Contents
User Guide
Record of Revisions Date Description
User Guide
Patents
Trademarks
Contents
Index 117
Registers
Introduction and Description
Introduction
How To Use This Manual
Modem Features
Fax Features
1 MT2834BA/BL Series Features
Technical Specifications
Power
MT2834BA LED Display
Modem LED Indicators
Controls on PC Board
Installation and Connection
Installation
What Is in Your Modem Package?
Safety Warnings
Installation Procedure
MultiModemBA Connections
Is Your Modem Ready for Use?
Installing PhoneTools, the Data Communications Software
Software Configuration and Modem Basics
Configuring Software for Your Modem
Configuring Your Software
Software Configuration
PC Initialization Strings
Configuring Software for Your Computer
Changing Default Parameters
Other Parameters
AT &F S0=0 &F9 &W0 CR
Simple Operations
Answer/Originate Voice/Data Toggle Switch
Modem Basics
Manual Dial and Automatic Answer
Manual Dial and Automatic Answer
Dialing/On-Line/Answering
Automatic Leased Line Restoral Operation
Manual Dial Backup Call Termination
Dial Backup and Leased Line Restoral
Manual Call Origination
Dial-Up Operation
Manual Answering
Automatic Answering
Call Termination
Abort Timer
Handshaking Details
Command Mode
Functional Modes
AT Command Editing
Command Mode
Functional Modes
Summary of AT Commands
Store Modem
Configure Data
Standard AT Result Codes
Result Codes
Multi-Tech Result Codes
Dialing Action Commands
Dialing Commands
Voice/Data Dialing $VD
Dial Modifier Commands
Pulse or Tone Dial P T
Set Pulse Dial Ratios &P
Reverse the Mode of Operation R
Return to Command Mode After Dial Command Execution
Automatic Pauses in Dialing
Long Space Disconnect Y
Quiet Answer @
Calling Card Detect Tones $
Storing Phone Numbers D...N
Phone Number Memory Commands
Number Linking NN
Listing Numbers Stored in Memory L
Modem Reset Z
Configuration and Default Storage Commands
Loading Factory Defaults &F
Synchronous Transmit Clock Select &X
Async/Sync Mode Switching &M
Unix Uucp Spoofing $SP
Echo Command Mode Characters E
Command Response Result Code Commands
Result 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
Enable/Disable Trelis Coded Modulation #T
Phone Line Conditioning Commands
Guard Tones Not Used in BAI/BLI Models &G
Bell/V.21 Tone
Enable/Disable Lowspeed Fast Connect $FC
Fallback Modes When On-Line #F
Cleardown at Disconnect &CD
Auto Speed Detect #A
Carrier Detect Control &C
7 RS-232C Interface Control Commands
Data Terminal Ready Control &D
CTS Control &R
DSR/CD Interaction Control &SF
Data Set Ready Control &S
CTS/RTS Interaction Control &RF
Normal Mode &E0
Error Correction Commands
Auto-Reliable Mode &E1
Reliable Mode &E2
Auto-Reliable Buffering $A
Mode Select #L
Retransmit Count $R
Enable/Disable Auto Reliable Fallback Character $F
Error Correction/300bps $E
Xon/Xoff Flow Control &E5
Flow Control Commands
Hardware Flow Control &E4
Hewlett-Packard ENQ/ACK Pacing &E9
Xon/Xoff Pass-Through &E7
Send Xon/Xoff Characters #X
Terminal/Computer Initiated Pacing &E13
Normal Mode Modem Flow Control On &E11
Maximum Block Size &BS
Parity Selection #P
Enq/Ack Pacing Commands
Normal/Auto-Reliable/Reliable Mode Commands
Xon/Xoff Pass-Through Commands
Modem Baud Rate $MB
Speed Conversion Commands
Speed Conversion $BA
Serial Port Baud Rate $SB
Immediate Action Commands
Off Hook H
Listing On-Line Diagnostics L8
Exiting Command Mode, Going Back On-Line O
Line Probe Commands
Force Answer Mode a
Registers
Rings Which Have Occurred
Number of Rings Until Modem Answers
Escape Code Character
Return Character
Line Feed Character
Time for Carrier Abort Timer
Backspace Character
Wait Time for Dial Tone
S13 Remote Configuration Escape Character
S10 Carrier Loss Disconnect Delay Time
Carrier Detect Response Time
S11 Tone Dialing Tone Spacing and Duration
S19 MT2834BL Only Dial-Back Timer
S15 Callback Time Delay
S16 Callback Attempts
S17 Changing Break Time
S29 Local Inactivity Timer
S26 Failed Password Attempts
S24 PBX/CBX Disconnect Drop Time for DSR/CTS/CD
S25 DTR Dropout Time
S32 Time Elapse for Escape Sequence
S30 Inactivity Timer
S36 Time Between DTR Inactive and Modem Off-Hook
S37 Time Between DTR Active and Modem On-Hook
S48 Program V.34bis Connect Speeds
Examples of Reading Values
Reading and Assigning S-Register Values
Examples of Assigning Values
AT Command and S-Register Summary
Callback Security and Remote Configuration
Callback Security and Remote Configuration
Callback Feature Description
To change your Remote Configuration feature status
Remote Configuration Description
AT#CBN0xxxxxxxxxxCR
To set parity of the password/message prompt
Callback Operational Sequence Procedures
Remote Configuration Operation Procedures
Remote Configuration Procedures
Remote Configuration and Callback Security AT Commands
Remote Configuration/Callback Security S-Registers
DIP-Switch Settings
MT2834BA PC Board
Dip-Switch Settings
DIP-Switch Option Settings
Switch #4 AS/400 Mode Synchronous Mode/Leased Line/Dial-UP
= Down
Down
Dip-Switch Settings
Speaker Volume Control
Switch Function Position Effect
Recording Option Configurations
DIP Switches #15-16 MT2834BL
DIP Switches #13-14
DIP Switches #15-16 MT2834BA
Warranty, Service and Tech Support
Warranty, Service, and Technical Support
Multi-Tech Systems, Inc. Warranty & Repairs Policies
Repair Procedures for International Distributors
Online Warranty Registration
Technical Support
Replacement Parts
Internet Sites
Country Telephone
Appendixes
Appendix a Upgrading Your Modem’s Firmware
Upgrade Overview
Appendix a Upgrading Your Modem’s Firmware
Download the Upgrade File
Upgrade the Modem’s Firmware
None of the LEDs Light When the Modem Is On
Appendix B Troubleshooting
Modem Does Not Respond to Commands
Appendix B Troubleshooting
Appendix B Troubleshooting
Modem Dials But Cannot Make a Connection
Modem Disconnects While On-line
Modem Cannot Connect When Answering
File Transfer Is Slower Than It Should Be
Am Losing Data
Am Getting Garbage Characters on the Monitor
Command Values Description
Appendix C AT Command Summary
Appendix C AT Command Summary
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 100
DsNd
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 101
$FCn MT2834BL
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 102
$MBn
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 103
$SBn
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 104
Dial Tone
Callback Security/Remote Configuration Command Summary
25bis Commands
Password Command Summary
Appendix D V.25bis Operation
Delayed and Forbidden Numbers
25bis Operation
Appendix D V.25bis Operation
25bis DIP-Switches
25bis Mode AT Commands
25bis Set-Up and Initialization
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 108
Enable/Disable V.25bis Mode $V Command
25bis AT Commands
Change Serial Baud Rate CSP Command
25bis Responses Result Codes
Listing Delayed Phone Numbers RLD Command
Dial Phone Number Provided CRN Command
Listing Forbidden Phone Number RLF Command
Disregard or Connect to Incoming Calls DIC or CIC Command
ITU V.25bis Country Specific Information
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 112
Appendix D V.25bis Operation Belgium
Singapore
Appendix E MultiModemBA/BL Cables
Appendix E MultiModemBA Cables
FCC Part
Appendix F Regulatory Information
FCC Part 68 Telecom
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 115
Canadian Limitations Notice
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 116
South African Notice
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 117
Index
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 118
91-116
Multi-Tech Systems, Inc. MT2834BA/BL Series User Guide 119
PBX/CBX Disconnect Drop Time for DSR/CTS/CD63