The way I understand it, is that ADSL modems work in a similar way to dialup
modems, where they scan ranges of frequencies available to negotiate a
connection. If two ADSL modems were to share the one line, the spectrum of
frequencies would have to be shared between the to devices, no? Wouldn't
halving the spectrum half the bandwidth?

----- Original Message -----
From: "LEE Tet Yoon" <leety@ihug.co.nz>
To: "Ben" <eatface@ihug.co.nz>; <adsl@lists.unixathome.org>
Sent: Thursday, January 15, 2004 12:59 AM
Subject: RE: Multiple DSL modems on one Line?

> At 08:34 14/01/2004, Ben wrote:
> >However, multiple modems on one line is a feature of ADSL2 ;)
> >http://www.eetimes.com/story/OEG20020718S0002
> >http://dslforum.org/aboutdsl/ADSL2_wp.pdf (white paper)
>
> I read thorough ADSL2 article on eetimes and skimmed through the
whitepaper just now and I can't seem to find anything which directly
indicates this is true. There is some reference to multiple channels and
maybe this could enable multiple modems on one line? However, it sounds to
me more like it's intended for one modem to be able to have multiple links
for different purposes, e.g. one for voice, one for games, one for normal
data, maybe even a separate one for browsing/small files although this
doesn't rule out using it with multiple modems I suppose depending on how it
works. Or will the ADSL2plus capability of using on certain frequencies
ranges allow this? From what I read, it seems to be to reduce crosstalk
between lines and doesn't seem to be for using different frequencies with
different modems on one line but maybe it would be possible?
>
> One thing I noticed is that it does support bonding several lines
together. But I wonder how many would be willing to pay for this service in
NZ assuming they charge you double JetStream (full) prices and double line
rental... Given that most people including many business are willing to put
up with JetStream Starter because JetStream costs too much.
>
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