Multitech MT1432BA, MT2834BA, MT2834BAI

Chapter 5 - Command Mode

1432 Series:

AT$MB75 = CCITT V.23

AT$MB300 = 300 bps

AT$MB1200 = 1200 bps

AT$MB2400 = 2400 bps

AT$MB4800 = 4800 bps

AT$MB9600 = 9600 bps

AT$MB14400 = 14400 bps

The factory default is 14400 bps.

932 Series:

AT$MB75 = CCITT V.23

AT$MB300 = 300 bps

AT$MB1200 = 1200 bps

AT$MB2400 = 2400 bps

AT$MB4800 = 4800 bps

AT$MB9600 = 9600 bps

The factory default is 9600 bps.

Contents

Main User Guide Contents Chapter 1 - Introduction and Description Chapter 2 - Installation and Connection Chapter 3 - Software Configuration and Modem Basics Chapter 4 - Manual Dial and Automatic Answer Chapter 5 - Command Mode Chapter 6 - S-Registers Chapter 7 - Callback Security and Remote Configuration Chapter 8 - Modem Testing Chapter 9 - DIP-Switch Settings Chapter 10 - Warranty, Service and Tech Support Appendixes Index Page Page 1.1 Introduction 1.2 How To Use This Manual Chapter 1 - Introduction and Description Chapter 2 - Installation and Connection Chapter 3 - Software Configuration and Modem Basics Chapter 5 - AT Command Mode Operation Chapter 6 - S-Registers Chapter 7 - Callback and Remote Configuration Chapter 8 - Testing Your Modem Chapter 9 - DIP-Switches 1.3 Modem Features 1.3.1 2834 Series Features 1.3.2 1432 Series Features 1.3.3 932 Series Features Page 1.5 Technical Specifications Page Page Page 1.6 Power 1.7 Modem LED Indicators 1.8 Controls on PC Board Page Page 2.1 What is in Your Modem Package? 2.2 Installation 2.2.1 Safety Warnings 2.2.2 Installation Procedure Page 2.3 Loading Trio DataFAX Software Page 2.4 Is Your Modem Ready for Use? Page Page 3.1 Introduction 3.2 Serial Port Limitations 3.2.1 How Can You Identify Your UART T ype? 3.2.2 The 16550 UART and Windows 3.1 3.3 Configuring Your Software 3.3.1 Configuring Software for Your Modem 3.4 PC Initialization Strings 3.4.1 Changing Default Parameters 3.4.2 Other Parameters 3.5 Macintosh Initialization 3.6 Configuring Software for Your Computer 3.6.1 Configuring Software for the Remote System 3.6.2 Terminal Emulation 3.6.3 File Transfer Protocols 3.7 When to Disable Data Compression 3.7.1 Disabling Error Correction 3.8 Modem Basics 3.8.1 Simple Operations 3.9 The Answer/Originate - Voice/Data Toggle Switch Page Page 4.1 Introduction 4.2 Dialing/On-Line/Answering 4.3 Manual Call Origination 4.4 Automatic Answering 4.5 Manual Answering 4.6 Handshaking Details 4.7 Call Termination Page Page 5.1 Introduction 5.1.1 AT Command Editing 5.1.2 Functional Modes 5.2 Summary of AT Commands Page Page 5.3 Result Codes Page 5.4 Dialing Commands 5.4.1 Dialing Action Commands Dial Command D Continuous Redial (not used in BAI) A: or : Dialing a Stored Number N DTR Dialing $D 5.4.2 Dial Modifier Commands Pulse or Tone Dial P T Set Pulse Dial Ratios &P Automatic Pauses in Dialing , Long Space Disconnect Y Wait for New Dial-Tone W Return to Command Mode After Dial Command Execution ; Reverse the Mode of Operation R ATDT 1028806127853500 $ Quiet Answer @ 5.4.3 Phone Number Memory Commands Storing Phone Numbers D...N Number Linking NN Listing Numbers Stored in Memory L 5.4.4 Configuration and Default Storage Commands Store Configuration & S-Register Parameters in Non-Volatile Memory &W Loading Factory Defaults &F Modem Reset Z Unix UUCP Spoofing $SP Async/Sync Mode Switching &M Synchronous Transmit Clock Select &X 5.4.5 Command Response (Result Code) Commands Echo Command Mode Characters E Result Codes Enable/Disable and No Response Answer Q Result Codes ("Multi-Tech" or "Standard AT") &Q Result Codes (Verbose/Terse) V Result Codes (Basic and Extended) and Call Progress Selection X 5.4.6 Phone Line Conditioning Commands Guard Tones (Not Used in BAI Models) &G Bell/V.21 Tone B Phone Line Monitoring Speaker M Enable or Disable Recognition of Remote Digital Loop Signal &T Fallback Modes When On-Line #F Enable/Disable Lowspeed Fast Connect $FC (2834 Series only) Cleardown at Disconnect &CD (2834 Series only) Auto Speed Detect #A 5.4.7 RS-232C Interface Control Commands Carrier Detect Control &C Data Terminal Ready Control &D CTS Control &R Data Set Ready Control &S CTS/RTS Interaction Control &RF DSR/CD Interaction Control &SF 5.4.8 Error Correction Commands Normal Mode &E0 Auto-Reliable Mode &E1 Reliable Mode &E2 V.42 Mode Select #L Auto-Reliable Buffering $A Enable/Disable Auto Reliable Fallback Character $F Retransmit Count $R V.42 Error Correction/300bps $E 5.4.9 Flow Control Commands Hardware Flow Control &E4 Xon/Xoff Flow Control &E5 Xon/Xoff Pass-Through &E7 Send Xon/Xoff Characters #X Hewlett-Packard ENQ/ACK Pacing &E9 Normal Mode Modem Flow Control On &E11 Terminal/Computer Initiated Pacing &E13 Maximum Block Size &BS Parity Selection #P 5.4.10 Compression, Error Correction, Flow Control, Pass- Through and Pacing Commands 5.4.11 Speed Conversion Commands Speed Conversion $BA Modem Baud Rate $MB Page Serial Port Baud Rate $SB 5.4.12 Immediate Action Commands Help Screens $H Inquiry for Product Code I Windows 95 Autodetect Inquiry I9 (2834 Series only) Listing Current Operating Parameters L5 L7 Listing On-Line Diagnostics L8 Off Hook H Escape Sequences- Entering Command Mode While Still On-Line +++AT<CR> BREAK AT<CR> Escape Sequence Options - Entering Command Mode While On-Line %E 5.4.13 Line Probe Commands (2834 Series only) Page Page 6.1 Introduction S0 Number of Rings Until Modem Answers S1 Rings Which Have Occurred S2 Escape Code Character S3 Return Character Page Page Page Page Page 6.2 Reading and Assigning S-Register Values 6.2.1 Examples of Assigning Values 6.2.2 Examples of Reading Values 6.3 AT Command and S-Register Summary Page Page 7.1 Introduction 7.2 Callback Feature Description 7.3 Remote Configuration Description 7.3.1 Initial Setup Procedures for Callback and Remote Configuration. Page Page 7.3.2 Remote Configuration Procedures 7.4 Remote Configuration and Callback Security AT Commands Assign Passwords for Callback Phone Numbers #CBN Callback Security Enable/Disable #DB Change LOGIN Password #I Change SETUP Password #S Page 7.5 Remote Configuration/Callback Security S-Registers Remote Configuration Character (S13) Callback Time Delay (S15) Callback Attempts (S16) Failed Password Attempts (S26) Page Page 8.1 Introduction 8.2 Local Analog Loopback Test/V.54 Loop 3 8.3 Digital Loopback Test/V.54 Loop 2 (Local/Manual) 8.4 Digital Loopback Test/V.54 Loop 2 (Remote/Automatic) 8.5 Back-to-Back Test 8.6 Synchronous Mode Testing 8.7 Local Analog Loopback Test (Synchronous Mode) 8.8 Digital Loopback Test (Local/Manual) (Synchronous Mode) 8.9 Digital Loopback Test (Remote/Automatic) (Synchronous Mode) Page Page 9.1 Introduction 9.2 DIP-Switch Option Settings Page Page Page Page Page 9.3 Speaker Volume Control 9.4 Recording Option Configurations DIP-Switches DIP Switches #13-14 DIP Switches #15-16 Page 10.1 Introduction 10.2 Limited Warranty 10.2.1 On-line Warranty Registration 10.3 Tech Support 10.3.1 Recording Modem Information 10.4 Service 10.5 The Multi-Tech BBS To log on to the Multi-Tech BBS To Download a file 10.5.2 Upgrading the MultiModem 10.5.3 Using FlashPro to Upgrade Modem Firmware 10.6 About Multi-Techs Internet Presence 10.7 About the Multi-Tech Fax-Back Service 10.8 About Ordering Accessories Page Appendix A - Troubleshooting None of the LEDs Light When the Modem Is On The Modem Does Not Respond to Commands Page The Modem Dials But Cannot Make a Connection The Modem Disconnects While On-line The Modem Cannot Connect When Answering File Transfer Is Slower Than It Should Be I Am Losing Data I Am Getting Garbage Characters on the Monitor My Fax and Communications Software Wont Run at the Same Time Appendix B - ASCII Character Code/Hex/Decimal Conversion Chart Page Appendix D - Command Summary Page Page Page Page Page Page Callback Security/Remote Configuration Command Summary Password Command Summary V.25bis Commands Appendix E - DIP-Switch Summary Asynchronous Mode Synchronous Mode DIP Switches #13-14 DIP Switches #15-16 Appendix F - S-Register Summary Page Appendix G - Result Code Summary Page Appendix H - V.25bis Operation Delayed and Forbidden Numbers V.25bis Operation V.25bis Set-Up and Initialization V.25bis Mode AT Commands V.25bis Responses (Result Codes) V.25bis AT Commands Enable/Disable V.25bis Mode ($V) Command Change Serial Baud Rate (CSP) Command Dial Phone Number Provided (CRN) Command Listing Delayed Phone Numbers (RLD) Command Listing Forbidden Phone Number (RLF) Command Disregard or Connect to Incoming Calls (DIC or CIC) Command DTR Dialing ($D) Command ITU V.25bis Country Specific Information Page 154 MultiModemBA User Guide Figure I-3. Two Wire Leased Line Connection Appendix I - MultiModemBA Cables These cables connect your modem to your terminal or computers serial port. 25-PIN DTE Connector 25-PIN DCE Device Figure I-1. RS232 Cable (IBM PC) Page Appendix J - RS-232C Interface Specifications Page Test Voltage - Pin 9, XV Transmit Clock - Pin 15, TC (DB) Receive Clock - Pin 17, RC (DD) Data Terminal Ready - Pin 20, TR or DTR (CD) Ring Indicator - Pin 22, RI (CE) Page Appendix K - Regulatory Information Compliance with European Community Requirements EMC, Safety and Terminal Directive Compliance European Directives User Guide Statement International Modem Restrictions New Zealand Telecom Warning Notice FCC Regulations for Telephone Line Interconnection Canadian Limitations Notice Class A Statement Index Symbols A B C E F G H I N O P Q R U V W X Y