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Appendix D - AT Command Summary
Command Values Description
&En n = 0 thru 15 &E0 means no error correction.
* &E1 means V.42 Auto-reliable Mode.
&E2 means V.42 Reliable Mode.
&E3 means no modem-initiated flow control.
* &E4 means CTS modem-initiated flow control.
&E5 means Xon/Xoff modem-initiated flow control.
* &E6 means Xon/Xoff not passed through.
&E7 means Xon/Xoff passed through.
* &E8 means Enq/Ack pacing off.
&E9 means Enq/Ack pacing on.
* &E10 means Normal Mode flow control off.
&E11 means Normal Mode flow control on.
&E12 means Pacing off.
* &E13 means Pacing on.
&E14 means data compression disabled.
* &E15 means data compression enabled.
$EBn n = 0 or 1 * $EB0 enables 10 bit mode.
$EB1 enables 11 bit mode.
%En n=0 thru 5 % E0 = Modem Won’t Escape.
* % E1 = +++ Method (default setting).
% E2 = Break Method.
% E3 = Either +++ or Break Method.
% E4 = No "OK" Response to +++
% E5 = "OK" Response to +++
#Fn n = 0 thru 2 #F0 means no fallback when on-line.
#F1 means fallbackwhen on-line (increments of
2400 bps).
* #F2 means fallback to 4800 bps/fall forward if line
improves (increments of 2400 bps).
&Fn n = 0, 8 or 9 &F loads factory default values from ROM.
* &F8 reads factory default values and switch settings
when &F is issued.
&F9 reads parameters stored in non-volatile
memory when &F is issued.
$Fn n = 0 or 1 $F0 means do not fall back to normal connect if CR
received.
* $F1 means fall back to normal connect if CR
received.
&Gn n = 0, 1 or 2 * &G0 turns off CCITT guard tones.
&G1 turns on CCITT 550 Hz guard tone.
&G2 turns on CCITT 1800 Hz guard tone.
Hn n = 0 or 1 H0 means Hang Up (go on hook).
H1 means Go Off Hook.
* Factory Default Setting