Multi-Tech Systems BA-Series Loading Factory Defaults &F, Modem Reset Z, Unix Uucp Spoofing $SP

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MultiModemBA User Guide

Loading Factory Defaults &F

The &F command provides a choice between customized configuration settings in RAM and the factory default configuration settings in ROM. The &F8 and &F9 commands define the function of the &F command.

The modem is shipped from the factory with a pre-configured set of command and S-Register default settings. This set of factory defaults can be recalled by issuing the &F command.

In addition to being able to recall the factory-installed defaults, the &F command can also recall those defaults stored under &W0.

This is done using the &F9 command. If you have stored parameters with the &W0 command and wish these settings to always be used as your defaults, you would enter &F9&W0.

To return the &F command to read factory installed defaults, enter &F8&W0. &F8 is the factory default.

Many datacomm program issue the &F command automatically- the &F9 command allows the user to select their own factory defaults. Note that the &F8/&F9 commands should be used with &W0.

Following is a summary of how the &F and Z reset commands interact with the &W command; note how the &F reset command operates differently from the Z reset command:

Previous Command

AT&F

Power-On and ATZ

AT&W1 (default)

ROM

ROM

AT&W0

ROM

NVRAM

AT&F8&W0

ROM

NVRAM

AT&F9&W0

NVRAM

NVRAM

Modem Reset Z

The Z command can be used to reset the entire Command Mode buffer and the result is the same as if you had disconnected, and then reconnected power to the modem. When an ATZ command is executed, the state of the &W command determines where the default values originate. &W0 defaults come from RAM and &W1 defaults come from ROM.

Unix UUCP Spoofing $SP

The modem can be configured in a Unix environment that employs ACK flow control as a means of monitoring data integrity. The modem can do “UUCP spoofing”, where the modem is able to generate ACKs at the DTE interface. Data is transmitted more time efficiently because the delay of waiting for data to be received, then for an ACK to be returned at the remote end, is eliminated. The $SP1 command enables UUCP spoofing and the default command $SP0 disables UUCP spoofing.

Async/Sync Mode Switching &M

This command can be used to set the on-line mode to either synchronous or asynchronous. AT&M0 will set the modem to Asynchronous mode, and all communications will be Asynchronous, in both On-line and Command modes. AT&M1 causes the modem to communicate asynchronously when in Command mode and switch to synchronous mode while on-line. The modem defaults to &M0 (asynchronous communications) on reset or power-up.

Synchronous Transmit Clock Select &X

The &X command selects the Synchronous Transmit Clock Source in conjunction with DIP-Switch #11. DIP-Switch #11 in the UP position enables External clocking. DIP-Switch #11 in the DOWN position enables Internal clocking (default position). External clocking is when the DTE provides transmit clocking to the modem on pin 24 of the RS-232C interface.

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Contents User Guide User Guide Record of RevisionsContents Index 106 Introduction and Description How To Use This Manual IntroductionModem Features Callback and Remote ConfigurationDIP-Switches 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? InstallationSafety Warnings Installation ProcedureInstallation and Connection Step ProcedureInstalling Data Communications Software MultiModemBA/BAI ConnectionsSoftware Configuration and Modem Basics Configuring Your Software Configuring Software for Your ModemPC Initialization Strings AT &F X4 S0=0 MChanging Default Parameters Configuring Software for Your ComputerConfiguring Software for the Remote System Other ParametersTerminal Emulation File Transfer ProtocolsCommand Mode AT Command Editing Functional ModesSummary of AT Commands Command ModeStore Modem Configure Data Standard AT Result Codes Result CodesMulti-Tech Result Codes Dialing Commands Dialing Action Commands Dial Command DContinuous Redial not used in BAI a or Dialing a Stored Number NDial Modifier Commands DTR Dialing $DVoice/Data Dialing $VD Pulse or Tone Dial P TReturn to Command Mode After Dial Command Execution Reverse the Mode of Operation RSet Pulse Dial Ratios &P Automatic Pauses in DialingPhone Number Memory Commands Flash On HookCalling Card Detect Tones $ Quiet Answer @Listing Numbers Stored in Memory L Configuration and Default Storage CommandsNumber Linking NN Loading Factory Defaults &F Modem Reset ZAsync/Sync Mode Switching &M Unix Uucp Spoofing $SPCommand Response Result Code Commands Echo Command Mode Characters EResult Codes Enable/Disable and No Response Answer Q Result Codes Multi-Tech or Standard AT &QGuard Tones Not Used in BAI Models &G Phone Line Conditioning CommandsResult Codes Basic and Extended and Call Progress Selection Enable/Disable Trelis Coded Modulation #T Fallback Modes When On-Line #FBell/V.21 Tone Phone Line Monitoring Speaker M7 RS-232C Interface Control Commands Enable/Disable Lowspeed Fast Connect $FCCleardown at Disconnect &CD Auto Speed Detect #AData Terminal Ready Control &D CTS Control &RData Set Ready Control &S CTS/RTS Interaction Control &RFError Correction Commands Enable/Disable Auto Reliable Fallback Character $F Auto-Reliable Buffering $ARetransmit Count $R Flow Control CommandsError Correction/300bps $E Xon/Xoff Pass-Through &E7 Hardware Flow Control &E4Xon/Xoff Flow Control &E5 Normal Mode Modem Flow Control On &E11 Send Xon/Xoff Characters #XHewlett-Packard ENQ/ACK Pacing &E9 Terminal/Computer Initiated Pacing &E13Normal/Auto-Reliable/Reliable Mode Commands Xon/Xoff Pass-Through CommandsEnq/Ack Pacing Commands Parity Selection #PModem Baud Rate $MB Speed Conversion CommandsSpeed Conversion $BA Serial Port Baud Rate $SB Immediate Action Commands Force Answer Mode a Off Hook HLine Probe Commands Exiting Command Mode, Going Back On-Line OEnable/Disable Reading of Line Probe Information Commands Format of Line Probe Graph or Table CommandsRegisters Number of Rings Until Modem Answers Rings Which Have OccurredEscape Code Character Return CharacterTime for Carrier Abort Timer Line Feed CharacterBackspace Character Wait Time for Dial ToneS10 Carrier Loss Disconnect Delay Time S13 Remote Configuration Escape CharacterCarrier Detect Response Time S11 Tone Dialing Tone Spacing and DurationS15 Callback Time Delay S16 Callback AttemptsS17 Changing Break Time S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CDS26 Failed Password Attempts S29 Local Inactivity TimerS30 Inactivity Timer S32 Time Elapse for Escape SequenceReading and Assigning S-Register Values S36 Time Between DTR Inactive and Modem Off-HookS37 Time Between DTR Active and Modem On-Hook S48 Program V.34bis Connect Speeds 2834 Series onlyExamples of Reading Values AT Command and S-Register SummaryExamples of Assigning Values Callback Security and Remote Configuration Callback Feature Description Remote Configuration DescriptionTo set parity of the password/message prompt To change your Remote Configuration feature statusTo turn your modems Callback Security feature on and off AT#DB2CR or AT#DB1CR Remote Configuration Procedures Callback Security and Remote ConfigurationCallback Operational Sequence Procedures Remote Configuration Operation Procedures StepProcedureRemote Configuration and Callback Security AT Commands Callback Security Enable/DisableChange Login Password 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 DistributorsReplacement Parts Technical SupportInternet Sites Country TelephoneAppendixes Upgrade Overview Appendix a Upgrading Your Modem’s FirmwareDownload the Upgrade File Upgrade the Modem’s Firmware Modem Does Not Respond to Commands Appendix B TroubleshootingNone of the LEDs Light When the Modem Is On Appendix B Troubleshooting Modem Dials But Cannot Make a Connection Modem Cannot Connect When Answering Modem Disconnects While On-lineFile Transfer Is Slower Than It Should Be Am Losing DataAm Getting Garbage Characters on the Monitor Command Values Description Apendix C AT Command SummaryAppendix C AT Command Summary MultiModemBA User Guide Command Values Description SN d$Fn RF n $SBn Break Atcr Callback Security/Remote Configuration Command Summary #Syyyyyyyyyy Password Command SummaryCommand Description #Ixxxxxxxxxx 25bis Commands 25bis Operation Delayed and Forbidden NumbersAppendix D V.25bis Operation 25bis Mode AT Commands 25bis DIP-Switches25bis Set-Up and Initialization Appendix D V.25bis Operation25bis AT Commands Enable/Disable V.25bis Mode $V CommandChange Serial Baud Rate CSP Command 25bis Responses Result CodesDial Phone Number Provided CRN Command Listing Delayed Phone Numbers RLD CommandListing Forbidden Phone Number RLF Command Disregard or Connect to Incoming Calls DIC or CIC CommandDTR Dialing $D Command ITU V.25bis Country Specific InformationItaly SwitzerlandAppendix E MultiModemBA Cables Austria FranceBelgium SingaporeAppendix E MultiModemBA Cables Figure E-1. RS232 Cable IBM PCAppendix F Regulatory Information FCC Part FCC Part 68 TelecomAppendix F Regulatory Information Industry CanadaCanadian Limitations Notice 104105 EMC, Safety, and R&TTE Directive ComplianceInternational Modem Restrictions Index 106Index 107PBX/CBX Disconnect Drop Time for DSR/CTS/CD53 108109
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