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U-336S and U-336SA
User’s Manual
Version 3.0
ZyXEL
TOTAL INTERNET ACCESS SOLUTION
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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
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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 which vary from state to state. Copyright © 1999 by ZyXEL 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. Published by ZyXEL Communications Corporation. All rights reserv
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limits are designed to provide reasonable protection against harmful interference in a commercial environment. 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. 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
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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. 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
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This product has been approved for connection to the Public Switched Telecommunication Network using interfaces compatible with ITU-TSS recommendation I.420 (Basic Rate ISDN user access). This product complies with the following directives: 1. The Council Directive 89/336/EEC of 3 May 1992 on the approximation of the laws of the member states relation to Electro Magnetic Compatibility. (EMC Directive) 2. Council Directive 91/263/EEC of 29 April 1991 on the approximation of the laws of th
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• Sales inquiries: sales@zyxel.com in North America sales@zyxel.com.tw outside North America. • Technical support: support@zyxel.com in North America. support@zyxel.com.tw outside North America. • Product information: Visit our site on the World Wide Web: http://www.zyxel.com. • FTP: Information , such as ZyXEL software and ROM updates for North America can be found at this FTP address: ftp.zyxel.com For European versions and related files, use the address: ftp.zyxel.co.at • Postal Se
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viii
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Contents ZyXEL Limited Warranty ii FCC Part 15 Information iii Information for Canadian Users iv Contacting ZyXEL vi 1 Introduction 1 Required Equipment 1 Modem Features 2 Standard Features 2 Intelligent Features 3 Fax Compatibility 4 Technical Specifications 4 2 Installation 7 Front Panel 7 Front Panel LEDs 8 Front Panel Switches 9 Rear Panel Markings 9 Modem Connection 10 Powering Up 12 3 Basic Modem Operation 13 Understanding AT Commands 13 Using the Windows 95 Hyper Term
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Auto-Answer and Hook Controls 16 Quick Tips when issuing AT Commands 17 Modem Result Codes 19 Viewing S Register Values 19 Changing S Register Values 20 Non-Volatile Memory 20 Storing Phone Numbers 21 Dialing Stored Phone Numbers 21 Saving Settings and User Profiles 21 Helpful Hints for PC Computers 22 Default Modem Settings for PC’s 23 ZyXEL Serial/Parallel I/O Card 23 Helpful Hints for Mac Computers 24 Special AT Command Settings for Mac 24 Mac Serial Port 24 Mac Software Tips 2
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Dialing a Number 33 Manual Dial 34 Repeat Last Dial 35 Auto Answer 35 Dialing Messages 36 Panel Lock 41 V.25bis Command Set 42 Clock Options 43 RTS Options 44 Command State Options 44 Dialing from Synchronous Mode 44 Answering from Synchronous Mode 45 Auto-Answer 45 Manual Answer 45 5 Leased Line Operation 46 Connecting to a Leased Line 46 Power Level Setting 46 Leased Line Handshaking 46 Manual Connect 47 Auto Handshake 47 Aborting from Leased-Line Operation 47 Terminating
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Extended Distinctive Ring (EDR) 59 Setting Up EDR 60 EDR Application Example 61 7 Fax Operation 64 Fax Basics 64 Modem as Fax Machine 65 ITU-T T.30 Fax Protocol 65 Fax Command sets 66 Defining the Fax Command Sets 66 Class 1 Command Set 67 Class 2 Command Set 68 Class 2.0 Command Set 74 Extended Fax AT Command Set 81 Flow Control 85 Fax Reception from a BBS 86 8 AT Command Set Summaries 88 Basic AT Command Set 88 Description of ATI2 Output: 91 Extended AT& Command Set 94 Exten
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Connect Strings for Error Corrected Connections 127 10 Diagnostics & Troubleshooting 128 Diagnostics 128 Power-On Self Test 128 Resetting The Modem 129 Loopback Tests 130 Indicator Lights 132 Line Condition Status Display 132 Trouble Shooting 135 AT Command Set Problems 135 Command Echo Problems 136 Answer Problems 137 Dialing Problems 138 Data Transfer Problems 138 Connection Problems 139 11 Upgrading Your Modem 140 Upgrading by Flash EPROM 140 Kernel Recovery Mode 141 12 Conn
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1 Introduction Congratulations on the purchase of your U-336S/SA modem - one of ZyXEL's premier high-performance products. The U-336S and the U- 336SA modem are world renown for their ability to maintain ultra high speeds and clear, quality connections while communicating around the globe. This User’s Guide describes the use of both U-336S and U-336SA models and gives instructions for their installation and operation. All the features are common to both the models except for different inp
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• One AC power adapter (external model) for U336S modem only. • Available AC wall outlet. • Telephone line from your telephone company (dial-up or leased line). • Data and fax communication software. Modem Features No other 33.6 Kbps modem gives you so much for so little. Your modem 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 support
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• Extended AT command set with V.25bis. • Operates on 2-wire dial-up or 2-wire leased line. Intelligent Features • Automatic data and voice call detection allows you to use a single telephone line to handle both types of calls. • Asynchronous and synchronous modes for reliable serial data communication. • Fast retrain with automatic fall-forward and fall-back. Your modem will automatically fall back to lower speeds when communicating with slower modems and when encountering unstable or
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• 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. Technical Specifications • Operating mode: auto-dial/answer. • Flow control: software XON/XOFF or hardware CTS/RTS. • Configuration settings: software programmable with non-volatile memory for
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• Audio Monitor: programmable volume control. Introduction 5
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6 Introduction
