Multi-Tech Systems MT2834BL manual 1 MT2834BA/BL Series Features, Fax Features

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Chapter 1 - Introduction and Description

1.3.1MT2834BA/BL Series Features

Your MT2834BA/BL modem meets the proposed Enhanced V.34 ITU standard for data signalling rates as high as 33.6/31.2K bps in full duplex mode. Enhanced V.34 is an extension of V.32/V.32bis/ V34 standards, and supports and is compatible with those features, including EIA extended Automode; adaptive line probing; automatic symbol rate and carrier frequency during start-up; and retrain and rate renegotiation (in 2400 bps increments).

The major application for the MT2834BL is in 4-wire leased line networks with the addition of dial backup capability. With this capability, the dial-up feature saves any down time if the leased line fails. Since the MT2834BL operates according to ITU V.34 modulation, it can operate full-duplex over two wires, so that the dial backup mode performs the same throughput as the leased line.

The MT2834BA/BL features ITU V.25bis standard for synchronous dialing, ITU V.42 error correction and V.42bis data compression, providing 100% error-free data transmission. V.42 error correction incorporates MNP( Classes 3 and 4, and LAP-M. You may select V.42bis data compression for 4-1 throughput, or MNP Class 5 for 2-1 throughput.)

1.4Fax Features

Your modem meets the ITU V.17 standard for sending and receiving faxes. When linked to a compatible fax machine or modem, it can transmit faxes at 14,4 K bps. It also meets the ITU’s Group 3 Designation for sending and receiving faxes at 9600 bps; and Group 2 Designation for sending and receiving faxes at 4800 bps. The modem is also downward-compatible with modems to speeds as low as 300 bps, so it can send and receive faxes with any fax machine in the world.

Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide

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Contents User Guide User Guide Record of Revisions Date DescriptionPatents TrademarksContents Registers Index 117Introduction and Description How To Use This Manual IntroductionModem Features 1 MT2834BA/BL Series Features Fax FeaturesTechnical Specifications Power Modem LED Indicators MT2834BA LED DisplayControls on PC Board Installation and Connection What Is in Your Modem Package? InstallationSafety Warnings Installation ProcedureMultiModemBA Connections Installing PhoneTools, the Data Communications Software Is Your Modem Ready for Use?Software Configuration and Modem Basics Configuring Your Software Configuring Software for Your ModemSoftware Configuration PC Initialization StringsChanging Default Parameters Configuring Software for Your ComputerOther Parameters AT &F S0=0 &F9 &W0 CRSimple Operations Answer/Originate Voice/Data Toggle SwitchModem Basics Manual Dial and Automatic Answer Dialing/On-Line/Answering Manual Dial and Automatic AnswerAutomatic Leased Line Restoral Operation Manual Dial Backup Call TerminationDial Backup and Leased Line Restoral Dial-Up Operation Manual Call OriginationAutomatic Answering Manual AnsweringCall Termination Abort TimerHandshaking Details Command Mode Functional Modes AT Command EditingCommand Mode Summary of AT Commands Functional ModesStore Modem Configure Data Standard AT Result Codes Result CodesMulti-Tech Result Codes Dialing Commands Dialing Action CommandsDial Modifier Commands Voice/Data Dialing $VDPulse or Tone Dial P T Set Pulse Dial Ratios &PReturn to Command Mode After Dial Command Execution Reverse the Mode of Operation RAutomatic Pauses in Dialing Long Space Disconnect YCalling Card Detect Tones $ Quiet Answer @Phone Number Memory Commands Storing Phone Numbers D...NNumber Linking NN Listing Numbers Stored in Memory LModem 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 &QResult Codes Basic and Extended and Call Progress Selection Phone Line Conditioning Commands Enable/Disable Trelis Coded Modulation #TGuard Tones Not Used in BAI/BLI Models &G Bell/V.21 ToneFallback Modes When On-Line #F Enable/Disable Lowspeed Fast Connect $FCCleardown at Disconnect &CD Auto Speed Detect #A7 RS-232C Interface Control Commands Carrier Detect Control &CData Terminal Ready Control &D CTS Control &RDSR/CD Interaction Control &SF Data Set Ready Control &SCTS/RTS Interaction Control &RF Error Correction Commands Normal Mode &E0Auto-Reliable Mode &E1 Reliable Mode &E2Mode Select #L Auto-Reliable Buffering $ARetransmit 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 #PEnq/Ack Pacing Commands Normal/Auto-Reliable/Reliable Mode CommandsXon/Xoff Pass-Through Commands Modem Baud Rate $MB Speed Conversion CommandsSpeed Conversion $BA Serial Port Baud Rate $SB Immediate Action Commands Listing On-Line Diagnostics L8 Off Hook HExiting Command Mode, Going Back On-Line O Line Probe CommandsForce Answer Mode a Registers Number of Rings Until Modem Answers Rings Which Have OccurredEscape Code Character Return CharacterTime for Carrier Abort Timer Line Feed CharacterBackspace Character Wait Time for Dial ToneS10 Carrier Loss Disconnect Delay Time S13 Remote Configuration Escape CharacterCarrier Detect Response Time S11 Tone Dialing Tone Spacing and DurationS15 Callback Time Delay S19 MT2834BL Only Dial-Back TimerS16 Callback Attempts S17 Changing Break TimeS26 Failed Password Attempts S29 Local Inactivity TimerS24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S25 DTR Dropout TimeS30 Inactivity Timer S32 Time Elapse for Escape SequenceS36 Time Between DTR Inactive and Modem Off-Hook S37 Time Between DTR Active and Modem On-HookS48 Program V.34bis Connect Speeds Examples of Reading Values Reading and Assigning S-Register ValuesExamples of Assigning Values AT Command and S-Register Summary Callback Security and Remote Configuration Callback Feature Description Callback Security and Remote ConfigurationRemote Configuration Description To change your Remote Configuration feature statusTo set parity of the password/message prompt AT#CBN0xxxxxxxxxxCRCallback Operational Sequence Procedures Remote Configuration Procedures Remote Configuration Operation ProceduresRemote Configuration and Callback Security AT Commands Remote Configuration/Callback Security S-Registers DIP-Switch Settings Dip-Switch Settings MT2834BA PC BoardDIP-Switch Option Settings Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UP = Down Down Dip-Switch Settings Speaker Volume Control Recording Option Configurations Switch Function Position EffectDIP Switches #15-16 MT2834BL DIP Switches #13-14DIP Switches #15-16 MT2834BA Warranty, Service and Tech Support Multi-Tech Systems, Inc. Warranty & Repairs Policies Warranty, Service, and Technical SupportOnline Warranty Registration Repair Procedures for International DistributorsReplacement Parts Technical SupportInternet Sites Country TelephoneAppendixes Appendix a Upgrading Your Modem’s Firmware Upgrade OverviewAppendix a Upgrading Your Modem’s Firmware Download the Upgrade File Upgrade the Modem’s Firmware Appendix B Troubleshooting None of the LEDs Light When the Modem Is OnModem Does Not Respond to Commands Appendix B TroubleshootingAppendix B Troubleshooting Modem Dials But Cannot Make a Connection Modem Cannot Connect When Answering Modem Disconnects While On-lineFile Transfer Is Slower Than It Should Be Am Losing DataAm Getting Garbage Characters on the Monitor Command Values Description Appendix C AT Command SummaryAppendix C AT Command Summary DsNd Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 100$FCn MT2834BL Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 101$MBn Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 102$SBn Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 103Dial Tone Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 104Callback Security/Remote Configuration Command Summary Password Command Summary 25bis CommandsDelayed and Forbidden Numbers Appendix D V.25bis Operation25bis Operation Appendix D V.25bis Operation25bis Mode AT Commands 25bis DIP-Switches25bis Set-Up and Initialization Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 10825bis AT Commands Enable/Disable V.25bis Mode $V CommandChange Serial Baud Rate CSP Command 25bis Responses Result CodesDial Phone Number Provided CRN Command Listing Delayed Phone Numbers RLD CommandListing Forbidden Phone Number RLF Command Disregard or Connect to Incoming Calls DIC or CIC CommandITU V.25bis Country Specific Information Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 112 Appendix D V.25bis Operation BelgiumSingapore Appendix E MultiModemBA Cables Appendix E MultiModemBA/BL CablesFCC Part Appendix F Regulatory InformationFCC Part 68 Telecom Canadian Limitations Notice Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 115South African Notice Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 116Index Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 11791-116 Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 118PBX/CBX Disconnect Drop Time for DSR/CTS/CD63 Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 119