AT Commands

Command: \Xn

XON/XOFF Pass-Through

Values:

 

n = 0 or 1

Default:

 

0

 

Description:

 

\X0

Modem responds to and discards XON/XOFF characters.

 

 

\X1

Modem responds to and passes XON/XOFF characters.

 

 

Note: This is also controlled via &E6 and &E7.

Command:

-Cn

Data Calling Tone

Values:

 

n = 0 or 1

Defaults:

 

1

 

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: %An Adaptive Answer Result Code Enable

Values:

 

n = 0 or 1

Default:

 

0

 

Description:

 

The %A command controls whether the DATA or FAX result

 

 

codes will be sent by the modem. The modem must be in fax

 

 

mode for this command to work. Also, the modem must be set

 

 

to +FAA=1, which enables the modem to distinguish between

 

 

a fax and a data call. When these commands are enabled, the

 

 

modem sends DATA to the computer when it detects data tones

 

 

and FAX when it detects fax tones. These strings are used by

 

 

some servers to select the appropriate communication program.

 

 

%A0

Disables adaptive answer result codes.

 

 

%A1

Enables adaptive answer result codes.

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.

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Western Telematic MT5634 Command \Xn XON/XOFF Pass-Through, Command Data Calling Tone, Command View Numbers in Blacklist