Multi-Tech Systems MT5634ZBAV - Manual (Page 67)

4 AT Commands, S-Registers, and Result Codes
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Command: &F n Load Factory Settings
Values: n = 0
Default: None
Description: &F0 Load factory settings as active configuration.
Note: See also the Z command.
Command: &G n 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: &J n Auxiliary Relay Control
Values: n = 0
Default: 0
Description: &J0 The auxiliary relay is never closed.
&J1 Not supported—responds ERROR.
Command: &K n 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: &M n Communications Mode
Values: n = 0
Defaults: 0
Description: &M0 Asynchronous mode.
&M1 Not supported—responds ERROR.