ZyXEL Communications MAX-306M1

Chapter 22 Troubleshooting

User’s Guide

256

Contents

Main MAX-306M1 Series WiMAX MIMO Outdoor Simple CPE Page About This User's Guide Intended Audience Note: This book covers the following models: MAX-306M1 and MAX-316M1. Related Documentation Users Guide Feedback Document Conventions Warnings and Notes Warnings tell you about things that could harm you or your WiMAX Modem. Syntax Conventions Icons Used in Figures Table 1 Common Icons Safety Warnings For your safety, be sure to read and follow all warning notices and instructions. Page Page Contents Overview Page Table of Contents Part I: Introduction and Wizards........................................................... 29 Part III: Advanced Screens.................................................................... 71 Page Part IV: Voice Screens......................................................................... 129 Part V: Tools & Status Screens........................................................... 165 Page Part VI: Troubleshooting and Specifications .................................... 247 Part VII: Appendices and Index .......................................................... 265 Page List of Figures Page Page Page Page Page List of Tables Page Page Page Page Page CHAPTER 1 Getting Started 1.1 About Your WiMAX Modem 1.1.1 WiMAX Internet Access Figure 1 Mobile Station and Base Station 1.1.2 Make Calls via Internet Telephony Service Provider Figure 2 WiMAX Modems VoIP Features - Peer-to-Peer Calls Figure 3 WiMAX Modems VoIP Features - Calls via VoIP Service Provider 1.2 WiMAX Modem Hardware 1.2.1 LEDs Figure 4 The WiMAX Modems LEDs Table 2 The WiMAX Modem STRENGTH INDICATORS ACTIVITY INDICATOR 1.3 Good Habits for Managing the Device Table 2 The WiMAX Modem CHAPTER 2 Introducing the Web Configurator 2.1 Overview 2.1.1 Accessing the Web Configurator Page Page 2.2 The Main Screen Chapter 2 Introducing the Web Configurator The following table describes the labels in this screen. Users Guide 39 Table 4 Main Table 3 Main > Icons (continued) ICON DESCRIPTION Chapter 2 Introducing the Web Configurator Table 4 Main (continued) CHAPTER 3 Internet Connection Wizard Figure 6 Select a Mode 3.1 Overview 3.1.1 Welcome to the ZyXEL Setup Wizard 3.1.2 System Information Figure 7 Internet Connection Wizard > System Information Table 5 Internet Connection Wizard > System Information 3.1.3 Authentication Settings Figure 8 Internet Connection Wizard > Authentication Settings Screen Table 6 Internet Connection Wizard > Authentication Settings Screen Chapter 3 Internet Connection Wizard Table 6 Internet Connection Wizard > Authentication Settings Screen (continued) 3.1.4 IP Address Figure 9 Internet Connection Wizard > IP Address Table 7 Internet Connection Wizard > IP Address Page CHAPTER 4 VoIP Connection Wizard Figure 11 Select a Mode 4.1 Overview 4.2 Welcome to the ZyXEL Setup Wizard 4.2.1 First Voice Account Settings Figure 12 VoIP Connection > First Voice Account Settings Table 8 VoIP Connection > First Voice Account Settings Page Page CHAPTER 5 Tutorials Page 5.2.1 Connecting Your Small Network to the Internet 5.2.2 Changing Service Providers Note: You can also use the Internet Connection Wizard to configure these settings. Page Page Page Page 5.3 Configuring Your Internet Phone Figure 16 Phone Call Example Page 5.3.1 Placing an Internet Phone Call 5.4 Remotely Managing Your WiMAX Modem Page Page CHAPTER 6 The Setup Screens 6.1 Overview 6.1.1 What You Can Do in This Chapter 6.1.2 What You Need to Know 6.2 Set IP Address 6.3 DHCP Client 6.4 Time Setting Figure 19 SETUP > Time Setting Table 10 SETUP > DHCP Client (continued) Table 11 SETUP > Time Setting 6.4.1 Pre-Defined NTP Time Servers List Table 11 SETUP > Time Setting (continued) 6.4.2 Resetting the Time Table 12 Pre-defined NTP Time Servers Page Page CHAPTER 7 The LAN Configuration Screens 7.1 Overview 7.1.1 What You Can Do in This Chapter 7.1.2 What You Need to Know 7.2 DHCP Setup Chapter 7 The LAN Configuration Screens Users Guide 75 The following table describes the labels in this screen. Table 13 ADVANCED > LAN Configuration > DHCP Setup 7.3 Static DHCP 7.4 IP Static Route Table 15 Advanced> LAN Configuration > IP Static Route Table 16 Advanced> LAN Configuration > IP Static Route 7.4.1 IP Static Route Setup Figure 23 Advanced> LAN Configuration > IP Static Route Setup Table 17 Advanced> LAN Configuration > IP Static Route > Edit 7.5 Other Settings Figure 24 ADVANCED > LAN Configuration > Other Settings Table 17 Advanced> LAN Configuration > IP Static Route > Edit (continued) Table 18 ADVANCED > LAN Configuration > Other Settings 7.6 Technical Reference 7.6.1 IP Address and Subnet Mask Table 18 ADVANCED > LAN Configuration > Other Settings (continued) 7.6.2 DHCP Setup 7.6.3 LAN TCP/IP 7.6.4 DNS Server Address 7.6.5 RIP Setup 7.6.6 Multicast Page CHAPTER 8 The WAN Configuration Screens 8.1 Overview 8.1.1 What You Can Do in This Chapter 8.1.2 What You Need to Know Figure 25 WiMax: Mobile Station Figure 26 WiMAX: Multiple Mobile Stations Authentication Figure 27 Using an AAA Server 8.2 Internet Connection Table 19 ADVANCED > WAN Configuration > Internet Connection > ISP Parameters for Internet Access Chapter 8 The WAN Configuration Screens Users Guide 89 8.3 WiMAX Configuration Page 8.3.1 Frequency Ranges Figure 30 Frequency Ranges 8.3.2 Configuring Frequency Settings Note: It may take several minutes for the WiMAX Modem to find a connection. 8.3.3 Using the WiMAX Frequency Screen Table 22 DL Frequency Example Settings Figure 31 Completing the WiMAX Frequency Screen 8.4 Advanced Figure 32 ADVANCED > WAN Configuration > Advanced Chapter 8 The WAN Configuration Screens Users Guide 95 Table 23 ADVANCED > WAN Configuration > Advanced Page CHAPTER 9 The VPN Transport Screens BSZ R 9.1 Overview 9.1.1 What You Can Do in This Chapter 9.1.2 What You Need to Know Identifying Users B Figure 34 Identifying Users PORT 1 PORT 2 9.2 General Figure 35 ADVANCED > VPN Transport > General Table 24 ADVANCED > VPN Transport > General 9.3 Customer Interface Figure 36 Pseudowire Mapping R 10 20 9.3.1 Multi-Protocol Label Switching 9.3.2 Generic Routing Encapsulation Figure 37 VPLS Tunneling 9.3.3 Customer Interface Options Figure 38 ADVANCED > VPN Transport > Customer Interface Table 25 Advanced> VPN Transport > Customer Interface Table 26 ADVANCED > VPN Transport > Customer Interface 9.3.4 Customer Interface Setup Figure 39 ADVANCED > VPN Transport > Customer Interface Setup Table 26 ADVANCED > VPN Transport > Customer Interface (continued) 9.4 Ethernet Pseudowire Table 27 ADVANCED > VPN Transport > Customer Interface Setup A B 9.4.1 Ethernet Pseudowire Setup Figure 42 ADVANCED > VPN Transport > Ethernet Pseudowire Setup Table 29 ADVANCED > VPN Transport > Ethernet Pseudowire (continued) Table 30 ADVANCED > VPN Transport > Ethernet Pseudowire Setup 9.5 Statistics Figure 43 ADVANCED > VPN Transport > Statistics Table 30 ADVANCED > VPN Transport > Ethernet Pseudowire Setup (continued) Table 31 ADVANCED > VPN Transport > Statistics Page CHAPTER 10 The NAT Configuration Screens Figure 44 ADVANCED > NAT Configuration > General 10.1 Overview 10.1.1 What You Can Do in This Chapter 10.3 Port Forwarding Table 32 ADVANCED > NAT Configuration > General Figure 45 Multiple Servers Behind NAT Example 10.3.1 Port Forwarding Options Figure 46 ADVANCED > NAT Configuration > Port Forwarding Chapter 10 The NAT Configuration Screens The following table describes the icons in this screen. Table 33 Advanced> NAT Configuration > Port Forwarding ICON DESCRIPTION Table 34 ADVANCED > NAT Configuration > Port Forwarding 10.3.2 Port Forwarding Rule Setup Figure 47 ADVANCED > NAT Configuration > Port Forwarding > Rule Setup Table 35 ADVANCED > NAT Configuration > Port Forwarding > Rule Setup 10.4 Trigger Port Figure 48 ADVANCED > NAT Configuration > Trigger Port Table 36 ADVANCED > NAT Configuration > Trigger Port Chapter 10 The NAT Configuration Screens Users Guide 115 10.4.1 Trigger Port Forwarding Example Figure 49 Trigger Port Forwarding Example Table 36 ADVANCED > NAT Configuration > Trigger Port (continued) 10.5 ALG Figure 50 ADVANCED > NAT Configuration > ALG Table 37 ADVANCED > NAT Configuration > ALG Page CHAPTER 11 The System Configuration 11.1 Overview 11.1.1 What You Can Do in This Chapter 11.1.2 What You Need to Know Domain Name DNS Server Address Assignment 11.2 General Figure 51 ADVANCED > System Configuration > General Table 38 ADVANCED > System Configuration > General 11.3 Dynamic DNS Note: If you have a private WAN IP address, then you cannot use Dynamic DNS. Table 38 ADVANCED > System Configuration > General (continued) Figure 52 ADVANCED > System Configuration > Dynamic DNS Table 39 ADVANCED > System Configuration > Dynamic DNS 11.4 Firmware Table 39 ADVANCED > System Configuration > Dynamic DNS (continued) 11.4.1 The Firmware Upload Process 11.5 Configuration Figure 54 ADVANCED > System Configuration > Configuration Table 41 ADVANCED > System Configuration > Configuration Note: Do not turn off the device while configuration file upload is in progress. 11.5.1 The Restore Configuration Process 11.6 Restart Page Page Page CHAPTER 12 The Service Configuration 12.1 Overview 12.1.1 What You Can Do in This Chapter 12.1.2 What You Need to Know SIP Identities SIP Number SIP Service Domain SIP Register Server RTP 12.2 SIP Settings Figure 56 VOICE > Service Configuration > SIP Setting Table 43 VOICE > Service Configuration > SIP Setting 12.2.1 Advanced SIP Settings 12.2.1.1 STUN 1 NAT A 12.2.1.4 MWI (Message Waiting Indication) 12.2.1.5 Advanced SIP Settings Options Figure 58 VOICE > Service Configuration > SIP Settings > Advanced Table 44 VOICE > Service Configuration > SIP Settings > Advanced Page Page 12.2.1.6 Custom Tones (IVR) Table 45 Custom Tones Details 12.3 QoS Figure 59 VOICE > Service Configuration > QoS Table 46 VOICE > Service Configuration > QoS 12.4 Technical Reference 12.4.1 SIP Call Progression Table 46 VOICE > Service Configuration > QoS Table 47 SIP Call Progression 12.4.2 SIP Client Server 12.4.3 SIP User Agent AB Figure 60 SIP User Agent 12.4.4 SIP Proxy Server 12.4.5 SIP Redirect Server 12.4.6 NAT and SIP 12.4.7 DiffServ 12.4.8 DSCP and Per-Hop Behavior Figure 63 DiffServ: Differentiated Service Field (2-bit) Page CHAPTER 13 The Phone Screens 13.1 Overview 13.1.1 What You Can Do in This Chapter 13.1.2 What You Need to Know 13.2 Analog Phone 13.2.1 Advanced Analog Phone Setup Figure 65 VOICE > Phone > Analog Phone > Advanced Table 48 VOICE > Phone > Analog Phone Chapter 13 The Phone Screens 13.3 Common Click VOICE > Phone > Common to activate and deactivate immediate dialing. Figure 66 VOICE > Phone > Common Table 49 VOICE > Phone > Analog Phone > Advanced 13.4 Region Figure 67 VOICE > Phone > Region Table 50 VOICE > Phone > Common Table 51 VOICE > Phone > Region 13.5 Technical Reference 13.5.1 The Flash Key 13.5.2 Europe Type Supplementary Phone Services Table 52 European Type Flash Key Commands Page 13.5.3 USA Type Supplementary Services Table 53 USA Type Flash Key Commands Page Page CHAPTER 14 The Phone Book Screens 14.1 Overview 14.1.1 What You Can Do in This Chapter 14.1.2 What You Need to Know 14.2 Incoming Call Policy Figure 68 VOICE > Phone Book > Incoming Call Policy Table 54 VOICE > Phone Book > Incoming Call Policy Chapter 14 The Phone Book Screens Users Guide 161 Table 54 VOICE > Phone Book > Incoming Call Policy 14.3 Speed Dial Figure 69 VOICE > Phone Book > Speed Dial Table 55 VOICE > Phone Book > Speed Dial Setup Chapter 14 The Phone Book Screens Users Guide 163 Table 56 VOICE > Phone Book > Speed Dial Page PART V Page CHAPTER 15 The Certificates Screens 15.1 Overview 15.1.1 What You Can Do in This Chapter 15.1.2 What You Need to Know 15.2 My Certificates Figure 70 TOOLS > Certificates > My Certificates Table 57 TOOLS > Certificates > My Certificates Table 58 TOOLS > Certificates > My Certificates Table 58 TOOLS > Certificates > My Certificates (continued) Page Page Page Page 15.2.2 My Certificate Edit Figure 72 TOOLS > Certificates > My Certificates > Edit Page Page 15.2.3 My Certificate Import Figure 73 TOOLS > Certificates > My Certificates > Import Table 61 TOOLS > Certificates > My Certificates > Import 15.3 Trusted CAs Figure 74 TOOLS > Certificates > Trusted CAs Table 62 TOOLS > Certificates > Trusted CAs Table 63 TOOLS > Certificates > Trusted CAs Table 63 TOOLS > Certificates > Trusted CAs (continued) 15.3.1 Trusted CA Edit Figure 75 TOOLS > Certificates > Trusted CAs > Edit Table 64 TOOLS > Certificates > Trusted CAs > Edit Page Table 64 TOOLS > Certificates > Trusted CAs > Edit (continued) 15.3.2 Trusted CA Import 15.4 Technical Reference 15.4.1 Certificate Authorities 15.4.1.1 Advantages of Certificates 15.4.1.2 Self-signed Certificates 15.4.1.3 Factory Default Certificate 15.4.1.4 Certificate File Formats 15.4.2 Verifying a Certificate 15.4.2.1 Checking the Fingerprint of a Certificate on Your Computer Figure 77 Remote Host Certificates Figure 78 Certificate Details Page CHAPTER 16 The Firewall Screens 16.1 Overview 16.1.1 What You Can Do in This Chapter 16.1.2 What You Need to Know 16.2 Firewall Setting 16.2.1 Firewall Rule Directions Figure 79 Firewall Rule Directions 16.2.2 Triangle Route Figure 80 Ideal Firewall Setup Chapter 16 The Firewall Screens 16.2.3 General Options Click TOOLS > Firewall > General to configure the basic settings for your firewall. Figure 81 TOOLS > Firewall > General The following table describes the labels in this screen. Table 66 TOOLS > Firewall > General 16.3 Services Figure 82 TOOLS > Firewall > Service Setting Table 67 TOOLS > Firewall > Service Setting 16.4 Technical Reference 16.4.1 Stateful Inspection Firewall. Table 67 TOOLS > Firewall > Service Setting (continued) 16.4.2 Guidelines For Enhancing Security With Your Firewall 16.4.3 The Triangle Route Problem Figure 83 Triangle Route Problem 16.4.3.1 Solving the Triangle Route Problem Page Page CHAPTER 17 Content Filter 17.1 Overview 17.1.1 What You Can Do in This Chapter Page Chapter 17 Content Filter Users Guide 201 The following table describes the labels in this screen. Table 68 TOOLS > Content Filter > Filter 17.3 Schedule Figure 86 TOOLS > Content Filter > Schedule Table 69 TOOLS > Content Filter > Schedule CHAPTER 18 The Remote Management 18.1 Overview 18.1.1 What You Can Do in This Chapter Table 70 Remote Management 18.1.2 What You Need to Know Remote Management Limitations Remote Management and NAT System Timeout SNMP 18.2 WWW Figure 87 TOOLS > Remote Management > WWW Table 71 TOOLS > Remote Management > WWW 18.3 Telnet Figure 88 TOOLS > Remote Management > Telnet Figure 89 TOOLS > Remote Management > FTP 18.4 FTP Table 72 TOOLS > Remote Management > Telnet 18.5 SNMP Figure 90 SNMP Management Model Table 73 TOOLS > Remote Management > FTP 18.5.1 SNMP Traps Table 74 SNMP Traps 18.5.2 SNMP Options Figure 91 TOOLS > Remote Management > SNMP Table 75 TOOLS > Remote Management > SNMP 18.6 DNS Figure 92 TOOLS > Remote Management > DNS Table 75 TOOLS > Remote Management > SNMP (continued) Table 76 TOOLS > Remote Management > DNS Chapter 18 The Remote Management Screens 18.7 Security Figure 93 TOOLS > Remote Management > Security Table 77 TOOLS > Remote Management > Security 18.8 TR0-69 Figure 94 TR-069 Example Figure 95 TOOLS > Remote Management > TR069 Table 78 TOOLS > Remote Management > TR069 Note: This must be provided by the ACS administrator. Note: If this feature is not enabled then the WiMAX Modem cannot be managed remotely. Note: This must be provided by the ACS administrator. Note: You must separate the day information from the hour information with a T. Table 78 TOOLS > Remote Management > TR069 CHAPTER 19 QoS 19.1 Overview 19.2 General Figure 96 QoS > General 19.3 Class Setup Figure 97 QoS > Class Setup Table 80 QoS Class Setup 19.3.1 Class Configuration Figure 98 QoS > Class Setup > Class Configuration Table 81 QoS Class Setup Page CHAPTER 20 The Logs Screens 20.1 Overview 20.1.1 What You Can Do in This Chapter 20.1.2 What You Need to Know Table 82 Syslog Logs Table 83 RFC-2408 ISAKMP Payload Types LOG DISPLAY PAYLOAD TYPE 20.2 View Logs Figure 99 TOOLS > Logs > View Logs Table 84 TOOLS > Logs > View Logs Table 84 TOOLS > Logs > View Logs (continued) Page Table 85 TOOLS > Logs > Log Settings Chapter 20 The Logs Screens Users Guide 225 20.4 Log Message Descriptions The following tables provide descriptions of example log messages. Table 85 TOOLS > Logs > Log Settings Table 86 System Error Logs Table 88 Access Control Logs Table 87 System Maintenance Logs (continued) Chapter 20 The Logs Screens Users Guide 227 Table 89 TCP Reset Logs Table 90 Packet Filter Logs F Table 91 ICMP Logs Table 92 PPP Logs Table 93 UPnP Logs Chapter 20 The Logs Screens Table 94 Content Filtering Logs Table 95 Attack Logs Table 96 Remote Management Logs Table 95 Attack Logs (continued) Chapter 20 The Logs Screens Users Guide 231 Table 97 ICMP Notes TYPE CODE DESCRIPTION Table 96 Remote Management Logs Table 98 SIP Logs Table 99 RTP Logs Table 97 ICMP Notes (continued) TYPE CODE DESCRIPTION Table 100 FSM Logs: Caller Side Table 101 FSM Logs: Callee Side Table 102 Lifeline Logs Page CHAPTER 21 The Status Screen Figure 101 Status 21.1 Overview 21.2 Status Screen Table 103 Status Page Page 21.2.1 Packet Statistics Figure 102 Packet Statistics The following table describes the fields in this screen. Table 104 Packet Statistics 21.2.2 WiMAX Site Information Figure 103 WiMAX Site Information Table 105 WiMAX Site Information 21.2.3 DHCP Table Figure 104 DHCP Table Table 106 DHCP Table 21.2.4 VoIP Statistics Figure 105 VoIP Statistics Table 107 VoIP Statistics 21.2.5 WiMAX Profile Note: Not all WiMAX Modem models have all the fields shown here. Figure 106 WiMAX Profile Table 108 The WiMAX Profile Screen Table 108 The WiMAX Profile Screen (continued) Page Page CHAPTER 22 Troubleshooting 22.1 Power, Hardware Connections, and LEDs The WiMAX Modem does not turn on. None of the LEDs turn on. One of the LEDs does not behave as expected. 22.2 WiMAX Modem Access and Login I forgot the IP address for the WiMAX Modem. I forgot the password. I cannot see or access the Login screen in the web configurator. I can see the Login screen, but I cannot log in to the WiMAX Modem. I cannot Telnet to the WiMAX Modem. 22.3 Internet Access I cannot access the Internet. The Internet connection is slow or intermittent. The Internet connection disconnects. 22.4 Phone Calls and VoIP The telephone port wont work or the telephone lacks a dial tone. I can access the Internet, but cannot make VoIP calls. Problems With Multiple SIP Accounts 22.5 Reset the WiMAX Modem to Its Factory Defaults You will lose all of your changes when you push the Reset button. 22.5.1 Pop-up Windows, JavaScripts and Java Permissions Page Users Guide 257 CHAPTER 23 Product Specifications Table 109 Environmental and Hardware Specifications Table 110 Radio Specifications Table 111 Firmware Specifications Chapter 23 Product Specifications Users Guide 259 Table 111 Firmware Specifications (continued) Table 112 Standards Supported STANDARD DESCRIPTION Chapter 23 Product Specifications Users Guide 261 Table 113 Voice Features Table 112 Standards Supported (continued) STANDARD DESCRIPTION Table 114 Star (*) and Pound (#) Code Support Table 113 Voice Features Table 114 Star (*) and Pound (#) Code Support Page PART VII Page APPENDIX A WiMAX Security User Authentication and Data Encryption PKMv2 RADIUS Types of RADIUS Messages Diameter Security Association CCMP Page APPENDIX B Setting Up Your Computers IP Address Page Page Figure 111 Windows XP: Internet Protocol (TCP/IP) Properties Click OK to close the Local Area Connection Properties window.Verifying Settings Page Page Page Figure 118 Windows Vista: Internet Protocol Version 4 (TCP/IPv4) Properties Click OK to close the Local Area Connection Properties window.Verifying Settings Page Page Page Page Page Figure 127 Mac OS X 10.5: Network Preferences > Ethernet Page Figure 129 Mac OS X 10.5: Network Utility Linux: Ubuntu 8 (GNOME) Note: Make sure you are logged in as the root administrator. Page Page Figure 134 Ubuntu 8: Network Settings > Properties Figure 135 Ubuntu 8: Network Settings > DNS Page Page Page Page Page Page Page Page APPENDIX C Pop-up Windows, JavaScripts and Java Permissions Internet Explorer Pop-up Blockers Disable Pop-up Blockers Figure 145 Pop-up Blocker Enable Pop-up Blockers with Exceptions Page Page Figure 149 Internet Options: Security Page Page Page Page Page APPENDIX D IP Addresses and Subnetting Introduction to IP Addresses Structure Figure 155 Network Number and Host ID Subnet Masks Table 115 IP Address Network Number and Host ID Example Network Size Table 116 Subnet Masks Table 117 Maximum Host Numbers Notation Subnetting Table 118 Alternative Subnet Mask Notation Figure 156 Subnetting Example: Before Subnetting Figure 157 Subnetting Example: After Subnetting Example: Four Subnets Table 119 Subnet 1 Table 120 Subnet 2 Table 121 Subnet 3 Table 122 Subnet 4 Example: Eight Subnets Subnet Planning Table 122 Subnet 4 (continued) Table 123 Eight Subnets Table 124 24-bit Network Number Subnet Planning Configuring IP Addresses Table 125 16-bit Network Number Subnet Planning Private IP Addresses IP Address Conflicts Conflicting Computer IP Addresses Example Figure 158 Conflicting Computer IP Addresses Example Conflicting Router IP Addresses Example Figure 159 Conflicting Computer IP Addresses Example Conflicting Computer and Router IP Addresses Example Page APPENDIX E Importing Certificates Page Page Page Page Page Page Installing a Stand-Alone Certificate File in Internet Explorer Removing a Certificate in Internet Explorer Page Page Page Page Installing a Stand-Alone Certificate File in Firefox Page Page Page Page Page Page Page Page Page Page Page Page Page Installing a Stand-Alone Certificate File in Konqueror Page Removing a Certificate in Konqueror Page Page APPENDIX F SIP Passthrough Page APPENDIX G Common Services Table 126 Commonly Used Services Appendix G Common Services NAME PROTOCOL PORT(S) DESCRIPTION Appendix G Common Services NAME PROTOCOL PORT(S) DESCRIPTION Users Guide 357 Page APPENDIX H Legal Information Copyright Disclaimers Trademarks ! Notices Viewing Certifications ZyXEL Limited Warranty Note Registration APPENDIX I Customer Support Required Information Corporate Headquarters (Worldwide) China - ZyXEL Communications (Beijing) Corp. China - ZyXEL Communications (Shanghai) Corp. Costa Rica Czech Republic Denmark Finland France Germany Hungary India Japan Kazakhstan Malaysia North America Norway Poland Russia Singapore Spain Sweden Taiw an Thailand Turkey Ukraine United Kingdom Page Index B C D E F G H K L M N O Q R S T U V W