They capped the speed in order to increase my LLU speeds from unusable to working. I just wonderied what the point of displaying the (non)attainable speed was if it wasn't achievable

Last edited by sweeperdog on Fri Oct 19, 2007 3:39 pm; edited 1 time in total

keithwjones

Posted: Fri Oct 19, 2007 3:38 pm

Joined: 12 Jun 2006 Posts: 907 Location: Weston-super-Mare, UK

To get my speed of 6000:

Connection mode : G.DMT
Type : Fast
Noise margin (dB) : 8.1
Attenuation (dB) : 38.0
Attainable download rate (kbps) : 7712
ADSL status : Connected [0]

Downstream Upstream
Rate (kbps) 7168 288

From your stats I don't think you can work out whether you are on LLU or BT IPSTREAM HOME 2000 - Fixed 2Mb.

I would have thought that your line could be faster than 2000 at a rough estimate I would have thought around 4000.

Keith

OrangeProblems

Posted: Fri Oct 19, 2007 3:38 pm

Full information on how to change your broadband provider here. OrangeProblems.co.uk

sweeperdog

Posted: Fri Oct 19, 2007 4:06 pm

Joined: 27 May 2006 Posts: 781

Upstream = 288 = LLU
This was following my "speed upgrade" email. I was getting 5MB prior to this

Last night was the first time I plugged in the livebox - only to be replaced by my netgear after 10 mins. It's spooky where it got that attainable rate from

keithwjones

Posted: Fri Oct 19, 2007 4:14 pm

Joined: 12 Jun 2006 Posts: 907 Location: Weston-super-Mare, UK

Yes agree with LLU but upstream = 288 = BT IPSTREAM HOME 2000 also. So in my view it could be either. I've seen it discussed before with no clear answer so you could be right that it is LLU.

What is the:

Type :
Noise margin (dB) :
Attenuation (dB) :

Keith

sweeperdog

Posted: Fri Oct 19, 2007 5:50 pm

Joined: 27 May 2006 Posts: 781

www.speedtester.BT.com throws an error too, so I guess this confirms LLU
Will post dB's later

Code:

ADSL Link Downstream Upstream
Connection Speed 2272 kbps 288 kbps
Line Attenuation 31.0 db 15.5 db
Noise Margin 17.3 db 27.0 db

Elhana

Posted: Fri Oct 19, 2007 9:59 pm

Joined: 11 Apr 2006 Posts: 3394

The attainable is just what speed you would be able to get with the shown stats under best conditions.

_________________

keithwjones

Posted: Fri Oct 19, 2007 10:21 pm

Joined: 12 Jun 2006 Posts: 907 Location: Weston-super-Mare, UK

It looks as though you are closer to the exchange than I am.

I increased my attainable by following this:

http://www.dslzoneuk.net/socket.php

Keith

sweeperdog

Posted: Sat Oct 20, 2007 12:00 am

Joined: 27 May 2006 Posts: 781

Elhana wrote:

The attainable is just what speed you would be able to get with the shown stats under best conditions.

Thanks, that's what I thought. Shame they can't deliver that though Very Happy

sweeperdog

Posted: Sat Oct 20, 2007 12:01 am

Joined: 27 May 2006 Posts: 781

keithwjones wrote:

It looks as though you are closer to the exchange than I am.

I increased my attainable by following this:

http://www.dslzoneuk.net/socket.php

Keith

Yep that's one thing I am going to do some time before I leave Orange. It won't make much difference to my current connection anyway since I get download speeds of around 1800 which for my downstream rate I can live with

Elhana

Posted: Sat Oct 20, 2007 7:04 am

Joined: 11 Apr 2006 Posts: 3394

Nobody actually gets the attainable, that's what you'd get under perfect conditions and that never happens. Closest you usually get is within 200kbps or so, it's just a useful guide.

There will be cases where the line appears it should be able to run at that speed but can't when it's actually tried. It seems LLU is a bit more prone to this due to how it works and that there's no real error correction etc.

_________________

sweeperdog

Posted: Sat Oct 20, 2007 11:48 am

Joined: 27 May 2006 Posts: 781

That's fine -
When I get round to checking my extensions - possibly replacing the mcrofilters, I will do a before and after and see what happens to my stats

All times are GMT

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