Multitech MT2834ZDX User Manual

FCC Part 15
This equipment has been tested and found to comply with the limits for
a Class B digital device, pursuant to Part 15 of the FCC Rules. These
limits are designed to provide reasonable protection against harmful
interference in a residential installation. This equipment generates, uses
and can radiate radio frequency energy and, if not installed and used in
accordance with the instructions, may cause harmful interference to radio
communications. However, there is no guarantee that interference will
not occur in a particular installation. If this equipment does cause harm-
ful interference to radio or television reception, which can be determined
by turning the equipment off and on, the user is encouraged to try to
correct the interference by one or more of the following measures:
• Reorient or relocate the receiving antenna.
• Increase the separation between the equipment and receiver.
• Plug the equipment into an outlet on a circuit different from that to
which the receiver is connected.
• Consult the dealer or an experienced radio/TV technician for help.
This device complies with Part 15 of the FCC rules. Operation is sub-
ject to the following conditions: (1) This device may not cause harmful
interference, and (2) this device must accept any interference that may
cause undesired operation.
WARNING: Changes or modifications to this unit not expressly ap-
proved by the party responsible for compliance could void the user’s
authority to operate the equipment.
Industry Canada
This Class B digital apparatus meets all requirements of the Canadian
Interference-Causing Equipment Regulations.
Cet appareil numerique de la classe B respecte toutes les exigences du
Reglement sur le materiel brouilleur du Canada.

Multitech MT2834ZDX Specifications

General

Model	MT2834ZDX
Category	Modem
Data Rate	56 Kbps
Interface	Serial
Product Type	External Modem
Power Supply	AC Adapter
Compression	V.42bis
Operating System Compatibility	Windows, Linux
Operating Modes	Data, Fax
Error Correction	V.42
Modulation	V.34

Summary

FCC Part 15 Compliance

Industry Canada Compliance

Meets Canadian Interference-Causing Equipment Regulations.

Chapter 2: Quick Start

Required Equipment Checklist

Chapter 4: AT Commands, S-Registers & Result Codes

AT Command Reference

Detailed list and explanation of modem AT commands.

S-Register Configuration

Description of S-registers for modem configuration and behavior.

Result Code Explanations

Meaning of various result codes sent by the modem.

Chapter 5: Solving Problems

No LEDs Light Up

Steps to diagnose why modem indicator lights are off.

Modem Not Responding

Solutions for when the modem does not accept commands.

Connection Failure

Diagnosing and resolving issues with establishing connections.

Online Disconnection Issues

Troubleshooting common reasons for unexpected disconnections.

Data Transfer Problems

Addressing slow transfers, data loss, or garbled characters.

Software and Program Conflicts

Step 1: Placing the Modem

Safety Warnings

Important warnings to ensure safe installation and operation.

Step 2: Connecting the Modem

MT2834ZDX Connections Diagram

Modem Connection Details

RS232 Connection

Instructions for connecting the modem via serial port.

LINE Connection

Instructions for connecting the modem to the telephone line.

PHONE Connection

Power and Status Checks

POWER Connection

Guide to connecting the modem to a power source.

Power-On Test Procedure

Step 3: Installing Modem in Windows

Adding the Modem to Windows

Steps to install the modem driver using the Windows wizard.

Windows Software Configuration

Removing Old Modem from Windows

Step 4: Installing Communications Software

Configuring Software for MT2834ZDX

Guide to reconfiguring or installing new communications software.

Step 5: Calling the Multi-Tech BBS

Using Windows HyperTerminal

Modem Connections

Connecting to the Computer (RS232)

Detailed instructions for the RS232 serial port connection.

Telephone and Phone Set Connections

Connecting to the Telephone Line (LINE)

How to connect the modem to the phone line jack.

Connecting a Telephone Set (PHONE)

Power and Surge Protection

Connecting to Power (POWER)

Guide for connecting the modem's power supply.

Surge Protectors and Lightning

Recommendations for protecting the modem from power surges.

AT Command Reference

Attention Code and Basic Commands

Details on AT attention code and basic commands like A/, A:.

Command Group: Answerback and Buffering

Answerback and Buffering Commands

Commands related to answerback and auto-reliable buffering.

Auto Speed Detection and Answer Tone

Commands for auto speed detection and answer tone settings.

Command Group: Baud Adjust and Carrier Detect

Baud Adjust and Cleardown Commands

Commands for baud rate adjustment and cleardown at disconnect.

Carrier Detect Control

Commands to control the Carrier Detect signal.

Command Group: Dialing and DTR Control

Dialing Commands

Commands for dialing and storing telephone numbers.

Data Terminal Ready (DTR) Control

Commands to manage the Data Terminal Ready signal.

Command Group: AT Command Control and Data Formatting

AT Command Control

Commands to enable or disable AT command response.

Line Probe Data Formatting

Command Group: Error Correction and Flow Control

V.42 Error Correction Modes

Settings for V.42 error correction modes.

Modem-Initiated Flow Control

Command Group: Data Compression and Error Correction

Data Compression Settings

Commands to enable or disable data compression.

V.42 Error Correction at 300 bps

Command Group: Escape Sequence and Configuration Loading

Escape Sequence Options

Load Default Configurations

Command Group: Fallback and Guard Tones

Fallback Modes When On Line

Guard Tones Control

Command Group: V.42 Mode and Speaker Control

V.42 Mode Selection

Modem Speaker Control

Command Group: Baud Rate and Number Linking

Modem Baud Rate Settings

Dial Stored Number and Linking

Command Group: Dialing and Result Codes

Pulse Dialing and Ratios

Result Codes Enable/Disable

Command Group: Reverse Modes and CTS Control

Reverse Originate/Answer Modes

Clear to Send (CTS) Control

Command Group: Rate Negotiation and Retransmit

Rate Negotiation and Line Probe

Retransmit Count and Register Setting

Command Group: Register Read and DSR Control

Read Register Value

Data Set Ready (DSR) Control

Command Group: Passwords and Modulation

Setup Password Commands

Trellis-Coded Modulation

Appendix A: Regulatory Compliance

FCC Part 68 Telecom Requirements

Canadian Limitations Notice

European Directives Compliance

EMC, Safety, and Terminal Directive Compliance

Appendix B: Technical Specifications

Modem and Fax Specifications

Details on data rates, compatibility, and formats.

Performance Features

Connectivity and Interfaces