User ManualTable of ContentsContents3Chapter 1 - Introduction and Description51.1 Introduction61.2 How To Use This Manual61.3 Modem Features71.3.1 MT2834BA/BL Series Features81.4 Fax Features81.5 Technical Specifications91.6 Power101.7 Modem LED Indicators111.8 Controls on PC Board12Chapter 2 - Installation and Connection132.1 What Is in Your Modem Package?142.2 Installation142.2.1 Safety Warnings142.2.2 Installation Procedure142.3 Installing PhoneTools, the Data Communications Software162.4 Is Your Modem Ready for Use?16Chapter 3 - Software Configuration and Modem Basics173.1 Introduction183.2 Configuring Your Software183.2.1 ConfiguringSoftware for Your Modem183.3 PC Initialization Strings183.3.1 Changing Default Parameters193.3.2 Other Parameters193.4 Configuring Software for Your Computer193.5 Modem Basics203.5.1 Simple Operations203.6 The Answer/Originate - Voice/Data Toggle Switch20Chapter 4 - Manual Dial and Automatic Answer214.1 Introduction224.2 Dialing/On-Line/Answering224.3 Automatic Leased Line Restoral Operation234.4 Manual Dial Backup Call Termination234.5 Dial Backup and Leased Line Restoral234.6 Dial-Up Operation244.7 Manual Call Origination244.8 Automatic Answering254.9 Manual Answering254.10 Handshaking Details264.11 Call Termination265.1 Introduction285.1.1 AT Command Editing285.1.2 Functional Modes285.2 Summary of AT Commands295.3 Result Codes325.4 Dialing Commands335.4.1 Dialing Action Commands335.4.2 Dial Modifier Commands345.4.3 Phone Number Memory Commands375.4.4 Configuration and Default Storage Commands385.4.5 Command Response (Result Code) Commands405.4.6 Phone Line Conditioning Commands425.4.7 RS-232C Interface Control Commands445.4.8 Error Correction Commands465.4.9 Flow Control Commands495.4.10 Compression, Error Correction, Flow Control, Pass-Through and Pacing Commands525.4.11 Speed Conversion Commands535.4.12 Immediate Action Commands555.4.13 Line Probe Commands57Chapter 6 - S-Registers586.1 Introduction596.2 Reading and Assigning S-Register Values666.2.1 Examples of Assigning Values666.2.2 Examples of Reading Values666.3 AT Command and S-Register Summary67Chapter 7 - Callback Security and Remote Configuration687.1 Introduction697.2 Callback Feature Description697.3 Remote Configuration Description707.3.1 Initial Setup Procedures for Callback and Remote Configuration.707.3.2 Remote Configuration Procedures737.4 Remote Configuration and Callback Security AT Commands747.5 Remote Configuration/Callback Security S-Registers75Chapter 8 - DIP-Switch Settings768.1 Introduction778.2 DIP-Switch Option Settings788.3 Speaker Volume Control838.4 Recording Option Configurations84Chapter 9 - Warranty, Service and Tech Support869.1 Introduction879.2 Multi-Tech Systems, Inc. Warranty & Repairs Policies878.3 Online Warranty Registration889.4 Replacement Parts899.5 Technical Support899.6 Internet Sites89Appendixes90Appendix A - Upgrading Your Modem's Firmware91Appendix B - Troubleshooting94Appendix E - MultiModemBA Cables113Appendix115Index119Index118Symbols1182 Wire/ 4 Wire Operation832 Wire/4 Wire Operation83A118Abort Timer60Answer Mode47Answer/Originate - Voice/Data Toggle Switch20AS/400 Mode79ASCII code18Asynchronous Word Lenth Selection ($EB)51Asynchronous/Synchronous Operation82AT18AT Command and S-Register Summary67AT Commands29"AT" Responses/Multi-Tech Responses81Auto-answer18Auto-Reliable Buffering ($A)47Auto-Reliable Mode (&E1)46B118Backspace Character60Basic Result Code41Basic/Extended Result Codes41Baud Adjust ($BA)53Baud rate118Serial port19Bell/V.21 Tone42BREAK AT<CR>56Buffer Length of Command Mode...After On-line Esca64C118Call waiting97Callback Attempts62Callback Operational Sequence Procedures72Callback Password and Dial Back Phone Number Entry71Callback Retry Attempts75Callback Security Enable/Disable (#DB)74Callback Time Delay62"Calling Card" Detect Tones ($)36Canadian Limitations Notice116Carrier Detect Control (&C)44Carrier Detect Response Time61Carrier Detect/DSR Forcing82Carrier Loss Disconnect Delay Time61Change LOGIN Password (#I)74Change Serial Baud Rate (CSP) Command109Change SETUP Password (#S)74Changing Break Time62Cleardown at Disconnect43COM ports118COM219Command Buffer9"Command mode"28Command string18Command Summary99Commands118Attention code18Load default configuration19Modem reset18Compatibility9Computer-or Terminal-Initiated Flow Control (Pacin52Connectors10Continuous Redial (A or :)33Controls10CTS Control (&R)44CTS/RTS Interaction Control (&RF)45D118Data Compression9Data Compression Commands52Data Format9Data Rates9Data Set Ready Control (&S)44Data Terminal Ready Control (&D)44Datacomm software18Configuration18dB Transmission Levels79Delayed and Forbidden Numbers107Diagnostics10Dial (D)33Dial Phone Number Provided (CRN) Command110Dialing a Stored Number (N)33Digital Loopback Test81Dimensions10DIP-Switches84Disregard or Connect to Incoming Calls (DIC or CIC110DSR/CD Interaction Control (&SF)45DTR Dialing ($D)33DTR Dialing ($D) Command110DTR Dropout Time63Dual-Tone Multi-Frequency dialing34"dumb" dialing41E118echnical Specifications9EMC, Safety, and R&TTE Directive Compliance116Enable/Disable Auto-Answer79Enable/Disable Auto-Reliable Fallback Character48Enable/Disable Command Mode81Enable/Disable V.25bis Mode ($V) Command109Enable/Suppress Responses78Erase Callback Password (#RCBNxx)74Erase Callback Phone Number (#RDNxx)74Error Correction9Escape Code Character59Escape Sequence Options (%E)56Escape Sequences (+++AT<CR>)56Examples of Assigning Values66Examples of Reading Values66Exiting Command Mode, Going Back On-Line (O)57Extended Result Codes41F119Failed Password Attempts75"fallback"43Fallback Modes When On-Line (#F)43Fax19Fax and Communications Software Won't Run98Fax Modulations10FCC Part 68 Telecom regulation115firmware119upgrading91flash memory91Flash On Hook (!)35Flash Wizard upgrade utility92Flow Control78Flow control97Flow Control - &E4/&E578Force Answer Mode (A)57Forced DTR78Frequency Stability10Front panel94Functional States28G119Garbage Characters98Guard Tones (&G)42H119"handshake"23Hardware Flow Control (&E4)49Help Screens ($H)55HOW TO COMMANDS29I119Immediate Action Line Probe Commands57Inactivity Timer63Indicators10Initialization strings18PC-compatible18initiating Line Probe57Intelligent Features9Internal/External Clocking82Internet addresses89L119Leased Line/Dial-Up Operation81Limited Warranty10Line Feed Character60"Link Request"46Listing Current Operating Parameters (L5 L7)55Listing Delayed Phone Numbers (RLD) Command110Listing Forbidden Phone Number (RLF) Command110Listing Numbers Stored in Memory (L)37Listing On-Line Diagnostics (L8)56Listing S-Register Values (L6)55Loading Factory Defaults (&F)38Local Inactivity Timer75Long Space Disconnect (Y)35Losing Data97M119Maximum Throughput Setting80Memory119Nonvolatile (NVRAM)19MNP 597Model Numbers9Modem Baud Rate ($MB)53Modem Cannot Connect When Answering97Modem Dials But Cannot Make a Connection96Modem Disconnects While Online97Modem Does Not Respond to Commands94Modem Reset (Z)38Modem-Initiated Flow Control Commands52Modulation9MT1432BL Connections15MT2834BL Cables113Multi-Tech Internet sites89N119New Zealand Telecom Warning Notice116noise information57Normal Mode (&E0)46Normal Mode Modem Flow Control (&E11)51Normal/Auto-Reliable/Reliable Mode Commands52Number of Rings Until Modem Answers59O119"On-line mode"28ordering replacement parts89Originate Mode47Originate/Answer Mode80P119Parameters18Changing defaults19Defaults19Parity18Parity Selection (#P)51Password Command Summary106Pause Time for Comma60PBX/CBX Disconnect Drop Time for DSR/CTS/CD63PBX/CBX systems63Power10Power supply94Program V.34bis Connect Speeds65Program V34 Connect Speeds65Pulse or Tone Dial (P T)34Q120Quiet Answer (@)36R120Reading of Line Probe Information Commands57registering your product88Reliable Mode (&E2)46Remote Configuration Character75Remote Configuration Escape Character61replacement parts89Request To Send Forced80Result codes18Result Codes Enable/Disable and No Response (Q)40Result Codes Verbose/Terse (V)40Retransmit Count ($R)48Return Character59Return character18Return to Command Mode After Dial Execution (;)35Reverse the Mode of Operation (R)35Rings Which Have Occurred59S120S-Registers120S318Safety Warning Telecom14SDLC/BSC Option78Send Xon/Xoff Characters (#X)50Serial cable95Serial port18Serial Port Baud Rate ($SB)54servicing your modem115Sessions18Set Pulse Dial Ratios (&P)34Signal Strength information57Signal to Noise Ratio information (SNR)57Slave Clocking80Slow File Transfer97smart dialing41South African Notice118Speaker10Speed Conversion ($BA)53Speed Switches82Storing Phone Numbers (D...N)37Summary67Synchronous Transmit Clock Select (&X)39T120Telephone line96Terminal mode94Terminal/Computer Initiated Pacing (&E13)51Testing94self-test94Time Elapse for Escape Sequence64Time for Carrier (Abort Timer)60Tone Dialing: Tone Spacing and Duration61Tradename9Transmission speed19Transmit Level10Two Wire Leased Line Connection113U120Unix UUCP Spoofing79Unix UUCP Spoofing ($SP)39upgrading the modem91V120V.25bis Mode AT Commands108V.25bis AT Commands109V.25bis Operation107V.25bis Responses (Result Codes)109V.25bis Set-Up and Initialization108V.42 Mode Select (#L)47V.42bis19W120Wait for New-Dial-Tone (W)35Wait Time for Dial Tone60"Wait-for-Carrier"28warranty115Weight10Windows 95 Autodetect Inquiry Command (I9)55Windows 95 HyperTerminal97X120Xon/Xoff Flow Control (&E5)49Xon/Xoff Pass-Through (&E7)50Xon/Xoff Pass-Through Commands52Size: 869 KBPages: 120Language: EnglishOpen manual