25bis Set-Up and Initialization, 148 | Multi-Tech Systems BL-Series

MultiModemBL User Guide

Another asynchronous mode concern is the problem of connecting at a different speed than the speed at which the serial port is set. If your modem port speed is different from the serial port speed, you must either:

1)Enable speed conversion and have flow control on, or

2)Enable connect responses (with the ATX1 command) and change the serial baud rate after receiving a connect message.

If the $VD1 command is entered when in Auto-Answer mode, the modem answers immediately upon receiving the first ring.

There is no disconnect message (NO CARRIER) if a normal connection is made.

V.25bis Set-Up and Initialization

Before you operate your modem in the V.25bis mode, you need to make sure it is set up properly (various RS-232 lines such as DSR and CTS act as specified in the V.25bis standard). Setup involves proper DIP-Switch settings and soft-switches (software controlled conditions).

V.25bis DIP-Switches

#1 Unforced DTR

#2 NA

#3 NA

#4 NA

#5 Auto-Answer enabled

#6 Async - Max throughput set Sync - Slave Clocking unforced

#8 Command Mode forced

#9 Digital Loopback Off

#10 Dial-Up

#11 Async - AT/Multi-Tech Resp.

#12 Async/Sync mode set per requirements

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Image 148

Multi-Tech Systems BL-Series manual 25bis Set-Up and Initialization, 25bis DIP-Switches, 148

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 1 2834 Series Features Modem Features2 1932 Series Features 3 1432 Series Features Fax Features Technical Specifications Mode of Operation Intelligent FeaturesCommand Buffer Introduction and Description Fax Carrier Frequencies Lease Line RestoralCarrier Frequencies Carrier Frequencies 300 bps Bell Standard Connectors DiagnosticsIndicators Operating Temperature Modem LED Indicators PowerModels Only Controls on PC Board MultiModemBL User Guide Installation and Connection What is in Your Modem Package? Unpacking MT2834BL shown Safety Warnings InstallationInstallation Procedure MultiModemBL/BLI Connections Cabling Procedure MT1432BLK and MT2834BLK MultiModemBLK Connections Loading Trio DataFAX Software Installation and Connection Is Your Modem Ready for Use? 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 MultiModemBL User Guide Manual Dial and Automatic Answer Dialing/On-Line/Answering Manual Dial Backup Call Termination Dial Backup and Leased Line RestoralAutomatic Leased Line Restoral Operation Manual Dial and Automatic Answer Dial-Up Operation Manual Call Origination Automatic Answering Manual Answering Handshaking Details Abort TimerCall Termination 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 MultiModemBL User Guide Standard AT Result Codes Series Dialing Commands Dialing Action Commands Dial Command DContinuous Redial not used in BLI/BLK a or Dialing a Stored Number N Dial Modifier Commands Voice/Data Dialing $VDPulse or Tone Dial P T Set Pulse Dial Ratios &P Not used in BLK 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 BLI or BLK Models &G Bell/V.21 Tone Not Used in BLK Models B 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 Flow Control Commands Hardware Flow Control &E4Xon/Xoff Flow Control &E5 Modem-Initiated Flow Control 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 MultiModemBL 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 S19 Dial-Back TimerS16 Callback Attempts S17 Changing Break Time S26 Failed Password Attempts S29 Local Inactivity TimerS24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD S25 DTR Dropout Time S30 Inactivity Timer S32 Time Elapse for Escape SequenceS36 Time Between DTR Inactive and Modem Off-Hook S37 Time Between DTR Active and Modem On-Hook S48 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 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 MultiModemBL 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 MultiModemBL User Guide 106 DIP-Switch Settings PC Board BL models 108 DIP-Switch Settings DIP-Switch Option Settings109 1432 Series Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UP110 111 112 113 MultiModemBL User Guide Series Speaker Volume Control114 Switch Function Position Effect Recording Option Configurations115 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 $EBn #Fn$FCn $Fn $Hn L10#Ln $MBn NdNe $RnRFn Sr=n $SBn SFn$SPn #Tn +++ATCR #Xn137 Callback Security/Remote Configuration Command Summary 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 S24 S25S26 S29 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 MultiModemBL Cables Figure I-1. RS232 Cable IBM PC Appendix J RS-232C Interface Specifications Figure I-4. 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 160 EMC, Safety and Terminal Directive Compliance Compliance with European Community RequirementsEuropean Directives User Guide Statement Appendix K Regulatory Information New Zealand Telecom Warning Notice International Modem Restrictions162 FCC Regulations for Telephone Line Interconnection 163 Canadian Limitations Notice Class a StatementFCC Part Industry Canada Index 165 Functional Description of RS232C SIG 166 167 168 XON/XOFF