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3Com 5124M-TPCL Connecting Twisted Pair Cables, Follow these steps to connect twisted pair cables

Models: 5124M-TP 5124M-TPCL

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Connecting Twisted Pair Cables

Follow these steps to connect twisted pair cables:

1.Connect cables at the active concentrator location.

2.Connect transceivers.

Refer to the ONline System Concentrator Installation and Operation Guide for more information about the ONline System Concentrator connections.

A - 12 ONline Ethernet 24-Port 10BASE-T Module Installation Guide

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3Com 5124M-TPCL manual Connecting Twisted Pair Cables, A - 12 ONline Ethernet 24-Port 10BASE-T Module Installation Guide

Contents

3Com Corporation 118 Turnpike Road Southborough, MA U.S.A 508 FAX 508 ONline Ethernet 24-Port 10BASE-T Module Installation GuideDocument Number Printed February Model Number 5124M-TPCL 5124M-TP Federal Communications Commission Notice Canadian Emissions RequirementsVDE Class B Compliance EN55022/CISPR22 ComplianceRestricted Rights Page Contents How to Use This GuideONline Ethernet 24-Port 10BASE-T Module Installation Guide Chapter 1 - IntroductionChapter 3 - Installing and Operating the Module vi ONline Ethernet 24-Port 10BASE-T Module Installation GuideChapter 4 - Troubleshooting Appendix A - SpecificationsAppendix B - Technical Support Indexviii ONline Ethernet 24-Port 10BASE-T Module Installation Guide Figures ONline Ethernet 24-Port 10BASE-T Module Installation Guidex ONline Ethernet 24-Port 10BASE-T Module Installation Guide Tables ONline Ethernet 24-Port 10BASE-T Module Installation GuidePage ONline Ethernet 24-Port 10BASE-T Module Installation Guide How to Use This GuideAudience xiv ONline Ethernet 24-Port 10BASE-T Module Installation Guide Structure of This GuideDocument Conventions ONline Ethernet 24-Port 10BASE-T Module Installation GuideConvention Indicatesxvi ONline Ethernet 24-Port 10BASE-T Module Installation Guide Related Documents6-Slot ONline System Concentrator Installation and Operation 3Com DocumentsReference Documents ONline Ethernet 24-Port 10BASE-T Module Installation GuidePage Introduction 1 1 IntroductionEthernet 24-Port 10BASE-T Module Description Module Features 1 - 2 ONline Ethernet 24-Port 10BASE-T Module Installation GuideIntroduction 1 Model Number 5124M-TPCL FeaturesBank Switching Capability Theory of Operation Model Number 5124M-TP Features1 - 4 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Figure 1-1. Typical 24-Port Module Configuration Introduction 1End Nodes ConcentratorPage Designing and Expanding the Network 2 2 Designing and Expanding the NetworkUnderstanding the General Rules Rules for Configuring a Network2 - 2 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Table 2-1. Seven Basic Network Rules RuleDefinition Recommendations/Notes2 - 4 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Table 2-1. Seven Basic Network Rules ContinuedThe fiber link distances Designing and Expanding the Network 2Table 2-2. LAN Product Equivalent Distances 2 - 6 ONline Ethernet 24-Port 10BASE-T Module Installation GuideLAN Equivalence Designing and Expanding the Network 2 Choosing a Network Backbone Cabling StructureTable 2-2. LAN Product Equivalent Distances Continued Figure 2-1. Star-Wiring Configuration Building a Network Star Configuration2 - 8 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Designing and Expanding the Network 2 Building a Network Serial ConfigurationFigure 2-2. Serial Configuration Fiber Backbone, 10BASE-T To-The-Desk 24-Port Module Configurations2 - 10 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Example Sample Configuration Distance Calculation Designing and Expanding the Network 22 - 12 ONline Ethernet 24-Port 10BASE-T Module Installation Guide 10BASE-T Backbone, 10BASE-T To-The-DeskFigure 2-4. Unshielded Twisted Pair Network Using 24-Port Modules Designing and Expanding the Network 22 - 14 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Using Patch PanelsEstablishing Fault-Tolerant Configurations Setting Port Redundancy Setting Backbone RedundancyConfiguring Ports for Fault Tolerance Designing and Expanding the Network 22 - 16 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Redundant Twisted Pair BackboneLink failure Port partition Designing and Expanding the Network 2Page 3 Installing and Operating the Module Installing and Operating the Module 3Precautionary Procedures Quick Installation3 - 2 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Table 3-1. Procedures for Completing InstallationEstablish connections from the 24-Port Table 3-1. Procedures for Completing InstallationInstalling and Operating the Module 3 3 - 4 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Unpacking ProceduresSetting the DIP Switches DIP Switch Overview Installing and Operating the Module 33 - 6 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Figure 3-1. Model 5124M-TPCL and Model 5124M-TP DIP Switch LocationDIP Switch Description Installing and Operating the Module 33 - 8 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Table 3-2. DIP Switch SettingsDIP Switch Setting DefaultTable 3-3. Channel Network Select DIP Switch Settings DIP SwitchDIP Switch Setting CONNInstalling the Module 3 - 10 ONline Ethernet 24-Port 10BASE-T Module Installation GuideFigure 3-2. Installing a 24-Port Module Model Number 5124M-TPCL Installing and Operating the Module 33 - 12 ONline Ethernet 24-Port 10BASE-T Module Installation Guide 7. Attach the other ends of the cables to any of the followingA 10BASE-T transceiver A patch panel A 10BASE-T adapter card Figure 3-3. 24-Port Module Cable Connection Model Number 5124M-TPCLInstalling and Operating the Module 3 Using 90 Cable ConnectorsInstalling the Cable Tie-Wrap Kit 3. Insert the tie-wrap through the opening on the tie-wrap bracket 3 - 14 ONline Ethernet 24-Port 10BASE-T Module Installation GuideFigure 3-4. Attaching the Tie-Wrap Bracket to the Module Securing 90 Cables to the Module Installing and Operating the Module 33 - 16 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Figure 3-6. Attaching Cables With 90 ConnectorsConfiguration in a Managed Environment Installing and Operating the Module 33 - 18 ONline Ethernet 24-Port 10BASE-T Module Installation Guide If Management is Not AvailableBefore Configuring the Module Enabling PortsEnabling Port Redundancy Installing and Operating the Module 3Selecting a Network 3 - 20 ONline Ethernet 24-Port 10BASE-T Module Installation GuideEnabling Link Integrity Enabling Remote Diagnostics Mode Installing and Operating the Module 3SET MODULE slot CONNECTOR1NETWORK ethernet1 SET PORT slot.port MODE remotediagnosticsSetting the Autopartition Threshold Value 3 - 22 ONline Ethernet 24-Port 10BASE-T Module Installation GuideInstalling and Operating the Module 3 Saving Module ConfigurationsShowing Module Configurations 3 - 24 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Show ModuleShow Port Installing and Operating the Module 33 - 26 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Gathering Network Statistics Installing and Operating the Module 3Selecting the Per-Port Counters Connector 3 - 28 ONline Ethernet 24-Port 10BASE-T Module Installation GuideMonitoring the Front Panel Installing and Operating the Module 3Figure 3-7. 24-Port Module Faceplate and ONline System Concentrator Model Number 5124M-TPCL3 - 30 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Figure 3-8 shows the location of the LEDs on Model Number 5124M-TPInstalling and Operating the Module 3 Table 3-4. 24-Port Module LED InterpretationsLED Name ColorVerifying LED and Network Assignments Using the LED Check Button3 - 32 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Network Configuration Installing and Operating the Module 3Table 3-5. Network Check Codes LED StatePage 4 Troubleshooting Troubleshooting 44 - 2 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Troubleshooting Using the Port Status and Port Activity LEDsTroubleshooting Using the Port Status LEDs Table 4-1. Troubleshooting Using the Port Status LEDs Continued Troubleshooting 4LED State IndicationTechnical Assistance Troubleshooting Using the Port Activity LEDs4 - 4 ONline Ethernet 24-Port 10BASE-T Module Installation Guide A Specifications Specifications AThis appendix contains the following sections General Specifications Power Specifications Environmental SpecificationsTable A-1. 24-Port Module General Specifications General SpecificationsA - 2 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Power Specifications Table A-1. 24-Port Module General Specifications ContinuedTable A-2. 24-Port Module Power Specifications Specifications AEnvironmental Specifications A - 4 ONline Ethernet 24-Port 10BASE-T Module Installation GuideTable A-3. 24-Port Module Fuse Specifications Table A-4. 24-Port Module Environmental SpecificationsMechanical Specifications Twisted Pair Cable and Connector SpecificationsTable A-5. 24-Port Module Mechanical Specifications Specifications ATable A-6. IBM Twisted Pair Cable Specifications Twisted Pair Cable SpecificationsA - 6 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Specifications A Twisted Pair Connector SpecificationsRJ-45 Connector Pinouts Figure A-1. 24-Port Module RJ-45 Connector Pinouts 50-Pin Connector PinoutsA - 8 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Figure A-2. 50-Pin Male and Female Connectors Specifications AA - 10 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Table A-7. 50-Pin Cable Pinouts and Port AssignmentsSpecifications A Table A-7. 50-Pin Cable Pinouts and Port Assignments ContinuedTX, + RX, +Connecting Twisted Pair Cables A - 12 ONline Ethernet 24-Port 10BASE-T Module Installation GuideFollow these steps to connect twisted pair cables 1. Connect cables at the active concentrator locationTechnical Support B B Technical SupportOn-line Technical Support B - 2 ONline Ethernet 24-Port 10BASE-T Module Installation Guide Support from Your Network SupplierEmail Technical Support World Wide Web SiteSupport from 3Com Technical Support BReturning Products for Repair Accessing the 3Com MIBB - 4 ONline Ethernet 24-Port 10BASE-T Module Installation Guide 3Com Technical Publications Technical Support BPage Index IndexNumerics Page Power, A-3 Star Configuration Star Topology Status LEDs Troubleshooting Usingtechnical support, B-1 Troubleshooting Twisted Pair Cables Connecting, A-12