Multi-Tech Systems BA-Series manual Immediate Action Commands

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MultiModemBA User Guide

4.4.12Immediate Action Commands

Help Screens $H

The Help command is designed to give you short explanations on how to use each modem command. The Help command can be quite useful if your manual is not handy and you are in the middle of a communications session. Although the explanations are quite abbreviated compared to those in this manual, they should prove to be helpful reminders when needed.

At the time of this writing, we have three screens of Help information (Screen #1, #2 and #3), and more screens may be added in the future. The Help commands are structured so that you can call up one of three Help screens, as follows:

AT$H1 = Help Screen #1

AT$H2 = Help Screen #2

AT$H3 = Help Screen #3

Inquiry for Product Code I

Some systems or software packages automatically check the “identification” of the modem with which they are communicating, by using the I command. This “read” command lets the software to determine the type of modem with which it is communicating.

When ATI or ATI0 is entered, the modem responds with 247. When ATI1 is entered, the modem responds with a three-digit code indicating the firmware version number. When ATI2 is entered, the modem responds with MT2834BA, MT1432BA or MT932BA depending on model.

Windows 95 Autodetect Inquiry I9

This read command permits a Windows 95 operating system to query the MT2834BA's characteristics. When ATI9<CR> is entered the symbols BA 28800 FAX CT are displayed; which indicates to the Windows 95 system that your particular modem is a MT2834BA, 28,800 bps, fax Class 2 capable modem. With autodetect support in your MT2834BA, your PC can automatically allocate resources and configure it and other devices. The MT2834BA implements autodetect capability in the form of a single .INF (Information) file that specifies AT Command mode and Result Code "Registry Keys" that are specific to your MT2834BA.

Listing Current Operating Parameters L5 L7

The L5 and L7 commands list the current operating parameters of your modem. This information can be very useful when you are changing communications software or when you are changing modem default settings.

The command to list the modem’s current operating parameters is ATL5 for the basic parameters. Entering ATL7 lists additional parameters on the modem.

Listing S-Register Values L6

Entering ATL6 lists the current values stored in the modem’s S-Register. This information can be very useful if you wish to change S-Register values.

Listing On-Line Diagnostics L8

The L8 command displays the current on-line CONNECT status of the modem. This display can be printed and used as a modem status report or as diagnostic information (such as when calling Tech Support). To activate this command first type +++AT<CR>(on-line escape command while maintaining command mode), then type ATL8. What then displays on your monitor is your modem's current on-line condition (e.g., Link Type, Line Speed, Serial Speed, Type of Error Correction/Data Compression, Number of past Retrains, etc.).

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Contents User Guide User Guide Record of RevisionsContents Index 106 Introduction and Description How To Use This Manual IntroductionDIP-Switches Modem FeaturesCallback and Remote Configuration Warranty, Service & Technical Support1 2834 Series Features Fax FeaturesTechnical Specifications Power Modem LED Indicators MT2834 LED DisplayControls on PC Board Installation and Connection What is in Your Modem Package? InstallationInstallation and Connection Safety WarningsInstallation Procedure Step ProcedureInstalling Data Communications Software MultiModemBA/BAI ConnectionsSoftware Configuration and Modem Basics PC Initialization Strings Configuring Your SoftwareConfiguring Software for Your Modem AT &F X4 S0=0 MConfiguring Software for the Remote System Changing Default ParametersConfiguring Software for Your Computer Other ParametersTerminal Emulation File Transfer ProtocolsCommand Mode AT Command Editing Functional ModesSummary of AT Commands Command ModeStore Modem Configure Data Multi-Tech Result Codes Result CodesStandard AT Result Codes Continuous Redial not used in BAI a or Dialing Commands Dialing Action CommandsDial Command D Dialing a Stored Number NVoice/Data Dialing $VD Dial Modifier CommandsDTR Dialing $D Pulse or Tone Dial P TSet Pulse Dial Ratios &P Return to Command Mode After Dial Command ExecutionReverse the Mode of Operation R Automatic Pauses in DialingCalling Card Detect Tones $ Phone Number Memory CommandsFlash On Hook Quiet Answer @Number Linking NN Configuration and Default Storage CommandsListing Numbers Stored in Memory L Async/Sync Mode Switching &M Loading Factory Defaults &FModem Reset Z Unix Uucp Spoofing $SPResult Codes Enable/Disable and No Response Answer Q Command Response Result Code CommandsEcho Command Mode Characters E Result Codes Multi-Tech or Standard AT &QResult Codes Basic and Extended and Call Progress Selection Phone Line Conditioning CommandsGuard Tones Not Used in BAI Models &G Bell/V.21 Tone Enable/Disable Trelis Coded Modulation #TFallback Modes When On-Line #F Phone Line Monitoring Speaker MCleardown at Disconnect &CD 7 RS-232C Interface Control CommandsEnable/Disable Lowspeed Fast Connect $FC Auto Speed Detect #AData Set Ready Control &S Data Terminal Ready Control &DCTS Control &R CTS/RTS Interaction Control &RFError Correction Commands Enable/Disable Auto Reliable Fallback Character $F Auto-Reliable Buffering $AError Correction/300bps $E Flow Control CommandsRetransmit Count $R Xon/Xoff Flow Control &E5 Hardware Flow Control &E4Xon/Xoff Pass-Through &E7 Hewlett-Packard ENQ/ACK Pacing &E9 Normal Mode Modem Flow Control On &E11Send Xon/Xoff Characters #X Terminal/Computer Initiated Pacing &E13 Enq/Ack Pacing Commands Normal/Auto-Reliable/Reliable Mode Commands Xon/Xoff Pass-Through Commands Parity Selection #PSpeed Conversion $BA Speed Conversion CommandsModem Baud Rate $MB Serial Port Baud Rate $SB Immediate Action Commands Force Answer Mode a Off Hook HEnable/Disable Reading of Line Probe Information Commands Line Probe CommandsExiting Command Mode, Going Back On-Line O Format of Line Probe Graph or Table CommandsRegisters Escape Code Character Number of Rings Until Modem AnswersRings Which Have Occurred Return CharacterBackspace Character Time for Carrier Abort TimerLine Feed Character Wait Time for Dial ToneCarrier Detect Response Time S10 Carrier Loss Disconnect Delay TimeS13 Remote Configuration Escape Character S11 Tone Dialing Tone Spacing and DurationS17 Changing Break Time S15 Callback Time DelayS16 Callback Attempts S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CDS30 Inactivity Timer S26 Failed Password AttemptsS29 Local Inactivity Timer S32 Time Elapse for Escape SequenceS37 Time Between DTR Active and Modem On-Hook Reading and Assigning S-Register ValuesS36 Time Between DTR Inactive and Modem Off-Hook S48 Program V.34bis Connect Speeds 2834 Series onlyExamples of Assigning Values AT Command and S-Register SummaryExamples of Reading Values Callback Security and Remote Configuration Callback Feature Description Remote Configuration DescriptionTo turn your modems Callback Security feature on and off To change your Remote Configuration feature statusTo set parity of the password/message prompt AT#DB2CR or AT#DB1CR Callback Operational Sequence Procedures Remote Configuration ProceduresCallback Security and Remote Configuration Remote Configuration Operation Procedures StepProcedureChange Login Password Remote Configuration and Callback Security AT CommandsCallback Security Enable/Disable AT#I=yyyyyyyyyyCRRemote Configuration/Callback Security S-Registers Local Inactivity Timer S29 DIP-Switch Settings DIP-Switch Option Settings PC BoardSwitch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UP DIP-Switch SettingsMultiModemBA User Guide = Down Down Speaker Volume Control Switch #16 Reserved for Future UseRecording Option Configurations Switch Function Position EffectDIP Switches #13-14 DIP Switches #15-16Warranty, Service and Tech Support Multi-Tech Systems, Inc. Warranty & Repairs Policies Warranty, Service, and Technical SupportOnline Warranty Registration Repair Procedures for International DistributorsInternet Sites Replacement PartsTechnical Support Country TelephoneAppendixes Upgrade Overview Appendix a Upgrading Your Modem’s FirmwareDownload the Upgrade File Upgrade the Modem’s Firmware None of the LEDs Light When the Modem Is On Appendix B TroubleshootingModem Does Not Respond to Commands Appendix B Troubleshooting Modem Dials But Cannot Make a Connection File Transfer Is Slower Than It Should Be Modem Cannot Connect When AnsweringModem Disconnects While On-line Am Losing DataAm Getting Garbage Characters on the Monitor Appendix C AT Command Summary Apendix C AT Command SummaryCommand Values Description MultiModemBA User Guide Command Values Description SN d$Fn RF n $SBn Break Atcr Callback Security/Remote Configuration Command Summary Command Description #Ixxxxxxxxxx Password Command Summary#Syyyyyyyyyy 25bis Commands Appendix D V.25bis Operation Delayed and Forbidden Numbers25bis Operation 25bis Set-Up and Initialization 25bis Mode AT Commands25bis DIP-Switches Appendix D V.25bis OperationChange Serial Baud Rate CSP Command 25bis AT CommandsEnable/Disable V.25bis Mode $V Command 25bis Responses Result CodesListing Forbidden Phone Number RLF Command Dial Phone Number Provided CRN CommandListing Delayed Phone Numbers RLD Command Disregard or Connect to Incoming Calls DIC or CIC CommandItaly DTR Dialing $D CommandITU V.25bis Country Specific Information SwitzerlandBelgium Appendix E MultiModemBA Cables AustriaFrance SingaporeAppendix E MultiModemBA Cables Figure E-1. RS232 Cable IBM PCAppendix F Regulatory Information Appendix F Regulatory Information FCC PartFCC Part 68 Telecom Industry CanadaCanadian Limitations Notice 104International Modem Restrictions EMC, Safety, and R&TTE Directive Compliance105 Index 106Index 107PBX/CBX Disconnect Drop Time for DSR/CTS/CD53 108109
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