Chapter 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.

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 ac-

 

cording 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.

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Multitech MT5634ZBA-USB manual Load Factory Settings, Command &Gn V.22bis Guard Tone Control, Auxiliary Relay Control