Multitech MultiModem MT4X56USB User Manual page 44

MultiModemUSB User Guide
Command: &Gn V.22bis Guard Tone Control
Values: n = 0, 1, or 2
Default: 0
Description: &G0 Disable guard tone.
&G1 Set guard tone to 550 Hz.
&G2 Set guard tone to 1800 Hz.
Note: The &G command is not used in North America.
Command: &Jn Auxiliary Relay Control
Values: n = 0
Default: 0
Description: &J0 The auxiliary relay is never closed.
&J1 Not supported—responds ERROR.
Command: &Kn Flow Control Selection
Values: n = 0, 3, or 4
Defaults: 3
Description: &K0 Disable flow control.
&K3 Enable CTS/RTS hardware flow control.
&K4 Enable XON/XOFF software flow control.
Command: &Mn Communications Mode
Values: n = 0
Defaults: 0
Description: &M0 Asynchronous mode.
&M1 Not supported—responds ERROR.
Command: &Qn Asynchronous Communications Mode
Values: n = 0, 5, 6, 8, or 9
Default: 5
Description: &Q0 Asynchronous with data buffering. Same as \N0.
&Q5 Error control with data buffering. Same as \N3.
&Q6 Asynchronous with data buffering. Same as \N0.
&Q8 MNP error control mode. If MNP error control is not established, the modem falls back according
to the setting in S36.
&Q9 V.42 or MNP error control mode. If neither error control is established, the modem falls back
according to the setting in S36.
Command: &Sn Data Set Ready (DSR) Control
Values: n = 0 or 1
Default: 0
Description: &S0 Force DSR always high (on).
&S1 Let DSR go high only during a connection.
Command: &Tn V.54 Test Commands
Values: n = 0, 1, 3 or 6
Default: None
Description: &T0 Abort. Stop any test in progress.
&T1 Local analog loopback test.
&T3 Local digital loopback test.
&T6 Remote digital loopback test.
Note: To stop a test, you must use the escape sequence (+++AT) before typing AT&T0.
Command: &V Display Current Settings
Values: n/a
Description: Displays the active modem settings, including the callback security settings if callback security is
enabled. If the setup password has been entered, it also displays the callback security passwords.
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