Originally posted here by Und3ertak3r
the use of the term of Modem is technicly correct regardless of wether your talking Dialup, adsl, sdsl, cable or ethernet.. they are ALL MOdulators-DEModulators

they are just interfaces for different mediums...
Incorrect. Modulate means to make adubile, such as the fact that you can hear the audio of a modem when you pick up a telephone on the same line as the modem. Demodulate is to hear this sound and translate it back into data. Cable and Ethernet for sure don't do this, they operate solely on voltages. I'm not positive about DSL but I believe they're of the same manor.