S<Value>-Data Set Ready (Dsr) Option; T<Value>-Self-Test Commands - US Robotics 56 K SOFTMODEM - COMMAND REFERENCE REV 1 Command Reference Manual

Result codes:
Command
&Q0 Asynchronous mode, buffered. Same as \N0.
&Q5 Error control mode, buffered (default). Same as \N3.
&Q6 Asynchronous mode, buffered. Same as \N0.
&Q8 MNP error control mode. If an MNP error control protocol is not established, the modem will
fall back according to the current user setting in register S36.
&Q9 V.42 or MNP error control mode. If neither error control protocol is established, the modem
will fall back according to the current user setting in register S36.
&S<value>—Data Set Ready (DSR) Option
Command
&S0 DSR is always on (default).
&S1 DSR comes on after establishing a connection and goes off when the connection ends.
&T<value>—Self-Test Commands
Result codes:
asynchronous communication mode is to use the \N<error control mode>
command.
OK if <value> = 0, 5, 6, 8, or 9.
ERROR if <value> does not equal 0, 5, 6, 8, or 9.
Table 3-29: &Q<value> Commands
Use this command to controls DSR action. Result codes:
OK if <value> = 0—1.
ERROR if <value> does not equal 0—1.
Table 3-30: &S<value> Commands
Use this command to perform diagnostic tests on the modem. Each test is
designed to isolate a problem location when experiencing periodic data loss or
random errors.
OK if <value> = 0.
CONNECT if <value> = 1, 3, or 6.
ERROR if <value> does not equal 0, 1, 3, or 6.
Function
Function
56K Softmodem
Command Reference
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