----------------Original Message: Date: Mon, 12 Mar 2007 13:24:49 -0700 (PDT) From: Fred Cisin <cisin at xenosoft.com> Subject: Re: baud modifier In addition to the speed, are the protocols the same? For example, if you were to just slow down a Bell 212 (1200 bps) modem to 300 bts per second while still using the same frequencies and encoding, that would NOT enable a Bell 103 to be able to communicate. It would ALSO be necessary to switch the encoding to a FSK using the Bell 103 frequencies. I could certainly feed 10 characters per second through a V.90. But that would NOT provide the CCITT V.18? protocol needed for most 110 baud devices. --------------Reply: And then there may be the little matter of RS-232 <> current loop conversion... m