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AT Commands (cont'd)
Command
Description
&D1
Go to command mode on ON-to-OFF
DTR transition
&D2
Hang-up and go to command mode on ON-
to-OFF DTR transition. Disable auto
answer
&D3
Reset on ON-to-OFF DTR transition
&F
Recall default setting
&G0
Disable guard tone
&G1
Disable guard tone
&G2
Enable 1800Hz guard tone
&K0
Disable flow control
&K3
Enable RTS/CTS flow control
&K4
Enable XON/XOFF flow control
&K5
Enable transparent XON/XOFF flow
control
&K6
Enable both RTS/CTS and XON/XOFF
flow control
&P0
Set 10pps pulse dial with 39% make/break
ratio
&P1
Set 10pps pulse dial with 33% make/break
ratio
&P2
Set 20pps pulse dial with 39% make/break
ratio
&P3
Set 20pps pulse dial with 33% make/break
ratio
&Q0
Select direct asynchronous operation
&Q5
Select to try a reliable (error-corrected)
link
&Q6
Select normal (speed-buffering) mode
&S0
DSR always active
&S1
DSR is on during carrier is detected
&V
Display current configuration
\N0
Select normal mode connection
Default
X
X
X
X Fax
X
X
X
Modem Commands A-3
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