🚀 go-pugleaf

On Fri, 21 Feb 1997 09:35:14 +0000, Stuart Carmichael
<stuartc@europe.shiva.com> wrote:

>phil henry wrote:
>> 
>> On Thu, 20 Feb 1997 19:24:41 GMT, Peter@adelheid.demon.co.uk (Peter G.
>> Strangman) wrote:
>> 
>> >On Thu, 20 Feb 1997 14:43:23 GMT, phil.henry@telcore.demon.co.uk (phil
>> >henry) wrote:
>> >
>> >> An aside: xDSL technologies can put 2-8Mb/s down copper.
>> >>
>> >> However, cable modems won't be on the end of copper.
>> >
>> >Eh? What will they be on then?
>> 
>> Not copper pairs. I believe they will use coax although fibre is
>> possible.
>> 
>> --
>> ________________________________________________________
>> phil henry ...
>
>The whole point of ADSL is that it does use the existing copper 
>pairs that the telcos have already installed.  This means that 
>to roll out ADSL they don't have to relay all the cables to your 
>home, just stick an ADSL modem on each end of the cable (one in 
>your home and one in the local exchange).  The other thing to note
>is that it is Aysmetric, i.e ~6Meg down stream (depending on 
>cable quality/length) for all those lovely web pages and 640k 
>upstream for control information.
>
>if you want more info on this check out 
>http://www.adsl.com/adsl_tutorial.html

The main topic was cable operators and cable modems.

However, there seems to be little news of ADSL work
in the UK. I believe a number of US telcos are trialling
ADSL and US West (?) and SBC are rolling it out this year.
As ever, 'telecomms words' are full of dreams, or
marketing hype. 

I believe ADSL is posing all kinds of problems for telcos
related to cost, wrong kind of pairs already deployed,
network management, business processes,
network archtitecture,  accommodation etc.   



-- 
________________________________________________________
phil henry ...