
Command Description
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.
AT%E2 Enables line quality monitor and fallback/fall-forward (default).
AT%L Line signal level. Returns a value that indicates the received signal level. Example, 009 = -9dBM.
AT%Q
Line signal quality. Reports line signal quality (DAA-dependent). Returns higher order byte of the EQM value.
Based on EQM value, retrain or fallback/fall-forward may be iniated if enabled with AT%E1 or AT%E2
commands.
AT+MS Select/force modulation.
AT+MS modulation selection
This extended-format compound parameter controls the manner of operation of the modulation capabilities in the
modem. It accepts six sub-parameters:
+MS=<carrier>, <automode>, <min_tx_rate>, <max_tx_rate>, <min_rx_rate), <max_rx_rate><CR>.
To read the current settings, enter AT+MS?<CR>
Modulation Carrier Description
Bell 103 B103 300
Bell 212 B212 1200
V.21 V21 300
V.22 V22 1200
Table E.3: +MS Command Supported Rates
66 Cyclades™ ACS 6000 Advanced Console Server
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