[ILUG] Fw: [CLUG] ADSL

[Dermot McNally]

Colm Buckley wrote:

> What?  ADSL uses a broadband signal, which doesn't (shouldn't)
> interfere with the baseband POTS signals on the line - there's no need
> to "piggyback" POTS on top of ADSL or anything like that.  I'm not
> sure about ISDN, but I think ISDN is also a baseband signal, so the
> same principle should apply.

Well, maybe that's how it was done - the kit they supply you with
consists of what they call a "splitter" which provides you with two
ports, one for your ISDN NTBA and the other for your ADSL "Modem" - so
yes, both services run over the same pair, but I can't be sure about the
mechanics of what the splitter actually does.

> The most sensible pricing structure would be to continue to charge for
> line rental and phone calls as previously, with an additional flat fee
> for ADSL, possibly with a high-usage tariff.  This seems to be the
> model which is followed in most other countries using the system.  Of
> course, it being *sensible* doesn't mean it will *happen*...  we can
> but hope.

I'd actually prefer the approach they took in Germany, where they
charged you a rental for "Everything the copper does", ADSL and ISDN.
What I didn't like about their approach (and it doesn't look like ESAT
are doing this) is that they sold the Internet access by the hour -
using PPPoE allowed them to require you to bring the link up and down as
required, you paid for 50 or 100 hours per month, then paid by the
second thereafter. Link up and down was instant, but it was still a
bummer when it could have been an always-on service.

Dermot

--
---------------------------------------------------------------
Dermot McNally, Chief Technical Officer, Directski.com
dermot at directski.com     http://www.directski.com - ski the web