About This Guide; How To Use This Guide I; Troubleshooting Tips - 3Com DIGITAL MODEM User Manual

Introduction
This guide describes how to install, operate, and
troubleshoot the 3Com
Modem, referred to throughout this guide as the 3Com
Impact digital modem.
If the information in the release notes shipped with your
product differs from the information in this guide, follow the
release notes. Be sure to read the README.TXT or Read Me
files on the applicable software utility diskette for the latest
product information.
How to Use This Guide
The following table shows where to find specific information
in this guide.
If you are looking for:
General information about the 3Com Impact digital modem
Instructions for installing and operating the digital modem
Simple digital modem troubleshooting tips
Instructions for using the AT command line set
Tabular summary of the AT command line set, registers,
and result codes
Information about 3Com's technical support
A
BOUT
T G
HIS UIDE
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Impact ISDN External Digital
Turn to:
Chapter 1
Chapter 2
Chapter 3
Appendix A
Appendix B
Appendix C