ZyXEL Communications Omni 56K II User manual

Omni 56K II and Omni 56K
Plus II
Voice/Fax/Data Modem
User's Guide
Version 1.0
August 2002

Omni 56K II and Omni 56K Plus II User’s Guide
ii Copyright
Copyright
Copyright (c) 2002 by ZyXEL Communications Corporation.
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, manual, 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 patent 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.
Trademarks
ZyNOS (ZyXEL Network Operating System) is a registered trademark of ZyXEL Communications, Inc.
Other trademarks mentioned in this publication are used for identification purposes only and may be
properties of their respective owners.

Omni 56K II and Omni 56K Plus II User’s Guide
Warranty iii
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 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.
Note
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. ZyXEL shall in no event be held liable for indirect
or consequential damages of any kind of character to the purchaser.
To obtain the services of this warranty, contact ZyXEL's Service Center 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. This warranty gives you specific legal rights, and you may also have other rights that vary from country
to country.
Online Registration
Don't forget to register your ZyXEL product (fast, easy online registration at www.zyxel.com) for free future
product updates and information.

Omni 56K II and Omni 56K Plus II User’s Guide
iv Customer Support
Customer Support
Please have the following information ready when you contact customer support.
• Product model and serial number.
• Warranty Information.
• Date that you received your device.
• Brief description of the problem and the steps you took to solve it.
METHOD
LOCATION
E-MAIL
SUPPORT/SALES
TELEPHONE/FAX WEB SITE/ FTP SITE REGULAR MAIL
[email protected]
[email protected]
[phone] www.zyxel.com
www.europe.zyxel.com
WORLDWIDE
[email protected] [phone] ftp.europe.zyxel.com
ZyXEL Communications Corp.,
6 Innovation Road II, Science-
Based Industrial Park, Hsinchu,
300, Taiwan
[email protected] [phone]
800-255-4101
www.zyxel.comNORTH
AMERICA
[email protected] [phone] ftp.zyxel.com
ZyXEL Communications Inc.,
1650 Miraloma Avenue,
Placentia, CA 92870, U.S.A.
[email protected] [phone] www.zyxel.dkSCANDINAVIA
[email protected] [phone] ftp.zyxel.dk
ZyXEL Communications A/S,
Columbusvej 5, 2860 Soeborg,
Denmark
[email protected] [phone] www.zyxel.deGERMANY
[email protected] [phone]
ZyXEL Deutschland GmbH.
Adenauerstr. 20/A4 D-52146
Wuerselen, Germany
[email protected] [phone] www.zyxel.com.myMALAYSIA
[email protected] [phone]
Lot B2-06, PJ Industrial Park,
Section 13, Jalan Kemajuan,
46200 Petaling Jaya Selangor
Darul Ehasn, Malaysia

Omni 56K II and Omni 56K Plus II User’s Guide
Table of Contents v
Table of Contents
Copyright ...........................................................................................................................................................ii
ZyXEL Limited Warranty................................................................................................................................ iii
Customer Support .............................................................................................................................................iv
List of Figures ................................................................................................................................................ viii
List of Tables ....................................................................................................................................................ix
Preface ..............................................................................................................................................................xi
About This User's Guide ...............................................................................................................................xi
Related Documentation.................................................................................................................................xi
Syntax Conventions ......................................................................................................................................xi
Chapter 1 Getting To Know Your Modem .................................................................................................... 1-1
1.1 The Omni 56K II and Omni 56K Plus II Modem .......................................................................... 1-1
1.2 Features of the Omni 56K II and Omni 56K Plus II Modem ......................................................... 1-1
Chapter 2 Installation ..................................................................................................................................... 2-1
2.1 Panel Descriptions.......................................................................................................................... 2-1
2.2 Connecting Your Omni 56K II (RS-232 Port) ............................................................................... 2-3
2.3 Connecting Your Omni 56K Plus II (USB Port)............................................................................ 2-7
2.4 TCP/IP Setup................................................................................................................................ 2-10
2.5 Dial-Up Networking..................................................................................................................... 2-11
2.6 Installing Bitware From the Included CD .................................................................................... 2-11
Chapter 3 Specifications & Functions............................................................................................................ 3-1
3.1 Specifications ................................................................................................................................. 3-1
3.2 Hardware Specification.................................................................................................................. 3-1
3.3 Firmware Specification .................................................................................................................. 3-1
3.4 Protocol Support ............................................................................................................................ 3-2

Omni 56K II and Omni 56K Plus II User’s Guide
vi Table of Contents
3.5 Omni 56K II and Omni 56K Plus II Capability ..............................................................................3-4
3.6 Data Function..................................................................................................................................3-4
3.7 Flow Control...................................................................................................................................3-5
3.8 Hardware CTS/RTS Flow Control..................................................................................................3-5
3.9 Software XON/XOFF Flow Control...............................................................................................3-6
3.10 Error Control...................................................................................................................................3-6
3.11 Data Compression...........................................................................................................................3-6
3.12 Repeat Dial .....................................................................................................................................3-6
3.13 Cyclic Dial ......................................................................................................................................3-6
3.14 Caller Number Delivery (Caller ID) ...............................................................................................3-7
3.15 Distinctive Ring ..............................................................................................................................3-9
3.16 Security Function..........................................................................................................................3-10
3.17 Fax function ..................................................................................................................................3-12
3.18 Voice Function..............................................................................................................................3-12
Chapter 4 Result Codes...................................................................................................................................4-1
4.1 Result Codes ...................................................................................................................................4-1
Chapter 5 Command Sets ...............................................................................................................................5-1
5.1 Data command sets .........................................................................................................................5-1
5.2 Fax command sets.........................................................................................................................5-11
5.3 Voice AT Commands ...................................................................................................................5-22
5.4 Voice Shielded DTE Commands ..................................................................................................5-24
5.5 Voice Shielded DTE Responses ...................................................................................................5-24
5.6 S-Register Descriptions ................................................................................................................5-25
Chapter 6 Firmware Upgrade .........................................................................................................................6-1
6.1 Upgrading by Software...................................................................................................................6-1
6.2 Upgrading by Terminal Program ....................................................................................................6-1
Chapter 7 Troubleshooting .............................................................................................................................7-1

Omni 56K II and Omni 56K Plus II User’s Guide
Table of Contents vii
Index .................................................................................................................................................................A

Omni 56K II and Omni 56K Plus II User’s Guide
viii List of Figures
List of Figures
Figure 2-1 Omni 56K Plus II Rear Panel and Connections ............................................................................2-2
Figure 2-2 Windows 98 Add New Hardware Wizard.....................................................................................2-4
Figure 2-3 Windows Me Add New Hardware Wizard ...................................................................................2-5
Figure 2-4 Windows 2000 Found New Hardware Wizard .............................................................................2-5
Figure 2-5 Windows XP Hardware Update Wizard .......................................................................................2-6
Figure 2-6 Windows 98 Add New Hardware Wizard.....................................................................................2-7
Figure 2-7 Windows Me Add New Hardware Wizard ...................................................................................2-8
Figure 2-8 Windows 2000 Upgrade Device Driver Wizard ...........................................................................2-8
Figure 2-9 Windows XP Hardware Update Wizard .......................................................................................2-9
Figure 2-10 Bitware Master Setup................................................................................................................2-11

Omni 56K II and Omni 56K Plus II User’s Guide
List of Tables ix
List of Tables
Table 2-1 Front Panel LEDS For Omni 56K Plus II...................................................................................... 2-1
Table 2-2 Front Panel LEDs for Omni 56K II ............................................................................................... 2-1
Table 2-3 Back Panel Description.................................................................................................................. 2-2
Table 3-1 Hardware Specifications................................................................................................................ 3-1
Table 3-2 Firmware Specifications ................................................................................................................ 3-1
Table 3-3 Feature Description........................................................................................................................ 3-4
Table 3-4 Physical Layer Capacity ................................................................................................................ 3-4
Table 3-5 Different Ring Types in Register S40............................................................................................ 3-9
Table 3-6 Modem Security Function ........................................................................................................... 3-11
Table 3-7 Fax Physical Layer Capacity ....................................................................................................... 3-12
Table 4-1 Result Codes .................................................................................................................................. 4-1
Table 5-1 Basic AT Command Sets............................................................................................................... 5-1
Table 5-2 AT Command Sets Requiring an "AT" Prefix............................................................................... 5-1
Table 5-3 Extended AT& Command Sets...................................................................................................... 5-4
Table 5-4 Extended AT* Command Sets....................................................................................................... 5-9
Table 5-5 Extended AT# Command Sets..................................................................................................... 5-10
Table 5-6 Service Class 1 Commands.......................................................................................................... 5-11
Table 5-7 The Value of <MOD> Parameters............................................................................................... 5-11
Table 5-8 Service Class 2 Command Syntax ............................................................................................... 5-13
Table 5-9 Service Class 2 Commands Supported Commands (per TIA PN2388 8/20/90).......................... 5-13
Table 5-10 Class 2 Command Responses......................................................................................................... 5-17
Table 5-11 Service Class 2.0 Commands..................................................................................................... 5-18
Table 5-12 Voice AT Commands ................................................................................................................ 5-22
Table 5-13 Voice Shielded DTE Commands............................................................................................... 5-24

Omni 56K II and Omni 56K Plus II User’s Guide
x ListofTables
Table 5-14 Voice Shielded DTE Responses.................................................................................................5-24
Table 5-15 Basic S-Registers "ATSn=x"......................................................................................................5-25
Table 5-16 Extended S-Registers "ATSn=x"................................................................................................5-26
Table 7-1 Troubleshooting..............................................................................................................................7-1

Omni 56K II and Omni 56K Plus II User’s Guide
Preface xi
Preface
Thank you for purchasing the ZyXEL Omni 56K II /Omni 56K Plus II modem.
Register your modem online at www.zyxel.com for free future product updates and
information.
About This User's Guide
This manual is designed to guide you through the installation and configuration of your modem.
Related Documentation
Supporting Disk
More detailed information and examples can be found in the included disk (as well as on the zyxel.com web
site).
Quick Start Guide
The Quick Start Guide is designed to help you get up and running right away. It contains a detailed, easy-to-
follow connection diagram, and information on configuring for Internet access.
ZyXEL Glossary and Web Site
Please refer to www.zyxel.com for an online glossary of networking terms and additional support
documentation.
Syntax Conventions
“Enter” means for you to type one or more characters and press the carriage return. “Select” or “Choose”
means for you to select one predefined choice.
For brevity's sake, we will use "e.g." as shorthand for "for instance" and "i.e." for "that is" or "in other words"
throughout this manual.
The Omni 56K II and Omni 56K Plus II may be referred to as the modem or the device in this manual.

Omni 56K II and Omni 56K Plus II User’s Guide
Getting to Know Your Modem 1-1
Chapter 1
Getting To Know Your Modem
This chapter introduces you to the features and specifications for the ZyXEL Omni 56K II and
Omni 56K Plus II modems.
1.1 The Omni 56K II and Omni 56K Plus II Modem
The Omni 56K II and Omni 56K Plus II are analog Data/Fax/Voice modems used for Internet access via
telephone wire. The Omni 56K Plus II also supports a Universal Serial Bus (USB) connection to a computer.
Both modems can run upstream maximum rates of 48 kilobits per second (Kbps) and downstream rates of
56Kbps. The actual rate depends on the line quality, the distance to the exchange and server side
configuration.
1.2 Features of the Omni 56K II and Omni 56K Plus II Modem
ZyDAS Fifth Generation Data Pump with V.92 Capability
The Omni 56K II and Omni 56K Plus II modems provide the v.92 quick connect feature. This feature can
shorten the modem handshaking time and therefore reduces the wait time and associated dial-up cost for each
new connection.
V.92: 56K Down-stream and 48K Up-stream Data Transmission
The Omni 56K II and Omni 56K Plus II modems comply with the V.92 standard for data communications.
This means that your modem is able to communicate at 56K on data communications originating from your
service provider and at 48K on communications going to your service provider.
Microsoft Windows 95/98/2000/Me/XP: RS-232 Plug and Play Compatible
Your modem provides the convenience of simply being connected to the serial port on your computer. The
serial port is a dedicated communications port and allows for optimum data speeds between your computer
and modem.
Microsoft Windows 98/2000/Me/XP: USB Plug and Play Compatible (Omni 56K Plus
II)
The Omni 56K Plus II modem is fully compliant to the USB 1.1 standard. You can use the USB port to
install the Omni 56 Plus II without having to restart your computer.

Omni 56K II and Omni 56K Plus II User’s Guide
1-2 Getting to Know Your Modem
Hot-swappable with Other USB Devices (Omni 56K Plus II)
The USB option allows you to simply plug in or disconnect your modem without the need for lengthy
computer restarts. This timesaving benefit simplifies the installation process as well as providing a quick and
easy way to transfer your modem between different computers.
Automatic Data/Fax Call Detection
The Omni 56K II and Omni 56K Plus II modems can automatically answer an incoming call and ascertain
whether that call is a data or a fax call. When used with the supplied software, this feature will allow you to
use your modem as a powerful communications device that can receive calls, broadcast and receive messages
from voice boxes, and receive faxes on one phone line.
G3 14.4Kbps Fax Send/Receive
Your modem supports the V.17 fax standard that will allow for fax speeds of up to 14400 bps when
transmitting to another V.17 fax machine. When connecting to an earlier G3 fax device, your modem
operates at speeds up to 9600.
Support Fax Class 1, Class 2 and Class 2.0 Command Set
The fax facilities as offered on the Omni 56K II and Omni 56K Plus II modems provide full compatibility
with the class 1, class 2 and class 2.0 command sets. This compatibility means that your fax modem is fully
configurable with a wider range of options that can be optimized if need be.
Voice Digitization (via the IS-101 Command Set) and Compression
The IS-101 Command Set is a defined standard that details the voice recording and playback capability of a
data communications device. The Omni 56K II and Omni 56K Plus II modems follow this standard and this
allows for the recording and transmission of digitized voice and voice/data.
When activated, this feature provides the ability to digitize incoming voice messages, which the computer
stores and either plays back at your request, or forwards onto other remote devices. This means that the
modem can playback a recorded digitized voice online for the use of message announcements or act as a
separate answering service.
Data Compression and Error Correction
Data compression is utilized to reduce the number of bits actually sent and received. This saves on the actual
amount of data being sent and therefore increases the modem's speed (or throughput). Error correction
protocols are used so that the compressed data can be accurately decompressed on the receiving end.
Omni 56K II and Omni 56K Plus II modems support V.44, V.42bis and MNP5 data compression protocols as
well as MNP4/V.42 error correction. MNP5 is used with MNP4 error control; V.44 and V.42bis are used
with V.42 error control. The compression efficiency of V.42bis is generally higher than that of MNP5.

Omni 56K II and Omni 56K Plus II User’s Guide
Getting to Know Your Modem 1-3
Flash ROM Upgradeable
ZyXEL has a policy of free distribution of new firmware when it becomes available. You can download the
updated firmware from www.zyxel.com and install it in your modems.

Omni 56K II and Omni 56K Plus II User’s Guide
Installation 2-1
Chapter 2
Installation
This chapter guides you through the installation process for your modem.
2.1 Panel Descriptions
2.1.1 Front Panel LEDs
The descriptions of the front panel LEDs are listed below:
Table 2-1 Front Panel LEDS For Omni 56K Plus II
LED FUNCTION STATUS DESCRIPTION
USB USB indication ON
OFF
The USB link is up.
The USB link is down or the modem is in RS-232 mode.
OH Hook Status ON
OFF
The modem is off hook.
The modem is on hook.
DATA Data Traffic ON
OFF
The modem is sending or receiving data.
The modem is not sending or receiving data.
MR Modem Ready ON
OFF
The modem is ready.
The modem is not ready.
Table 2-2 Front Panel LEDs for Omni 56K II
LED FUNCTION STATUS DESCRIPTION
V.92 V.92 mode ON
OFF
The modem is operating in V.92 mode.
The modem is not operating in V.92 mode.
OH Hook Status ON
OFF
The modem is off hook.
The modem is on hook.
DATA Data Traffic ON
OFF
The modem is sending or receiving data.
The modem is not sending or receiving data.
MR Modem Ready ON
OFF
The modem is ready.
The modem is not ready.

Omni 56K II and Omni 56K Plus II User’s Guide
2-2 Installation
2.1.2 Back Panel
Table 2-3 Back Panel Description
LABEL DESCRIPTION
ON/OFF The power switch for the modem.
AC IN This receptacle is the power input socket and is used to plug the power adapter
into the modem.
RS-232 This serial port DB-9 female connector is used to plug the RS-232 cable from
serial port of a DTE or computer.
USB
(Omni 56K Plus II only)
A Universal Serial Bus connector that connects to the USB port on your
computer or to an USB hub.
LINE Connect this analog RJ-11 port to a wall phone jack.
PHONE Connect this analog RJ-11 port to your telephone.
Figure 2-1 Omni 56K Plus II Rear Panel and Connections

Omni 56K II and Omni 56K Plus II User’s Guide
Installation 2-3
The rear panel for the Omni 56K Plus II is identical to the rear panel of the Omni 56K Plus II, except that the
Omni 56K II does not have the USB port.
2.2 Connecting Your Omni 56K II (RS-232 Port)
Step 1. Connect your modem to your analog phone or fax.
Step 2. Use the phone cord included to connect to the phone jack on the wall.
Step 3. Plug one end of your RS-232 cable to your modem and the other end to your computer's serial
port.
Step 4. Use the included power adaptor to connect your modem to the power outlet. Turn on the
modem
Step 5. Turn on your computer and insert the included CD.
2.2.1 Driver Installation
Windows automatically starts an installation wizard when it detects new hardware. Use the wizard to select
the driver on your included CD. Browse to D:\Drivers\Omni56KII (where D: is your CD-ROM drive), and
click Next or OK.

Omni 56K II and Omni 56K Plus II User’s Guide
2-4 Installation
Figure 2-2 Windows 98 Add New Hardware Wizard