Multi-Tech Systems BA-Series manual Summary of AT Commands, Command Mode

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Chapter 4 - Command Mode

COMMAND +++AT

MODE


HANG						Dial (D or A) command,
UP						or incoming phone call




					WAIT FOR
					CARRIER
		No carrier
		No carrier				Carrier detected
		detected				Carrier detected
		detected

Carrier lost

ON-LINE			AT0 Command
ON-LINE			AT0 Command
MODE
MODE

Figure 41. Functional Modes

4.2Summary of AT Commands

A wide variety of autodial operations and modem options can be controlled when the modem is in Command Mode. Remember, nearly all commands begin with AT.

These commands are organized into several functional groups. An alphabetical summary of commands is provided in Appendix D.

HOW TO	COMMANDS
DIAL	D	Dial
	A: or : Continuous Redial
	$D	DTR Dialing
	$VD	Voice/Data Dialing
	N	Dial a Stored Number
MODIFY DIALING	P/T	Pulse/Tone Dialing
PROCEDURES	&P	Set Pulse Dial Ratios
	,	Automatic Pauses in dialing
	Y	Long Space Disconnect
	W	Wait for New Dial Tone
	;	Return to Command Mode After Dial
		Command
	R	Reverse Mode of Operation
	!	Flash On Hook
	$	AT&T "Calling Card" Tones
	@	Quiet Answer
MEMORIZE PHONE
NUMBERS	D...N	Store Phone Numbers
	NN	Number Linking
	L	List Numbers Stored in Memory

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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 System File Transfer Protocols Terminal EmulationCommand Mode Functional Modes AT Command EditingCommand Mode Summary of AT CommandsStore Modem Configure Data Standard AT Result Codes Result CodesMulti-Tech 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 $Listing Numbers Stored in Memory L Configuration and Default Storage CommandsNumber Linking NN 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 QGuard Tones Not Used in BAI Models &G Phone Line Conditioning CommandsResult Codes Basic and Extended and Call Progress Selection 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 $FRetransmit Count $R Flow Control CommandsError Correction/300bps $E Xon/Xoff Pass-Through &E7 Hardware Flow Control &E4Xon/Xoff Flow Control &E5 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 CommandsModem Baud Rate $MB Speed Conversion CommandsSpeed Conversion $BA 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 Reading Values AT Command and S-Register SummaryExamples of Assigning Values Callback Security and Remote Configuration Remote Configuration Description Callback Feature 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 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 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 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 Command Values Description Apendix C AT Command SummaryAppendix C AT Command Summary SN d MultiModemBA User Guide Command Values Description$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 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 Notice105 EMC, Safety, and R&TTE Directive ComplianceInternational Modem Restrictions 106 Index107 Index108 PBX/CBX Disconnect Drop Time for DSR/CTS/CD53109