ZyXEL Communications 288S User Manual

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Omni 288S

User’s Manual

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Foreword

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 option, 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 remanufactured functionally equivalent product of equal value, and will be solely at the option 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 or character to the purchaser.

To obtain the services of this warranty, please 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 Any returned products without proof of purchase or those with an outdated warranty will be repaired or replaced (at the option of ZyXEL) and the customer will be billed for parts and labor.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 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 which vary from state to state.

The contents of this book may not be reproduced (in any part or as a whole) or transmitted in any form or by any means without the written permission of the publisher.

Omni 288S User’s Manual, Rev no. 1.01

Liability Notice

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 document is subject to change without notice.

Acknowledgements

The trademarks and brand names mentioned in this manual are used for plain informational purposes. Trademarks and brand names are the property of their respective owners.

Foreword

FCC Part 15 Information

This device complies with Part 15 of FCC rules. Operation is subject to the following two conditions:

1.This device may not cause harmful interference.

2.This device must accept any interference received, including interference that may cause undesired operations.

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 harmful interference to radio/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 the receiver.

∙Connect 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.

Changes or modifications not expressly approved by the party responsible for compliance could void the user’s authority to operate the equipment. Shielded RS-232 cables are required to be used to ensure compliance with FCC Part 15, and it is the responsibility of the user to provide and use shielded RS-232 cables.

FCC Requirements

This equipment complies with Part 68 of the FCC Rules. On the base unit of this equipment is a label that contains, among other information, the FCC Registration Number and the Ringer Equivalence Number (REN) for this equipment.

IF REQUESTED, THIS INFORMATION MUST BE GIVEN TO THE TELEPHONE COMPANY.

The REN is useful to determine the quantity of the devices you may connect to your telephone line and still have all of those devices ring when your telephone number is called. In most, but not all areas, the sum of the RENs of all devices connected to one line should not exceed five (5.0). To be certain of the number of devices you may connect to your line, as determined by the total RENs, you should contact your local telephone company to determine the maximum REN for your calling area.

If your equipment causes harm to the telephone network, the telephone company may discontinue your service temporarily. If possible, they will notify you in advance. But if

Foreword

advance notice isn’t practical, you will be notified as soon as possible. You will be informed of your right to file a complaint with the FCC.

Your telephone company may make changes in its facilities, equipment, operations, or procedures that could affect the proper functioning of your equipment. If they do, you will be notified in advance to give you an opportunity to maintain uninterrupted telephone service.

If you experience trouble with this telephone equipment, please contact the Address and Phone number listed in the warranty card for information on obtaining service or repairs.

The telephone company may ask that you disconnect this equipment from the network until the problem has been corrected or until you are sure the equipment is not malfunctioning.

The user is not authorized to repair or modify the equipment beyond uploading firmware into the flash EPROM.

This equipment may not be used on coin service provided by the telephone company. Connection to party lines is subject to state tariffs.

Information for Canadian Users

The Industry Canada (IC, formerly DOC) label identifies certified equipment. This certification means that the equipment meets certain telecommunications network protective, operational, and safety requirements. IC does not guarantee that the equipment will operate to a user’s satisfaction.

Before installing this equipment, users should ensure that it is permissible to be connected to the facilities of the local telecommunications company. The equipment must also be installed using an acceptable method of connection. In some cases, the company’s inside wiring associated with a single line individual service may be extended by means of a certified connector assembly (telephone extension card). The customer should be aware that the compliance with the above conditions may not prevent degradation of service in some situations.

Repairs to certified equipment should be made by an authorized Canadian maintenance facility designated by the supplier. Any repairs or alterations made by the user to this equipment, or equipment malfunctions, may give the telecommunications company cause to request the user to disconnect the equipment.

For their own protection, users should ensure that the electrical ground connections of the power utility, telephone lines, and internal metallic water pipe system, if present, are connected together. This precaution may be particularly important in rural areas.

Caution: Users should not attempt to make such connections themselves, but should contact the appropriate electrical inspection authority, or electrician, as appropriate.

iii

Foreword

The Load Number (LN) assigned to each terminal device denotes the percentage of the total load to be connected to the telephone loop used by the device without overloading. The termination on a loop may consist of any combination of devices, subject only to the requirement that the total of the Load Numbers of all the devices not exceed 100. The load number for the Omni 288S is 10.

This apparatus does not exceed the class B limits for radio noise emissions from digital apparatus set out in the radio interference regulations of Industry Canada.

Telephone Company Requirements

It is not necessary to notify your telephone company before installing the modem, but your telephone company may request the following information:

∙Telephone number to which the modem is connected.

∙Manufacturer and Model Number. ZyXEL Communications Corporation Omni 288S

∙FCC Part 68 Approval Number and REN#.

1ROTAI-22730-PT-E

REN# 0.3B

You will find also this information on a sticker on the bottom of the modems case.

The modem is connected to a public switched line using a USOC (Universal Service Order Code) RJ11C modular jack.

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

Default Modem Settings for PC’s ....................................................................	3-7
ZyXEL Serial/Parallel I/O Card .....................................................................	3-8

Helpful Hints for Mac Computers ..................................................................	3-8
Special AT Command Settings for Mac ...........................................................	3-8
Mac Serial Port.............................................................................................	3-8
Mac Software Tips.........................................................................................	3-8

Helpful Hints for UNIX-Based Computers.....................................................	3-9
Serial Cable..................................................................................................	3-9
Basic Modem Settings for UNIX .....................................................................	3-9
Unix Software Tips........................................................................................	3-9

Chapter 4 - Advanced Data Communications ...............	4-1
Front Panel LEDs ...........................................................................................	4-1
DTE Interface.................................................................................................	4-2
Synchronous and Asynchronous Communications ............................................	4-2
UART ...........................................................................................................	4-2
Serial Port ....................................................................................................	4-2
RS-232C or EIA-232D/E ................................................................................	4-3
Serial RS-232C Cable....................................................................................	4-3
Communication Protocols and Speeds ...........................................................	4-3
Universal Protocol Compatibility...................................................................	4-4
Choosing the Modem Link Options.................................................................	4-4
Setting the DTE to DCE Rate .........................................................................	4-5
Error Control..................................................................................................	4-5
Data Compression ..........................................................................................	4-6
Hardware or Software Flow Control .............................................................	4-7

Chapter 5 - Synchronous Mode Operation ...................	5-1
V.25bis Command Set....................................................................................	5-1
Clock Options ................................................................................................	5-2
RTS Options...................................................................................................	5-2
Command State Options .................................................................................	5-2
Dialing from Synchronous Mode....................................................................	5-3
Answering from Synchronous Mode ..............................................................	5-3
Chapter 6 - Leased Line Operation ...............................	6-1

Connecting to a 2-Wire Leased Line ..............................................................	6-1
Leased Line Handshaking...............................................................................	6-1
Terminating a Leased Line Connection ..........................................................	6-2

Chapter 7 - Cellular Mode Operation.............................	7-1
Cellular Phone Systems..................................................................................	7-1
Cellular Impairments......................................................................................	7-1
Cellular Modems and ZyCellular Technology................................................	7-2
ZyCellular Modes ..........................................................................................	7-2
Cellular Mode Usage.....................................................................................	7-3
Cellular Modem Installation Examples ..........................................................	7-3
Office Installation .........................................................................................	7-6

Chapter 8 - Special Functions.......................................	8-1
Security Functions ..........................................................................................	8-1
Levels of Security ..........................................................................................	8-1
User Passwords.............................................................................................	8-1
Remote Configuration.....................................................................................	8-2
Caller Number Delivery (Caller ID)..............................................................	8-4
Distinctive Ring .............................................................................................	8-6
Extended Distinctive Ring (EDR) ..................................................................	8-7
Setting Up EDR.............................................................................................	8-8
EDR Application Example .............................................................................	8-9

Chapter 9 - Fax Operation	.............................................9-1
Fax Basics......................................................................................................	9-1
Fax Branding................................................................................................	9-1
Modem as Fax Machine .................................................................................	9-1
ITU-T T.30 Fax Protocol ...............................................................................	9-2
Fax Command sets..........................................................................................	9-2
Class 1 Command Set ....................................................................................	9-2
Class 2 Command Set ....................................................................................	9-4
Class 2.0 Command Set .................................................................................	9-8
Extended Fax AT Command Set....................................................................	9-13
Flow Control...............................................................................................	9-16
Fax Reception from a BBS...........................................................................	9-16

Chapter 10 - Voice Mode Operation ............................	10-1
Voice Data Compression..............................................................................	10-1
Automatic Detection of Voice, Data, Fax .....................................................	10-2
Voice Input/Output Devices .........................................................................	10-2
Microphone and Speaker Jacks ....................................................................	10-2
Voice Input/Output Device Selection.............................................................	10-2

Voice Mode Application Examples .............................................................	10-3

Recording a greeting message......................................................................	10-3
Playing a voice file through the internal speaker...........................................	10-3
Plaing a voice file through the phone line.....................................................	10-4
Omni 288S as a Voice answering machine....................................................	10-4
Omni 288S as a Fax answering machine.......................................................	10-4
Omni 288S as a Data answering machine .....................................................	10-5

Voice States and Operation Modes ..............................................................	10-6
Voice Command State..................................................................................	10-6
Voice Data States ........................................................................................	10-7
Events and Actions with Shielded Code ......................................................	10-8
Event Detection and Reporting.....................................................................	10-8
Action Commands in Voice Data State..........................................................	10-9
Voice AT Commands .................................................................................	10-10
AT Command Syntax..................................................................................	10-11
Supported Commands in Voice Mode Operation..........................................	10-12
Voice Mode Action Commands...................................................................	10-14
Voice Mode Configuration Commands........................................................	10-16

Chapter 11 - AT Command Set Summaries.................	11-1
Basic AT Command Set ...............................................................................	11-1
Description of ATI2 Output:.........................................................................	11-3
Extended AT& Command Set.......................................................................	11-4
Extended AT* Command Set........................................................................	11-7

Chapter 12 - Status Registers & Result Codes ...........	12-1
S-Register Descriptions ...............................................................................	12-1
Basic S-Registers "ATSn=x".........................................................................	12-1
Extended S-Registers "ATSn=x"....................................................................	12-1
Result Code Options ..................................................................................	12-10
"ATXn" Result Code Option Table ..............................................................	12-10
Result Code Field Descriptions ..................................................................	12-11
Connect Strings for Error Corrected Connections........................................	12-11

Chapter 13 - Diagnostics & Troubleshooting .............	13-1
Diagnostics...................................................................................................	13-1
Power-On Self Test......................................................................................	13-1
Resetting The Modem ..................................................................................	13-2
Loopback Tests............................................................................................	13-2
Indicator Lights ..........................................................................................	13-3
Trouble Shooting..........................................................................................	13-4
Command Echo Problems ............................................................................	13-5

Appendix A - Upgrading Your Modem.........................	A-1

Appendix B - Contacting ZyXEL ..................................	B-1
ZyXEL Phone Numbers..................................................................................	B-1
Online Access ................................................................................................	B-2
Internet........................................................................................................	B-2
CompuServe.................................................................................................	B-2

Appendix C - Connector Pinouts .................................	C-1
Phone Jack Pinouts .........................................................................................	C-1
PC Serial Port Pinouts....................................................................................	C-1
Macintosh Serial Port Pinouts ........................................................................	C-2
Glossary........................................................................	D-1

Chapter 1 - Introduction

Congratulations on the purchase of your Omni 288S modem - one of ZyXEL's premier high-performance products. The Omni 288S is world renown for its ability to maintain ultra high speeds and clear, quality connections while communicating around the globe.

How to Use this Manual

The chapters and appendices in this complete User’sManual provide instructions and operation tips to get your modem functioning quickly and effectively. The following is a summary of what information you will find in each chapter of this Manual:

Chapter 2: Installation

Instructions for the installation of your Omni 288S.

Chapter 3: Basic Modem Operation

Overview of basic modem related functions and helpful hints to get you started.

Chapter 4: Advanced Data Communications

Detailed information on protocols and standards supported by the Omni 288S.

Chapter 5: Synchronous Mode Operation

Information on Asynchronous and Synchronous communications.

Chapter 6: Leased Line Operation

Describes the Omni 288S and leased line operations.

Chapter 7: Cellular Mode Operation

Instructions on how to utilize the cellular features of the Omni 288S.

Chapter 8: Special Functions

Instructions on how to use the special features of the Omni 288S.

Chapter 9: Fax Operation

Instructions on how to use the fax features of the Omni 288S.

Chap 10: Voice Mode Operation

How to take advantage of the voice features of the Omni 288S.

Chap 11: AT Command Set Summaries

Summary of Basic and Extended AT Commands supported by the Omni 288S.

Chap 12: Status Registers & Result Codes

Viewing and setting S-Registers and Result Codes.

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Chapter 1 - Introduction

Chap 13: Diagnostics & Troubleshooting

Tips for resolving modem problems and for using the Omni 288S’s diagnostic capabilities.

Appendix A: Upgrading Your Modem

Describes the process for upgrading the Omni 288S with flash EPROM.

Appendix B: Contact ZyXEL

How to contact ZyXEL for product support and configuration questions.

Appendix C: Connector Pinouts

Lists the pinouts of the various connectors on the Omni 288S.

If you do not find information on a specific topic, or if you would like more information about a topic covered in your Omni 288S User's Manual, please call ZyXEL Technical Support at 714-693-0808. Other means of contacting ZyXEL are listed in Appendix B.

Unpacking Your Modem

Enclosed Equipment

Before you proceed further, please check all items you received with your modem againgt this list to make sure nothing is missing. The complete package should include:

„ one (1) Omni 288S universal modem

„ one (1) AC power adapter (external model)

„ one (1) RJ11 modular telephone cable

„ one (1) Omni 288S User’s Manual

„ one (1) ZyXEL modem driver diskette with Windows 95 INF file

„ one (1) Data/Fax software for DOS and Windows environments

„ one (1) warranty/registration card

Contact your dealer or the store where you bought the modem if anything is missing. Check the modem for shipping damages. If you find any damage, contact the shipping agency immediately.

Retain shipping and cushioning materials for future storage or shipping needs.

Please direct any additional questions about damaged or missing materials to your dealer or distributor, or to the factory address listed in Appendix B. warranty card.

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Chapter 1 - Introduction

Required Equipment

In addition to the ZyXEL Omni 288S modem you just purchased, you must have the following equipment to operate your modem:

„ Computer terminal

„ Available PC serial port with a high-speed 16550 UART

„ Standard "straight-through” RS-232 cable (pins 1-8, 20, 22)

„ Available telephone jack

„ Available AC wall outlet

„ Telephone line from your telephone company (dial-up or leased line)

„ Data, fax, and voice communication software

Optional Equipment

The following items are optional for installing your Omni 288S:

„ Telephone for manually dialing and answering calls

„ Microphone for recording voice messages

„ Speakers for listening to recorded messages

Becoming a Registered Owner

Complete the pre-addressed Warranty Registration Card and place it in the mail. Registered owners will receive future product information and update announcements. Warranty registration is not necessary for product repair/or replacement - please also save your dated invoice as proof of purchase.

Omni 288S Modem Features

No other 28.8Kbps modem gives you so much for so little. Your Omni 288S is equipped with an array of standard and ZyXEL-famous Intelligent features designed to make your data communications faster, easier, and more convenient.

Standard features

„ Ultra-high speed modem - supports V.34 for 28,800bps and backwards compatible

„ Operates in all environments: Windows 95, DOS, Windows, Macintosh, OS/2, UNIX, Novell, Amiga, and IBM AS400/RS6000

„ V.42 and MNP 4/3 error correction

„ V.42bis and MNP 5 data compression

„ DTE serial interface with speeds up to 460.8Kbps

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Chapter 1 - Introduction

„ 13 LED lights

„ Extended AT command set with V.25bis

„ ZyCellular Protocol for demanding cellular operations - data and fax transmission over cellular networks

Intelligent Features

„ Automatic data, fax and voice call detection allows you to use a single telephone line to handle all three types of calls

„ Asynchronous and synchronous modes for reliable serial data communication

„ Fast retrain with automatic fall-forward and fall-back - the Omni 288S will automatically fall back to lower speeds when communicating with slower modems and when encountering unstable or variable line conditions..

„ Call-back security and password protection restricts access to authorized callers only.

„ Caller ID identifies incoming calls before you answer (you must subscribe to this service through your telephone company in order for your Omni 288S to identify callers)

„ Distinctive ring detects data, fax and voice calls (this feature requires communication software that supports distinctive ring, such as ZFAX)

„ Remote configuration capability

„ EDR (extended Distinctive Ring)

„ Flash EPROM memory lets you easily upload new firmware, providing you with easy access to new features.

„ ZyXEL exclusive Kernel Recovery Mode for no hassle recovery from failed flash uploads - no factory repairs.

Fax Compatibility

„ EIA Class 1, 2, and 2.0 Fax commands

„ ITU-T V.17 G3: up to 14,400bps

„ ITU-T V.29 G3: up to 9,600bps

„ ITU-T V.27ter G3: up to 4,800bps

„ ZyXEL Fax AT commands

Voice Features

„ TAPI support links the power of telephones and communication networks with your computer

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Chapter 1 - Introduction

„ Microphone jack is provided to increase the quality of voice recordings

„ Speaker jack lets you plug in an external speaker for clearer output of recorded messages.

„ 2, 3, 3-bit new and 4-bit ADPCM for high quality voice digitization with speech compression at 19.2Kbps, 28.8Kbps, 30.7Kbps, and 38.4Kbps

„ Simultaneous DTMF, dial-tone, answer tone and fax/data calling tone detection

„ Voice AT+V (IS-101) command set

Technical Specifications

„ Operating mode: auto-dial/answer

„ Flow control: software XON/XOFF or hardware CTS/RTS

„ Data/Voice toggle switch

„ Configuration settings: software programmable with nonvolatile memory for phone number/profile storage

„ Diagnostics: self test, analog loopback (with self test), digital loopback, and remote digital loopback (with self test)

„ Dialing type: tone/pulse dialing

„ Line interface: RJ-11 2-wire dial-up or leased line

„ Call progress monitoring: dial tone, busy, and ring back detection

„ Audio Monitor: programmable volume control

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Chapter 2 - Installation

This chapter covers the steps required to install your modem, install and configure the Windows 95 driver, as well as optional steps you may wish to take in the setup of your Omni 288S. More detailed instructions for various types of computers, such as IBM PCs and compatibles, Macs, and UNIX workstations, can be found in Chapter 3 of this Manual.

Required Steps for Omni 288S Installation

1.Turn off your computer.

2.Make sure the modem's power switch is in the OFF position.

3.Connect the power adapter. Plug one end of the power adapter to the round POWER JACK on the back of the modem. Plug the other end to an AC wall outlet. You can leave the power adapter plugged in when you are not using the modem. To prevent power surges from damaging your modem and computer, it is recommended that you connect the power adapter to a surge protector.


Power	To	To Serial	To Line	To Phone
Switch	Power	Port	(wall jack)
	Supply
Caution: Use only the power adapter supplied with your modem.				Never
	use a power adapter designed for a different product.

4.Connect the serial cable. Plug one end of the serial cable into the SERIAL connector on the back of the modem. Plug the other end of the serial cable to the back of your computer. Your Omni 288S comes with a high-speed serial interface capable of reaching DTE speeds of 460.8Kbps. Be sure that your PC serial port has a high-speed 16550 compatible Universal Asynchronous Receiver Transmitter (UART).

Note: Many older computers use a slow 16450 UART. This UART was not designed for high-speed communications and will significantly impede the performance of the Omni 288SS. To check whether your computer has a 16550 compatible UART, use a utility such as Microsoft Diagnostics (MSD) to verify the

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Chapter 2 - Installation

type of UART installed in your computer. If your computer has a 16450 UART, either replace it with a 16550 UART or add a serial card with a 16550 UART to your system.

5.Connect the telephone cord. Plug one end of the supplied telephone (RJ-11) cord into the LINE jack on the back of the modem. Plug the other end into a telephone wall jack, just as you would a standard telephone.

6.Turn the computer back on.

7.Turn the Omni 288S back on by raising the power switch. The PWR LED should come on and the modem performs a self-test procedure.

Note: If the modem’s SQ LED is flashing, it has failed the self-test. Consult Chapter 13 of this Manual for troubleshooting information.

Optional Steps for Omni 288S Installation

The Omni 288S is equipped with a telephone jack and speaker and microphone jacks on the back panel. The following sections briefly describe how to take advantage of these features.

Telephone Jack

Connect a telephone to the PHONE jack on the back panel of the modem to manually dial and answer calls when the modem is not exchanging data.

Microphone

To connect an external microphone, connect it to the modem’s MIC jack on the back of the modem. The microphone jack can accommodate input from a standard 600 Ohm microphone.

Speaker

To connect an external speaker, connect it to the modem’s SPK jack found on the back of the modem. The modem’s speaker jack accommodates a single 8 Ohm

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Chapter 2 - Installation

speaker. To connect two speakers, obtain a dual-plug adapter that allows the modem speaker jack to drive both speakers. This adapter can be found at most electronics stores.

Driver and Software Installation

This section contains step by step procedures for installing the Windows 95 and NT drivers, and configuring Dial-up Networking for the Omni 288S.

Windows 95 Driver Installation

Open the Control Panel by double clicking the "Control Panel" icon in your "My Computer" folder.

Double click "Modems.” Then click the "Add" button. The following dialog box will appear.

Select "Don't detect my modem; I will select from a list..” Then click "Next.”

Click the "Have Disk" button.

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Chapter 2 - Installation

Insert the ZyXEL Windows 95 driver disk into your floppy drive and click OK. If you have downloaded an updated INF file from ZyXEL’s FTP, Website, or BBS, use "Browse" to find the location of the updated .INF file, click "Open.” Then click "OK.”

Select Omni288S from the list. Then click "Next.”

Select the COM port your modem is connected to and click "Next.” A final dialog will appear. Click "Finish.” You should see a window similar to the one below.

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Chapter 2 - Installation

Click "Close.” This completes the installation of your Omni 288S modem driver. You may now use programs such as "Dial-Up Networking" with your ZyXEL modem.

Windows 95 Dial-up Networking

If you have not installed the Dial-Up Networking feature in Windows 95, please install it before you continue.

Double click on the "My Computer" icon and then double click on the "Dial-up Networking" icon. From within the Dial-up Networking folder, double click on the "Make New Connection" icon.

Choose a name for your connection and select your modem type from the drop down window. Then click on the "Next" button.

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Chapter 2 - Installation

Enter the phone number to your ISP or whatever host you are calling into. Click on the "Next" button.

Click on the Finish button. A new icon is created in the Dial-up Networking folder.

Right click on this icon. Then select "Properties" from the menu.

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Chapter 2 - Installation

Make sure your Omni modem appears in the "Connect Using.” Then click on the "Server Type" button.

These options are mostly host or server specific.

„ If you are using PPP, use the default settings shown above.

„ If you are logging on to an Internet connection, then select "TCP/IP.”

„ If you are connecting to a LAN, then select "Login to Network.”

„ If you are logging on to a Microsoft Windows network, select "NetBEUI.”

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Chapter 2 - Installation

„ If you are logging on to a Novell network, then select "IPX/SPX Compatible.”

Once complete click on "TCP/IP Settings.”

If your host requires you to specify an IP address (Static IP), then click on the "Specify and IP address" radio button and enter your IP address. If your host assigns an IP when you log in (Dynamic IP), then leave the "Server assigned IP address" checked. Most servers assign an IP to you when you log in.

Click the "Specify name server address" radio button and enter your primary and secondary DNS (Domain Name Server) IP.

In most cases, you should leave "Use IP header compression" and "Use default remote gateway" checked. When all of the selections have been made, click the "OK" buttons on all three opened dialog boxes.

This completes the remote connection definition. Locate the new connection icon in your "Dial-up Networking" folder, and double click on it.

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Chapter 2 - Installation

If the User name and Password are incorrect or missing, type them in. Click on the Connect button and your Omni 288S will dial the number and establish a connection to your Internet Service Provider.

Note: The default protocol for Dial-up Networking is Point-to-Point Protocol (PPP). If your ISP requires you to use Serial Line Interface Protocol (SLIP), you may need to create a special logon script file. Because the procedures for logging on with SLIP accounts vary greatly from ISP to ISP, you should consult the technical support department of your service provider for this information.

Setup for DOS Fax/Modem Software

After installing the Omni 288S, use the following procedures to verify your modem connections.

1.Install and load your communications software. If you need assistance, refer to the manual that came with the software.

2.If your communications software requires you to select a modem, and the ZyXEL Omni 288S is not one of the choices, you can either check our web site for the driver or select the ZyXEL U-1496 modem. In many cases, the commands for these modems are identical.

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Chapter 2 - Installation

3.Select the following communication settings:

Setting	Value
Baud rate	57,600bps
Data bits	8
Parity	None
Stop bits	1
Flow control	Hardware
Initialization string	AT&F
Port	COMn*

Note: When specifying a port assignment, the ‘n’ indicates the computer serial port to which your modem is attached. For example, if your modem is connected to serial port 2, you would select COM2.

4.Place your communications software in terminal or direct connect mode (your communications software manual will explain how).

5.Look at the modem’s front panel and verify the DTR LED is ON. If this LED is OFF, your communications software is not addressing your modem at the correct COM port. Make sure your software is set up for the same COM port to which your modem is connected.

6.Type AT and press the Enter key. You should see the AT characters you typed, followed by an OK result code. If you do not see an OK result code, turn the modem off and on, then repeat this step. If you still cannot see the characters, refer to Chapter 13 for troubleshooting suggestions.

7.Type ATDT number and press Enter, where number is your modem’s telephone number. You should see a BUSY result code. If you do not see a BUSY result code, refer to Chapter 13 for troubleshooting suggestions.

If you are not able to successfully complete this test and have already followed the appropriate troubleshooting procedures Chapter 13, please call ZyXEL Tech Support at 714-693-0808.

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Chapter 3 - Basic Modem Operation

This chapter covers the basic commands and techniques involved in modem operation. In many cases, this is the only information you will need in order to get your Omni 288S up and running with communication software, and to start making connections with your Omni 288S.

Understanding AT Commands

The Omni 288S communicates asynchronously with computers using AT commands. AT commands are used to configure and control the Omni 288S. Commands are usually sent to the modem by way of communication software, but can also be entered manually by the user with the computer keyboard.

Command statements must be written in a specific form in order for the Omni 288S to recognize them. A command statement always begins with the letters AT or at. It is then followed by one or more commands and the <Enter> key.

AT commands can only be issued when the Omni 288S is in “command mode” or “off-line.”

Once the Omni 288S has established a connection with another modem it is said to be “on-line” or in “data mode.” In this mode, the characters sent to the Omni by your computer are transmitted to the remote modem rather than being interpreted by the Omni as commands.

Using the Windows 95 Hyper Terminal Program

In order to issue an AT command statement, you first need to run a communication program such as the Microsoft Windows “Hyper Terminal” program. This program provides a simple method to manually enter AT commands so you can do such things as “customize” the settings of your Omni 288S, or store phone

numbers you commonly will connect to.

Once the Omni is connected to your computer’s serial port and telephone line, Open the Windows 95 “Accessories” program group, and open the Hyper Terminal Program.

The program will prompt you for a name and Icon to use for your new connection. Type the name Test Connection and press <Enter>.

Next, you will be prompted for country information, area code and phone number, and the device used to make the connection. For this test purpose, do not enter a phone number; simply choose the COM port your Omni is connected to from the “Connect Using” list. Click “OK” when finished.

The next window sets the COM port settings. The settings used for The Omni 288S should be as follows.

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	Chapter 3 - Basic Modem Operation
Bits per second:	57600
Data bits:	8
Parity:	None
Stop bits:	1
Flow Control:	Hardware

Click “OK” when finished. After you have done this, save your new connection by selecting “Save” from the “File” menu and click “OK.” A new connection icon will be added to your Hyper Terminal folder.

You are now ready to start entering AT commands.

In the terminal window, type:

AT<Enter>

Omni 288S responds

This confirms that the modem and your computer are communicating correctly.

To test the telephone line connection issue the manual answer command.

Type:

ATA<Enter>

The Omni 288S will pick up the phone line, and try to communicate. Normally, this command is only used to answer an incoming call made from another modem. Thus the high pitched noise you will hear from the speaker. To abort the operation, press any key, or select “Disconnect” from the “Call” menu.

Dialing and Answering Techniques

Depending on what communications software you use to make modem connections, you may not have as much control of how the modem dials the telephone number. This section shows some useful examples of the AT commands used for dialing and answering operations. The command characters specific to each function are shown in bold type.

Dialing using the ATD Command

Touch Tone Dialing:	ATDT 555 1212
Pulse Dialing:	ATDP 555 1212
Tone and Pulse Dialing:	ATDP 555 1212 WT 24
Dialing Through a PBX:	ATDT 9 W 555 1212

Note: The 'W' in the dial string will cause the modem to wait for a second dial tone before it continues to dial.

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Chapter 3 - Basic Modem Operation

Pausing During Dialing:

ATDT 9,,555 1212

Note: The pause time for each comma is defined by S Register S8. Default is 2 seconds per comma.

Dialing Without Waiting for Dial Tone: ATX0D, 555 1212

Originating a call using an Answer Tone: ATDT 555 1212,,,,,,R

Redialing the Last Number Called:	ATDL
Waiting for Five Seconds of Silence:	ATDT 800 555 1212 @
	123456,1 714 555 1212
Transferring a Call (using flash hook):	ATDT! 2468

Auto-Answer and Hook Controls

Enabling Auto-Answer: ATS0=n

Note: In this example, n is a number from 1 to 255 that corresponds to the number of rings after which your modem answers an incoming call.

Disabling Auto-Answer:	ATS0=0
Manually Answering a Call:	ATA
Take modem off-hook:	ATH1
Hang up modem (on-hook):	ATH0
Manually Disconnecting a Call:	+++ATH

Making Your First Connection

For this example, we will use the connection you created in the Hyper Terminal program to dial the ZyXEL BBS. If you are using a different terminal program, run the program according to the instructions provided with it.

Start the terminal program by double-clicking the Test Connection icon. When the terminal window appears, enter the dial command with ZyXEL’s BBS as the phone number.

Type:

ATDT17146930762<enter> (Omit the ‘1714’ if you are in this area code)

The modem will go off-hook, dial the number, and after a few seconds of negotiation tones, you should be connected to our BBS.

You will receive a login message asking for your name. For the purposes of this example you need not continue. Just click the “disconnect” icon on the toolbar.

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Chapter 3 - Basic Modem Operation

Quick Tips when issuing AT Commands

„ The ENTER or RETURN key must be pressed to execute a command.

„ Multiple AT commands can be combined into one line. For example, AT&D2 and AT&N0 can be combined into one line AT&D3&N0.

„ The Omni 288S processes commands from left to right. The AT command that appears to the right might over-write the command to the left if they are trying to accomplish tasks or set modes that cannot coexist.

„ If you see duplicated characters for each one you type, your Omni 288S and software both have their “echo” feature turned. The Omni 288S command echo state is switched off using ATE0 and on using ATE1 (default). To eliminate the double characters, turn off the software’s command echo rather than using the ATE0 command. If you see no characters in your terminal window when you type, the modem’s echo setting is probably set to off. In this case, issue the ATE1 command.

„ When a command is successfully issued and accepted, a modem responds with what is called a “Result Code.” The Omni 288S supports both “verbose” result codes (i.e. “OK”), and “numerical” result codes (i.e. “0"). You can use the ATV command to set it one way or the other as follows.

Command	Description
ATV0	Select numerical result code
ATV1	Select verbose result code

„ There are a few basic commands that do not require the “AT” command prefix. These are as follows.

Command	Description
A/	Repeats the last issued AT command once
A>	Repeats the last issued AT command once, or re-dials
	the last dialed number up to 9 times until a key is
	pressed or a connection is made.
<any key>	Terminates the current connection attempt, if pressed
	while modem is handshaking.

+++Escape code sequence. Entered while the modem is in Data Mode. Returns modem to Command Mode.

„ The Omni 288S supports several groups of AT commands:

	AT Command Set/Type	Example
	Basic AT (Hayes compatible)	ATB0
	Basic AT$ (on line help)	AT$
	Extended AT& commands	AT&N0
	Extended AT* commands	AT*I1

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Chapter 3 - Basic Modem Operation

AT Command Set/Type	Example
Fax and Voice AT+ commands	AT+FCLASS=2
S-Register command	ATS0=1
S-Register bit-mapped command (set S-	ATS13.1=1
Register bit 1 equal to 1)
S-Register inquiry command	ATS0? Or ATS13.1?

You may browse the lists of available commands for each command set by using the on-line help commands: AT$, AT*$, AT&$, and ATS$. Further detail on AT commands will be covered in the chapters that pertain to their uses.

Modem Result Codes

When you execute or try to execute an AT command, your modem sends a result code to let you know whether the command was executed. An OK result code means the AT command you sent was executed. If you receive an ERROR code, it means the command was invalid.

The Omni 288S also provides result codes that show:

„ Whether or not a Dial Tone was detected when the modem originated a call.

„ If a busy signal was detected when the modem originated a call.

„ If a remote telephone ring was detected when dialing.

„ The speed, protocol, and error control / data compression method used.

„ If your modem has detected an incoming ring.

Result codes can originate from any of eight result code sets. The ATXn command lets you choose which set of result codes your modem uses. By default, your modem uses result codes equivalent to the ATX5 command.

The result code options will be covered more thoroughly in later chapters.

Viewing S Register Values

Status registers (or "S-registers") contain values that determine the modem’s operating characteristics. Whenever you send an AT command to your modem, you are actually changing the value of an S-register.

You can use the Sr? command to view the value of S-register ‘r’. For example, to view the value of S-register S0, which controls auto-answering, type ATS0? and press Enter. The modem responds with a three-digit character showing the value of this register, followed by OK. A value of 002, for example, means your modem will auto-answer incoming calls after the second ring.

Some S-registers are bit mapped. For these registers, you can use the Sr.b? command to read their values.

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