Westermo TD-23 Manual de instalación descargar pdf (Pagina 15)

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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.

\A2 192 characters. (Default)

\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

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Westermo TD-23 Manual de instalación Pagina 15