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Description of commands
The modem can be configured and controlled with the AT-commands listed below.
A/ – Re-execute command
This command differs from the others since it will not be preceded by "AT" and also not terminated by
ENTER.
A – Answer
The modem will wait for a carrier for the time that was specified in S7.
Please also refer to ATDn, S0, S1, S7, S8, S9, S30
\An – Select Maximum MNP Block Size
This command controls the size of data blocks used during connections with MNP, error corrected
links. The value is written to S40 bit 6 and 7.
\A0
64 characters.
\A1
128 characters.
192 characters. (Default)
\A2
\A3
256 characters.
Please also refer to AT\N
&An – Interrupt connection negotiation
Usually the modem will abort the connection negotiation if characters are sent to the serial port dur-
ing negotiation phase.
This command gives a possibility to ignore incoming characters.
&A0
Abort connection negotiation when characters are sent to the serial port. (Default)
&A1
The modem will ignore characters on the serial port during negotiation phase.
Please also refer to AT&D
Bn – Selecting CCITT or BELL
For historical reasons the American standard for 300 and 1200 baud is different than the international.
B0
CCITT-mode (European standard) (Default)
B1
BELL-mode (American phone company)
Please also refer to ATFn, S27
6178-2203
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