7
X4 All responses and dial tone and
busy signal detection
Z_ Z0 Reset and retrieve active profile 0
3.4 Extended AT Commands
&C_ &C0 Force Carrier Detect Signal High (ON)
&C1 Turn on CD when remote carrier is
present
&D_ &D0 Modem ignores the DTR signal
&D1 Modem returns to Command Mode after
DTR toggle
&D2 Modem hangs up, returns to the
Command Mode after DTR toggle
&F_ &F Recall factory default configuration
&G_ &G0 Guard tone disabled
&G1 Guard tone disabled
&G2 1800 Hz guard tone
&P_ &P1 Select 33 ratio M/B at 10pps
&P3 Same as &P1 setting but at 20 pulses per
second
&V &V0 Displays Active and Stored Profiles
&W_ &W0 Stores the active profile as Profile 0
%E_ %E0 Disable auto-retrain
%E1 Enable auto-retrain
+MS? Displays the current Select Modulation
settings
+MS=? Displays a list of supported Select
Modulation options
+MS=a,b,c,d,e,f Select modulation. a,b,c,d,e,f
default=V.90,1,75,33600,
75,56000.Parameter¡§a¡¨specifies the
modulation protocol desired where:
B103=Bell103,B212=Bell212,
V21=V.21,V22=V.22,V22B=V.22bis,
V23C=V.23,V32=V.32,V32B=V.32bis,
V34=V.34,K56FLEX=K56FLEX,V.90=V.90.
Parameter¡§b¡¨specifies automode
operations where=automode disabled,
1=automomod enabled.Parameter
¡§c¡¨specifies the minimum connected
speed of the transmit direction.
Parameter¡§d¡¨specifies the maximum
connected speed of the transmit