Most telephone people moan on and on about the bandwidth capability of telephone cable. The theoretical
bandwidth of phone lines is about 4-5 kHz. So, instead of being your average modem, Im guessing that the
"Black Box" Genesis use uses maybe 3Khz for bandwidth modem style, and then uses serious multiplexing of
signals in the other 1.5kHz, increasing the range of data that can be transmitted dramatically. Most modems
only multiplex data using amplitude modulation, frequency modulation, or some other form that I cant
remember, possibly due to some college social hangover ...
56k standard is also about 3-4 years old, no one ever said that would be the last system to transmit data on
good old copper phone lines.
--
Owen Kelly
okelly at solas-data.ie
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