3Com 5000 manual E1 120Ω balanced twisted pair cable

Page 41

Router to WAN Connection 41

The cable is attached with DB15 (male) connector for the router end, and with RJ45 connector for the network end. See the following figure:

Figure 28 E1 120Ω balanced twisted pair cable

You can also choose to attach both ends with RJ45 connectors, for extending two 120? balanced twisted pair cables.

E1 interface cable, coax connector assembly, network connector assembly and 75Ω-120Ωconverter all are optional.

Impedance inverter switch Impedance inverter switch is also available, through which you can choose the interface impedance value.

■Turn on the switch to change the interface impedance to 75Ω, and then you need to connect the 75Ω cable.

■Turn on the switch to change the interface impedance to 120Ω, and then you need to connect the 120Ω cable.

Figure 29 Extending E1 120Ω balanced twisted pair cable

1Observe the status of the Link LED for the E1 interface. ON means that a link is present. OFF means that no link is present and you need to check the line.

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Contents 3Com Router 5000 Family 3Com Corporation Campus Drive Marlborough Page Page Contents Register Your Product to Gain Service Benefits Introduction Software Maintenance under v 3.11 EnvironmentContents Contents About This Guide Documentation ConventionsRelated Pddtechpubscomments@3com.com CommentsAbout This Guide Router AboutEthernet access solution By extending SICs and MIMs, 3C13701 3Com RouterSystem description of 3Com Router Router 5012 IndicatorsSystem Description SLOT1~3 READY/ACTIVE 3C13751Ready LEDs of 3Com 5232 RouterNvram 3Com Router 5642 Front view of 3Com Router Router 5642 Indicators3C13755 Router 5642 Indicators 3Com Router 5682 Front view of 3Com Router 3C13759Router 5682 Indicators Introducing the Router 5000 Family Installing Installing the Router on a WorkbenchRouter in a Rack Standard rack, as shown in FigurePgnd Wire Power Cords Grounds and CablesAC Power Cord AC power supply Power CordAC Power Connector Recommended power outletAttributes of the console port Console Terminal Introduction to console portConsole cable Introduction to the Ethernet interface Router to LAN ConnectionEthernet cable Attributes of the Ethernet interfaceConnection Router to WANIntroduction to the AUX port AUX cableAttributes of the synchronous/asynchronous serial interface WAN Interface toTransmission rate and distance of V.24 RS232/V.35 cable Attributes of the synchronous/asynchronous serial interfaceDTE and DCE DTE cable assembly 24 RS232 DCE cable assembly35 DCE cable assembly 35 DTE cable assembly21 DTE cable assembly V24 DTE cable assembly 35 DCE cable assembly 75Ω unbalanced coax cable E1 interface to DSU/CSU120Ω balanced twisted pair cable E1 interface attributesE1 120Ω balanced twisted pair cable T1interface attributes T1 interface to DSU/CSUConnecting the router to a console terminal Setting up Configuration EnvironmentSetting the parameters for console terminal Startup RouterSetting the connection port in the local configuration Powering on the router Checking before power-onChecking/operating after power-on Press Enter and the screen will display Characteristics of the command line interface ConfigurationFundamentals Router InterfaceCommand line interface Starting and Configuring the Router Power System TroubleshootingTroubleshooting of nothing being displayed on the terminal ConsoleSdram Troubleshooting of repeated rebootApplication Software UpgradeTroubleshooting Introduction Configuration fileRouter manages three types of files Application image file main softwareBoot Menu Maintenance underSoftware EnvironmentDefault names and types of the boot files =MAIN B=BACKUP S=SECURE Flag set successfully Upgrading the application image Upgrading Software through XmodemDownload completed Upgrading the entire Boot ROM image Upgrading the application image through Ethernet Router Software Maintenance Software Maintenance under v 3.11 Environment Password loss. They can help you to set a new password Router PasswordDealing with a LossSolve Problems Online Service BenefitsRegister Your Product to GainServices WarrantyAccess Software Purchase ExtendedSupport and Repair Contact UsTelephone Technical Country Telephone Number US and Canada Telephone Technical Support and Repair Appendix a Obtaining Support for Your 3COM Products

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