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Rockwell basic AT Commands

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Command Functions
ECC Commands
MNP 10 Commands
W-Class Commands
Caller ID Commands
FAX Class 1
Voice / Audio Commands
Synchronous Access Mode Commands


Command Functions


A/ Re-execute command.
A Go off-hook and attempt to answer a call.
B0 Select V.22 connection at 1200 bps.
B1 Select Bell 212A connection at 1200 bps.
C1 Return OK message.
Dn Dial modifier. n - telephone number.
E0 Turn off command echo.
E1 Turn on command echo.
F0 Select auto-detect mode (equivalent to N1). (RC144)
F1 Select V.21 or Bell 103. (RC144)
F2 Reserved. (RC144)
F3 Select V.23 line modulation. (RC144)
F4 Select V.22 or Bell 212A 1200 bps line speed. (RC144)
F5 Select V.22 bis line modulation. (RC144)
F6 Select V.32 bis or V.32 4800 line modulation. (RC144)
F7 Select V.32 bis 7200 line modulation. (RC144)
F8 Select V.32 bis or V.32 9600 line modulation. (RC144)
F9 Select V.32 bis 12000 line modulation. (RC144)
F10 Select V.32 bis 14400 line modulation. (RC144)
H0 Initiate a hang-up sequence.
H1 If on-hook, go off-hook and enter command mode.
I0 Report product code.
I1 Report pre-computed checksum.
I2 Report checksum and report result of comparison to pressured checksum..
I3 Report firmware revision, model, and interface type.
I4 Report response programmed by an OEM.
I5 Report the country code parameter.
I6 Report modem data pump model and code revision.
I7 Reports the DAA code (W-class models only).
L0 Set low speaker volume.
L1 Set low speaker volume (default).
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 Enter on-line data mode without a retrain.
O1 Enter on-line data mode with a retrain before returning to on-line data mode.
P Force pulse dialing.
Q0 Allow result codes to DTE.
Q1 Inhibit result codes to DTE.
Sn Establishes S-Register n as the last register accessed.
Sn=v Sets S-Register n to the value v.
Sn? Rport the value of S-Register n.
T Force DTMF dialing.
V0 Report short form (terse) result codes.
V1 Report long form (verbose) result codes.
W0 Report DTE speed in EC mode.
W1 Report line speed, EC protocol and DTE speed.
W2 Report DCE speed in EC mode.
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 connection rate, i.e., OK, CONNECT, RING, NO CARRIER, NO ANSWER, CONNECT XXXX, BUSY, and ERROR.
X4 Report all call progress result codes and connection 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 Restore stored profile 1 after warm reset.
&C0 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 The modem performs 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.
&G2 Enable 1800 Hz guard tone.
&J0 Set S-Register response only for compatibility.
&J1 Set S-Register response only for compatibility.
&K0 Disable DTE/DCE flow control.
&K3 Enable RTS/CTS DTE/DCE flow control.
&K4 Enable XON/XOFF DTE/DCE flow control.
&K5 Enable transparent XON/XOFF flow control.
&K6 Enable both RTS/CTS and XON/XOFF flow control.
&L0 Select dial up line operation.
&M0 Select direct asynchronous mode.
&M1 Select sync connect with async off-line command mode.
&M2 Select sync connect with async off-line command mode and enable DTR dialing of directory zero.
&M3 Select sync connect with async off-line command mode and enable DTR to act as Talk/Data switch.
&P0 Set 10 pps pulse dial with 39% / 61% make/break.
&P1 Set 10 pps pulse dial with 33% / 67% make/break.
&P2 Set 20 pps pulse dial with 39% / 61% make/break.
&P3 Set 20 pps pulse dial with 33% / 67% make/break.
&Q0 Select direct asynchronous mode.
&Q1 Select sync connect with async off-line command mode.
&Q2 Select sync connect with async off-line command mode and enable DTR dialing of directory zero.
&Q3 Select sync connect with async off-line command mode and enable DTR to act as Talk/Data switch.
&Q4 Select Hayes AutoSync mode.
&Q5 Modem negotiates an error corrected link.
&Q6 Select asynchronous operation in normal mode.
&R0 CTS tracks RTS (async) or acts per V.25 (sync).
&R1 CTS is always active.
&S0 DSR is always active.
&S1 DSR acts per V.25.
&T0 Terminate any test in progress.
&T1 Initiate local analog loopback.
&T2 Returns ERROR result code.
&T3 Initiate local digital loopback.
&T4 Allow remote digital loopback.
&T5 Disallow remote digital loopback request.
&T6 Request an RDL without self-test.
&T7 Request an RDL with self-test.
&T8 Initiate local analog loop with self-test.
&V0 Display current configurations.
&V1 Display connection statistics
&W0 Store the active profile in NVRAM profile 0.
&W1 Store the active profile in NVRAM profile 1.
&X0 Select internal timing for the transmit clock.
&X1 Select external timing for the transmit clock.
&X2 Select slave receive timing for the transmit clock.
&Y0 Recall stored profile 0 upon power up.
&Y1 Recall stored profile 1 upon power up.
&Zn=x Store dial string x (to 34) to location n (0 to 3).
%E0 Disable line quality monitor and auto retrain.
%E1 Enable line quality monitor and auto retrain.
%E2 Enable line quality monitor and fallback/fall forward.
%L Return received line signal level.
%Q Report the line signal quality.
%7 Plug and Play serial number.
%8 Plug and Play vendor ID and product number.
\Kn Controls break handling during three states:

1. When modem receives a break from the DTE:
\K0, 1, 2 Enter on-line command mode, no break sent to the remote modem.
\K1 Clear buffers and send break to remote modem.
\K3 Send break to remote modem immediately.
\K5 Send break to remote modem in sequence with transmitted data.

2. When modem receives \B in on-line command state:
\K0, 1 Clear buffers and send break to remote modem.
\K2, 3 Send break to remote modem immediately.
\K4, 5 Send break to remote modem in sequence with transmitted data.

3.When modem receives break from the remote modem:
\K0, 1 Clear data buffers and send break to DTE.
\K2, 3 Send a break immediately to DTE.
\K4, 5 Send a break with received data to the DTE.
\N0 Select normal speed buffered mode.
\N1 Select direct mode.
\N2 Select reliable link mode.
\N3 Select auto reliable mode.
\N4 Force LAPM mode.
\N5 Force MNP mode.
\V0 Connect messages are controlled by the command settings X, W, and S95.
\V1 Connect messages are displayed in the single line format.
+MS Select modulation.
+H0 Disable RPI/Video Ready Mode.
+H1 Enable RPI and set DTE speed to 19200 bps.
+H2 Enable RPI and set DTE speed to 38400 bps.
+H3 Enable RPI and set DTE speed to 57600 bps.
+H11 Enable RPI+ mode.
+H16 Enable Video Ready Mode.
**0 Download to flash memory at last sensed speed.
**1 Download to flash memory at 38.4 kbps.
**2 Download to flash memory at 57.6 kbps.
-SDR=0 Disable Distinctive Ring.
-SDR=1 Enable Distinctive Ring Type 1.
-SDR=2 Enable Distinctive Ring Type 2.
-SDR=3 Enable Distinctive Ring Type 1 and 2.
-SDR=4 Enable Distinctive Ring Type 3.
-SDR=5 Enable Distinctive Ring Type 1 and 3.
-SDR=6 Enable Distinctive Ring Type 2 and 3.
-SDR=7 Enable Distinctive Ring Type 1, 2, and 3.

ECC Commands

%C0 Disable data compression.
%C1 Enable MNP 5 data compression.
%C2 Enable V.42 bis data compression.
%C3 Enable both V.42 bis and MNP 5 compression.
\A0 Set maximum block size in MNP to 64.
\A1 Set maximum block size in MNP to 128.
\A2 Set maximum block size in MNP to 192.
\A3 Set maximum block size in MNP to 256.
\Bn Send break of n x 100 ms.

MNP 10 Commands

-K0 Disable MNP 10 extended services.
-K1 Enable MNP 10 extended services.
-K2 Enable MNP 10 extended services detection only.

W-Class Commands

*B Display list of permanently blacklisted numbers.
*D Display list of delayed numbers.
*NCn Change country in NVRAM.

Caller ID Commands

#CID=0 Disable Caller ID.
#CID=1 Enable Caller ID with formatted presentation.
#CID=2 Enable Caller ID with unformatted presentation.

FAX Class 1

+FCLASS=n Service class.
+FAE=n Data/fax auto answer.
+FRH=n Receive data with HDLC framing.
+FRM=n Receive data.
+FRS=n Receive silence.
+FTH=n Transmit data with HDLC framing.
+FTM=n Transmit data.
+FTS=n Stop transmission and wait.

Voice / Audio Commands

#BDR Select baud rate (turn off autobaud).
#CLS Select data, fax, or voice.
#MDL? Identify model.
#MFR? Identify manufacturer.
#REV? Identify revision level.
#SPK= Speakerphone setting.
#TL Audio output transmit level.
#VBQ? Query buffer size.
#VBS Bits per sample.
#VBT Beep tone timer.
#VCI? Identify compression method.
#VGT Set playback volume in the command state.
#VLS Voice line select.
#VRA Ringback goes away timer (originate).
#VRN Ringback never came timer (originate).
#VRX Voice receive mode.
#VSD Enable silence deletion (no function, command response only).
#VSK Buffer skid setting.
#VSP Silence detection period (voice receive).
#VSR Sampling rate selection.
#VSS Silence detection tuner (voice receive).
#VTD DTMF / tone reporting.
#VTM Enable timing mark placement.
#VTS Generate tone signals.
#VTX Voice transmit mode.

Synchronous Access Mode Commands

+ES Enables and disables Synchronous Access Mode in the client or central site modem.
+ESA Configures the operation of the Synchronous Access Submode.
+ITF Selects Transmit Flow Control Thresholds.