Document Outline

• Contents
  • Chapter 1 - Introduction
  • 1.1 Introduction
  • 1.2 Manual Organization
  • 1.3 Description
  • 1.4 FCC Regulations for Telephone Line Interconnection
  • 1.4.1 FCC Fax Update
  • 1.5 Canadian Limitations Notice
  • 1.6 Technical Specifications
  • 1.7 Power Supply
  • 1.8 Modem LED Indicators
  • 1.9 Busy Switch
  • 1.10 MT2834MR6 Installation Notes
  • 1.11 Safety Warnings
  • Chapter 2 - Dialing and Answering
  • 2.1 Introduction
  • 2.2 Dial-Up Automatic Answering
  • 2.3 Dial-Up Handshaking Details
  • 2.4 Call Termination
  • Chapter 3 - AT Commands
  • 3.1 Working with AT Commands
  • 3.1.1 Modes of Operation
  • 3.2.2 Command Structure
  • 3.3.3 Command Editing
  • 3.2 Dialing Commands
  • 3.3 Dial Modifier Commands
  • 3.4 Phone Number Memory Commands
  • 3.5 Configuration Storage and Recall Commands
  • 3.6 Modem Response (Result Code) Commands
  • 3.7 Online Connection Commands
  • 3.8 V.34 Commands
  • 3.9 RS-232 Interface Commands
  • 3.10 Error Correction and Data Compression Commands
  • 3.11 Speed Conversion Commands
  • 3.12 Immediate Action Commands
  • 3.12 Flow Control Commands
  • 3.13 Escape Sequences
  • 3.14 Remote Configuration Commands
  • 3.15 Line Probe Commands
  • 3.16 Diagnostic Commands
  • Chapter 4 - S-Registers
  • 4.1 Introduction
  • 4.2 S-Registers
  • 4.3 Reading and Assigning S-Register Values
  • 4.3.1 Examples of Assigning Values
  • 4.3.2 Examples of Reading Values
  • 4.4 AT Commands Affecting S-Registers
  • Chapter 5 - Error Correction, Data Compression & Speed Conversion
  • 5.1 Introduction
  • 5.2 How V.42 Detects and Corrects Errors
  • 5.3 Data Compression
  • 5.4 MNP Classes
  • 5.5 V.42 Mode Select Command (#L)
  • 5.5.1 #L0 Command
  • 5.5.1.1 Originate Mode
  • 5.5.1.2 Answer Mode
  • 5.5.2 #L1 Command
  • 5.5.3 #L2 Command
  • 5.5.4 #L3 Command
  • 5.6 Modes of Operation
  • 5.6.1 Non-Error Correction Mode (&E0)
  • 5.6.2 Reliable Mode (&E2)
  • 5.6.3 Autoreliable Mode (&E1)
  • 5.7 Flow Control
  • 5.8 Modem-Initiated Flow Control
  • 5.8.1 XON/XOFF Flow Control (&E5)
  • 5.8.2 Hardware Flow Control (&E4)
  • 5.9 Pacing (&E13)
  • 5.9.1 XON/XOFF Pass-Through (&E7)
  • 5.9.2 Non-Error Correction Mode Flow Control (&E10 and &E11)
  • 5.9.3 Hewlett Packard ENQ/ACK Pacing (&E9)
  • 5.10 Compression, Error Correction, Flow Control, and Pacing Commands
  • 5.10.1 V.42 Error Correction Modes
  • 5.10.2 Modem-Initiated Flow Control
  • 5.10.3 XON/XOFF Pass-Through
  • 5.10.4 Hewlett Packard ENQ/ACK Pacing
  • 5.10.5 Non-Error Correction Mode Flow Control
  • 5.10.6 Pacing (Computer-Initiated Flow Control)
  • 5.10.7 Data Compression
  • 5.11 Result Codes
  • 5.11.1 MNP Error Correction
  • 5.11.2 LAP-M Error Correction
  • 5.11.3 Data Compression
  • 5.12 Speed Conversion
  • 5.12.1 Baud Adjust ($BA)
  • 5.12.2 Modem Baud Rate ($MB)
  • 5.12.3 Serial Port Baud Rate ($SB)
  • 5.13 Related Commands
  • 5.13.1 Autoreliable Buffering ($A)
  • 5.13.2 Maximum Block Size (&BS)
  • 5.13.3 Autoreliable Fallback Character ($F)
  • 5.13.4 Retransmit Count ($R)
  • 5.13.5 V.42 Error Correction at 300 bps ($E)
  • 5.14 Summary
  • Chapter 6 - Testing & Troubleshooting
  • 6.1 Introduction
  • 6.2 Local Analog Loopback Test (V.54 Loop 3)
  • 6.2.1 Test Procedure
  • 6.3 Remote Digital Loopback Test (V.54 Loop 2)
  • 6.3.1 Test Procedure
  • 6.4 Local Digital Loopback Test (V.54 Loop 2)
  • 6.4.1 Test Procedure
  • Chapter 7 - Warranty & Service
  • 7.1 Multi-Tech Systems, Inc. Warranty & Repairs Policies
  • 7.1.1 Warranty
  • 7.1.2 U.S. and Canadian Customers
  • 7.1.3 International Customers (outside U.S.A. and Canada)
  • 7.1.4 International Distributors
  • 7.2 Repairs
  • 7.2.1 Repair Procedures for U.S. and Canadian Customers
  • 7.2.2 Repair Procedures for International Customers
  • 7.2.3 Repair Procedures for International Distributors
  • 7.2.4 Replacement Parts
  • 7.3 Technical Support
  • 7.4 Internet Site
  • Appendices
  • Appendix A
  • ASCII Conversion Chart
  • Appendix B
  • Dial Pulses
  • Tone Dial Frequencies
  • Appendix C
  • Result Code Summary
  • Appendix D
  • S-Register Summary
  • Appendix E
  • AT Command Summary
  • Appendix F
  • RS-232C Interface Specifications
  • Functional Description of the RS-232C Signals
  • Transmitted Data (TD) - Pin 2
  • Received Data (RD) - Pin 3
  • Request To Send (RTS) - Pin 4
  • Clear To Send (CTS) - Pin 5
  • Data Set Ready (DSR) - Pin 6
  • Signal Ground (SG) - Pin 7
  • Carrier Detect (CD) - Pin 8
  • Test Voltage (+V) - Pin 9
  • High Speed (HS) - Pin 12
  • Transmit Clock (TC) - Pin 15
  • Receive Clock (RC) - Pin 17
  • Data Terminal Ready (DTR) - Pin 20
  • Ring Indicator (RI) - Pin 22
  • External Transmit Clock (XTC) - Pin 24
  • Terminal Busy (OOS) - Pin 25
  • Appendix G
  • Cable and Connector Diagrams
  • APPENDIX H
  • Introduction to MultiTech Escape Methods
  • How to Select an Escape Method
  • Escape Method 1: +++AT<CR>
  • Escape Method 2: <BREAK>AT<CR>
  • S-Registers and Escape Sequence
  • Aborting an Escape Sequence
  • APPENDIX I
  • Introduction to Remote Configuration
  • Basic Procedure
  • Setup
  • Changing the Passwords
  • Changing the Remote Escape Character
  • Index