Modem Commands A-3
AT Commands (cont’d)
Command
Description
Default
&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
X
&D3 Reset on ON-to-OFF DTR transition
&F Recall default setting
&G0 Disable guard tone X
&G1 Disable guard tone
&G2 Enable 1800Hz guard tone
&K0 Disable flow control
&K3 Enable RTS/CTS flow cont r ol X
&K4 Enable XON/XOFF flow control
&K5 Enable transparent XON/XOFF flow
control
&K6 Enable both RTS/CTS and XON/XOFF
flow control X Fax
&P0 Set 10pps pulse dial with 39% make/break
ratio X
&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 opera t ion
&Q5 Select to try a reliable (error-corrected)
link X
&Q6 Select normal (speed-buffering) mode
&S0 DSR always active
&S1 DSR is on during carrier is det ected X
&V Display current configurat ion
\N0 Select normal mode connection