solarwind wrote:
> * First question. How does this work? How do the signals NOT interfere
> with each other on the line?

I didn't follow the link, but DSL and voice are separated in frequency
space.  This is a lot like why multiple radio stations don't interfere with
each other even though they transmit over the same medium.

> * It appears that my phone line has only two wires. Is this a twisted
> pair?

Yes.

> I'm guessing not because I don't see a third ground line.

"Pair" means 2.

> * If it's not twisted pair, how is ADSL able to operate at such high
> speeds (10 mbit/s) reliably?

I didn't think it went that high, and it's not totally reliable either.  The
DSL speed you get has a lot to do with how far you are from the central
office, or at least how far from where the medium switches from fiber to
copper pair.  After a mile or two (?) the phone company doesn't even offer
DSL because they know the signals wouldn't get there with sufficient
signal/noise ratio.  Look at the fine print and you'll see a big gap between
the hype and what you're actually guaranteed to get.


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