[plug] OT: ADSL Exchanges (again)

[Justin]

True, except you now need to install DSLAM's in the RIM - which as far as i 
know is not going to happen.

Justin

At 09:31 AM 21/06/2002 +0800, you wrote:
>I don't think that is right (see below).
>
>The box on the estate can be viewed as a mini-exchange if you like.  It
>doesn't matter what technology you use, the local loop (copper wire between
>customer and exchange) can only ever carry up to 4000 Hz.  Think of it like
>a freeway with 4000 vehicles passing a point in a given time.  If those
>vehicles contain only one person your baud rate is 4000 bits per whatever;
>but if they are 4000 ADSL buses each with 50 persons on board then the same
>number of packets deliver 200,000 bits per whatever,  and if you put in a
>second freeway (wire), you can double that again.  Mobile phones can only
>send/receive 19,000 bps, but by using three channels (frequencies) this can
>be boosted to 67K. Getting back to telephone wires, the shorter the distance
>between user (copper wire) and the exchange (fibre) the better, so if R.I.M.
>is as you say it is, I would say you have much more chance of getting ADSL
>than someone who lives further away from an old fashioned exchange.
>
>
>James Elliott
>Ravensthorpe Computers
>ABN 34 305 232 710
>Tel:   08 9838 1043
>Fax:  08 9838 1049
>Cell:  0428 39 6052
>E-mail:  James.Elliott at wn.com.au
>Australia Post:
>PO Box 228, Ravensthorpe WA 6346
>----- Original Message -----
>From: "Justin" <justin at inwa.com.au>
>To: <plug at plug.linux.org.au>
>Sent: Friday, June 21, 2002 8:33 AM
>Subject: RE: [plug] OT: ADSL Exchanges (again)
>
>
> > At 07:32 AM 21/06/2002 +0800, you wrote:
> >  >What's a RIM, and how does it affect the Brooklands end of the world?
> >  From my limited knowledge a R.I.M. is a way for Telstra to save money
>when
> > they setup small estates.
> > Basically they chuck fibre from an exchange out to a box in your estate,
> > then run the copper from there.
> >
> > Unfortunately ADSL needs copper all the way to the exchange, so if you are
> > on a R.I.M. - you don't get ADSL.
> >
> > Someone correct me if i am wrong, otherwise HTH
> >
> > Justin
> >
> >