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3Com 3CRADSL72 User Manual

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ADSL 11g Wireless Router

User Guide

Part No. DUA-ADSL72-AAA01
Rev. 01
Published Sept 2003


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  • Page 1: Adsl 11g Wireless Router

    ADSL 11g Wireless Router User Guide 3CRADSL72 Part No. DUA-ADSL72-AAA01 Rev. 01 Published Sept 2003...
  • Page 2 3Com Corporation reserves the right to revise this documentation and to make changes in content from time 95052-8145 to time without obligation on the part of 3Com Corporation to provide notification of such revision or change. 3Com Corporation provides this documentation without warranty, term, or condition of any kind, either implied or expressed, including, but not limited to, the implied warranties, terms or conditions of merchantability, satisfactory quality, and fitness for a particular purpose.
  • Page 3: Table Of Contents

    ONTENTS BOUT UIDE Naming Convention Conventions Feedback about this User Guide Related Documentation NTRODUCING THE OUTER ADSL 11g Wireless Router Router Advantages Package Contents Minimum System and Component Requirements Front Panel Rear Panel ARDWARE NSTALLATION Introduction Safety Information Positioning the Router Using the Rubber Feet Powering Up the Router Connecting the Router...
  • Page 4 UNNING THE ETUP IZARD Accessing the Wizard DSL Settings Summary OUTER ONFIGURATION Navigating Through the Router Configuration Pages Main Menu Home Screen Home LAN Setup LAN Settings DHCP Client List Internet WAN Connection Type PPPoE PPPoA Disable Internet Sharing Multiple Protocol over ATM Wireless Channel and SSID Security...
  • Page 5 WAN Ping Blocking Security Log Utilities Restart Router Restore Factory Default Save/Backup Settings Restore Previous Settings Firmware Update System Settings Administrator Password Time and Time Zone Remote Management NAT Enable Universal Plug and Play ROUBLESHOOTING Basic Connection Checks Browsing to the Router Configuration Screens Connecting to the Internet Forgotten Password and Reset to Factory Defaults Wireless Networking...
  • Page 7: About This Guide

    Most user guides and release notes are available in Adobe Acrobat Reader Portable Document Format (PDF) on the 3Com World Wide Web site:
  • Page 8: Conventions

    Feedback about this Your suggestions are very important to us. They will help make our User Guide documentation more useful to you. Please e-mail comments about this document to 3Com at: Please include the following information when commenting: Document title...
  • Page 9: Related Documentation

    Conventions Example: ADSL 11g Wireless Router User Guide Part Number DUADSL7-2AAA01 Page 24 Do not use this e-mail address for technical support questions. For information about contacting Technical Support, please refer to the Support and Safety Information sheet. Related In addition to this guide, each Router document set includes one Documentation Installation Guide.
  • Page 10 BOUT UIDE...
  • Page 11: Introducing The Router

    NTRODUCING THE OUTER ® Welcome to the world of networking with 3Com . In the modern business environment, communication and sharing information is crucial. Computer networks have proved to be one of the fastest modes of communication but, until recently, only large businesses could afford the networking advantage.
  • Page 12 1: I HAPTER NTRODUCING THE OUTER Figure 1 Example Network Without a Gateway When you use the Router in your network (Figure 2), it becomes your connection to the Internet. Connections can be made directly to the Router, or to an OfficeConnect Switch or Hub, expanding the number of computers you can have in your network.
  • Page 13: Router Advantages

    Router Advantages Router Advantages The advantages of the Router include: Shared Internet connection for both wired and wireless computers High speed 802.11g wireless networking No need for a dedicated, “always on” computer serving as your Internet connection Cross-platform operation for compatibility with Windows, Unix and Macintosh computers Easy-to-use, Web-based setup and configuration Provides centralization of all network address settings (DHCP)
  • Page 14: Minimum System And Component Requirements

    1: I HAPTER NTRODUCING THE OUTER Minimum System Your Router requires that the computer(s) and components in your and Component network be configured with at least the following: Requirements A computer with an operating system that supports TCP/IP networking protocols (for example Windows 95/98/NT/Me/2000/XP, Unix, Mac OS 8.5 or higher).
  • Page 15: Rear Panel

    Rear Panel If this LED illuminates successful Username/Password has been authenticated with your ISP. 4 Wireless LAN (WLAN) Status LED Green If the LED is on it indicates that wireless networking is enabled. If the LED is flashing, the link is OK and data is being transmitted or received. If the LED is off, the Wireless LAN has been disabled in the Router, or there is a problem.
  • Page 16 1: I HAPTER NTRODUCING THE OUTER feature, which means either straight-through or a crossover cable can be used. 8 Reset Button If you want to reset your Router to factory default settings, and cannot access the web management interface (for example, due to a lost password), then you may use this button.
  • Page 17: Hardware Installation

    ARDWARE NSTALLATION Introduction This chapter will guide you through a basic installation of the Router, including: Connecting the Router to the Internet. Connecting the Router to your network. Setting up your computers for networking with the Router. Safety Information WARNING: Please read the “Safety Information”...
  • Page 18: Using The Rubber Feet

    Water or moisture cannot enter the case of the unit. Air flow around the unit and through the vents in the side of the case is not restricted. 3Com recommends you provide a minimum of 25 mm (1 in.) clearance.
  • Page 19 Connecting the Router Figure 5 Connecting the Gateway Power Supply Unit ADSL 11g Wireless Router Wireless Users Your PC 3 Run the provided telephone cable from the wall jack providing ADSL service to the ADSL port on your ADSL Router. When inserting an ADSL RJ-11 plug, be sure the tab on the plug clicks into position to ensure that it is properly seated.
  • Page 20 2: H HAPTER ARDWARE NSTALLATION Figure 6 Installing with a splitter If you are using a splitterless (G.lite) connection, then your service provider will attach the outside ADSL line directly to your phone system.In this case you can connect your phones and computer directly to the incoming ADSL line, but you will have to add low-pass filters to your phones as shown below (Figure...
  • Page 21 Router to communicate with the Internet. 3Com recommends that you perform the initial Router configuration from a computer that is directly connected to one of the LAN ports.
  • Page 23: Setting U Your Computers

    ETTING OMPUTERS The Router has the ability to dynamically allocate network addresses to the computers on your network, using DHCP. However, your computers need to be configured correctly for this to take place. To change the configuration of your computers to allow this, follow the instructions in this chapter.
  • Page 24 3: S HAPTER ETTING OMPUTERS Figure 8 Local Area Properties Screen 6 Ensure that the options Obtain an IP Address automatically, and Obtain DNS server address automatically are both selected as shown in Figure Click OK. Figure 9 Internet Protocol (TCP/IP) Properties Screen 7 Restart your computer.
  • Page 25: Windows Xp

    Obtaining an IP Address Automatically Windows XP 1 From the Windows Start menu, select Control Panel. 2 Click on Network and Internet Connections. 3 Click on the Network Connections icon. 4 Double click on LAN or High Speed Connection icon. A screen titled Local Area Connection Status will appear.
  • Page 26: Disabling Pppoe And Pptp Client Software

    3: S HAPTER ETTING OMPUTERS Disabling PPPoE If you have PPPoE client software installed on your computer, you will and PPTP Client need to disable it. To do this: Software 1 From the Windows Start menu, select Settings > Control Panel. 2 Double click on Internet Options.
  • Page 27: Running The S Wizard

    UNNING THE ETUP IZARD Accessing the The Router setup program is Web-based, which means that it is accessed Wizard through your Web browser (Netscape Navigator 4.7 or higher, Internet Explorer 5.0 or higher, or Mozilla 1.2.1 or higher). To use the Setup Wizard: 1 Ensure that you have at least one computer connected to the Gateway.
  • Page 28 4: R HAPTER UNNING THE ETUP IZARD Figure 12 Router Login Screen 5 When you have logged in either: The Home screen will appear (Figure 13). Select Wizard from the top menu bar. If your Router has not been configured before, the Wizard will launch automatically (refer to Figure 14).
  • Page 29: Dsl Settings

    Accessing the Wizard Figure 13 Home Screen DSL Settings Figure 14 DSL Settings Screen...
  • Page 30 4: R HAPTER UNNING THE ETUP IZARD The DSL Mode window allows you to set up the Router for the type of Internet connection you have. Before setting up your DSL connection mode, have your account information from your ISP ready. Select a DSL mode from the following: PPPoE see page 30...
  • Page 31 Accessing the Wizard To setup the router for use with a PPP over Ethernet (PPPoE) connection, use the following procedure: 1 Enter your PPP over Ethernet user name in the Username text box. 2 Enter your PPP over Ethernet password in the Password text box. 3 Re-type your PPP over Ethernet password in the Retype Password text box.
  • Page 32 4: R HAPTER UNNING THE ETUP IZARD Check all of your settings, and then click Next. RFC1483 Routed Mode To setup the Router for use with an RFC1483 routed connection: Figure 17 RFC1483 Routed Configuration Screen 1 Enter your Internet IP address in the WAN IP text box. 2 Enter the subnet mask in the Subnet Mask text box.
  • Page 33 Accessing the Wizard Figure 18 RFC1483 Bridged Configuration Screen 5 Enter your VPI and VCI informaiton in the VPI/VCI text boxes.
  • Page 34: Summary

    When you complete the Setup Wizard, a configuration summary will display. Verify the configuration information of the Router and then click Apply to save your settings. 3Com recommends that you print this page for your records. Your Router is now configured and ready for use.
  • Page 35: Router Configuration

    OUTER ONFIGURATION Navigating This chapter describes all the screens available through the Router Through the Router configuration pages, and is provided as a reference. To get to the Configuration configuration pages, browse to the Router by entering the URL in the Pages location bar of your browser.
  • Page 36: Home

    5: R HAPTER OUTER ONFIGURATION Home Figure 20 Home Screen There are two buttons on this screen - Connect and Disconnect. These buttons allow you to manually connect or disconnect your router from your ISP’s service. LAN Setup Your Router is equipped with a DHCP server that will automatically assign IP addresses to each computer on your network.
  • Page 37: Lan Settings

    LAN Setup Specify the IP address Lease Time. Default = Forever Specify a local Domain Name. Default = NONE To make changes, click "LAN Settings" on the LAN tab to the left. The Router will also provide you with a list of all client computers connected to the network.
  • Page 38: Dhcp Client List

    5: R HAPTER OUTER ONFIGURATION 3 If you need to, you can change the range of addresses given out by the Router by changing the IP Pool Starting Address and IP Pool Ending Address fields. 4 Specify the DHCP Lease time by selecting the required value from the Lease Time drop down list.
  • Page 39: Internet Wan

    Internet WAN client’s network card. As you connect more devices, the client list will grow to a maximum number of 253 clients. Internet WAN From these pages you can configure the settings for your DSL connection. Connection Type Figure 23 Connection Type Screen The Connection Type screen is used to configured the parameters for your DSL connection.
  • Page 40: Pppoe

    5: R HAPTER OUTER ONFIGURATION PPPoE Figure 24 PPPoE Settings Screen 1 Enter the User Name assigned to you by your ISP in the User Name field. 2 Enter the Password assigned to you by your ISP in the Password field. Re-enter your password in the Retype Password field.
  • Page 41: Pppoa

    Internet WAN Enter a value of 0 to disable this timeout. 8 Click Apply Changes. PPPoA Figure 25 PPPoA Settings Screen 1 Enter the User Name assigned to you by your ISP in the User Name field. 2 Enter the Password assigned to you by your ISP in the Password field. Re-enter your password in the Retype Password field.
  • Page 42: Disable Internet Sharing

    5: R HAPTER OUTER ONFIGURATION checked, then you will have to manually connect and disconnect using the buttons on the Home Screen (see page 35). 7 If you want your Router to automatically disconnect from the Internet automatically after a period of inactivity, specify a time in the Idle Time (Minutes) field.
  • Page 43: Multiple Protocol Over Atm

    Internet WAN Multiple Protocol Figure 27 Mutli Protocol over ATM Screen over ATM 1 Enter the IP address, Subnet Mask and Default Gateway information provided by your ISP into the IP address, Subnet Mask and Default Route fields. 2 Enter the VPI and VCI parameters provided to you by your ISP in the VPI and VCI fields.
  • Page 44: Dns

    5: R HAPTER OUTER ONFIGURATION Figure 28 DNS Screen If your ISP provided you with specific DNS addresses to us, enter them into the appropriate fields on this screen and press Apply Changes. Many ISP's do not require you to enter this information into the Router. If you are using a Static IP connection type, then you may need to enter a specific DNS address and secondary DNS address for your connection to work properly.
  • Page 45: Channel And Ssid

    Wireless This screen allows you to enable/disable the wireless section of your LAN. When disabled, no wireless PCs can gain access to either the Internet or other PCs on your Wired or Wireless LAN through this Router. Select the required setting, and press Apply Changes. Channel and SSID Figure 30 Channel and SSID Screen 1 Set the Wireless Channel you want to use from the Wireless Channel...
  • Page 46: Security

    5: R HAPTER OUTER ONFIGURATION of many wireless network adapters on the market today. It will scan the "air" for any available network and allow the computer to select the network from the site survey. Turning off the broadcast of the SSID will help increase security.
  • Page 47: Disabled

    Wireless WPA (with RADIUS Server) (see page Select the required value from the drop down list, and press Apply Changes. Disabled In this mode, wireless transmissions will not be encrypted, and will be visible to everyone. However, when setting up or debugging wireless networks it is often useful to use this security mode.
  • Page 48: 128-bit Wep

    5: R HAPTER OUTER ONFIGURATION numbers. The key must be between 8 and 63 characters long and can include spaces and symbols. Note that each client that connects to the network must use the same key. 2 Press Apply Changes. 128-bit WEP Figure 33 128-bit WEP Screen WEP is the basic mechanism to transmit your data securely over the...
  • Page 49: 64-bit Wep

    Wireless 64-bit WEP Figure 34 64-bit WEP Screen WEP is the basic mechanism to transmit your data securely over the wireless network. Matching encryption keys must be setup on your Router and wireless client devices to use WEP. 1 You can either enter your WEP key as 5 pairs of hex digits (0-9, A-F), or enter a memorable passphrase in the Passphrase box, and then press the Generate button to generate the hex keys from the passphrase.
  • Page 50: Wpa (with Radius Server)

    5: R HAPTER OUTER ONFIGURATION WPA (with RADIUS Figure 35 WPA (with RADIUS Server) Screen Server) WPA (Wireless Protected Access) provides dynamic key changes and constitutes the best security solution. In a wireless network where not all devices support WPA, WEP (Wired Equivalent Privacy) should be used. Wireless Protected Access using a server to distribute keys to the clients: This option requires that a Radius server is running on the network.
  • Page 51: Firewall

    Firewall Firewall Figure 36 Firewall Screen Your Router is equipped with a firewall that will protect your network from a wide array of common hacker attacks including Ping of Death (PoD) and Denial of Service (DoS) attacks. You can turn the firewall function off if needed.
  • Page 52: Application Gateways

    5: R HAPTER OUTER ONFIGURATION Application Figure 37 Application Gateways Screen Gateways Application Gateways let you specify specific ports to be open for specific applications to work properly with the Network Address Translation (NAT) feature of the Router. A list of popular applications has been included to choose from. Select your application from the drop-down list at the top of the screen.
  • Page 53: Virtual Servers

    Firewall If your application is not here, you will need to check with the application vendor to determine which ports need to be configured. You can manually input this port information into the Router.To do this: 1 Specify the trigger port (the one used by the application when it is initialized) in the Trigger Port column, and specify whether the trigger is TCP or UDP.
  • Page 54: Client Ip Filters

    5: R HAPTER OUTER ONFIGURATION computers are protected by a firewall, machines from the Internet cannot get to them because they cannot be 'seen'. If you need to configure the Virtual Server function for a specific application, you will need to contact the application vendor to find out which port settings you need.
  • Page 55 Firewall Access Control allows users to define the traffic type permitted or not-permitted to the Internet. This screen allows you to enable or disable all Access Control rules. Select the appropriate Enable Filtering Funciton radio button, and press Apply Changes to save the settings. To edit or delete specific Access Control rules, click on the Edit or Delete links for the appropriate access control rule.
  • Page 56: Url Blocking

    5: R HAPTER OUTER ONFIGURATION 4 Select the services to be blocked. A list of popular services is given on this screen, to block a particular service place a check in the appropriate Blocking checkbox. If the service to be restricted is not listed on the screen, you can enter a custom range of ports at the bottom of the page, under User Defined Service.
  • Page 57: Schedule Rule

    Firewall For example, entering a keyword of “xxx” would block access to any URL that contains the string “xxx”. To complete this configuration, you will need to create or modify an access rule in the "Access Control" section (see “Access Control” page 54).
  • Page 58 5: R HAPTER OUTER ONFIGURATION Figure 43 Add Schedule Rule Screen 2 Enter a name and comment for the schedule rule in the Name and Comment fields. 3 Specify the schedule rules for the required days and times - note that all times should be in 24 hour format.
  • Page 59: Mac Address Filtering

    Firewall MAC Address Figure 44 MAC Address Filtering Screen Filtering The MAC Address Filter is a powerful security feature that allows you to specify which computers are allowed on the Wired or Wireless network. Any computer attempting to access the network that is not specified in the filter list will be denied access.
  • Page 60: Dmz

    5: R HAPTER OUTER ONFIGURATION Figure 45 DMZ Screen If you have a client PC that cannot run an Internet application properly from behind the firewall, you can open the client up to unrestricted two-way Internet access. This may be necessary if the NAT feature is causing problems with an application such as a game or video conferencing application.
  • Page 61: Wan Ping Blocking

    Firewall WAN Ping Blocking Figure 46 WAN Ping Blocking Screen Computer hackers use what is known as "Pinging" to find potential victims on the Internet. By pinging a specific IP address and receiving a response from the IP address, a hacker can determine that something of interest might be there.
  • Page 62: Utilities

    5: R HAPTER OUTER ONFIGURATION Press Refresh to update the display. Press Clear to clear the log (note that all current entries will be erased). Press Save to save the log to disk in a text file. When prompted for a location to save the file to, specify a filename and location, and then press OK.
  • Page 63: Restore Factory Default

    Utilities Restore Factory Figure 49 Restore Factory Default Screen Default Using this option will restore all of the settings in the Router to the factory (default) settings. It is recommended that you backup your settings before you restore all of the defaults. To restore the factory default settings, press the Restore Defaults button.
  • Page 64: Restore Previous Settings

    Please select the configuration file and press the Restore button. Firmware Update Figure 52 Firmware Update Screen From time to time 3Com may release new versions of the Routers firmware. Firmware updates contain improvements and fixes to problems that may have existed.
  • Page 65: System Settings

    System Settings Figure 53 System Settings Screen Administrator The Router ships with a default password of 1234admin. 3Com Password recommends that you change the password for added security. Keep your password in a safe place as you will need this password to log into the router in the future.
  • Page 66: Time And Time Zone

    5: R HAPTER OUTER ONFIGURATION The login timeout option allows you to set the period of time that you can be logged into the Router's setup interface. The timer starts when there is no activity. For example, you have made some changes in the setup interface, then left your computer alone without clicking "Logout".
  • Page 67: Universal Plug And Play

    Utilities have a single IP address and you turn NAT off, the computers on your network will not be able to access the Internet. Other problems may also occur. Turning off NAT will not affect your firewall functions. Universal Plug and Universal Plug and Play is a technology that offer seamless operation of Play voice messaging, video messaging, games, and other applications that...
  • Page 69: Basic Connection Checks

    ROUBLESHOOTING Basic Connection Check that the Router is connected to your computers and to the Checks telephone line, and that all the equipment is powered on. Check that the LAN Status and DSL LEDs on the Router are illuminated, and that any corresponding LEDs on the NIC are also illuminated.
  • Page 70: Connecting To The Internet

    6: T HAPTER ROUBLESHOOTING If you cannot browse to the Router, use the winipcfg utility in Windows 95/98/ME to verify that your computer has received the correct address information from the Router. From the Start menu, choose Run and then enter winipcfg. Check that the computer has an IP address of the form (where xxx is in the range 2-254), the subnet mask is, and the default Router is (the address of the Gateway).
  • Page 71: Wireless Networking

    Wireless Networking 4 Press and hold the Reset button on the rear panel (see “Rear Panel” page 15) for 5 seconds. 5 The Router will restart, and when the start-up sequence has completed, browse to: and run the configuration wizard. You may need to restart your computer before you attempt this.
  • Page 72: Recovering From Corrupted Software

    6: T HAPTER ROUBLESHOOTING Additionally consider moving the wireless computer closer to the Router to confirm that the building structure or fittings are not adversely affecting the connectivity. If this resolves the problem consider relocating the Wireless computer or the Router, or trying a different channel on the Router.
  • Page 73: Frequently Asked Questions

    Ensure that one of your computers has a copy of the new software image file stored on its hard disk or available on CD-ROM. The latest software is available on 3Com’s Web site at: 1 Remove power from the Router and disconnect the telephone line and all your computers, except for the one computer with the software image.
  • Page 74 VPN hosts on your LAN that clients elsewhere on the Internet can connect to, but this is not a recommended configuration. Where can I download software updates for the Router? Updates to the Router software are posted on the 3Com support web site, accessible by visiting:
  • Page 75: Aip Addressing

    IP A DDRESSING The Internet The Internet protocol suite consists of a well-defined set of Protocol Suite communications protocols and several standard application protocols. Transmission Control Protocol/Internet Protocol (TCP/IP) is probably the most widely known and is a combination of two of the protocols (IP and TCP) working together.
  • Page 76 A: IP A PPENDIX DDRESSING For your network to work correctly, all devices on the network must have: The same sub-network address. The same subnet mask. The only value that will be different is the specific host device number. This value must always be unique. An example IP address is ‘’.
  • Page 77: How Does A Device Obtain An Ip Address And Subnet Mask

    How does a Device Obtain an IP Address and Subnet Mask? This type of IP Address operates on a subnet mask of ‘’. Table 4 for an example about how a network (only four computers represented) and a Router might be configured. Table 4 IP Addressing and Subnet Masking Device IP Address...
  • Page 78 A: IP A PPENDIX DDRESSING an IP address at random from the industry standard subnet of 169.254.x.x (with a subnet mask of If two devices allocate themselves the same address, the conflict is detected and one of the devices allocates itself a new address. Automatic IP addressing support was introduced by Microsoft in the Windows 98 operating system and is also supported in Windows 2000.
  • Page 79: T Echnical S Pecifications

    ECHNICAL PECIFICATIONS This section lists the technical specifications for the ADSL 11g Wireless Router. ADSL 11g Wireless Interfaces Router DSL connection LAN connection — four 10Mbps/100Mbps dual speed Ethernet ports (10BASE-T/100BASE-TX) WLAN Interfaces Standard IEEE 802.11g, Direct Sequence Spread Spectrum (DSSS) Transmission rate: 54Mbps, automatic fallback to 48, 36, 24, 18, 12, or 6 Mbps Maximum channels: 14...
  • Page 80 B: T PPENDIX ECHNICAL PECIFICATIONS Maximum clients: 128 O/P Power 18dBm Operating Temperature 0 °C to 40 °C (32 °F to 105 °F) Power 7VA, 23.9 BThU/hr Humidity 0 % to 90 % (non-condensing) humidity Dimensions Width = 220 mm (8.7 in.) Depth = 133 mm (5.2 in.) Height = 38 mm (1.5 in.) Weight...
  • Page 81 System Requirements Operating Systems The Router will support the following Operating Systems: Windows 95/98 Windows NT 4.0 Windows ME Windows 2000 Windows XP Mac OS 8.5 or higher Unix Ethernet Performance The Router complies to the IEEE 802.3i, u and x specifications. Cable Specifications The Router supports the following cable types and maximum lengths: Category 3 (Ethernet) or Category 5 (Fast Ethernet or Dual Speed...
  • Page 83 AFETY NFORMATION Important Safety Information WARNING: Warnings contain directions that you must follow for your personal safety. Follow all directions carefully. You must read the following safety information carefully before you install or remove the unit: WARNING: The Router generates and uses radio frequency (rf) energy. In some environments, the use of rf energy is not permitted.
  • Page 84: Wichtige Sicherheitshinweise

    C: S PPENDIX AFETY NFORMATION WARNING: RJ-45 ports. These are shielded RJ-45 data sockets. They cannot be used as telephone sockets. Only connect RJ-45 data connectors to these sockets. Wichtige Sicherheitshinweise VORSICHT: Warnhinweise enthalten Anweisungen, die Sie zu Ihrer eigenen Sicherheit befolgen müssen. Alle Anweisungen sind sorgfältig zu befolgen.
  • Page 85 VORSICHT: Es sind keine von dem Benutzer zu ersetzende oder zu wartende Teile in dem Gerät vorhanden. Wenn Sie ein Problem mit dem Router haben, das nicht mittels der Fehleranalyse in dieser Anleitung behoben werden kann, setzen Sie sich mit Ihrem Lieferanten in Verbindung.
  • Page 86 C: S PPENDIX AFETY NFORMATION AVERTISSEMENT: L’appareil fonctionne à une tension extrêmement basse de sécurité qui est conforme à la norme CEI 60950. Ces conditions ne sont maintenues que si l'équipement auquel il est raccordé fonctionne dans les mêmes conditions. AVERTISSEMENT: Il n’y a pas de parties remplaceables par les utilisateurs ou entretenues par les utilisateurs à...
  • Page 87: End User Software License Agreement

    Subject to the restrictions set forth herein, the Software is licensed to be used on any workstation or any network server owned by or leased to you, for your internal use, provided that the Software is used only in connection with this 3Com product. You may reproduce and provide one (1) copy of the Software and Documentation for each such workstation or network server on which the Software is used as permitted hereunder.
  • Page 88 Software and Documentation, and may be amended only in a writing signed by both parties. Should you have any questions concerning this Agreement or if you desire to contact 3Com for any reason, please contact the 3Com subsidiary serving your country, or write: 3Com Corporation, 5500 Great America Parkway, P.O.
  • Page 89 LOSSARY 802.11b The IEEE specification for wireless Ethernet which allows speeds of up to 11 Mbps. The standard provides for 1, 2, 5.5 and 11 Mbps data rates. The rates will switch automatically depending on range and environment. 802.11g The IEEE specification for wireless Ethernet which allows speeds of up to 54 Mbps.
  • Page 90 98 will allocate itself an address if no DHCP server can be found. DNS Server Address DNS stands for Domain Name System, which allows Internet host computers to have a domain name (such as and one or more IP addresses (such as A DNS server keeps a database of...
  • Page 91 LOSSARY host computers and their respective domain names and IP addresses, so that when a domain name is requested (as in typing “” into your Internet browser), the user is sent to the proper IP address. The DNS server address used by the computers on your home network is the location of the DNS server your ISP has assigned.
  • Page 92 LOSSARY IEEE Institute of Electrical and Electronics Engineers. This American organization was founded in 1963 and sets standards for computers and communications. IETF Internet Engineering Task Force. An organization responsible for providing engineering solutions for TCP/IP networks. In the network management area, this group is responsible for the development of the SNMP protocol.
  • Page 93 LOSSARY MAC Address Media Access Control Address. Also called the hardware or physical address. A layer 2 address associated with a particular network device. Most devices that connect to a LAN have a MAC address assigned to them as they are used to identify other devices in a network. MAC addresses are 6 bytes long.
  • Page 94 LOSSARY Server A computer in a network that is shared by multiple end stations. Servers provide end stations with access to shared network services such as computer files and printer queues. SSID Service Set Identifier. Some vendors of wireless products use SSID interchangeably with ESSID.
  • Page 95 LOSSARY URL Filter A URL Filter is a feature of a firewall that allows it to stop its clients form browsing inappropriate Web sites. Wide Area Network. A network that connects computers located in geographically separate areas (for example, different buildings, cities, or countries).
  • Page 96 LOSSARY...
  • Page 97 NDEX Password 27 Addresses IP 75 PPPoE 26, 30, 31 Automatic Addressing 77 Reset to Factory Defaults 70 Cable Specifications 81 Channels 99 Conventions Safety Information 17 notice icons, About This Guide 8 Setup Wizard 27 text, About This Guide 8 Specifications technical 79 Static Addressing 77...
  • Page 98 NDEX...
  • Page 99 EGULATORY OTICES FOR THE ADSL 11 IRELESS OUTER Channels Use of the ADSL 11g Wireless Router is only authorized for the channels approved by each country. For proper installation, login to the management interface and select your country from the drop down list. Table 5 below details the channels permitted by the local regulatory agencies:...
  • Page 100 FCC Declaration of We declare under our sole responsibility that the Conformity Model: Description: 3CRADSL72 ADSL 11g Wireless Router to which this declaration relates, is in conformity with the following standards or other normative documents: ANSI C63.4-1992 Methods of Measurement...
  • Page 101 15.109 (g)Class B Radiated Emissions Limits Exposure to Radio Frequency Radiation: The radiated output power of the 3Com ADSL 11g Wireless Router is far below the FCC radio frequency exposure limits. Nevertheless, the 3Com ADSL 11g Wireless Router shall be used in such manner that the potential for human contact during normal operation is minimized.
  • Page 104 3Com Corporation, Corporate Headquarters, Copyright © 2003 3Com Corporation. All rights reserved. 5500 Great America Parkway, Santa Clara, 3Com and are registered trademarks of 3Com CA 95052-8145, USA. Corporation. All other company and product names may be trademarks of their respective companies.

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