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LEONARDO 56
AT%C COMPRESSION CONTROL
%C0
Compression disable.
%C1
MNP5 enable only.
%C2
V42bis enable only.
%C3
MNP% and V42bis enable.
AT%E AUTORETRAIN CONTROL
%E0
Autoretrain disable.
%E1
Autoretrain enable.
%E2
Fallback/fallforward enable. Enable only in error corrector or buffer
mode.
AT%L DISPLAY RECEIVE LEVEL IN DBM
Returns a value which indicates the received signal level.
For example, 009 = -9 dBm, 043 = -43 dBm.
AT%Q LINE SIGNAL QUALITY
From 000 (good quality) to 127 (poor quality, disturbed signal).
AT&C CARRIER DETECT OPTION
&C0
Carrier detect always ON. When modem disconnect DCD (C109)
goes OFF for 1 sec.; function 109 wink.
&C1
Carrier detect is ON when remote carrier is present.
AT&D
DATA TERMINAL READY OPTION
&D0
DTR signal is ignored.
&D1
Modem return to Command Mode upon detecting ON to OFF
transition on DTR.
&D2
Modem hangs up and disables auto-answer upon detecting ON
to OFF transition on DTR.
&D3
Modem reset upon detecting ON to OFF transition on DTR.
AT&F
FACTORY CONFIGURATION
&F0
Load factory configuration 0.
&F1
Load factory configuration 1.
AT&G GUARD TONE
&G0
Disable Guard Tone.
&G2
Select 1800 Hz Guard Tone. Only in V.22 (1200 bps) and V.22 bis
(1200 bps) modulations.
Modem AT Command Set
3.7
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