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ZyXEL G-302 v3 802.1 1g Wireless PCI Adapter User ’ s Guide V ersion 2.0 0 Edition 2 5/2007 ...
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ZyXEL G-302 v3 User’s Guide Copyright 3 Copyright Copyright © 2007 by ZyXEL Communications Corpo ration. The contents of this publication may not be reprod uced in any part or as a whole, transcribed, stored in a retrieval system, tran slated into any language, or transmitted in any form or by any means, el ectronic, mechanical , magnetic, optic ...
ZyXEL G-302 v3 User’s Guide 4 Certifications Certifications Federal Communications Commissi on (FCC) Interference St atement The device complies with Part 15 of FCC rules. Operation is subject to the following two conditions: • This device may not cause harmful interference. • This device must accept any interference rece ived, including inte ...
ZyXEL G-302 v3 User’s Guide Certifications 5 注意 ! 依據 低功率電波輻射性 電機管理辦法 第十二條 經型式 認證合格之低功率射頻電機，非經 許可，公司、商號或使用 者均不得擅自變更頻率、加大功 率或變更原設計之特性及功能。 第十四條 低功率 射頻電機之使用不得影? ...
ZyXEL G-302 v3 User’s Guide 6 ZyXEL Limited Warranty ZyXEL Limited W arranty ZyXEL warrants to the original en d 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 purch ase. During the warranty period , and upon proof of p urchase, should the product hav e ...
ZyXEL G-302 v3 User’s Guide Customer Support 7 Customer Support Please have the following information r eady when you contact customer support. • Product model and serial number . • W arranty Information. • Date that you received your de vice. • Brief description of the problem and the steps yo u took to solve it. METHOD LOCATION SUPPORT ...
ZyXEL G-302 v3 User’s Guide 8 Customer Suppo rt +” is the (prefix) number you enter to make an interna tional telephone call. NORWAY support@zyxel.no +47-22-80-61-80 www .zyxel.no ZyXEL Communications A/S Nils Hansens vei 13 0667 Oslo Norway sales@zyxel.no +47-22-80-61-81 POLAND info@pl.zyxel.com +48 (22) 333 8250 www .pl.zyxel.com ZyXEL Commun ...
ZyXEL G-302 v3 User’s Guide Table of Contents 9 T able of Content s Copyright .................................................. ................................................................ 3 Certifications ............................................ ................................................................ 4 ZyXEL Limited W arranty . ...
ZyXEL G-302 v3 User’s Guide 10 Table of Contents 2.2.3.1 Encryption ....................... ............. ................ ............. ................ ..... 27 2.2.3.2 User Authentication ......... ................ ............. ................ ............. ..... 27 2.2.4 WP A(2)-PSK Application Example .. ................................... ...
ZyXEL G-302 v3 User’s Guide List of Figure s 11 List of Figures Figure 1 Application: Infrastructure ... ................ ............. ................ ............. .......... 18 Figure 2 Application: Ad-Hoc ................... ................ ................ ................ ............. 18 Figure 3 Enable WZC ......... ................ ... ...
ZyXEL G-302 v3 User’s Guide 12 List of Figures Figure 39 Windows XP: Wireless (network) pr operties: Authentic ation .......... ....... 57 Figure 40 Windows XP: Prot ected EAP Properties ......... ................ ............. .......... 58 Figure 41 Windows XP: Smart Card or othe r Cert ificate Properties ...................... 59 Figure 42 Win ...
ZyXEL G-302 v3 User’s Guide List of Tables 13 List of T ables T able 1 ZyXEL Utility : System Tr ay Icon ........ ................ ................ ................ ....... 20 T able 2 ZyXEL Utility: Menu Screen Summar y ........................... ............. ............. 21 T able 3 Link Info .......... ................ ................ .... ...
ZyXEL G-302 v3 User’s Guide 14 List of Tables ...
ZyXEL G-302 v3 User’s Guide Preface 15 Preface Congratulations on your purchase of the Zy XEL G-302 v3 802.1 1g Wireless PCI Adapter. Y our G-302 v3 is easy to install and configure. About This U ser's Guide This manual is designed to guide y ou through the configu ration of your G-302 v3 for its various applications . Related Document ation ...
ZyXEL G-302 v3 User’s Guide 16 Preface Graphics Icons Key Access Point Computer Notebook Computer Server Internet Cloud Wireless Signal ...
ZyXEL G-302 v3 User’s Guide Chapter 1 Getting Started 17 C HAPTER 1 Getting S t arted This chapter introduces the G-302 v3 an d prepares you to use the ZyXEL ut ility . 1.1 About Y our G-302 v3 The G-302 v3 is an IEEE 802.1 1b/g compliant wireless LAN adapter . The following lists the main features of your G-302 v3. See the product specifications ...
ZyXEL G-302 v3 User’s Guide 18 Chapter 1 Getting Started Figure 1 Application: Infrastructure 1.1.1.2 Ad-Hoc In case you prefer to set up a small independ ent wireless workgroup without an AP , use the Ad-Hoc mode. Ad-hoc mode does not require an AP or a wi red network. T wo or more wireless clients communicate directly to each other . Figure 2 A ...
ZyXEL G-302 v3 User’s Guide Chapter 1 Getting Started 19 1.2 G-302 v3 Hardware and Utility Inst allation Follow the instructions in the Quick S tart Guide to install the ZyXEL utility and make hardware connections . 1.3 Configuration Methods T o configure your G-30 2 v3, use one of the following ap plications: • W ireless Zero Configuration (WZ ...
ZyXEL G-302 v3 User’s Guide 20 Chapter 1 Getting Started 1.5 Accessing the ZyXEL Utility After you install and start the ZyXEL utility , an icon for the ZyXEL utility appears in the system tray . Note: When the ZyXEL utility system tray icon displays, the G-302 v3 is inst alled properly . When you use the ZyXEL utility , it automatically disables ...
ZyXEL G-302 v3 User’s Guide Chapter 1 Getting Started 21 The following table describes the menus. 1.7 Connecting to a Wireless LAN The following sections show you how to associate with a network using the ZyXEL utility . Y ou can either manually connect to a network or configure a profile to have t h e G-302 v3 automatically connect to a speci fi ...
ZyXEL G-302 v3 User’s Guide 22 Chapter 1 Getting Started Figure 7 ZyXEL Utility: Site Survey 4 T o join a network, either click an entry in the table and then click Connect . 5 If the wireless security is activated for the sele cted wireless network, the Security Settings screen displays. This screen varies according to the network’ s encryptio ...
ZyXEL G-302 v3 User’s Guide Chapter 1 Getting Started 23 Figure 9 ZyXEL Utility: Link Info ...
ZyXEL G-302 v3 User’s Guide 24 Chapter 1 Getting Started ...
ZyXEL G-302 v3 User’s Guide Chapter 2 Wireless LAN Network 25 C HAPTER 2 Wireless LAN Network This chapter provides backgro und in formation on wireless LAN network. 2.1 Wireless LAN Overview This section describes the wireless LAN network terms and applications. 2.1.1 SSID The SSID (Service Set Identity) is a unique name shared am ong all wirele ...
ZyXEL G-302 v3 User’s Guide 26 Ch apter 2 Wireless LAN Network 2.2.1 Dat a Encryption with WEP WEP (W ired Equivalent Privacy) encryption scram bles all data packets transmitted between the G-302 v3 and the AP or other wireles s sta tions to keep network communications private. Both the wireless stations and the access po ints must use the same W ...
ZyXEL G-302 v3 User’s Guide Chapter 2 Wireless LAN Network 27 2.2.3 WP A and WP A2 W i-Fi Protected Access (WP A) is a subset of the IEEE 802.11i standard. WP A2 (IEEE 802.1 1i) is a wireless security standard tha t defines stronger encryp tion, authentication and key manage ment than WP A. Key differences between WP A(2) and WEP are improved dat ...
ZyXEL G-302 v3 User’s Guide 28 Ch apter 2 Wireless LAN Network 1 First enter identical passwords into the AP an d all wireless c lients. The Pre-Shared Key (PSK) must consist of between 8 and 63 ASCII characters or 64 hexadecimal characters (including spaces and symbols). 2 The AP checks each client's password and (o nly) allows it to join t ...
ZyXEL G-302 v3 User’s Guide Chapter 2 Wireless LAN Network 29 Figure 1 1 WP A(2) with RADIUS Application Example 2.3 Authentication T y pe The IEEE 802.1 1b/g standard describes a simple authentication method between the wireless stations and AP . T wo authentication types are defined: an Open system mode and a Shared key mode. • Open system mo ...
ZyXEL G-302 v3 User’s Guide 30 Ch apter 2 Wireless LAN Network ...
ZyXEL G-302 v3 User’s Guide Chapter 3 ZyXEL Utilit y Configuration 31 C HAPTER 3 ZyXEL Utility Configuration This chapter shows you how to configure yo ur G-302 v3 in wireless station mode. 3.1 The Link Info Screen When the ZyXEL utility starts, the Link Info screen displays, showing the current configuration and conne ction status of your G-302 ...
ZyXEL G-302 v3 User’s Guide 32 Chapter 3 ZyXEL Utility Configuration 3.1.1 T rend Chart Click T r end Chart in the Link Info screen to display a screen as shown below . Use this screen to view real-time data traffic statistics. Figure 13 Link Info: T rend Chart T ransmissio n Rate This field displays the current tr ansmission rate of the G-302 v3 ...
ZyXEL G-302 v3 User’s Guide Chapter 3 ZyXEL Utilit y Configuration 33 The following table describes the labels in this screen. 3.2 The Site Survey Screen Use the Site Survey screen to scan for and connect to a wireless network automatically . Figure 14 Site Survey The following table describes the labels in this screen. Table 4 Link Info: Trend C ...
ZyXEL G-302 v3 User’s Guide 34 Chapter 3 ZyXEL Utility Configuration 3.2.1 Connecting to a WLAN Network Follow the steps below to connect to a WLAN network using the Site Survey screen. 1 Click Scan to search for all available wireless networks within range. 2 T o join a network, click an entry in the tabl e to select a wireless network and t hen ...
ZyXEL G-302 v3 User’s Guide Chapter 3 ZyXEL Utilit y Configuration 35 3.2.2.1 WEP Encryption Figure 15 Security Settings: WEP The following table describes the labels in this screen. Table 6 Security Settings: WEP LABEL DESCRIPTION WEP Select 64 Bit s or 128 Bits to activate WEP encryption and then fill in the related fields. Authentication Ty p ...
ZyXEL G-302 v3 User’s Guide 36 Chapter 3 ZyXEL Utility Configuration 3.2.2.2 WP A/WP A2 Note: Y ou can use WP A and WP A2 with the G-302 v3 only in Microsoft Windows XP or Windows 2000. Figure 16 Security Settings: WP A/WP A2 The following table describes the labels in this screen. Next Click Next to confirm your selecti ons and advance to the Co ...
ZyXEL G-302 v3 User’s Guide Chapter 3 ZyXEL Utilit y Configuration 37 3.2.2.3 WP A-PSK/WP A2-PSK Note: Y ou can use WP A and WP A2 with the G-302 v3 only in Microsoft Windows XP or Windows 2000. Figure 17 Security Settings: WP A-PSK/WP A2-PS K The following table describes the labels in this screen. PEAP Inner EAP This field is on ly available wh ...
ZyXEL G-302 v3 User’s Guide 38 Chapter 3 ZyXEL Utility Configuration 3.2.3 Confirm Save Screen Use this screen to confirm an d save the security settings. Figure 18 Confirm Save Screen The following table describes the labels in this screen. 3.3 The Profile Screen A profile is a set of wireless para meters that you need to connec t to a wi reless ...
ZyXEL G-302 v3 User’s Guide Chapter 3 ZyXEL Utilit y Configuration 39 Click the Profile tab in the ZyXEL utility to display the Pr ofile screen as shown next. The profile function allows you to save the wireless network settin gs in this screen, or use one of the pre-configured network profiles. Figure 19 Profile Screen The following table descri ...
ZyXEL G-302 v3 User’s Guide 40 Chapter 3 ZyXEL Utility Configuration 3.3.1 Adding a New Prof ile Follow the steps below to add a new profile. 1 Click Add in the Pr ofile screen. An Add New Profile screen displays as shown next. Click Next to continue. Figure 20 Profile: Add New Profile The following table describes the labels in this screen. Prof ...
ZyXEL G-302 v3 User’s Guide Chapter 3 ZyXEL Utilit y Configuration 41 2 If you select the Infrastructure network type in the previous screen, skip to step 3. If yo u select the Ad-Hoc network type in the previous scr een, a screen displays as follows. Select a channel number and click Next to continue. Figure 21 Profile: Wireless Setting: Select ...
ZyXEL G-302 v3 User’s Guide 42 Chapter 3 ZyXEL Utility Configuration The following table describes the labels in this screen. 3 If you select Infrastructure network type in the first screen, select WEP , WP A , WP A2 , WP A-PSK or WP A2-PSK from the drop-down list box to enable data encryption. If you select Ad-Hoc network type in the first scree ...
ZyXEL G-302 v3 User’s Guide Chapter 3 ZyXEL Utilit y Configuration 43 Figure 23 Profile: Security Setting 5 This read-only screen shows a summary of the new profile settings. V erify that the settings are correct. Click Save to save and go to the next screen. Click Back to return to the previous screen. Otherwise, click Exit to go back to the Pro ...
ZyXEL G-302 v3 User’s Guide 44 Chapter 3 ZyXEL Utility Configuration 3.4 The Adapter Screen T o set the advanced fea tures on the G-302 v3, c lick the Adapter tab. Figure 26 Adapter Screen The following table describes the labels in this screen. Table 13 Adapte r LABEL DESCRIPTION Adapter Setting Wireless Mode Select 802.1 1b Only to have the G-3 ...
ZyXEL G-302 v3 User’s Guide Chapter 4 Maintenance 45 C HAPTER 4 Maintenance This chapter describes how to unin stall or upgrade the ZyXEL utility . 4.1 The About Screen The About screen displays related version numbers of the G-302 v3. T o display the screen as shown below , click the about ( ) button. Figure 27 About The following table describe ...
ZyXEL G-302 v3 User’s Guide 46 Chapter 4 Maintenance Figure 28 Uninstall: Confirm 3 Click Finish to complete uninstalling the softwa re and restart the computer when prompted. Figure 29 Uninstall: Finish 4.3 Upgrading the ZyXEL Utility Note: Before you uninst all the ZyXEL utility , take note of your current wirele ss configurations. T o perform ...
ZyXEL G-302 v3 User’s Guide Chapter 5 Trou bleshoot ing 47 C HAPTER 5 T roubleshooting This chapter covers potential problems and the possible remedies. After each problem description, some instructions ar e provided to help you to diag nose and to solve the problem. 5.1 Problems S t arting the ZyXEL Utility 5.2 Problem with the Link Quality Tabl ...
ZyXEL G-302 v3 User’s Guide 48 Chapter 5 Troubleshooting 5.3 Problems Communicating With Other Computers Table 17 Troubleshootin g Communication Problem PROBLEM CORRECTIVE ACTION In wireless station mode, the computer with the G-302 v3 installed cannot communicate with the other computer(s). In Infrastructure Mode • Make sure that th e AP and t ...
ZyXEL G-302 v3 User’s Guide Appendix A Product Specifications 49 A PPENDIX A Product S pecifications Table 18 Product Specification s PHYSICAL AND ENVIRONMENTAL Product Name ZyXEL G-302 v3 802.1 1g Wireless PCI Adapter Interface 3.3V 32-bit PCI V2. 2 S tandards IEEE 802.1 1b IEEE 802.1 1g Network Architectures Infrastructure Ad-Hoc Antenna One 2 ...
ZyXEL G-302 v3 User’s Guide 50 Appendix A Product Specifications ZyXEL Utility ZyXEL Wireless Configurati on T ool Security 64/128/256-bit WEP WP A/WP A-PSK/WP A2/WP A2-PSK IEEE 802.1x Table 18 Product Specification s (continued) ...
ZyXEL G-302 v3 User’s Guide Appendix B Management with Wireless Zero Configuration 51 A PPENDIX B Management with Wireless Zero Configuration This appendix shows you how to manage y our ZyXEL wireless LA N adapter using the W indows XP wireless zero configuration tool. Be sure you have the W indows XP service pack 2 installed on your computer . O ...
ZyXEL G-302 v3 User’s Guide 52 Appendix B Management with Wireless Zero Configuration Connecting to a Wireless Network 1 Double-click the network icon for wireless conn ections in the system tray to open the W ireless Network Connection S tatus screen. Figure 31 Windows XP SP2: System T ray Icon The type of the wireless network icon in W ind ows ...
ZyXEL G-302 v3 User’s Guide Appendix B Management with Wireless Zero Configuration 53 W indows XP SP1: In the W ireless Network Connection S tatus screen, click Properties and the Wir eless Ne tworks tab to open the Wir eless Network Connection Properties screen. Figure 33 Windows XP SP1: Wireles s Network Con nection S tatus 3 W indows XP SP2: C ...
ZyXEL G-302 v3 User’s Guide 54 Appendix B Management with Wireless Zero Configuration The following table describes the ic ons in the wireless network list. W indows XP SP1: Click Refresh to reload and search for available wireless devices within transmission range. Sel ect a wireless network in the A vailable networks list, click Configure and s ...
ZyXEL G-302 v3 User’s Guide Appendix B Management with Wireless Zero Configuration 55 If there is no security activated for the se lected wireless ne twork, a warning screen appears. Click Connect Anyway if wireless security is not your concern. Figure 36 Windows XP SP2: W ireless Networ k Connection: WEP or WP A-PSK Figure 37 Windows XP SP2: W i ...
ZyXEL G-302 v3 User’s Guide 56 Appendix B Management with Wireless Zero Configuration Association Select a network in the Preferred networks lis t and click Properties to view or configure security . Figure 38 Windows XP : Wireless (netwo rk) properties: Association The following table describes the labels in this screen. Table 22 Windows XP: Wir ...
ZyXEL G-302 v3 User’s Guide Appendix B Management with Wireless Zero Configuration 57 Authentication Click the Authentication tab in the Wir eless (network) prop erties screen to display the screen shown next. Th e fields on thi s screen ar e grayed out when the network is in Ad-Hoc mode or data encryption is disabled. Figure 39 Windows XP: Wirel ...
ZyXEL G-302 v3 User’s Guide 58 Appendix B Management with Wireless Zero Configuration Authentication Properties Select an EAP authen tication type in the W ireless (network) properties: Authentication screen and clic k the Properties button to display th e following screen. Protected EAP Properties Figure 40 Windows XP : Protected E AP Properties ...
ZyXEL G-302 v3 User’s Guide Appendix B Management with Wireless Zero Configuration 59 The following table describes the labels in this screen. Smart Card or other Certificate Proper t ies Figure 41 Windows XP: Smart Card or other Certificate Properties Table 24 Windows XP: Protected EAP Properties LABEL DESCRIPTION V alidate server certificate Se ...
ZyXEL G-302 v3 User’s Guide 60 Appendix B Management with Wireless Zero Configuration The following table describes the labels in this screen. Ordering the Preferred Networks Follow the steps below to manage y our preferred networks. 1 W indows XP SP2: Click Change the or der of pr eferr ed networks in the Wir eless Network Connection screen (see ...
ZyXEL G-302 v3 User’s Guide Appendix B Management with Wireless Zero Configuration 61 Figure 42 Windows XP SP2: Wireles s Networks: Pr eferred Net works W indows XP SP1: In the W ireless Network Connection S tatus screen, click Properties and the Wireless Networks tab to open the sc reen as shown. Figure 43 Windows XP SP1: Wireles s Networks: Pr ...
ZyXEL G-302 v3 User’s Guide 62 Appendix B Management with Wireless Zero Configuration ...
ZyXEL G-302 v3 User’s Guide Appendix C Wir eless Security 63 A PPENDIX C W ireless Security T ypes of EAP Authentication This section discusses some popular authen tication types: EAP-MD5, EAP-TLS, EAP-TTLS, PEAP and LEAP . The type of authentication you use depends on the RADIUS ser ver or the AP . Consult your network administrator for more inf ...
ZyXEL G-302 v3 User’s Guide 64 Appendix C Wireless Security EAP-TTLS (T unneled T ransport Layer Service) EAP-TTLS is an extension of the EAP-TLS authentication that uses certificates for only the server-side authentications to establish a secure connection. Client authen tication is then done by sending username and password throug h the secure ...
ZyXEL G-302 v3 User’s Guide Appendix C Wir eless Security 65 WP A(2) W i-Fi Protected Access (WP A) is a subset of the IEEE 802.11i standard. WP A2 (IEEE 802.1 1i) is a wireless security standard tha t defines stronger encryp tion, authentication and key manage ment than WP A. Key differences between WP A(2) and WEP are improved data encryption a ...
ZyXEL G-302 v3 User’s Guide 66 Appendix C Wireless Security The Message Integrity Check (MIC ) is designed to prevent an attacker from capturing data packets, altering them and resending them. The MIC provides a strong mathematical function in which the receiver and the transmitter each compute and then compare the MIC. If they do not match, it i ...
ZyXEL G-302 v3 User’s Guide Appendix C Wir eless Security 67 Figure 44 WP A-PSK Authentication WP A(2) with RADIUS Ap plication Example Y ou need the IP address of the RADIUS server , its port number (defau lt is 1812), and the RADIUS shared secret. A WP A(2) application example with an external RADIUS se rver looks as follows. "A" is t ...
ZyXEL G-302 v3 User’s Guide 68 Appendix C Wireless Security Security Parameters Summary Refer to this table to see what other secur ity parameters you should co nfigure for each Authentication Method/ key management prot ocol type. MAC address filters are not dependent on how you config ure these security features. Table 27 Wireless Security Rela ...
ZyXEL G-302 v3 User’s Guide Index 69 Index A About 45 activating a profile 43 Adapter 44 Ad-Hoc 41 Advanced Encryption St andard 27 , 65 advanced settings 44 antenna 17 antenna power output 49 authentication 35 authentication method open system 29 shared key 29 Authentication T ype 29 C CA 63 Certificate Authority 63 certifications notices 5 chan ...
ZyXEL G-302 v3 User’s Guide 70 Index N network type 31 O Odyssey Client Ma nager 19 open system authentication 29 P Pairwise Master Key (PMK) 65 passphrase 26 , 35 passwor d phrase 26 preamble 44 product specifications 49 profile 31 , 39 activation 43 add new 39 , 40 delete 39 edit 39 information 40 Q Quick S tart Guide 15 , 19 R radio interferen ...
ZyXEL G-302 v3 User’s Guide Index 71 wireless LAN channel 25 introduction 25 security 25 SSID 25 Wireless LAN (WLAN) 25 wireless standard 49 wireless station mode configuration 31 WLAN Security parameters 68 WP A 27 , 36 , 65 WP A2 27 , 36 , 65 WP A2-Pre-Shared Key 27 , 65 WP A2-PSK 27 , 37 , 65 WP A-PSK 27 , 37 , 65 WZC (Wireless Zero Configurat ...
ZyXEL Communications G-302のメーカーから受け取ることができるドキュメントは、いくつかのグループに分けられます。その一部は次の通りです:
- #BRANDの図面#
- G-302の取扱説明書
- ZyXEL Communicationsの製品カード
- パンフレット
- またはZyXEL Communications G-302の消費電力シール
それらは全部重要ですが、デバイス使用の観点から最も重要な情報は、ZyXEL Communications G-302の取扱説明書に含まれています。
取扱説明書と呼ばれる文書のグループは、ZyXEL Communications G-302の取り付け説明書、サービスマニュアル、簡易説明書、またはZyXEL Communications G-302のユーザーマニュアル等、より具体的なカテゴリーに分類されます。ご必要に応じてドキュメントを検索しましょう。私たちのウェブサイトでは、ZyXEL Communications G-302の製品を使用するにあたって最も人気のある説明書を閲覧できます。
ZyXEL Communications G-302デバイスの取扱説明書はどのようなものですか？
取扱説明書は、ユーザーマニュアル又は単に「マニュアル」とも呼ばれ、ユーザーがZyXEL Communications G-302を使用するのを助ける技術的文書のことです。説明書は通常、全てのZyXEL Communications G-302ユーザーが容易に理解できる文章にて書かれており、その作成者はその分野の専門家です。
ZyXEL Communicationsの取扱説明書には、基本的な要素が記載されているはずです。その一部は、カバー/タイトルページ、著作権ページ等、比較的重要度の低いものです。ですが、その他の部分には、ユーザーにとって重要な情報が記載されているはずです。
1. ZyXEL Communications G-302の説明書の概要と使用方法。説明書にはまず、その閲覧方法に関する手引きが書かれているはずです。そこにははZyXEL Communications G-302の目次に関する情報やよくある質問、最も一般的な問題に関する情報を見つけられるはずです。つまり、それらはユーザーが取扱説明書に最も期待する情報なのです。
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4. トラブルシューティング。ZyXEL Communications G-302に関する最も重要な問題を診断し、解決するために役立つ体系化された手続き
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