Reference Information 
Modem Reference Information 
200  Corporate Evaluator’s Guide 
Command Function (Ambit) 
I6  Report modem data pump model and code revision 
I7  Report the DAA code 
L0  Set low speaker volume 
L1  Set low speaker volume 
L2  Set medium speaker volume 
L3  Set high speaker volume 
M0  Turn speaker off 
M1  Turn speaker on during handshaking and turn speaker off while receiving carrier 
M2  Turn speaker on during handshaking and while receiving carrier 
M3  Turn speaker off during dialing and receiving carrier and turn speaker on during answering 
N0  Turn off automode detection 
N1  Turn on automode detection 
O0 Go on-line 
O1  Go on-line and initiate a retrain sequence 
P  Force pulse dialing 
Q0  Allow result codes to DTE 
Q1  Inhibit result codes to DTE 
Sn  Select S-Register n as default 
Sn?  Return the value of S-Register n 
Sn=v  Set default S-Register n to value v 
T  Force DTMF dialing 
V0  Report short form result codes 
V1  Report long form result codes 
W0  Report DTE speed only 
W1  Report line speed, EC protocol and DTE speed 
W2  Report DCE speed only 
X0  Report basic call progress result codes, i.e., Ok, Connect, Ring, No Carrier (also, for busy, if enabled, and 
dial tone not detected), No Answer and Error 
X1  Report basic call progress result codes and connections speeds (Ok, Connect, Ring, No Carrier (also, for 
busy, if enabled, and dial tone not detected), No Answer, Connect XXXX, and Error 
X2  Report basic call progress result codes and connections speeds, i.e., Ok, Connect, Ring, No Carrier (also, 
for busy, if enabled, and dial tone not detected), No Answer, Connect XXXX, and Error 
X3  Report basic call progress result codes and connections rate, i.e., Ok, Connect, Ring, No Carrier, No 
Answer, Connect XXXX, Busy, and Error 
X4  Report all call progress result codes and connections rate, i.e., Ok, Connect, Ring, No Carrier, No Answer, 
Connect XXXX, Busy, No Dial Tone and Error 
Y0  Disable long space disconnect before on-hook 
Y1  Enable long space disconnect before on-hook 
Z0  Restore stored profile 0 after warm reset 
Z1  Soft reset and restore stored profile 1 after warm reset 
&C0  Soft reset and force RLSD active regardless of the carrier state 
&C1  Allow RLSD to follow the carrier state 
&D0  Interpret DTR On-to-OFF transition per &Qn 
&Q0, &Q5, &Q6: The modem ignores DTR 
&Q1, &Q4: The modem hangs up 
&Q2, &Q3: The modem hangs up 
&D1  Interpret DTR On-to-OFF transition per &Qn 
&Q0, &Q1, &Q4, &Q5, &Q6: Asynchronous escape 
&Q2, &Q3: The modem hangs up