Multi-Tech Systems BA-Series Parity Selection #P, Normal/Auto-Reliable/Reliable Mode Commands

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Chapter 4 - Command Mode

Parity Selection #P

The #P command enables the setting of parity. AT#P0 selects no parity. AT#P1 selects odd parity. AT#P2 selects even parity and is the default value. Note when setting up your data comm software, it is critical that both your remote and local system's parity selection be set identically.

AT#P0 = no parity

AT#P1 = odd parity

AT#P2 = even parity

The factory default setting is AT#P2.

4.4.10Compression, Error Correction, Flow Control, Pass- Through and Pacing Commands

The modem has a variety of commands to control its error correction and data compression options. These additional commands are listed below. (Remember to precede each command with the AT characters.)

Normal/Auto-Reliable/Reliable Mode Commands:

&E0 = Normal Mode

&E1 = Auto-Reliable Mode*

&E2 = Reliable Mode

Modem-Initiated Flow Control Commands: &E3 = Disables flow control (no flow control)

&E4 = Hardware flow control (CTS on/off and RTS on/off)* &E5 = Xon/Xoff flow control

Xon/Xoff Pass-Through Commands:

&E6 = Modem responds to Xon/Xoff characters, but does not allow Xon/Xoff characters to pass through to remote site.*

&E7 = Modem responds to Xon/Xoff characters, and allows them to pass through to remote site. #X0 = Selects single Xoff character until Xon level returns*

#X1 = Selects multiple Xoff characters after buffer levels is full.

Enq/Ack Pacing Commands:

&E8 = Enq/Ack method of pacing off* &E9 = Enq/Ack method of pacing on

Normal Mode Modem Flow Control Commands: &E10 = Normal Mode Modem Flow Control off*

&E11 = Normal Mode Modem Flow Control (Xon/Xoff) on

Computer-or Terminal-Initiated Flow Control (Pacing) Commands: &E12 = Pacing off*

&E13 = Pacing on (either RTS on/off or Xon/Xoff depending on the setting of &E4 or &E5).*

Data Compression Commands: &E14 = Data Compression disabled &E15 = Data Compression enabled*

*Factory Default setting

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Contents User Guide Record of Revisions User GuideContents Index 106 Introduction and Description Introduction How To Use This ManualWarranty, Service & Technical Support Modem FeaturesCallback and Remote Configuration DIP-SwitchesFax Features 1 2834 Series FeaturesTechnical Specifications Power MT2834 LED Display Modem LED IndicatorsControls on PC Board Installation and Connection Installation What is in Your Modem Package?Step Procedure Safety WarningsInstallation Procedure Installation and ConnectionMultiModemBA/BAI Connections Installing Data Communications SoftwareSoftware Configuration and Modem Basics AT &F X4 S0=0 M Configuring Your SoftwareConfiguring Software for Your Modem PC Initialization StringsOther Parameters Changing Default ParametersConfiguring Software for Your Computer Configuring Software for the Remote SystemFile Transfer Protocols Terminal EmulationCommand Mode Functional Modes AT Command EditingCommand Mode Summary of AT CommandsStore Modem Configure Data Multi-Tech Result Codes Result CodesStandard AT Result Codes Dialing a Stored Number N Dialing Commands Dialing Action CommandsDial Command D Continuous Redial not used in BAI a orPulse or Tone Dial P T Dial Modifier CommandsDTR Dialing $D Voice/Data Dialing $VDAutomatic Pauses in Dialing Return to Command Mode After Dial Command ExecutionReverse the Mode of Operation R Set Pulse Dial Ratios &PQuiet Answer @ Phone Number Memory CommandsFlash On Hook Calling Card Detect Tones $Number Linking NN Configuration and Default Storage CommandsListing Numbers Stored in Memory L Unix Uucp Spoofing $SP Loading Factory Defaults &FModem Reset Z Async/Sync Mode Switching &MResult Codes Multi-Tech or Standard AT &Q Command Response Result Code CommandsEcho Command Mode Characters E Result Codes Enable/Disable and No Response Answer QResult Codes Basic and Extended and Call Progress Selection Phone Line Conditioning CommandsGuard Tones Not Used in BAI Models &G Phone Line Monitoring Speaker M Enable/Disable Trelis Coded Modulation #TFallback Modes When On-Line #F Bell/V.21 ToneAuto Speed Detect #A 7 RS-232C Interface Control CommandsEnable/Disable Lowspeed Fast Connect $FC Cleardown at Disconnect &CDCTS/RTS Interaction Control &RF Data Terminal Ready Control &DCTS Control &R Data Set Ready Control &SError Correction Commands Auto-Reliable Buffering $A Enable/Disable Auto Reliable Fallback Character $F Error Correction/300bps $E Flow Control Commands Retransmit Count $R Xon/Xoff Flow Control &E5 Hardware Flow Control &E4Xon/Xoff Pass-Through &E7 Terminal/Computer Initiated Pacing &E13 Normal Mode Modem Flow Control On &E11Send Xon/Xoff Characters #X Hewlett-Packard ENQ/ACK Pacing &E9Parity Selection #P Normal/Auto-Reliable/Reliable Mode CommandsXon/Xoff Pass-Through Commands Enq/Ack Pacing CommandsSpeed Conversion $BA Speed Conversion CommandsModem Baud Rate $MB Serial Port Baud Rate $SB Immediate Action Commands Off Hook H Force Answer Mode aFormat of Line Probe Graph or Table Commands Line Probe CommandsExiting Command Mode, Going Back On-Line O Enable/Disable Reading of Line Probe Information CommandsRegisters Return Character Number of Rings Until Modem AnswersRings Which Have Occurred Escape Code CharacterWait Time for Dial Tone Time for Carrier Abort TimerLine Feed Character Backspace CharacterS11 Tone Dialing Tone Spacing and Duration S10 Carrier Loss Disconnect Delay TimeS13 Remote Configuration Escape Character Carrier Detect Response TimeS24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S15 Callback Time DelayS16 Callback Attempts S17 Changing Break TimeS32 Time Elapse for Escape Sequence S26 Failed Password AttemptsS29 Local Inactivity Timer S30 Inactivity TimerS48 Program V.34bis Connect Speeds 2834 Series only Reading and Assigning S-Register ValuesS36 Time Between DTR Inactive and Modem Off-Hook S37 Time Between DTR Active and Modem On-HookExamples of Assigning Values AT Command and S-Register SummaryExamples of Reading Values Callback Security and Remote Configuration Remote Configuration Description Callback Feature 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 Remote Configuration Operation Procedures StepProcedure Remote Configuration ProceduresCallback Security and Remote Configuration Callback Operational Sequence ProceduresAT#I=yyyyyyyyyyCR Remote Configuration and Callback Security AT CommandsCallback Security Enable/Disable Change Login PasswordRemote Configuration/Callback Security S-Registers Local Inactivity Timer S29 DIP-Switch Settings PC Board DIP-Switch Option SettingsDIP-Switch Settings Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UPMultiModemBA User Guide = Down Down Switch #16 Reserved for Future Use Speaker Volume ControlSwitch Function Position Effect Recording Option ConfigurationsDIP Switches #15-16 DIP Switches #13-14Warranty, Service and Tech Support Warranty, Service, and Technical Support Multi-Tech Systems, Inc. Warranty & Repairs PoliciesRepair Procedures for International Distributors Online Warranty RegistrationCountry Telephone Replacement PartsTechnical Support Internet SitesAppendixes Appendix a Upgrading Your Modem’s Firmware Upgrade OverviewDownload 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 Am Losing Data Modem Cannot Connect When AnsweringModem Disconnects While On-line File Transfer Is Slower Than It Should BeAm Getting Garbage Characters on the Monitor Appendix C AT Command Summary Apendix C AT Command SummaryCommand Values Description SN d MultiModemBA User Guide Command Values Description$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 Appendix D V.25bis Operation 25bis Mode AT Commands25bis DIP-Switches 25bis Set-Up and Initialization25bis Responses Result Codes 25bis AT CommandsEnable/Disable V.25bis Mode $V Command Change Serial Baud Rate CSP CommandDisregard or Connect to Incoming Calls DIC or CIC Command Dial Phone Number Provided CRN CommandListing Delayed Phone Numbers RLD Command Listing Forbidden Phone Number RLF CommandSwitzerland DTR Dialing $D CommandITU V.25bis Country Specific Information ItalySingapore Appendix E MultiModemBA Cables AustriaFrance BelgiumFigure E-1. RS232 Cable IBM PC Appendix E MultiModemBA CablesIndustry Canada Appendix F Regulatory Information FCC PartFCC Part 68 Telecom Appendix F Regulatory Information104 Canadian Limitations NoticeInternational Modem Restrictions EMC, Safety, and R&TTE Directive Compliance105 106 Index107 Index108 PBX/CBX Disconnect Drop Time for DSR/CTS/CD53109