command	Function of command
&C0	Carrier detect (CD) always on
&C1	Turn on CD when remote carrier is present
&D0	DTR signal is ignored
&D1	Modem returns to command mode after DTR toggle
&D2	Modem hangs up and returns to command mode after DTR toggle
&D3	Modem resets after DTR toggle
&F0	Load factory default configuration 0
&F1	Load factory default configuration 1
&G0	Guard tone disabled
&G1	Guard tone enabled
&G2	1800Hz guard tone enabled
&M0	Asynchronous operation
&P0	US pulse dial off-hook-to-on-hook ratio (39% - 61% make/break ratio @ 10 pps)
&P1	33% - 67% make/break ratio @ 10 pps
&P2	39% - 61% make/break ratio @ 20 pps
&P3	33% - 67% make/break ratio @ 20 pps
&S0	DSR always on
&S1	DSR is off in command mode, on in online mode
&T0	Terminate test in progress
&T1	Run local Analogue loop-back
&T3	Run local Digital loop-back
&T4	Grant remote Digital loop-back test request by remote modem
&T5	Deny remote Digital loop-back test request
&T6	Run remote Digital loop-back test
&T7	Run remote Digital loop-back test with self test
&T8	Run local Analogue loop-back test with self test
&V	View active and stored profiles
&W0	Store active profile as profile 0
&W1	Store active profile as profile 1
&Y0	Select profile 0 on power on or reset
&Y1	Select profile 1 on power on or reset
&Zn=x	Store phone number x into non-volatile RAM, n=0-3
%E0	Line quality monitor and auto-retrain disabled
%E1	Line quality monitor and auto-retrain enabled
%E2	Line quality monitor and auto fall-back/fall-forward enabled
%L	Display line signal level
%Q	Display line signal quality

+MS=a,b,c,d	Select modulation, where: a=0,1,2,3,9,10,11,64,69,74;
b=0-1;	
c=300-28800; and	
d=300-28800.	
A,b,c,d, default=11,1,300,28800.	
Parameter a specifies the modulation protocol desired; where: 0=V.21, 1=V.22, 2=V.22bis, 
3=V.23, 9=V.32, 10=V.32BIS, 11=V.34, 64=Bell 103, 69=Bell 212, and 74=V.FC.	
Parameter b specifies automode operations, where: 0=automode disabled, 1=automode enabled 
with V.8, or V.32 Annex A.	
Parameter c specifies the minimum connection data rate (300-28800).	
Parameter d specifies the maximum connection data rate (300-28800).