Chapter 4 - AT Commands, S-Registers and Result Codes

 

 

 

Command:

&Wn

Store Current Configuration

Values:

 

n = 0

Default:

 

None

Description:

&W0

Stores current modem settings in nonvolatile 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 nonvolatile memory and causes the factory defaults to be loaded

 

 

at power-on or following the ATZ command.

Command:

&Yn

Select Stored Configuration for Hard Reset

Values:

 

n = 0

Default:

 

0

Description:

&Y0

Select stored configuration 0 on power-up. (For backward compatibility with some software.)

 

&Y1

Not supported—responds ERROR.

Command: &Zy=x Store Dialing Command

Values:

 

y = 0–3 (callback security disabled) or 0–29 (callback security enabled)

 

 

x = Dialing command

Default:

 

None

Description:

 

Stores dialing command x in memory location y. Dial the stored number using the command

 

 

ATDS=y. See also the #CBSn command. For callback security options, see Chapter 6.

Command:

\An

Select Maximum MNP Block Size

Values:

 

n = 0, 1, 2, or 3

Default:

 

3

Description:

\A0

64-character maximum.

 

\A1

128-character maximum.

 

\A2

192-character maximum.

 

\A3

256-character maximum.

Command:

\Bn

Transmit Break

Values:

 

n = 0–9 in 100 ms units

Default:

 

3

Description:

 

In non-error-correction mode only, sends a break signal of the specified length to a remote

 

 

modem. Works in conjunction with the \K command.

Command:

\Gn

Modem Port Flow Control

Values:

 

n = 0

Default:

 

0

Description:

\G0

Returns an OK for backward compatibility with some software.

 

\G1

Not supported—responds ERROR.

Command:

\Jn

Data Buffer Control

Values:

 

n = 0

Default:

 

0

Description:

\J0

Enable data buffer—serial port speed is independent of connect speed.

 

\J1

Disable data buffer—serial port speed is forced to the line speed.

MT4X56USB

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Multi-Tech Systems MT4X56USB Store Current Configuration, Select Stored Configuration for Hard Reset, Bn Transmit Break