PC Mobile Help
A division of PC Mobile, Inc.
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PC Mobile HelpA division of PC Mobile, Inc. |
NOTE: All command strings are to be preceded by "AT"
Hayes compatible AT commands| 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. |
| Dn | Dial modifier. |
| E0 | Turn off command echo. |
| E1 | Turn on command echo. |
| 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 OK. |
| 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. |
| 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 as default. |
| Sn? | Return the value of S-Register n. |
| =v | Set default S-Register to value v. |
| ? | Return the value of default S-Register. |
| 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: |
| &D2 | Interpret DTR ON-to-OFF transition per &Qn: |
| &D3 | Interpret DTR ON-to-OFF transition per &Qn:. |
| &F0 | Restore factory configuration 0. |
| &F1 | Restore factory configuration 1. |
| &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. |
| &M0 | Select asynchronous non-EC mode (same as &Q0) |
| &Q0 | Select direct asynchronous mode. |
| &Q4 | Select Hayes AutoSync mode. |
| &Q5 | Modem negotiates an error corrected link. |
| &Q6 | Select asynchronous operation in normal mode. |
| &V | 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. |
| &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. |
| \N0 | Select normal speed buffered mode. |
| \N1 | Select direct mode. |
| \N2 | Select reliable link mode. |
| \N3 | Select auto reliable mode. |
| \N4 | Force LAPM mode. |
| \Bn | Send break of n x 100 ms. |
| \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. |
| +H0 | Disable RPI |
| +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. |
| +MS= | Select Modulation This extended-format command selects the modulation and, optionally, enables or disables automode, specifies the lowest and highest connection rates, selects m-Law or A-Law codec type, and enables or disables robbed bit signaling generation (server modem) or detection (client modem) using one to five subparameters. The command format is: +MS=[mod],[automode],[min_rate],[max_rate],[x_law],[rb_signaling]{CR} Notes: For 14400 bps and lower speeds, the Nn command and S37 register can alternatively be used, in which case the +MS subparameters will modified to reflect the Nn and S37=x settings. Use of the Nn and S37=x commands is not recommended but is provided for compatibility with existing communication software. (S37 is not updated by the +MS command.) Subparameters not entered (enter a comma only or {CR} to skip the last subparameter) remain at their current values. Reporting Supported Options: The modem can send a string of information to the DTE consisting of supported options using the following command: +MS=? The response is: +MS: (list of supported {mod} values), (list of supported {automode} values), (list of supported {min_rate} values), (list of supported {max_rate} values), (list of supported {x_law} values), (list of supported {rb_signaling} values) For example: +MS: (0,1,2,3,9,10,11,56,64,69),(0,1),(300-33600),(300- 56000),(0,1),(0,1) |
Distinctive Ring Parameters
| -SDR=0 | Any ring reported as "RING" |
| -SDR=1 | Single ring reported as "RING1 |
| -SDR=2 | Double ring reported as "RING2" |
| -SDR=3 | Single & double ring reported as "RING1" & RING2" |
| -SDR=4 | Triple ring reported as "RING3" |
| -SDR=5 | Single & triple ring reported as "RING1" & "RING3" |
| -SDR=6 | Double & triple ring reported and "RING2" & "RING3" |
| -SDR=7 | Any ring reported as "RING1" or "RING2" or "RING3". Use this command to determine the ring types on your phone system. |
| -SSE=0 | Disable DSVD. color:black"> |
| -SSE=1 | Enable DSVD. |
Error Correction 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. |
| \Bncolor:black"> | Send break of n x 100 ms. |
MNP Commands
| -K0 | Disable MNP 10 extended services. |
| -K1 | Enable MNP 10 extended services. |
|
- |
Enable MNP 10 extended services detection only. |
| -SEC=0 | Disable MNP10-EC. |
| -SEC=1,[] | Enable MNP10-EC and set transmit level 0 to 30 (0dBm to -30dBm). |
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 Commands
| +FCLASS=n | Service class. |
| +FAE=n | Data/fax auto answer |
Fax Class 2 Commands
| +FCLASS=n | Service class. |
| +FAA=n | Adaptive answer. |
| +FCLASS= | Service class. |
| +FCR= | Capability to receive. |
| +FDCC= | DCE capabilities parameters. |
| +FDIS= | Current sessions parameters. |
| +FPTS= | Page transfer status. |
| +FREV? | Identify revision. |
Voice/Audio Commands
| #MDL? | Identify model. |
| #MFR? | Identify manufacturer. |
| #REV? | Identify revision level. |
Common Configurations
Force V.42 bis data compression with LAP-M error correction. AT\N4%C2-K0
Force V.42 bis data compression with MNP error correction. AT\N5%C2
Force MNP 5 data compression with MNP error correction. AT\N5%C1
Note: With the setup strings in examples 1-3, if the remote is unable to negotiate the desire rate mode, the modem will disconnect and respond with NO CARRIER.
Auto negotiate data compression and error correction. AT&F (factory defaults) or AT\N3%C3 In this mode, the modem prefers LAP-M over MNP 10, MNP 10 over MNP 4, and V.42 bis over MNP 5. If error correction is not negotiated, the modem will connect in normal mode.