Troubleshooting and Maintenance | 3Com Dual 56K instruction

136CHAPTER 10: TROUBLESHOOTING AND MAINTENANCE

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3Com Dual 56K manual Troubleshooting and Maintenance

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Dual 56K LAN Modem 3Com Corporation Bayfront PlazaSanta Clara, California 95052-8145 Important Safety Information Important Safety InformationWichtige Sicherheits-Informatio nen Important Notice de Securite Medidas de Seguridad Importantes Additional Safety Information Informazioni Importanti per la Sicurezza If the unit shows signs of a distinct change in performance Table of Contents Installing the Dual 56K LAN Modem Networking Primer Page Shows you where to ﬁnd speciﬁc information in this guide About this Guide Conventions List conventions that are used throughout this guideIcon Alerts you to Convention Description Introduction Introduction Applications Local Networking with Local Networking and Dial-out Access with Dial-in Support Internet and a Private Network Description Color Description Front Panel LED Indicator Deﬁnitions Features Error Control and Data Compression Bandwidth ManagementRemote Management Protocols Upgradeability DiagnosticsWarranty Modulation Schemes UAL 56K LAN M Odem Using the Modem Wan Side The Two56K Modems Channels Using the Modem Channels 192 Simultaneous Dial-in and Dial-out Connections Locations two different locations, as shown in Figure Possible, as shown in Figure Understanding Multilink PPPOther Line Usage Options Through an RS-232 serial COM port 56K LAN Modem’s Manual Call Control Private Networks Support for VirtualVPNs Dual 56K LAN Modem Functionality Description Before YOU Begin Package ContentsBefore You Begin Before YOU Begin TCP/IP Dialog Box for Macintosh Computers Click Add Select Network Component Type dialog box appears Select Protocol and then click Add You may need your Windows NT 4.0 installation CD-ROM Select Network Protocol dialog box appears Select the Protocols tab, as shown in Figure Select TCP/IP Protocol, and then click OK Following message appears Dhcp Message Box Click Install Double click Local Area ConnectionClick Properties Select Internet Protocol TCP/IP and then click Add Computer If You Have Setting Up YourStatic IP Address Set Up Steps for Statically Conﬁgured Workstation For Windows 95 and 98 Users Click OK From the Start menu, select Settings and then Control PanelFor Windows 2000 Users For Macintosh Users For Windows NT 4.0 UsersFrom the Apple menu, select Control Panels, and then TCP/IP Installing the Dual 56K LAN Modem Installation You may need to use a country-speciﬁc phone adapter optional Pass-through Phone ports Power Cable Connection Installing the Dual 56K LAN Modem Configuring the Dual 56K LAN Modem for Internet Access Main Steps for Typical Conﬁguration Welcome message appears, as shown in Figure Initial Conﬁguration Welcome Window Set Password Window Click Continue ISP Wizard appears Click Continue Changing the LAN Modem IP Address for Static IP Users LAN Modem Support Web Site LAN Modem Main Configuration Links From the Illustration You may wish to bookmark this page for easy future access Providers Connecting an External Hub to the Dual 56K LAN Modem 10-User Shared WAN Connection Using an 8-Port Ethernet Hub 10BASE-T Hub-to-LAN Modem Connection Configuring the Dual 56K LAN Modem for Internet Access Conﬁguration Before You StartDisplayed on your computer Click Continue If do not wish to enter a Password, leave the ﬁelds empty Page Service Provider Selection Window Private Network Parameters Window IP Address and Subnet mask ﬁelds are mandatory Under Miscellaneous, make the following selectionsPage Setting Up Additional Service Provider Proﬁles Dual 56K LAN Modem Main Conﬁguration Providers Connecting an External Hub to the Dual 56K LAN Modem LAN ModemSupport Web Site Modem as they become available Advanced Configuration Additional ServiceAdvanced Conﬁguration Conﬁguring Advanced Configuration Internet Service Provider Parameters window appears Advanced Configuration Click Submit Editing Service Associating ServiceProvider Proﬁles Providers with Using a Connection Script Connection Script Command Syntax Click Set Port ButtonsClick Transmit Additional Conﬁguration Buttons Connection Script Example Conﬁguring LAN ParametersEthernet Parameters window is shown in Figure Parameters Name Enable Dhcp Server NetBIOS FilteringLocal Domain Name Parameters Modem Control Modem Control Parameter Description Controls Data Call Parameters Window Timeout Values Bandwidth on Demand Parameters Outgoing Call Control Call Parameters Advanced Configuration Password Reserving DhcpAddresses Changing Your Advanced Configuration Password Protection Using SelectiveConﬁguring the LAN Modem from a Remote Location Administration Password Conﬁguring the LAN Modem Remotely via Another LAN Modem Analog Modem Click TCP/IP SettingsDouble-clickMake New Connection Click Check for Upgrades Configuring the Dual 56K LAN Modem for DIAL-IN Support BasicsServer-side LAN Modem and a client-side device Adapter or an Isdn LAN Modem Configuring the Dual 56K LAN Modem for DIAL-IN Support Single User Dial-in from an Analog Modem LAN Modem Site-to-Site Dial-in Proﬁle Type Click Dial-in User Before You Start the Conﬁguration Click Dial-in Global Dial-In Global Parameters window opens, as shown in FigurePage Dial-in Wizard for Single User Dial-in Dial-In Wizard Proﬁle Type Selection Window Dial-In Wizard Password window appears, as shown in Figure Dial-In Wizard Password Window Dial-In Wizard Internet Service Provider Window Modem Site-to-Site Dial-in Dial-In Wizard Password Window Dial-In Wizard Site Assignment Window Dial-in Part II. Conﬁguring a Client Device for Dial-out Access Conﬁguring an Analog Modem for Dial-out Calling Conﬁguring a LAN Modem UsingModem LAN Creating a Private Network Service Provider Proﬁle Private Network Parameters Window Under DNS Addresses, leave these values blank Configuring the Dual 56K LAN Modem for DIAL-IN Support Dial-in User Selection Screen Dial-in Users Parameters Screen Callback Parameters WAN Parameters Placing a Call from a Client-side LAN Modem Disconnecting Calls Using the LAN ModemDesktop Manager Windows only Click Submit to save your changes Call Routing Among Service ProvidersClick Place Call Receiving Calls Click Make Call Manually Click Hangup Call Timers Minimum Call Duration Idle Timeout PLACING, Receiving and Disconnecting Calls Troubleshooting Maintenance Unauthorized opening of the unit will void the warrantyLAN Status LEDs to isolate problems Monitoring LEDs Evaluating Symptoms SolutionsSolutions Symptom Possible Cause Solution Windows 95 Windows 2000 and NTMacintosh Internet Explorer Click Workstations Click the Workstation Configuration tab Documentation/interop.html Web browser may be caching older pages Resetting the Dual 56K LAN Modem Finding MoreInformation Contacting Technical Description of System Statistics System Statistics Current Call Information Description Call InformationLast Call Information LAN Modem Clock SynchronizingCycled Synchronizing the LAN Modem Clock Troubleshooting and Maintenance Networking Primer What is a WAN? What is a LAN Modem? What is a network? Becomes Is written as Subnet Masking Appendix a Networking Primer What is a network? Appendix a Networking Primer Possible Limitations Appendix a Networking Primer FAX Modem Installing and Using the VirtualModem Application Modem Properties window opens Click Install ModemsClick Add to add the new modem Click the Virtual Fax Modem button Virtual Fax Modem Parameters page opens, as shown in Figure Usage Creating a Virtual Private Network VPN Tunnel Creating a VirtualPrivate Network VPN Tunnel Run Dial-Up Networking Click the Make a New Connection icon Factory Defaults Factory Defaults Appendix D Factory Defaults Specifications SpeciﬁcationsYear 2000 Compliance Refer to for the Dual 56K LAN Modem speciﬁcations Appendix E Specifications Glossary LZS Glossary Glossary 3Com Corporation Limited Lifetime Warranty OfﬁceConnect Dual 56K LAN Modem Warranties Exclusive Regulatory and Aproval Information FCC Declaration FCC Part 68 Compliance Page 167 TCP/IP 168