ADSL connection speed

Hi,

I have have recently had 1Mb ADSL but speed tests using ADSLGuide showed
that it was running a bit slow. After loads of investigation, I have found
that this is because my modem connects at a rate of 1024 Kbps, whereas it
should connect at 1152 Kbps.

My ADSL is provided by Kingston Communications, which, for those of you who
don't know, are the main telecoms provider in Hull and East Yorkshire and
they own the exchanges, the lines and the ISP.

My village has only just been ADSL enabled and I think that the problem is
down to the fact that someone has configured the DSLAM to accept connections
at 1024, not 1152. Unfortunately I don't know anyone else in my village with
1Mb ADSL to check this with. I do know some people in Hull who are also with
Kingston with 1Mb and they all connect at 1152.

I don't think it is a problem with my modem as I have tried one modem and
two different routers and they all connect at 1024.

I'm also sure it's not a line qualtiy issue as my router has an ADSL stats
page which gives the follwoing results (which I believe are pretty good):

Downstream SNR margin (dB) : 30.6
Upstream SNR margin (dB) : 24.0
Downstream Attenuation (dB) : 4.5
Upstream Attenuation (dB) : 7.5
Downstream attainable rate (Kbps) : 12032
Upstream attainable rate (Kbps) : 876
Downstream Rate (Kbps) : 1024
Upstream Rate (Kbps) : 288

All the error rate columns showed 0 errors.

I have complained to Kingston but they don't seem very interested in my
problem.

So, I have two questions. Firstly, can anyone else think of any other
reasons why I can only connect at 1024?

Secondly, does anyone know the technical details of how the speed cap will
be set. I.e. will it be based on the line I am calling from, the username I
use to log in with etc.?

Thanks.

Bob.

if your modem is training up at 1024kbps, then that will be down to the way
Kingston has configured your line card on the DSLAM. It is a static setting
and not connected to your username/password etc.

It comes down to what a company defines to be 1Mbps. It seems Kingston have
defined that it is 1024kbps, and that is defined at the ATM layer. That
means you have 1024kbps of ATM data pumping down your line.

BT on the other hand, define 1Mbps to be 1152kbps - this is because they
define it at the IP Layer, not the ATM layer. So when you strip off the ATM
headers on 1152kbps, you end up with 1024kbps of IP data pumping down your
line.

Both are correct in the own definitions. I suspect all Kingston customers
will have the same setting, so i dont suppose you will have any joy moaning
a Kingston because that is the way they do things.

In truth, for almost all practical applications you would notice any
difference between 1024 and 1152.



"Bob Moss" <(E-Mail Removed)> wrote in message
news:7M-(E-Mail Removed)...
> Hi,
>
> I have have recently had 1Mb ADSL but speed tests using ADSLGuide showed
> that it was running a bit slow. After loads of investigation, I have found
> that this is because my modem connects at a rate of 1024 Kbps, whereas it
> should connect at 1152 Kbps.
>
> My ADSL is provided by Kingston Communications, which, for those of you
who
> don't know, are the main telecoms provider in Hull and East Yorkshire and
> they own the exchanges, the lines and the ISP.
>
> My village has only just been ADSL enabled and I think that the problem is
> down to the fact that someone has configured the DSLAM to accept
connections
> at 1024, not 1152. Unfortunately I don't know anyone else in my village
with
> 1Mb ADSL to check this with. I do know some people in Hull who are also
with
> Kingston with 1Mb and they all connect at 1152.
>
> I don't think it is a problem with my modem as I have tried one modem and
> two different routers and they all connect at 1024.
>
> I'm also sure it's not a line qualtiy issue as my router has an ADSL stats
> page which gives the follwoing results (which I believe are pretty good):
>
> Downstream SNR margin (dB) : 30.6
> Upstream SNR margin (dB) : 24.0
> Downstream Attenuation (dB) : 4.5
> Upstream Attenuation (dB) : 7.5
> Downstream attainable rate (Kbps) : 12032
> Upstream attainable rate (Kbps) : 876
> Downstream Rate (Kbps) : 1024
> Upstream Rate (Kbps) : 288
>
> All the error rate columns showed 0 errors.
>
> I have complained to Kingston but they don't seem very interested in my
> problem.
>
> So, I have two questions. Firstly, can anyone else think of any other
> reasons why I can only connect at 1024?
>
> Secondly, does anyone know the technical details of how the speed cap will
> be set. I.e. will it be based on the line I am calling from, the username
I
> use to log in with etc.?
>
> Thanks.
>
> Bob.
>
>

"Martin" <(E-Mail Removed)> wrote in message
news:4090e95e$(E-Mail Removed)...
> It comes down to what a company defines to be 1Mbps. It seems Kingston
have
> defined that it is 1024kbps, and that is defined at the ATM layer. That
> means you have 1024kbps of ATM data pumping down your line.
>
> Both are correct in the own definitions. I suspect all Kingston customers
> will have the same setting, so i dont suppose you will have any joy
moaning
> a Kingston because that is the way they do things.
>

Hi Martin,

Thanks for the reply. I have checked with other Kingston users (on different
exchanges to me) and they all get a connection at 1152 Kbps. Even the tech
support guy at Kingston agreed that I should be connecting at 1152 Kbps.
That's why I think they may have miss-configured something in the new kit as
I can't think of any other reason why my modem would connect at 1024.

Thanks.

Bob.

"Bob Moss" <(E-Mail Removed)> wrote in
news:(E-Mail Removed):

> Thanks for the reply. I have checked with other Kingston users (on
> different exchanges to me) and they all get a connection at 1152 Kbps.
> Even the tech support guy at Kingston agreed that I should be
> connecting at 1152 Kbps. That's why I think they may have
> miss-configured something in the new kit as I can't think of any other
> reason why my modem would connect at 1024.

Could it just be the way that your modem/router is reporting the speed
that's wrong. Try a speed test (such as the one at www.adslguide.org.uk)
and see what kind of speeds you get.

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"Phil Chung" <(E-Mail Removed)> wrote in message
news:Xns94DA8E5242832pylchungnet@193.42.231.152...
> "Bob Moss" <(E-Mail Removed)> wrote in
> news:(E-Mail Removed):
>
> > Thanks for the reply. I have checked with other Kingston users (on
> > different exchanges to me) and they all get a connection at 1152 Kbps.
> > Even the tech support guy at Kingston agreed that I should be
> > connecting at 1152 Kbps. That's why I think they may have
> > miss-configured something in the new kit as I can't think of any other
> > reason why my modem would connect at 1024.
>
> Could it just be the way that your modem/router is reporting the speed
> that's wrong. Try a speed test (such as the one at www.adslguide.org.uk)
> and see what kind of speeds you get.

Thanks. No, the modem and router are definately reporting the correct speed.
ADSLGuide reports an actual download speed of 851 Kbps whereas everyone else
(who connect at 1152) get around 963 Kbps.

Cheers.