06-20-2026, 12:45 PM
(06-19-2026, 11:43 PM)Hans13 Wrote:(06-19-2026, 11:19 PM)admin Wrote: There should never be a linefeed after (or before) a carriage return, per the Hayes command protocol. Doing that would throw off every auto-dialer program out there.
What I mean is that when you type ATD[number] and press enter, it doesn't move down a line but overwrites the ATD command. It this how it always was from the 1980s? Perhaps I am misremembering (very possible as I often experience CRS, lol).
I just looked at my source code (11 years old now). Only CR is sent by the modem in normal mode. LF is also sent if the modem is in verbose mode (AT*V1). This was not commonly used, but is supported for full compatibility.

