4 AT Commands, S-Registers, and Result Codes

Command:

&Fn

Load Factory Settings

Values:

 

n = 0

Default:

 

None

Description:

&F0

Load factory settings as active configuration.

Note: See also the Z command.

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.

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Multi-Tech Systems MT5634ZBA Load Factory Settings, 22bis Guard Tone Control, Auxiliary Relay Control, Communications Mode