ModemModule Developer’s Guide

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:

&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:

&Pn

Pulse Dial Make-to-Break Ratio Selection

Values:

 

n = 0, 1, or 2

Default:

 

0

Description:

&P0

60/40 make-to-break ratio

 

&P1

67/33 make-to-break ratio

 

&P2

20 pulses per second

Note: The &P command is used only in Japan.

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.

 

 

at power-on or following the ATZ command.

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.

Command:

&Wn

Store Current Configuration

Values:

 

n = 0

Default:

 

0

Description:

&W0

Stores current modem settings in non-volatile memory and causes them to be loaded at power-on

 

 

or following the ATZ command instead of the factory defaults. See also the &F command.

 

&W1

Clears user default settings from non-volatile memory and causes the factory defaults to be

 

 

loaded at power-on or following the ATZ command.

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MT3334SMI

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Multi-Tech Systems MT3334SMI manual Command &Fn Load Factory Settings, 22bis Guard Tone Control, Flow Control Selection