>  Regular copper phone lines are limited to a frequency of about 2800hz.
>
That is a limitation of the terminal equipment at the phone company,
not a limitation of the coppper wire.  The TELCO limits the
bandwidth so that they can cram more conversations into less
space.  With the old carrier systems, several conversations
(channels) were stacked on to one copper pair.
> I'm afraid that we have reached the limit of analog modem speed.
> Until they rewire the world with fiber and digital transmission from
> the end point, your home or business, it is physically impossible with
> existing hardware to go any further.
There is a version of ATM, Asynchronous Transfer Mode, that is
designed to work over a single copper pair.  The fast side of
that is something over 1 Megabits per second.
> With the government holding the phone companies ability to
> compete hostage, I can't see them spending
> billions to create a system they are not allowed to market.
I don't know what you mean?
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