3 - AT Commands, S-Registers and Result Codes

Command:

&Qn

Asynchronous Communications Mode

Values:

n = 0, 5, or 6

Defaults:

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.

Command:

&Sn

Data Set Ready (DSR) Control

Values:

n = 0 or 1

Default:

0

 

Description: &S0

Force DSR high (on).

 

&S1

Let DSR follow CD.

Command:

&Tn

Test Commands

Values:

n = 0, 1, 3 or 6

Default:

None

 

Description: &T0

Abort. Stop any test in progress.

 

&T1

Local analog loop test.

 

&T3

Local digital loopback test.

 

&T6

Remote digital loopback test.

Command:

&V

View Current Configuration

Values:

n/a

 

Description:

 

Displays the active modem settings.

Command:

&Wn

Store Current Configuration

Values:

n = 0

 

Default:

None

 

Description: &W0

Store active modem settings in NVRAM; load them

 

 

at power-on or following the ATZ command instead

 

 

of loading the factory defaults from ROM.

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.)

Command:

&Zn=x

Store Telephone Number

Values:

n = 0, 1, 2 or 3

 

x = Dialing string

Default:

None

 

Description:

 

Stores telephone dial string x in memory location

 

 

n. Dial the stored number using the command

 

 

ATDS=n.

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Multi-Tech Systems MT3334ZDXV owner manual ATDS=n