rp wrote:

Ken Blake wrote:

What I wrote is my understanding of how it works. If you want more
details, sorry, I'm the wrong person to ask and I can't provide
them.

You are the one saying it's not a modem and yet you don't understand
how it works! Paul gives a good description but note that the word
modulation is used.

modem = modulation/demodulation
^^^________^^^

http://www.thefreedictionary.com/Modulator-Demodulator

Paul mentioned both in his article.