Table of Contents

Foreword........................................................................... i

Limited Warranty............................................................................................. i
Copyright 1996 by ZyXEL................................................................................. i
FCC Part 15 Information.................................................................................ii
FCC Requirements.......................................................................................... ii
Information for Canadian Users......................................................................iii
Telephone Company Requirements...................................................................iv

Chapter 1 - Introduction................................................1-1

How to Use this Manual.................................................................................1 -1
Unpacking Your Modem.................................................................................1-2
Becoming a Registered Owner.......................................................................1-3
Omni 288S Modem Features.......................................................................... 1-3

Chapter 2 - Installation..................................................2-1

Required Steps for Omni 288S Installation....................................................2 -1
Optional Steps for Omni 288S Installation.....................................................2-2
Driver and Software Installation....................................................................2 -3
Windows 95 Driver Installation......................................................................2-3
Windows 95 Dial-up Networking....................................................................2-5
Setup for DOS Fax/Modem Software...............................................................2-9

Chapter 3 - Basic Modem Operation.............................3-1

Understanding AT Commands........................................................................3 -1
Using the Windows 95 Hyper Terminal Program.............................................3-1
Dialing and Answering Techniques................................................................3-2
Dialing using the ATD Command...................................................................3-2
Auto-Answer and Hook Controls.....................................................................3-3
Making Your First Connection....................................................................... 3-3
Quick Tips when issuing AT Commands........................................................3-4
Modem Result Codes..................................................................................... 3-5
Viewing S Register Values.............................................................................3-5
Changing S Register Values...........................................................................3-6
Non-Volatile Memory.................................................................................... 3-6
Storing Phone Numbers.................................................................................3-6
Dialing Stored Phone Numbers......................................................................3-6
Saving Settings and User Profiles...................................................................3-7
Helpful Hints for PC Computers.................................................................... 3-7