> his point is that the only (apparent) differences are the
 > terminal controllers... everything else is the same...
 > following up on this logic, one would speculate that the
 > cost of the lines would be the same, as well, and that the
 > only cost differences would be for the terminal adapters.

     Oh.  Then he is probably wrong.  The cost fo the terminal controller
is, from what I have been told, less.  The speed of the data over the
channel, while asymetric is still higher in both directions than ISDN.  The
infrastructure needed to support ADSL is, from what I have read, less.

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