3. AT Commands

Command: AT

Attention Code

Values:

N/A

Description:

The attention code precedes all command lines except A/,

 

A: and escape sequences.

Command:

[Enter] Key

Values:

N/A

Description:

Press the [Enter] (RETURN) key to execute most

 

commands.

Command: A

Answer

Values:

 

N/A

 

Description:

 

Answer call before final ring.

Command:

A/

Repeat Last Command

Values:

 

N/A

 

Description:

 

Repeat the last command string. Do not precede this

 

 

command with AT. Do not press [Enter] to execute.

Command:

Bn

Communication Standard Setting

Values:

 

n = 0–3, 15, 16

Default:

 

0 and 15

Description:

 

B0

Select ITU-T V.22 mode when modem is at 1200 bps.

 

 

B1

Select Bell 212A when modem is at 1200 bps.

 

 

B2

Deselect V.23 reverse channel (same as B3).

 

 

B3

Deselect V.23 reverse channel (same as B2).

 

 

B15

Select V.21 when the modem is at 300 bps.

 

 

B16

Select Bell 103J when the modem is at 300 bps.

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Western Telematic MT5634 manual AT Commands