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

 

 

 

Command:

\Vn

Protocol Result Code

Values:

 

n = 0, 1, or 2

Default:

 

1

Description:

\V0

Disable the appending of the protocol result code to the DCE speed.

 

\V1

Enable the appending of the protocol result code to the DCE speed.

 

\V2

Same as \V1.

Command:

\Xn

XON/XOFF Pass-Through

Values:

 

n = 0 or 1

Defaults:

 

0

Description:

\X0

Modem responds to and discards XON/XOFF characters.

 

\X1

Modem responds to and passes XON/XOFF characters.

Command:

-Cn

Data Calling Tone

Values:

 

n = 0 or 1

Defaults:

 

0

Description: -C0 Disable V.25 data calling tone to deny remote data/fax/voice discrimination.

 

-C1

Enable V.25 data calling tone to allow remote data/fax/voice discrimination.

Command:

%B

View Numbers in Blacklist

Values:

 

n/a

Description:

 

If blacklisting is in effect, AT%B displays the numbers for which the last call attempted in the

 

 

previous two hours failed. In countries that do not require blacklisting, the ERROR result code

 

 

appears.

Command:

%Cn

Data Compression Control

Values:

 

n = 0 or 1

Default:

 

1

Description:

%C0

Disable V.42bis/MNP 5 data compression.

 

%C1

Enable V.42bis/MNP 5 data compression.

Command: %DCn AT Command Control

Values:

 

n = 0 or 1

Default:

 

0

Description: %DC0

The modem responds to AT commands.

 

%DC1

The modem ignores AT commands.

Note: The modem will respond to AT%DC for 10 seconds after power-up.

Command: %En Fallback and Fall Forward Control

Values:

n = 0, 1, or 2

Default:

2

Description: %E0

Disable fallback and fall forward.

%E1

Enable fallback, disable fall forward.

%E2

Enable fallback and fall forward.

Command: #Sx

Enter Setup Password

Values:

x= password (1–8 characters, case sensitive)

Default:

MTSMODEM

Description:

Enters the remote configuration setup password.

Command: #S=x Store Setup Password

Values:

x= password (1–8 characters, case sensitive)

Default:

MTSMODEM

Description:

Stores a new remote configuration setup password.

MT4X56USB

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Multi-Tech Systems MT4X56USB Vn Protocol Result Code, Xn XON/XOFF Pass-Through, Data Calling Tone, Enter Setup Password