David Paste wrote:
As I understand it, ADSL signals are passed along the twisted pair (is
that right?) telephone cables which are the same used for voice calls.
At a much higher frequency, of course. I am also under the impression
that the length of this cable is critical for service quality and
overall data rate (apart from junction / joint quality).

Would using coax for the last stretch to the subscriber's premises
provide any better quality of service?

Only if "the last stretch" was a significant proportion of the total
distance to the exchange, and even then you'd have to have impedance
balancing devices between the twisted pair and the co-ax.

I only ask as my cable service uses coax and I wondered about the
difference.

That's co-ax all the way - or at least until it reaches fibre optic or
some other very fast 'highway', so it's going to be able in principle to
provide a much faster connection.

--
Chris Green
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