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AT&S Controlling DSR
The &S command allows the modem to control the state of the DSR (Data Set Ready) signal.
This command will only take effect when the DSR option switch is in the UP position (see your
Dumb Mode Section for details).
%S overrides the &S command.
Options
AT&S0 ■ DSR signal will always be asserted
AT&S1 DSR signal asserted at the start of handshake
AT&S2 DSR signal asserted at end of handshake (before CONNECT message)
Range
0-2
See Also
%S command DSR Control