John Levine (johnl@iecc.com) 23 Jan 2006 19:05:25 -0000

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> That's true. I felt the original posting implied that Hayes invented > something entirely new; which wasn't quite true. As far as I know, his was the first modem to use in-band signalling. It was really rather clever to build a UART into the modem and use it to let the computer control the modem over the same channel as it used to communicate with the remote system. In-band signalling has its problems (that's what made blue boxes possible) but in this case it let people hook up modems to their PCs using a cheap generic serial interface. R's, John

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