> -----Original Message-----
> From: IBM Mainframe Discussion List On Behalf Of Chris Mason
>
> John
>
> So we have a fancy new name for antediluvian frequency
> division multiplexing
> (FDM) - or am I missing something?
>
> From the provided URL for DWDM: "DWDM works by combining and
> transmitting multiple signals simultaneously at different
> wavelengths on the same fiber."
>
> I never heard of FDM being described as "in effect, one
> copper wire transformed into multiple virtual copper wires."
> I guess teleprocessing folk of the past lacked imagination.
Now, if plumbers could adapt that technique, we wouldn't need separate
hot- and cold-water pipes in our houses. :-)
They already have the "multiplexer"; designing the "demultiplexer" will
be the real bear.
-jc-
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