Loss Limits For 1Mb and above?

Just had a BT engineer do a line test. The result was 43dB.
He said this will allow 512Kb but not 1Mb, but I thought I've read somewhere
the limit for 1Mb was now 45dB?

Any advice?

TIA

"PsychicStickleBrick" <(E-Mail Removed)> wrote in message
news:bvquvr$l3h$(E-Mail Removed)...
> Just had a BT engineer do a line test. The result was 43dB.
> He said this will allow 512Kb but not 1Mb, but I thought I've read
somewhere
> the limit for 1Mb was now 45dB?

Its 41dB if there is no ADSL equipment on the line.

45dB if the line has already been enabled.

Regards
Sunil

"PsychicStickleBrick" <(E-Mail Removed)> wrote in message
news:bvquvr$l3h$(E-Mail Removed)...
> Just had a BT engineer do a line test. The result was 43dB.
> He said this will allow 512Kb but not 1Mb, but I thought I've read
somewhere
> the limit for 1Mb was now 45dB?
>
Are those Line Attenuation or SNR margin figures?
Chris

"Sunil Sood" <(E-Mail Removed)> wrote in message
news:bvqvhn$v61rl$(E-Mail Removed)...
>
> "PsychicStickleBrick" <(E-Mail Removed)> wrote in message
> news:bvquvr$l3h$(E-Mail Removed)...
> > Just had a BT engineer do a line test. The result was 43dB.
> > He said this will allow 512Kb but not 1Mb, but I thought I've read
> somewhere
> > the limit for 1Mb was now 45dB?
>
> Its 41dB if there is no ADSL equipment on the line.
>
> 45dB if the line has already been enabled.
>
> Regards
> Sunil
>
>
Thanks Sunil, what are the chances of making a "manual order" for a new line
and specifying I want it for "1Mb ADSL" (ie if it can't provide a 1Mb service
then I don't pay)? Would they accept this or will they only accept a
specification for "ADSL" (whatever the speed) - which would be pointless as I
can already get 512kb on my current line?

"PsychicStickleBrick" <(E-Mail Removed)> wrote in message
news:bvr07k$l3h$(E-Mail Removed)...
>
> Thanks Sunil, what are the chances of making a "manual order" for a new
line
> and specifying I want it for "1Mb ADSL" (ie if it can't provide a 1Mb
service
> then I don't pay)? Would they accept this or will they only accept a
> specification for "ADSL" (whatever the speed) - which would be pointless
as I
> can already get 512kb on my current line?

A "manual order" is for ADSL - it sounds to me that you are talking about
having a new BT line put in..

You can certainly order a new BT line and specify while ordering that it
must be suitable for 1MB (or even 2MB - the line limit is the same).

It is then up to BT if they proceed with the order or cancel it having
decided what you want is not achieveable.

If they install the line and it then can't reach the specified speed they
should then remove the line and refund the installation fee (£74.99) - just
ensure that it is mentioned in the order notes (ring back and check etc)

The other option is that BT are currently trialling the option where ISP's
order new lines (and ADSL) on behalf of a customer - you could try that
instead.

I know A&A are taking part in the trial and I imagine you may be able to
find a few other ISP's as well...

Regards
Sunil

On Wed, 4 Feb 2004 14:29:35 -0000, "Chris Watts" <(E-Mail Removed)>
wrote:

>Are those Line Attenuation or SNR margin figures?

the former. 45 dB of SNR would be orgasmic.

Phil

"Phil Thompson" <(E-Mail Removed)> wrote in message
news:(E-Mail Removed)...
> On Wed, 4 Feb 2004 14:29:35 -0000, "Chris Watts" <(E-Mail Removed)>
> wrote:
>
> >Are those Line Attenuation or SNR margin figures?
>
> the former. 45 dB of SNR would be orgasmic.
Oh? On my line the Line Attenuation is approx 19dB and the SNR margin is
about 41 - and it works just fine with 512k adsl!
Chris

On Wed, 4 Feb 2004 18:49:59 -0000, "Chris Watts" <(E-Mail Removed)>
wrote:

>the SNR margin is
>about 41 - and it works just fine with 512k adsl!

of course it does, bigger is better. Worry when it gets to 6 dB

Phil

Chris Watts wrote:
> "PsychicStickleBrick" <(E-Mail Removed)> wrote in message
> news:bvquvr$l3h$(E-Mail Removed)...
>> Just had a BT engineer do a line test. The result was 43dB.
>> He said this will allow 512Kb but not 1Mb, but I thought I've read
>> somewhere the limit for 1Mb was now 45dB?
>>
> Are those Line Attenuation or SNR margin figures?
> Chris

Line loss

Sunil Sood wrote:

>
> "PsychicStickleBrick" <(E-Mail Removed)> wrote in message
> news:bvquvr$l3h$(E-Mail Removed)...
> > Just had a BT engineer do a line test. The result was 43dB.
> > He said this will allow 512Kb but not 1Mb, but I thought I've read
> somewhere
> > the limit for 1Mb was now 45dB?
>
> Its 41dB if there is no ADSL equipment on the line.
>
> 45dB if the line has already been enabled.
>
> Regards
> Sunil
>
>
Do you know if BTs' measurments generally agree with those reported by a
modem?

My line is 3km (from the line test long ago) but attenuation 48/49, not
that I can afford it anyway, but it would be nice to know.

TIA

Andy.