ZyXEL Communications Omni 56K User manual

User's Guide for
ZyXEL Omni 56K and
Omni 56K Plus Modems
ZyXEL
TOTAL INTERNET ACCESS SOLUTIONS ZyXEL Communications Corporation

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
iii
ZyXEL Omni 56K Modem
ZyXEL Omni 56K Plus Modem
Trademarks: Product and corporate names mentioned in this publication are used for identification purposes
only and may be properties of their respective owners.
All rights reserved. The contents of this publication may not be reproduced in any part or as a whole,
transcribed, stored in a retrieval system, translated into any language, or transmitted in any form or by any
means, electronic, mechanical, magnetic, optical, chemical, photocopying, guide, or otherwise, without the
prior written permission of ZyXEL Communications Corporation.
Published by ZyXEL Communications Corporation. All rights reserved.
Disclaimer: ZyXEL does not assume any liability arising out of the application or use of any products, or
software described herein. Neither does it convey any license under its patent rights nor the patents rights of
others. ZyXEL further reserves the right to make changes in any products described herein without notice.
This publication is subject to change without notice.
Copyright © 1999 by ZyXEL Communications Corporation.

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
iv
Limited Warranty
ZyXEL Omni 56K and Omni 56K Plus Modems
Conditions of ZyXEL Limited Warranty:
ZyXEL warrants to the original end user (purchaser) that this product is free from any defects in materials or
workmanship for a period of up to two (2) years from the date of purchase. During the warranty period, and
upon proof of purchase, should the product have indications of failure due to faulty workmanship and/or
materials, ZyXEL will, at its discretion, repair or replace the defective products or components without charge
for either parts or labor, and to whatever extent it shall deem necessary to restore the product or components to
proper operating condition. Any replacement will consist of a new or re-manufactured functionally equivalent
product of equal value, and will be solely at the discretion of ZyXEL. This warranty shall not apply if the
product is modified, misused, tampered with, damaged by an act of God, or subjected to abnormal working
conditions.
Limitations and exclusions of this warranty:
Repair or replacement, as provided under this warranty, is the exclusive remedy of the purchaser. This
warranty is in lieu of all other warranties, express or implied, including any implied warranty of
merchantability or fitness for a particular use or purpose.
Limitations of liability:
ZyXEL shall in no event be held liable for indirect or consequential damages of any kind of character to the
purchaser.
How to obtain warranty service:
To obtain the services of this warranty, contact ZyXEL's Service Center; refer to the separate Warranty Card
for your Return Material Authorization number (RMA). Products must be returned Postage Prepaid. It is
recommended that the unit be insured when shipped. Any returned products without proof of purchase or
those with an out-dated warranty will be repaired or replaced (at the discretion of ZyXEL) and the customer
will be billed for parts and labor. All repaired or replaced products will be shipped by ZyXEL to the
corresponding return address, Postage Paid (USA and territories only). If the customer desires some other
return destination beyond the U.S. borders, the customer shall bear the cost of the return shipment. This
warranty gives you specific legal rights, and you may also have other rights that vary from state to state.
Become a Registered Owner
Complete the pre-addressed registration card and place it in the mail. Registered owners will receive future
product information and update announcement. Save your dated invoice as proof of purchase.

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
v
Contents
LIMITED WARRANTY......................................................................................................................IV
PREFACE.........................................................................................................................................XI
About ZyXEL Omni 56K/Omni 56K Plus..................................................................................xi
How to Use This Guide............................................................................................................xi
Other Reference ......................................................................................................................xi
CHAPTER 1 INTRODUCTION....................................................................................................... 1-1
Main Features....................................................................................................................... 1-1
CHAPTER 2 INSTALLING ZYXEL OMNI 56K/OMNI 56K PLUS.................................................. 2-1
Panel Description.................................................................................................................. 2-1
Front Panel LEDs ......................................................................................................... 2-1
Back Panel Switches.................................................................................................... 2-3
Connecting Your Omni 56K/Omni 56K Plus ......................................................................... 2-4
Getting Started...................................................................................................................... 2-5
CHAPTER 3 SPECIFICATIONS & FUNCTION DESCRIPTION................................................... 3-1
Specifications........................................................................................................................ 3-1
Hardware Specification................................................................................................. 3-1
Firmware Specification ................................................................................................. 3-2
Protocol Support................................................................................................................... 3-3
Omni 56K/Omni 56K Plus Capability.................................................................................... 3-3
Data Function ............................................................................................................... 3-4
Security Function........................................................................................................ 3-10
Fax function................................................................................................................ 3-12
Voice Function............................................................................................................ 3-13

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
vi
CHAPTER 4 RESULT CODES.......................................................................................................4-1
Result Codes.........................................................................................................................4-1
CHAPTER 5 COMMAND SETS.....................................................................................................5-1
Data command sets..............................................................................................................5-1
Basic AT Command Sets..............................................................................................5-1
Extended AT& Command Sets.....................................................................................5-4
Extended AT* Command Sets......................................................................................5-8
Extended AT# Command Sets ...................................................................................5-10
Fax command sets.............................................................................................................. 5-11
Service Class 1 Commands........................................................................................ 5-11
Service Class 2.0 Commands.....................................................................................5-12
Voice AT Commands ..................................................................................................5-15
Voice Shielded DTE Commands ................................................................................5-16
Voice Shielded DTE Responses.................................................................................5-17
Basic S-Registers "ATSn=x".......................................................................................5-18
CHAPTER 6 FIRMWARE UPGRADE............................................................................................6-1
Upgrading by Software..................................................................................................6-1
Upgrading by Terminal Program...................................................................................6-3
INDEX ................................................................................................................................................1

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
vii
Content of Tables
Table 1. Front Panel LEDs for Omni 56K Plus ..................................................... 2-1
Table 2. Front Panel LEDs for Omni 56K............................................................. 2-2
Table 3. Back Panel Description........................................................................... 2-3
Table 4. Hardware Specifications......................................................................... 3-1
Table 5. Firmware Specifications.......................................................................... 3-2
Table 6. Feature Description................................................................................. 3-4
Table 7. Physical Layer Capacity.......................................................................... 3-5
Table 8. Different Ring Types in Register S40.................................................... 3-10
Table 9. Fax Physical Layer Capacity................................................................. 3-12
Table 10. Result Codes .......................................................................................... 4-3
Table 11. Basic AT Command Sets........................................................................ 5-1
Table 12. AT Command Sets Requiring an "AT" Prefix.......................................... 5-3
Table 13. Extended AT& Command Sets............................................................... 5-7
Table 14. Extended AT* Command Sets................................................................ 5-9
Table 15. Extended AT# Command Sets ............................................................. 5-10
Table 16. Service Class 1 Commands ..................................................................5-11
Table 17. The Value of <MOD> Parameters..........................................................5-11
Table 18. Service Class 2.0 Commands............................................................... 5-15
Table 19. Voice AT Commands............................................................................ 5-16
Table 20. Voice Shielded DTE Commands .......................................................... 5-17
Table 21. Voice Shielded DTE Responses........................................................... 5-17
Table 22. Basic S-Registers "ATSn=x"................................................................. 5-18
Table 23. Extended S-Registers "ATSn=x"........................................................... 5-25

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
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Content of Figures
Figure 1. Back Panel Switches .............................................................................. 2-3
Figure 2. Back Panel Connections......................................................................... 2-4

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
xi
Preface
Thank you for purchasing ZyXEL Omni 56K/Omni 56K Plus modem.
About ZyXEL Omni 56K/Omni 56K Plus
The Omni 56K/Omni 56K Plus is an analog Data/Fax /Voice modem used for Internet access via
PSTN line. It supports not only RS-232 com port interface but also Universal Serial Bus (USB)
connection to PC. Users can plug and play USB cables without turning off the computer which
makes it simple to install the modem. It can run upstream maximum rate at 33.6kbps and
downstream rate at 56Kbps. The rate selection depends on the line quality, and server side
configuration.
How to Use This Guide
This Guide is cataloged into 5 chapters. The first two chapters provide general information for
ZyXEL Omni 56K/Omni 56K Plus modem, and the next three chapters provide advanced
information for technical users who might need them for programming or other applications.
Other Reference
To quickly learn how to install and configure your Omni 56K/Omni 56K Plus modem, please refer
to the ZyXEL Omni 56K/Omni 56K Plus Modem Read Me First.

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
1-1
Chapter 1
Introduction
This chapter introduces you to the features and specifications for the ZyXEL Omni 56K/Omni 56K
Plus modem, and provides instructions for installing your modem.
Main Features
nZyXEL forth generation data pump with V.90 capability.
nUSB technology for easy installation.
nV.90 56K down-stream data transmission
nFast retrain with auto fall-forward and fall-back.
nG3 14.4Kbps Fax send/receive.
nSupport Fax class 1 and class 2.0 command set.
nHandset voice record and play. (Omni 56K Plus only)
nVoice digitization and compression.
nVoice record via IS101 Command Set
nError correction & data compression.
nMicrosoft 95/98 Windows plug and play compatible.
nFlash EPROM upgradeable.

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
2-1
Chapter 2
Installing ZyXEL Omni 56K/Omni 56K Plus
Panel Description
Front Panel LEDs
The description of front panel LEDs lists as below:
Front Panel LEDs for Omni 56K Plus
LED Function Description
USB USB indication ON: USB link is up and in use
OFF: USB link is down or stays in RS-232 mode
OH Hook Status ON: off hook
OFF: on hook
DATA Data Traffic ON: data transmission
OFF: no data
MR Modem Ready ON: modem is ready
OFF: modem is not ready
Table 1. Front Panel LEDs for Omni 56K Plus

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
2-2
Front Panel LEDs for Omni 56K
LED Function description
V.90 V.90 mode ON: connection V.90 mode
OFF: none V.90 mode
OH Hook Status ON: off hook
OFF: on hook
DATA Data
transmission ON: data transmission
OFF: no data
MR Modem Ready ON: modem is ready
OFF: modem is not ready
Table 2. Front Panel LEDs for Omni 56K

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
2-3
Back Panel Switches
Figure 1. Back Panel
Switch Description
ON/OFF
Power ON/OFF switch
AC IN
9V-AC power input socket to connect the AC power adapter.
RS-232
Serial port DB-9 female connector to plug the RS-232 cable and
connect to the serial port of a DTE or computer.
USB Universal series bus connector that connects to any one of your
devices with USB port, such as your computer or USB hub. (Omni 56K
Plus only)
LINE
Analog port RJ-11 terminal jack for connecting to wall jack.
PHONE
Analog port RJ-11 terminal jack for connecting to your phone
set.
Table 3. Back Panel Description
Phone
AC IN Line
ON/OFF RS-232
USB
For Omni 56K Plus only.

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
2-4
Connecting Your Omni 56K/Omni 56K Plus
For connecting your Omni 56K/Omni 56K Plus modem, please refer the following figure:
Figure 2. Back Panel Connections
USB Connector (For Omni 56K Plus Users)
The Omni 56K Plus is an USB(Universal Serial Bus)-based modem, providing a USB
connector on the back panel of the device.
Power
Outlet Power
Adapter Tel
RS-232
port
Computer
USB port
Wall Jack
Phone
AC IN Line
ON/OFF RS-232
USB
For Omni 56K Plus only.

User's Guide for ZyXEL Omni 56K and Omni 56K Plus Modems
2-5
Getting Started
For Omni 56K Plus users, you can make connection either via USB or via RS-232; for Omni 56K
users, you can only use RS-232 to connect your modem to your PC.
For Omni 56K Plus users, when you plug the USB connector attached with your Omni 56K Plus to
the USB series port of your PC, the Plug and Play function of the operating system will first detect
if its driver has been installed. If not, Windows will prompt you for the USB device driver.
For more information on connecting and starting your modem, please refer to ZyXEL Omni
56K/Omni 56K Plus Modem Read Me First that is attached with your product package.