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Modem Reference Information
Reference Guide 135
Command Function (Ambit)
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
&D2 Interpret DTR On-to-OFF transition per &Qn
&Q0 through &Q6: The modem hangs up
&D3 Interpret DTR On-to-OFF transition per &Qn
&Q0, &Q1, &Q4, &Q5, &Q6: Soft reset
&Q2, &Q3: The modem hangs up
&F0 Restore factory configuration 0
&F1 Restore factory configuration 1
&G0 Disable guard tone
&G1 Disable guard tone