112 | Multitech MT2834BAI, MT1432BA specification

MultiModemBA User Guide

Switch #7

Request To Send Forced - "RTS"

(Asynchronous/Synchronous Mode/Leased Line/Dial-Up)

If your computer or terminal uses RTS-CTS protocol (typically used in some synchronous applications, but also if using hardware pacing for V.42 error correction or speed conversion), you may want to set RTS to function independently of CTS (DIP-Switch #7 UP). For most applications, especially asynchronous, this switch should be set so that RTS is forced On (DIP-Switch #7 DOWN)

RTS functions Normally RTS forced On Factory Default Setting

=Switch #7 UP

=Switch #7 DOWN

=DOWN

Switch #8

Enable/Disable Command Mode -- "Com"

(Asynchronous/Synchronous Mode/Leased/Dial-Up)

In some applications you may want to disable the modem's Command mode so that the modem does not recognize or react to AT or V.25bis commands. This may be true in strictly auto-answer applications where no call origination is required. Place DIP-Switch #8 in the DOWN position to enable Command mode. Place DIP-Switch #8 in the UP position to disable Command mode. The factory default setting is Command mode enabled.

Disable Command Mode	=	Switch #8 UP
Enable Command Mode	=	Switch #8 DOWN
Factory Default Setting	=	DOWN

Switch #9

Digital Loopback Test

(Asynchronous/Synchronous Mode/Leased Line/Dial-Up)

When in Synchronous mode, this switch controls both Local Digital Loop and Remote Digital Loop tests while on-line. When the Voice/Data switch is toggled to the Answer mode position (UP) and DIP-Switch #9 is in the UP position, the modem performs the Local Digital Loopback test. When DIP- Switch #9 is DOWN and the Voice/Data switch is toggled to Answer mode position (UP), the modem performs the Remote Digital Loopback test.

Local Digital Loopback Test	=	Switch #9 UP
Remote Digital Loopback Test	=	Switch #9 DOWN
Factory Default Setting	=	DOWN

Switch #10

Leased Line/Dial-Up Operation -- "DDD"

(Asynchronous/Synchronous Mode/Leased Line/Dial-Up)

The modem operates in either leased-line or dial-up modes. This switch controls leased-line/dial-up operation. Place DIP-Switch #10 in the UP position for Dial-Up operation. Place DIP-Switch #10 in the DOWN position for Leased-Line operation

Dial-Up Operation	=	Switch #10 UP
Leased Line Operation	=	Switch #10 DOWN
Factory Default Setting	=	UP

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Multitech MT2834BAI, MT1432BA manual 112

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 Modem LED Indicators PowerModels Only Controls on PC Board MultiModemBA User Guide Installation and Connection What is in Your Modem Package? Unpacking MT2834BA shown Safety Warnings InstallationInstallation Procedure 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 PC Initialization Strings Changing Default ParametersOther Parameters 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 Modem Basics Answer/Originate Voice/Data Toggle SwitchSimple Operations MultiModemBA User Guide Manual Dial and Automatic Answer Dialing/On-Line/Answering Automatic Answering Manual Call OriginationManual Dial and Automatic Answer 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 Loading Factory Defaults &F Configuration and Default Storage CommandsModem Reset Z Unix Uucp Spoofing $SP Async/Sync Mode Switching &MSynchronous Transmit Clock Select &X 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 Enable/Disable Lowspeed Fast Connect $FC 2834 Series only Fallback Modes When On-Line #FCleardown at Disconnect &CD 2834 Series only Auto Speed Detect #A 7 RS-232C Interface Control Commands Carrier Detect Control &CData Terminal Ready Control &D CTS Control &R CTS/RTS Interaction Control &RF Data Set Ready Control &SDSR/CD Interaction Control &SF Error Correction Commands Normal Mode &E0Auto-Reliable Mode &E1 Reliable Mode &E2 Mode Select #L Originate ModeAnswer Mode Auto-Reliable Buffering $A Error Correction/300bps $E Enable/Disable Auto Reliable Fallback Character $FRetransmit Count $R Hardware Flow Control &E4 Flow Control CommandsXon/Xoff Flow Control &E5 Send Xon/Xoff Characters #X Xon/Xoff Pass-Through &E7Hewlett-Packard ENQ/ACK Pacing &E9 Normal Mode Modem Flow Control On &E11 Terminal/Computer Initiated Pacing &E13Maximum Block Size &BS Parity Selection #P Xon/Xoff Pass-Through Commands Normal/Auto-Reliable/Reliable Mode CommandsEnq/Ack Pacing Commands Speed Conversion $BA Speed Conversion CommandsModem Baud Rate $MB Command Mode Series Serial Port Baud Rate $SB Immediate Action Commands Listing On-Line Diagnostics L8 Off Hook H Force Answer Mode a Line Probe Commands 2834 Series onlyExiting Command Mode, Going Back On-Line O 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 S37 Time Between DTR Active and Modem On-Hook S36 Time Between DTR Inactive and Modem Off-HookS48 Program V.34bis Connect Speeds 2834 Series only Examples of Assigning Values Reading and Assigning S-Register ValuesExamples of Reading Values AT Command and S-Register Summary MultiModemBA User Guide Callback Security and Remote Configuration Callback Feature Description Callback Security and Remote Configuration Remote Configuration DescriptionTo change your Remote Configuration feature status AT#CBN0xxxxxxxxxxCR To set parity of the password/message promptAT#CBN1xxxxxxxxxxCR 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 DIP-Switch Settings DIP-Switch Option Settings109 932 Series Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UP110 111 112 113 MultiModemBA User Guide Series Switch #16 Reserved for Future Use114 Speaker Volume Control Recording Option ConfigurationsSwitch Function Position Effect 115 DIP Switches #15-16 DIP Switches #13-14116 Warranty, Service and Tech Support On-line Warranty Registration Limited Warranty118 Service Warranty, Service and Tech SupportTech Support Recording Modem Information To log on to the Multi-Tech BBS Multi-Tech BBSTo Download a file Using FlashPro to Upgrade Modem Firmware About the Multi-Tech Fax-Back ServiceUpgrading the MultiModem About Multi-Tech’s Internet Presence SupplyNet Online Ordering Instructions About Ordering Accessories122 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 Am Getting Garbage Characters on the Monitor Am Losing Data128 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 #Xn $VDn137 Callback Security/Remote Configuration Command Summary +++ATCR Password Command Summary 25bis Commands Asynchronous Mode Appendix E DIP-Switch Summary140 Appendix E DIP-Switch Summary Synchronous Mode141 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 25bis Set-Up and Initialization 25bis DIP-Switches148 25bis Responses Result Codes 25bis Mode AT Commands149 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 External Transmit Clock Pin 24, XTC Terminal Busy Out of Service Pin 25, OOS159 EMC, Safety and Terminal Directive Compliance International Modem RestrictionsNew Zealand Telecom Warning Notice European Directives User Guide Statement Appendix K Regulatory Information FCC Regulations for Telephone Line Interconnection161 Canadian Limitations Notice Class a StatementFCC Part Industry Canada Index 163 Functional Description of RS232C SIG 164 165 166