Sean Breheny wrote:
> If it were a purely analog line
> then the throughput would be governed by the bandwidth (fixed at about
> 8kHz) and the signal to noise ratio (which could always be improved
> and so does not impose a theoretical limit).

But it's not a purely analog line and it does have inherent signal to noise
limits.  The ends may be analog, but everything in between is digital.  Eve=
n
if the analog ends are perfect, the digitization sets a upper limit on the
signal to noise ratio.


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