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| AT Commands Summary |
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| Command | Function |
|---|---|
| A | Go off-hook and attempt to answer a call. |
| A/ | Re-execute command. |
| \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. |
| B0 | Select V.22 connection at 1200 bps. |
| B1 | Select Bell 212A connection at 1200 bps. |
| \Bn | Send break of n x 100 ms. |
| C1 | Return OK message. |
| &C0 | Force RLSD active regardless of the carrier state. |
| &C1 | Allow RLSD to follow the carrier state. |
| %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. |
| #CID | Enable caller ID detection and select reporting format. |
| Dn | Dial modifier. |
| &D0 | Interpret DTR ON-to-OFF transition per &Qn: &Q0, &Q5, &Q6 The modem ignores DTR. |
| &D1 | Interpret DTR ON-to-OFF transition per &Qn: &Q0, &Q5, &Q6 Asynchronous escape. |
| &D2 | Interpret DTR ON-to-OFF transition per &Qn: &Q0, &Q5, Q6 The modem hangs up. |
| &D3 | Interpret DTR ON-to-OFF transition per &Qn:. &Q0, &Q5, &Q6 The modem performs soft reset. |
| E0 | Turn off command echo. |
| E1 | Turn on command echo. |
| %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. |
| F0 | Select auto-detect mode (equivalent to N1). |
| F1 | Select V.21 or Bell 103. |
| F2 | Reserved. |
| F3 | Select V.23 line modulation. |
| F4 | Select V.22 or Bell 212A 1200 bps line speed. |
| F5 | Select V.22 bis line modulation. |
| F6 | Select V.32 bis or V.32 4800 line modulation. |
| F7 | Select V.32 bis 7200 line modulation. |
| F8 | Select V.32 bis or V.32 9600 line modulation. |
| F9 | Select V.32 bis 12000 line modulation. |
| F10 | Select V.32 bis 14400 line modulation. |
| F13 | Select V.34 bis 14400 line modulation. |
| F14 | Select V.34 bis 16800 line modulation. |
| F15 | Select V.34 bis 19200 line modulation. |
| F16 | Select V.34 bis 21600 line modulation. |
| F17 | Select V.34 bis 24000 line modulation. |
| F18 | Select V.34 bis 26400 line modulation. |
| F19 | Select V.34 bis 28800 line modulation. |
| F20 | Select V.34 bis 31200 line modulation. |
| F21 | Select V.34 bis 33600 line modulation. |
| &F0 | Restore factory configuration 0. |
| &F1 | Restore factory configuration 1. |
| H0 | Initiate a hang-up sequence. |
| H1 | If on-hook, go off-hook and enter command mode. |
| +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 |
| I0 | Report product code. |
| I1 | Report pre-computed checksum. |
| I2 | Report OK. |
| I3 | Report firmware revision, model, and interface type. |
| I4 | Report pace modem identifier string. |
| I5 | Report the country code parameter. |
| I6 | Report modem data pump model and code revision. |
| &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. |
| \Kn | Controls break handling during three states: When modem receives a break from the DTE: |
| \K0,2,4 | 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. 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. 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. |
| -K0 | Disable MNP 10 extended services. |
| -K1 | Enable MNP 10 extended services. |
| -K2 | Enable MNP 10 extended services detection only. |
| L0 | Set low speaker volume. |
| L1 | Set low speaker volume. |
| L2 | Set medium speaker volume. |
| L3 | Set high speaker volume. |
| %L | Return received line signal level. |
| 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. |
| &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. * |
| +MS | Select modulation. |
| N0 | Turn off automode detection. |
| N1 | Turn on automode detection. |
| \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. |
| O0 | Go on-line. |
| O1 | Go on-line and initiate a retrain sequence. |
| P | Force pulse dialing. |
| &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 | Allow result codes to DTE. |
| Q1 | Inhibit result codes to DTE. |
| %Q | Report the line signal quality. |
| &Q0 | Select direct asynchronous 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. |
| Sn | Select S-Register as default. |
| Sn? | Return the value of S-Register n. |
| &S0 | DSR is always active. |
| &S1 | DSR acts per V.25. |
| -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. |
| -SEC=0 | Disable MNP10-EC. |
| -SEC=1,[tx level] | Enable MNP10-EC and set transmit level |
| T | Force DTMF dialing. |
| &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 | Report short form (terse) result codes. |
| V1 | Report long form (verbose) result codes. |
| &V | Display current configurations. |
| &V1 | Display connection statistics |
| \V0 | Connect messages are controlled by the command settings X, W, and S95. |
| \V1 | Connect messages are displayed in the single line format. |
| W0 | Report DTE speed in EC mode. |
| W1 | Report line speed, EC protocol and DTE speed. |
| W2 | Report DCE speed in EC mode. |
| &W0 | Store the active profile in NVRAM profile 0. |
| &W1 | Store the active profile in NVRAM profile 1. |
| 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. |
| &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 | Disable long space disconnect before on-hook. |
| Y1 | Enable long space disconnect before on-hook. |
| &Y0 | Recall stored profile 0 upon power up. |
| &Y1 | Recall stored profile 1 upon power up. |
| Z0 | Restore stored profile 0 after warm reset. |
| Z1 | Restore stored profile 1 after warm reset. |
| &Zn=x | Store dial string x (to 34) to location n (0 to 3). |
| =x | Set default S-Register to value x. |
| ? | Return the value of default S-Register. |
| Command | Function |
|---|---|
| +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. |
| Command | Function |
|---|---|
| #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. (Not available on the Pace NB 56 Voice) |
| #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. |
| Command | Function |
|---|---|
| -SMS= | Select AudioSpan/DSVD Mode |
| -SSE= | Enable/Disable DSVD |
| -SQS= | Select AudioSpan Modulation |
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