Multi-Tech Systems MT2834ZPX owner manual AT Commands and S-Register Summary

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MT2834ZPX Owner's Manual

AT Commands and S-Register Summary

The vast majority of installations are similar, with the MT2834ZPX being used to dial up a remote installation where the call is automatically answered. Your MT2834ZPX has a default configuration to dial another 33,600 bps modem that support error correction, data compression and flow control. If the answering modem is not compatible, the MT2834ZPX can match protocols, provided the protocols are industry standard (i.e., ITU-T, AT&T or Bell) and not proprietary.

AT&W0 (or AT&W) command, used in conjunction with specific other AT commands and S-Registers, can reconfigure the MT2834ZPX to conform to a specific application. The MT2834ZPX can store its configuration parameters and S-Register values in its nonvolatile memory (RAM). This command also sets the modem upon power up, or when it is reset with an ATZ command, the modem reads all its configuration and S-Register parameters from RAM, and not from the factory settings in ROM (note you may recall factory installed defaults by entering AT&F8&W0).

The &W command changes the configuration parameters stored in RAM that you specifically intend to alter. All other default parameters remain unchanged.

The AT&W1 command sets the modem so that it does not store its parameters in RAM, and on power up or when an ATZ command is issued, parameters are read from the factory default settings in ROM.

You may first view the modem's current operating parameters by using the ATL5, ATL6 and ATL7 commands to display the current modem configuration; then alter the modem's configuration settings if your application requires you to do so.

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Contents Page Record of Revisions Revision Description Contents Index Introduction and Description Modem Features Fax Features Product DescriptionHow to Use This Manual Installation and ConnectionSoftware Configuration AT Commands and S-RegistersTesting Your Modem Service, Warranty & Technical Support/ BBSAppendices Installation and Configuration Safety WarningsConfiguration/Installation Procedure Configuration and Installation Procedure StepProcedureInstallation and Configuration Is Your MT2834ZPX Ready for Use? Operating Your MT2834ZPX Simple Operations Software Configuration Introduction Configuring Software for Your ModemPC Initialization Strings AT &F X4 S0= 2 MChanging Default Parameters Configuring Software for Your ComputerConfiguring Software for the Remote System Terminal EmulationWhen to Disable Data Compression File Transfer ProtocolsAT &F S0=0 X4 &E14 M Disabling Error Correction 16550 Uart and WindowsAT &F S0=0 X4 &E0 M COMnFIFO=1 COM2FIFO=1Page Modem AT Commands Command a Default $BA0 Description Command Values Default $EB0 Description =0 thru $Fn Command Values Default Command Values Default Description Default &P1 Description RFn Command T = 0, 1, 2, or Values Default Description Command @ Remote Configuration Remote Configuration ProceduresRemote Configuration Operation Procedures StepProcedure Password Commands Contd. Remote Configuration Operation ProceduresRegisters Escape Code CharacterReturn Character Pause Time for Comma S13 Remote Configuration Escape Character S29 Local Inactivity Timer S36 Time Between DTR Inactive and Modem Off-Hook Result Codes Q0 Multi-Tech Result CodesQ1 Standard AT Result Codes AT Commands and S-Register Summary Troubleshooting Modem Does Not Respond to CommandsPage Modem Dials But Cannot Make a Connection Page Modem Disconnects While Online Modem Cannot Connect When Answering File Transfer Is Slower Than It Should BeLosing Data Getting Garbage Characters on the Monitor Fax and Communications Software Won’t Run at the Same TimeTesting Your Modem Local Analog Loopback Test/V.54 Loop Local Analog Loopback TestDigital Loopback Test/V.54 Loop 2 Local/Manual Digital Loopback Test/V.54 Loop 2 Remote/ Automatic Digital Loopback Test local/manualDigital Loopback Test remote/automatic Service, Warranty and Tech Support Introduction Limited WarrantyOn-line Warranty Registration Tech SupportRecording Modem Information Service About the Multi-Tech BBS To log on to the Multi-Tech BBSTo Download a file If you know the file nameIf you don’t know the file name About the Multi-Tech Fax-Back Service About CompuServe/InternetAppendix a Technical Specifications Intelligent Features Command BufferModulation Fax ModulationsCarrier FrequenciesData Carrier Frequencies BpsBell StandardCarrier Frequencies Connectors DiagnosticsTemperature Power Consumption DimensionsAppendix B Tone Dial Frequencies 697 770 852 941 1209 Digits 1336 1477 1633Appendix C FCC and Canadian Regulations RJ11C or RJ11W single line Appendix C FCC and Canadian Regulations Canadian Limitations Notice Index 15, 19 In-band Escape Sequence MultiExpress for Windows PBX/CBX Disconnect Drop Time for DSR/CTS/CD Rings Which Have Occurred Registers Serial port 17, 20, 21 17, 19