Multi-Tech Systems MT2834BA Series Configuration and Default Storage Commands, Modem Reset Z

Page 38

Chapter 5 - Command Mode

5.4.4Configuration and Default Storage Commands

Store Configuration & S-Register Parameters in Non-Volatile Memory &W

The modem can store configuration parameters and S-Register values in its nonvolatile read/write Random Access Memory (RAM) memory. The &W command does this, which prevents any re- configuration from being lost on a power-down or Reset (ATZ) condition.

&W0 (or AT&W) causes the modem to store your customized AT command settings and S-Register values in its nonvolatile RAM. &W0 also sets the modem so that it reads your customized settings stored in nonvolatile RAM when powered down or reset. (The &W0 command only changes the settings stored in nonvolatile RAM that you specifically intend to alter. All other default parameters are applicable.)

&W1 causes the modem not to store your customized settings to nonvolatile RAM so that, after powering down or resetting the modem, it reads the factory default settings stored in ROM.

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.

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide

38

Image 38
Contents User Guide Patents User GuideRecord of Revisions Date Description TrademarksContents Registers Index 117Introduction and Description How To Use This Manual IntroductionModem Features 1 MT2834BA/BL Series Features Fax FeaturesTechnical Specifications Power Modem LED Indicators MT2834BA LED DisplayControls on PC Board Installation and Connection Safety Warnings What Is in Your Modem Package?Installation Installation ProcedureMultiModemBA Connections Installing PhoneTools, the Data Communications Software Is Your Modem Ready for Use?Software Configuration and Modem Basics Software Configuration Configuring Your SoftwareConfiguring Software for Your Modem PC Initialization StringsOther Parameters Changing Default ParametersConfiguring Software for Your Computer AT &F S0=0 &F9 &W0 CRSimple Operations Answer/Originate Voice/Data Toggle SwitchModem Basics Manual Dial and Automatic Answer Dialing/On-Line/Answering Manual Dial and Automatic AnswerAutomatic Leased Line Restoral Operation Manual Dial Backup Call TerminationDial Backup and Leased Line Restoral Dial-Up Operation Manual Call OriginationAutomatic Answering Manual AnsweringCall Termination Abort TimerHandshaking Details Command Mode Functional Modes AT Command EditingCommand Mode Summary of AT Commands Functional ModesStore Modem Configure Data Standard AT Result Codes Result CodesMulti-Tech Result Codes Dialing Commands Dialing Action CommandsPulse or Tone Dial P T Dial Modifier CommandsVoice/Data Dialing $VD Set Pulse Dial Ratios &PAutomatic Pauses in Dialing Return to Command Mode After Dial Command ExecutionReverse the Mode of Operation R Long Space Disconnect YCalling Card Detect Tones $ Quiet Answer @Number Linking NN Phone Number Memory CommandsStoring Phone Numbers D...N Listing Numbers Stored in Memory LModem Reset Z Configuration and Default Storage CommandsLoading Factory Defaults &F Synchronous Transmit Clock Select &X Async/Sync Mode Switching &MUnix Uucp Spoofing $SP Result 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 Guard Tones Not Used in BAI/BLI Models &G Phone Line Conditioning CommandsEnable/Disable Trelis Coded Modulation #T Bell/V.21 ToneCleardown at Disconnect &CD Fallback Modes When On-Line #FEnable/Disable Lowspeed Fast Connect $FC Auto Speed Detect #AData Terminal Ready Control &D 7 RS-232C Interface Control CommandsCarrier Detect Control &C CTS Control &RDSR/CD Interaction Control &SF Data Set Ready Control &SCTS/RTS Interaction Control &RF Auto-Reliable Mode &E1 Error Correction CommandsNormal Mode &E0 Reliable Mode &E2Mode Select #L Auto-Reliable Buffering $ARetransmit Count $R Enable/Disable Auto Reliable Fallback Character $FError Correction/300bps $E Xon/Xoff Flow Control &E5 Flow Control CommandsHardware Flow Control &E4 Hewlett-Packard ENQ/ACK Pacing &E9 Xon/Xoff Pass-Through &E7Send Xon/Xoff Characters #X Maximum Block Size &BS Normal Mode Modem Flow Control On &E11Terminal/Computer Initiated Pacing &E13 Parity Selection #PEnq/Ack Pacing Commands Normal/Auto-Reliable/Reliable Mode CommandsXon/Xoff Pass-Through Commands Modem Baud Rate $MB Speed Conversion CommandsSpeed Conversion $BA Serial Port Baud Rate $SB Immediate Action Commands Listing On-Line Diagnostics L8 Off Hook HExiting Command Mode, Going Back On-Line O Line Probe CommandsForce Answer Mode a Registers 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 DurationS16 Callback Attempts S15 Callback Time DelayS19 MT2834BL Only Dial-Back Timer S17 Changing Break TimeS24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S26 Failed Password AttemptsS29 Local Inactivity Timer S25 DTR Dropout TimeS36 Time Between DTR Inactive and Modem Off-Hook S30 Inactivity TimerS32 Time Elapse for Escape Sequence S37 Time Between DTR Active and Modem On-HookS48 Program V.34bis Connect Speeds Examples of Reading Values Reading and Assigning S-Register ValuesExamples of Assigning Values AT Command and S-Register Summary Callback Security and Remote Configuration Callback Feature Description Callback Security and Remote ConfigurationRemote Configuration Description To change your Remote Configuration feature statusTo set parity of the password/message prompt AT#CBN0xxxxxxxxxxCRCallback Operational Sequence Procedures Remote Configuration Procedures Remote Configuration Operation ProceduresRemote Configuration and Callback Security AT Commands Remote Configuration/Callback Security S-Registers DIP-Switch Settings Dip-Switch Settings MT2834BA PC BoardDIP-Switch Option Settings Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UP = Down Down Dip-Switch Settings Speaker Volume Control Recording Option Configurations Switch Function Position EffectDIP Switches #15-16 MT2834BL DIP Switches #13-14DIP Switches #15-16 MT2834BA Warranty, 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 Appendix a Upgrading Your Modem’s Firmware Upgrade OverviewAppendix a Upgrading Your Modem’s Firmware Download 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 TroubleshootingAppendix 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 Command Values Description Appendix C AT Command SummaryAppendix C AT Command Summary DsNd Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 100$FCn MT2834BL Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 101$MBn Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 102$SBn Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 103Dial Tone Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 104Callback Security/Remote Configuration Command Summary Password Command Summary 25bis Commands25bis Operation Delayed and Forbidden NumbersAppendix D V.25bis Operation Appendix D V.25bis Operation25bis Set-Up and Initialization 25bis Mode AT Commands25bis DIP-Switches Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 108Change 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 CommandITU V.25bis Country Specific Information Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 112 Appendix D V.25bis Operation BelgiumSingapore Appendix E MultiModemBA Cables Appendix E MultiModemBA/BL CablesFCC Part Appendix F Regulatory InformationFCC Part 68 Telecom Canadian Limitations Notice Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 115South African Notice Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 116Appendix G Weee Statement Index Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 11791-116 Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 118PBX/CBX Disconnect Drop Time for DSR/CTS/CD63 Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 119