3 AT Commands, Result Codes, and S-Registers

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

Self-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.)

 

&Y1

Not supported—responds ERROR.

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 MT5634ZPX-PCI owner manual Data Set Ready DSR Control, Self-Test Commands, View Current Configuration