Summary of AT Commands | Multitech MT1432BA, MT2834BAI guide

MultiModemBA User Guide

5.2Summary 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
STORE MODEM	&F	Load Factory Defaults
CONFIGURATIONS	&W	Store Configuration & S-Register
AND DEFAULTS		Parameters
	Z	Reset Modem
	V	Result Code Terse/Verbose
	$SP	UNIX/"Spoofing”
	&M	Synchronous/Asynchronous Mode Select
	&X	Synchronous Transmit Clock Select
CONFIGURE	Q	Result Codes Enable/Disable Response
COMMAND	&Q	Result Code Selection
RESPONSES	E	Echo Command Characters
	V	Result Code Terse/Verbose
	X	Result Code...Basic/Extended/Call Progress
CONDITION	&G	Guard Tones
PHONE LINE	M	Monitor Phone Line
	&T	Remote Digital Loop Signal
	#T	Enable/Disable Trellis Coded Modulation
	B	Bell/V.21 Tones
	#F	Fallback When On-Line
	&CD	Cleardown at Disconnect (2834 Series only)
	#A	Auto-Speed Detect

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Multitech MT1432BA, MT2834BAI manual Summary of AT Commands

Contents

User Guide User Guide Record of Revisions Contents Command Mode Callback Security and Remote ConfigurationManual Dial and Automatic Answer Registers Modem Testing DIP-Switch SettingsWarranty, Service and Tech Support AppendixesPage Introduction and Description How To Use This Manual Introduction AT Command Mode Operation Callback and Remote ConfigurationTesting Your Modem DIP-Switches Modem Features 1 2834 Series Features2 1432 Series Features 3 932 Series Features Fax Features Technical Specifications Mode of Operation Intelligent FeaturesCommand Buffer Introduction and Description Fax Carrier Frequencies Carrier FrequenciesCarrier Frequencies 300 bps Bell Standard Transmit Level Connectors DiagnosticsIndicators Operating Temperature Models Only PowerModem LED Indicators Controls on PC Board MultiModemBA User Guide Installation and Connection What is in Your Modem Package? Unpacking MT2834BA shown Installation Procedure InstallationSafety Warnings MultiModemBA/BAI Connections Loading Trio DataFAX Software MultiModemBA User Guide Is Your Modem Ready for Use? MultiModemBA User Guide Software Configuration and Modem Basics Serial Port Limitations How Can You Identify Your Uart Type? Configuring Your Software Configuring Software for Your ModemSoftware Configuration 16550 Uart and Windows Other Parameters Changing Default ParametersPC Initialization Strings Configuring Software for Your Computer Configuring Software for the Remote SystemMacintosh Initialization Terminal Emulation When to Disable Data Compression Disabling Error CorrectionFile Transfer Protocols AT &F S0=0 X4 &E14 M Simple Operations Answer/Originate Voice/Data Toggle SwitchModem Basics MultiModemBA User Guide Manual Dial and Automatic Answer Dialing/On-Line/Answering Manual Dial and Automatic Answer Manual Call OriginationAutomatic Answering Manual Answering Handshaking Details Abort Timer Call Termination MultiModemBA User Guide Command Mode AT Command Editing Command Mode Functional Modes Summary of AT Commands Normal Mode Auto-Reliable ModeReliable Mode Flow Control Disabled Enable/Disable Reading Line Probe From DSP during handshake Display of Signal Strength InformationPasswords for Callback Phone Numbers Callback Security Enable/Disable Result Codes Multi-Tech Result Codes Series MultiModemBA User Guide Standard AT Result Codes Series Dialing Commands Dialing Action Commands Dial Command DContinuous Redial not used in BAI a or Dialing a Stored Number N Dial Modifier Commands Voice/Data Dialing $VDPulse or Tone Dial P T Set Pulse Dial Ratios &P Return to Command Mode After Dial Command Execution Reverse the Mode of Operation RAutomatic Pauses in Dialing Long Space Disconnect Y Calling Card Detect Tones $ Quiet Answer @ Phone Number Memory Commands Storing Phone Numbers D...NNumber Linking NN Listing Numbers Stored in Memory L Modem Reset Z Configuration and Default Storage CommandsLoading Factory Defaults &F Synchronous Transmit Clock Select &X Async/Sync Mode Switching &MUnix Uucp Spoofing $SP Command Response Result Code Commands Echo Command Mode Characters EResult Codes Enable/Disable and No Response Answer Q Result Codes Multi-Tech or Standard AT &Q Result Codes Basic and Extended and Call Progress Selection Phone Line Conditioning Commands Enable/Disable Trelis Coded Modulation #TGuard Tones Not Used in BAI Models &G Bell/V.21 Tone Cleardown at Disconnect &CD 2834 Series only Fallback Modes When On-Line #FEnable/Disable Lowspeed Fast Connect $FC 2834 Series only Auto Speed Detect #A 7 RS-232C Interface Control Commands Carrier Detect Control &CData Terminal Ready Control &D CTS Control &R DSR/CD Interaction Control &SF Data Set Ready Control &SCTS/RTS Interaction Control &RF Error Correction Commands Normal Mode &E0Auto-Reliable Mode &E1 Reliable Mode &E2 Mode Select #L Originate ModeAnswer Mode Auto-Reliable Buffering $A Retransmit 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 Normal Mode Modem Flow Control On &E11 Terminal/Computer Initiated Pacing &E13Maximum Block Size &BS Parity Selection #P Enq/Ack Pacing Commands Normal/Auto-Reliable/Reliable Mode CommandsXon/Xoff Pass-Through Commands Modem Baud Rate $MB Speed Conversion CommandsSpeed Conversion $BA Command Mode Series Serial Port Baud Rate $SB Immediate Action Commands Listing On-Line Diagnostics L8 Off Hook H Exiting Command Mode, Going Back On-Line O Line Probe Commands 2834 Series onlyForce Answer Mode a MultiModemBA User Guide Registers Number of Rings Until Modem Answers Rings Which Have OccurredEscape Code Character Return Character Time for Carrier Abort Timer Line Feed CharacterBackspace Character Wait Time for Dial Tone S10 Carrier Loss Disconnect Delay Time S13 Remote Configuration Escape CharacterCarrier Detect Response Time S11 Tone Dialing Tone Spacing and Duration S15 Callback Time Delay S16 Callback AttemptsS17 Changing Break Time S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S26 Failed Password Attempts S29 Local Inactivity TimerS30 Inactivity Timer S32 Time Elapse for Escape Sequence S48 Program V.34bis Connect Speeds 2834 Series only S36 Time Between DTR Inactive and Modem Off-HookS37 Time Between DTR Active and Modem On-Hook Examples of Reading Values Reading and Assigning S-Register ValuesExamples of Assigning Values AT Command and S-Register Summary MultiModemBA User Guide Callback Security and Remote Configuration Callback Feature Description To change your Remote Configuration feature status Remote Configuration DescriptionCallback Security and Remote Configuration AT#CBN1xxxxxxxxxxCR To set parity of the password/message promptAT#CBN0xxxxxxxxxxCR Callback Operational Sequence Procedures Remote Configuration Procedures Remote Configuration Operation Procedures StepProcedure Remote Configuration and Callback Security AT Commands Assign Passwords for Callback Phone Numbers #CBNCallback Security Enable/Disable Change Login Password Erase Callback Password Erase Callback Phone Number #RDNxx Remote Configuration/Callback Security S-Registers MultiModemBA User Guide Modem Testing Introduction Modem Testing Local Analog Loopback Test/V.54 Loop Digital Loopback Test/V.54 Loop 2 Local/Manual 100 Digital Loopback Test/V.54 Loop 2 Remote/Automatic 101 Back-to-Back Test 4A. Back-to-Back Test Cabling Synchronous Mode Testing Local Analog Loopback Test Synchronous Mode Digital Loopback Test Local/Manual Synchronous Mode Synchronous Mode Digital Loopback Test local/manual 104 Digital Loopback Test Remote/Automatic Synchronous Mode Synchronous Mode Digital Loopback Test remote/automatic 105 MultiModemBA User Guide 106 DIP-Switch Settings PC Board 108 109 DIP-Switch Option SettingsDIP-Switch Settings 110 Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UP932 Series 111 112 113 114 Switch #16 Reserved for Future UseMultiModemBA User Guide Series Speaker Volume Control Recording Option ConfigurationsSwitch Function Position Effect 115 116 DIP Switches #13-14DIP Switches #15-16 Warranty, Service and Tech Support 118 Limited WarrantyOn-line Warranty Registration Service Warranty, Service and Tech SupportTech Support Recording Modem Information To Download a file Multi-Tech BBSTo log on to the Multi-Tech BBS Using FlashPro to Upgrade Modem Firmware About the Multi-Tech Fax-Back ServiceUpgrading the MultiModem About Multi-Tech’s Internet Presence 122 About Ordering AccessoriesSupplyNet Online Ordering Instructions Appendixes Appendix a Troubleshooting None of the LEDs Light When the Modem Is OnModem Does Not Respond to Commands 124 Appendix a Troubleshooting 125 Modem Dials But Cannot Make a Connection 126 Modem Cannot Connect When Answering Modem Disconnects While On-lineFile Transfer Is Slower Than It Should Be 127 128 Am Losing DataAm Getting Garbage Characters on the Monitor Appendix B Ascii Conversion Chart 129 Appendix C Dial Pulse and Tone-Dial Frequencies Dial PulsesTone Dial Frequencies 130 Appendix D AT Command Summary Command Values Description$An #An BS n $BA nCD n SN d $EBn #Fn$Fn 133 $Hn #Ln$MBn 134 NdNe $RnRFn Sr=n $SBn SFn$SPn #Tn 137 $VDn#Xn Callback Security/Remote Configuration Command Summary +++ATCR Password Command Summary 25bis Commands 140 Appendix E DIP-Switch SummaryAsynchronous Mode 141 Synchronous ModeAppendix E DIP-Switch Summary 142 Appendix F S-Register Summary S29 S30S32 S34 Appendix G Result Code Summary Appendix G Result Code SummaryTerse Digit Verbose Words Effect 145 146 Delayed and Forbidden Numbers Appendix H V.25bis Operation25bis Operation Appendix H V.25bis Operation 148 25bis DIP-Switches25bis Set-Up and Initialization 149 25bis Mode AT Commands25bis Responses Result Codes 25bis AT Commands Enable/Disable V.25bis Mode $V CommandChange Serial Baud Rate CSP Command Dial Phone Number Provided CRN Command Listing Delayed Phone Numbers RLD Command Listing Forbidden Phone Number RLF CommandDisregard or Connect to Incoming Calls DIC or CIC Command DTR Dialing $D Command ITU V.25bis Country Specific Information ItalySwitzerland Austria Appendix H V.25bis Operation France BelgiumSingapore 153 Appendix I MultiModemBA Cables Figure I-1. RS232 Cable IBM PC Appendix J RS-232C Interface Specifications Figure I-2. MAC Cable 155 Appendix J RS-232C Interface Specifications Signal Function Assignment Circuit SourcePin Designation Eia 156 Signal Ground Pin 7, SG AB Received Data Pin 3, RD BBRequest To Send Pin 4, RTS CA Clear To Send Pin 5, CTS CB Ring Indicator Pin 22, RI CE Test Voltage Pin 9Transmit Clock Pin 15, TC DB Receive Clock Pin 17, RC DD 159 Terminal Busy Out of Service Pin 25, OOSExternal Transmit Clock Pin 24, XTC EMC, Safety and Terminal Directive Compliance International Modem RestrictionsNew Zealand Telecom Warning Notice European Directives User Guide Statement 161 FCC Regulations for Telephone Line InterconnectionAppendix K Regulatory Information Canadian Limitations Notice Class a StatementFCC Part Industry Canada Index 163 Functional Description of RS232C SIG 164 165 166