User guide

Command Description
ATX4 Enables monitoring of busy tones. Sends all messages (default).
ATZ0 Soft reset.
AT&C0 DCD remains on at all times.
AT&C1 DCD follows the state of the carrier (default).
AT&D0 Ignores DTR.
AT&D1 Enters the escape mode when ON-to-OFF transition is detected on DTR.
AT&D2
Hangs up, assumes command state and disables auto answer upon detecting
ON-to-OFF transition of DTR (default).
AT&D3
ON-to-OFF transition causes the modem to perform a soft reset. It is the same as
if an ATZ command is issued.
AT&F Restores factory configuration.
AT&G0 Disables guard tone (default).
AT&G1 Enables 550-Hz guard tone.
AT&G2 Enables 1800-Hz guard tone.
AT&K0 Disables flow control.
AT&K3 Enables RTS/CTS flow control (default for data modes).
AT&K4 Enables XON/XOFF flow control.
AT&K5 Supports transparent XON/XOFF flow control.
AT&P0 39/61 make/break ratio at 10 pulses per second (default).
AT&P1 33/67 make/break ratio at 10 pulses per second.
AT&P2 39/61 make/break ratio at 20 pulses per second.
AT&P3 33/67 make/break ratio at 20 pulses per second.
AT&Q0 Selects direct asynchronous operation.
AT&Q5 Modem will try an error-corrected link.
AT&Q6
Selects asynchronous operation in normal mode (allows speed buffering and flow
control but no error correction).
AT&V
Displays modem’s current configuration. When this command is entered, the
modem will display its current command and register settings.
83 Cyclades™ ACS 6000 Advanced Console Server Installation/Administration/User Guide