3Com 3CNJ205 manual Troubleshooting

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Troubleshooting

If you encounter problems with the NJ205 IntelliJack:

Verify the IntelliJack is receiving power by viewing the Power LED (it should be on). If the Power LED is not on, make sure that:

(If using Power Over Ethernet) the other end of the network cable is plugged into a switch on the network that has Power Over Ethernet integrated into it, or one that feeds into an external midspan power supply that supports Power Over Ethernet.

(If using a local power supply) the power supply is plugged into the IntelliJack and into a working electrical outlet.

Verify the IntelliJack is connected to the network properly by viewing the Link LED (it should be on). If the Link LED is not on, make sure the network cable:

Is terminated properly. Refer to the connector manufacturer’s instructions for terminating the cable. Be sure to test the connector and verify it is working.

Has a valid connection to the network.

Adheres to proper length and cabling specifications for your network.

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Contents User Guide United States Government Legend Contents Specifications Default Settings Optional Components About the NJ205 IntelliJack About the NJ205 IntelliJack Package Contents About the NJ205 IntelliJack RJ-45 LED NJ205 DescriptionPower Setting up the Power Supply Installing the IntelliJackMounting the IntelliJack Ounting the IntelliJack Connecting Devices to the IntelliJack Checking the LEDs Installing the IntelliJack Installing the Configuration Managers System Requirements Installing the Local and Central Configuration ManagersInstalling the Local and Central Configuration Managers Installing the Configuration Managers Installing the Local and Central Configuration Managers Installing the Configuration Managers Installing the Local and Central Configuration Managers Installing the Configuration Managers Initializing the NJ205 IntelliJack Using the Local Configuration ManagerUsing the Local Configuration Manager Initializing the NJ205 IntelliJack Using the Local Configuration Manager Setting Advanced Options Using the Local Configuration Manager Discovering NJ205 Devices on Your Network Using the Central Configuration ManagerUsing the Central Configuration Manager Discovering NJ205 Devices on Your Network Using the Central Configuration Manager Discovering NJ205 Devices on Your Network Using the Central Configuration Manager Viewing Device Properties Using the Central Configuration Manager Viewing Device Properties Using the Central Configuration Manager Click on the Statistics tab Using the Central Configuration Manager Changing Device Configuration Using the Central Configuration Manager Changing Device Configuration Using the Central Configuration Manager Changing Device Configuration Using the Central Configuration Manager Select the Advanced tab for this window Mdix Changing Device Configuration Using the Central Configuration Manager Finding Computers Connected to NJ205 Devices Using the Central Configuration Manager Upgrading the NJ205 Firmware Using the Central Configuration Manager Upgrading the NJ205 Firmware Using the Central Configuration Manager Viewing Log Files Viewing and Canceling Scheduled Firmware Upgrades Specifications Performance Voice Over IP VoIP Compatible with VoIP Power forwarding Specifications Default Settings Vlan ID Optional Components 3Com Part Number Description Mounting Plates and SpacersPow er Options Using an Integrated Switch with Power Over Ethernet Using Ethernet Multi-port Midspan Power Supply Power Options Using a Single-port Ethernet Power Supply Using the 3Com Local Power Supply Using the 3Com Local Power Supply Power Options Installation Planning ANSI/TIA/EIA-568 Troubleshooting Event Message Description Solution Troubleshooting MatrixAmber LED Power is not being On Port 4 is Event Message Description Solution Online Technical Services Day Free Installation SupportWorld Wide Web Site 3Com Knowledgebase Web Services Support from Your Network Supplier Returning Products for Repair Support from 3ComCountry Telephone # 3Com Corporation Limited Warranty Limited Warranty and Regulatory Compliance InformationObtaining Warranty Service Limitation of Liability FCC Class a Verification Statement