User guide

70 Cyclades ACS 6000 Advanced Console Server Installation/Administration/User Guide
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.
AT%C0 Disables data compression.
AT%C1 Enables MNP 5 data compression.
AT%C2 Enables V.42 bis data compression (sets S46 bit 1).
AT%C3 Enables V.42 bis and MNP 5 data compression (default).
AT%E0 Disables line quality monitor and auto-retrain.
AT%E1 Enables line quality monitor and auto-retrain.
Table D.2: Basic AT Commands (Continued)
Command Description