Whats id the difference between ASDL2 & SDSL?

Hi there,

Our area is soon to be switched on to Broadband (not by BT that is some 10
months away) but another provider who is working in conjunction with our
Distict Council.

Trilogy offer ASDL2 & SDSL but I am not 100% sure the difference. Can anyone
tell me? Also I have a friend who works at BT as I mentioned that their
service can reach between 10km (256 kbps) & 2km (4 bps) from the exchange
and he said BT only reach arounf 2km from exchange. I spoke to Trilogy and
they said they are adding their own hardware on the exchange. Whi is
correct?

Many thanks

Sorry I forgot, what are the nomal contention ratio s for the likes of BT
and Wannadue 50:1?

Thanks

Karl Bedingfield wrote:

> Sorry I forgot, what are the nomal contention ratio s for the likes of BT
> and Wannadue 50:1?
>

Eh? The contention rate is 50:1



--
David Precious
http://www.preshweb.co.uk/

Yes.

"Karl Bedingfield" <(E-Mail Removed)> wrote in message
news:415fa620@212.67.96.135
> Our area is soon to be switched on to Broadband (not by BT that is
> some 10 months away) but another provider who is working in
> conjunction with our Distict Council.
>
> Trilogy offer ASDL2 & SDSL but I am not 100% sure the difference. Can
> anyone tell me?

ADSL2 is basically ADSL with a few minor differences/improvements (as far as
most people are concerned)

ADSL is a DSL line which is faster in one direction - normally it means you
can download faster than you can upload.

This is the type of service most people are on, as they tend to download
much more than they "upload"

SDSL basically means both your upload and download speed are the same - this
is more useful for businesses.

>Also I have a friend who works at BT as I mentioned
> that their service can reach between 10km (256 kbps) & 2km (4 bps)
> from the exchange and he said BT only reach arounf 2km from exchange.
> I spoke to Trilogy and they said they are adding their own hardware
> on the exchange. Whi is correct?

Both are correct - it sounds as if you are on one of the exchanges where
Trilogy are installing their own equipment (before BT is) and thus able to
offer their own ADSL services..

Regards
Sunil

"Karl Bedingfield" <(E-Mail Removed)> wrote in message
news:415fa6e5@212.67.96.135...
> Sorry I forgot, what are the nomal contention ratio s for the likes of BT
> and Wannadue 50:1?

normal "consumer" broadband is 50:1

ISPs can buy BT DSLAM access in a couple of ways - if they buy IPstream only
then the 50:1 ratio is the default for the consumer service. BT also do
business lines at 20:1

If the ISP takes an ATM service (Datastream, which initially was intended
for business or private networks using DSL), then the contention ratio comes
from the backhaul pipe size and the number of DSL lines set up - the ISP can
choose any ratios they want.

There are services giving 10:1 and even 1:1 built with ATM - but lower
contention ratios cost more.

If you really want to know more then BT publish the price lists online
http://www.serviceview.bt.com/list/c...cs/maintoc.htm
>
> Thanks
--
Regards

Stephen Hope - return address needs fewer xxs

"Karl Bedingfield" <(E-Mail Removed)> wrote in message news:<415fa6e5@212.67.96.135>...
> Sorry I forgot, what are the nomal contention ratio s for the likes of BT
> and Wannadue 50:1?
>
> Thanks

Wanadoo and BT's home services are set at 50:1, the business class
services offer 20:1, while the majority of SDSL services (provided by
BT Wholesale) are 10:1.

Some ISP's can control their own contention ratios if they use BT
Wholesale's Datastream service or install their own kit at BT's
exchanges (this is known as Local Loop Unbundling - LLU). Trouble is
certain ISP's (like Tesco) will severly abuse the contention ratios to
get more subscribers signed up to them (this is known as overbooking)
and the quality of service goes downhill.

As for ADSL2, this is just a new variant using similar technology to
provide faster speeds and better reach. Trilogy use it provide higher
upload speeds. This technology will eventually be superceded by
ADSL2+ which can be used in two modes - really fast speeds if you're
close to the exchange or improving the reach and enabling customers
who previously were unable to get broadband - have it.

Hi Sunil,

Correct, BT is not enabling the exchange until June 2005 while Trilogy have
just gone live with their own equipment. Is this a good thing or is there
any sense in waiting until BT go live? I may have gone with BT but I can't
wait that long.

They said they would have gone live much sooner but BT have been far from
helpful in getting lines checked apparantly.

Karl

Hi Karl.

As far as I know BT have removed virtually all their line limits on the 512k
Service apart from some isloted rural areas. In fact you should be able to
get a 1 meg service in most locations.

ADSL is where have a slower upstream path say 220k and 512k Downstream. With
SHDL its 512k or 1 meg or whatever both ways. ADSL will be fine for domestic
use.

Hope that helps,

Ian.
"Karl Bedingfield" <(E-Mail Removed)> wrote in message
news:415fa620@212.67.96.135...
> Hi there,
>
> Our area is soon to be switched on to Broadband (not by BT that is some 10
> months away) but another provider who is working in conjunction with our
> Distict Council.
>
> Trilogy offer ASDL2 & SDSL but I am not 100% sure the difference. Can
> anyone tell me? Also I have a friend who works at BT as I mentioned that
> their service can reach between 10km (256 kbps) & 2km (4 bps) from the
> exchange and he said BT only reach arounf 2km from exchange. I spoke to
> Trilogy and they said they are adding their own hardware on the exchange.
> Whi is correct?
>
> Many thanks
>

"Karl Bedingfield" <(E-Mail Removed)> wrote in message
news:41604dda@212.67.96.135
> Correct, BT is not enabling the exchange until June 2005 while
> Trilogy have just gone live with their own equipment. Is this a good
> thing or is there any sense in waiting until BT go live? I may have
> gone with BT but I can't wait that long.

Well if you can't wait that long - you don't have much choice but to go for
Trilogy's offering.

Of course, after BT have installed their own equipment - you have the chance
to change ISP if you want.

Regards
Sunil