ADSL DB Losses etc etc

Hi all,

Is there a site that shows the BT limits for the losses on the line with ADSL
distances ?

ADSL guide has one here:
http://www.adslguide.org.uk/qanda.as...technical#Q211
but it's a little out of date as it only mentions upto 2Mbit.

What I'm looking for is info on the loss limits that BT specify to enable you to
have a particular speed of service.

Any ideas ?

Doz

On Mon, 15 May 2006 10:50:31 +0100, Doz <(E-Mail Removed)> wrote:

>Hi all,
>
>Is there a site that shows the BT limits for the losses on the line with ADSL
>distances ?
>
>ADSL guide has one here:
>http://www.adslguide.org.uk/qanda.as...technical#Q211
>but it's a little out of date as it only mentions upto 2Mbit.
>
>What I'm looking for is info on the loss limits that BT specify to enable you to
>have a particular speed of service.
>

The higher speeds are based mainly on SNR (Signal to Noise Ratio,
often called Margin) rather than attenuation (line loss).

There are a couple of sites where you can put in your current figures,
and it will guess at what you could expect, but not necessarily very
accurately.
--
Alex Heney, Global Villager
I used to have a handle on life, then it broke.
To reply by email, my address is alexATheneyDOTplusDOTcom

On Mon, 15 May 2006 11:12:01 +0100, Alex Heney wrote:

> On Mon, 15 May 2006 10:50:31 +0100, Doz <(E-Mail Removed)> wrote:
>
>>Hi all,
>>
>>Is there a site that shows the BT limits for the losses on the line with ADSL
>>distances ?
>>
>>ADSL guide has one here:
>>http://www.adslguide.org.uk/qanda.as...technical#Q211
>>but it's a little out of date as it only mentions upto 2Mbit.
>>
>>What I'm looking for is info on the loss limits that BT specify to enable you to
>>have a particular speed of service.
>>
>
> The higher speeds are based mainly on SNR (Signal to Noise Ratio,
> often called Margin) rather than attenuation (line loss).
>
> There are a couple of sites where you can put in your current figures,
> and it will guess at what you could expect, but not necessarily very
> accurately.

Do you have a link for them ?

On Mon, 15 May 2006, Doz wrote:

> On Mon, 15 May 2006 11:12:01 +0100, Alex Heney wrote:
>
> > There are a couple of sites where you can put in your current
> > figures, and it will guess at what you could expect, but not
> > necessarily very accurately.
>
> Do you have a link for them ?

http://www.adslguide.org.uk/qanda.asp?faq=radsl#Q292

Feeding my own pre-Max values into "Mr. Saffron's estimator" at
http://212.23.23.177/calc.htm gave me a result which was reasonably
close (slightly optimistic) to what I actually got.

On Mon, 15 May 2006 13:29:15 +0100, Doz <(E-Mail Removed)> wrote:

>On Mon, 15 May 2006 11:12:01 +0100, Alex Heney wrote:
>
>> On Mon, 15 May 2006 10:50:31 +0100, Doz <(E-Mail Removed)> wrote:
>>
>>>Hi all,
>>>
>>>Is there a site that shows the BT limits for the losses on the line with ADSL
>>>distances ?
>>>
>>>ADSL guide has one here:
>>>http://www.adslguide.org.uk/qanda.as...technical#Q211
>>>but it's a little out of date as it only mentions upto 2Mbit.
>>>
>>>What I'm looking for is info on the loss limits that BT specify to enable you to
>>>have a particular speed of service.
>>>
>>
>> The higher speeds are based mainly on SNR (Signal to Noise Ratio,
>> often called Margin) rather than attenuation (line loss).
>>
>> There are a couple of sites where you can put in your current figures,
>> and it will guess at what you could expect, but not necessarily very
>> accurately.
>
>Do you have a link for them ?

This is one
<http://212.23.23.177/calc.htm>
--
Alex Heney, Global Villager
What goes around usually gets dizzy and falls over.
To reply by email, my address is alexATheneyDOTplusDOTcom

On Mon, 15 May 2006 17:38:19 +0100, Alex Heney wrote:
<snip>

s that BT specify to enable you to
>>>>have a particular speed of service.
>>>>
>>>
>>> The higher speeds are based mainly on SNR (Signal to Noise Ratio,
>>> often called Margin) rather than attenuation (line loss).
>>>
>>> There are a couple of sites where you can put in your current figures,
>>> and it will guess at what you could expect, but not necessarily very
>>> accurately.
>>
>>Do you have a link for them ?
>
> This is one
> <http://212.23.23.177/calc.htm>



Thnaks guys,

Doz