4 AT Commands, S-Registers, and Result Codes

Command:

&Tn

V.54 Test Commands

Values:

 

n = 0, 1, 3 or 6

Default:

 

None

Description:

&T0

Abort. Stop any test in progress.

 

&T1

Local analog loopback test.

 

&T3

Local digital loopback test.

 

&T6

Remote digital loopback test.

Note: To stop a test, you must use the escape sequence (+++AT) before typing

AT&T0.

Command:

&V

Display Current Settings

Values:

 

n/a

Description:

 

Displays the active modem settings, including the callback se-

 

 

curity settings if callback security is enabled. If the setup pass-

 

 

word has been entered, it also displays the callback security

 

 

passwords.

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 com-

 

 

mand.

 

&W1

Clears user default settings from nonvolatile memory and

 

 

causes the factory defaults to be loaded at power-on or follow-

 

 

ing 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:

&&S

Speaker Codec Loopback

Values:

 

n/a

Description:

 

Provides a loopback from the microphone to the speaker. For

 

 

testing and debugging only.

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Multi-Tech Systems MT5634MSV Test Commands, Display Current Settings, Store Current Configuration, Store Dialing Command