Allied Data Technologies TRON SECURE 33.6, Руководство пользователя

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3.4 Explanation of the AT commands
Discussing the commands is done in alphabetical order. The survey is on the previous pages. With
each command, the factory setting is mentioned. For normal operation the factory setting does
not have to be changed.
A/ Repeat last command
The modem reacts to this command as if the previous command was given again by the
terminal. For this command, no AT may be given and it is also not allowed to close it with
a carriage return.
AT=x Write to selected S register
This command writes the value of x to the selected S register.
An S register can be selected by using the ATS command. See also ATS.
AT? Show content of selected S register
This command gives the value of the selected S register.
An S register can be selected by using the AT= command. See also ATS.
ATA Answer
The ATA command puts your modem on-line in answer-mode.
If no carrier is detected during the period determined by register S7 (default 60
seconds), the modem will switch to off-line.
Each character entered while the mode tries to get a connection, aborts the attempt
immediately.
AT\A Select maximum MNP block size
The modem will work in an MNP error correction mode with a maximum block size
indicated in the table below.
0 - 64 characters
1 - 128 characters (default)
2 - 192 characters
3 - 256 characters
ATB CCITT or BELL
The modem will select the CCITT or BELL modulation for connections at a speed of 300
or 1200 bps, depending on the entered parameter.
Each other speed uses the CCITT modulation standard.
0 - select CCITT modulation (default)
1 - select BELL modulation
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