Case 6401 - User Manual

Questions and Answers

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Daniel PatelAug 1, 2025
What to do if the Case 6401 Network Router fails the ADSL synchronization test?
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  fzhangAug 2, 2025
  If the ADSL synchronization test fails on your Case Network Router, ensure the phone line is connected to the 6401 Router. After turning it on, wait at least one minute for a connection to be established, then re-run the diagnostic tests. Also, verify there's no DSL micro filter on the phone cord and that you're using the correct phone cord with four copper wires visible in the plug. If the issue suddenly occurs after a long period of proper functioning, there might be a problem with the DSL network, so wait 30 minutes to a couple of hours and then consider calling your ISP. Finally, try turning off the router, waiting 10 seconds, and then turning it back on; wait at least one minute before retrying.
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uandrewsAug 9, 2025
How to troubleshoot a failed eth0 connection on a Case 6401?
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  floresjuliaAug 9, 2025
  If the eth0 connection test fails on your Case Communications 6401 Rugged ADSL Router, rerun diagnostics. First, check the Ethernet cable from your computer or hub is securely connected to the LAN port; reseat the cable. Next, turn off the router, wait 10 seconds, and power it back on. If problems persist, reset the router to its default configuration by pressing the reset button for at least 5 seconds. After the router initializes, restart your browser and reconfigure the router.
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Ronald GarzaAug 16, 2025
How to troubleshoot a failed eth1 connection on a Case 6401 Network Router?
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  william36Aug 16, 2025
  If the eth1 connection test fails on your Case Communications 6401 Rugged ADSL Router, rerun diagnostics. First, check the Ethernet cable from your computer or hub is securely connected to the LAN port; reseat the cable. Next, turn off the router, wait 10 seconds, and power it back on. If problems persist, reset the router to its default configuration by pressing the reset button for at least 5 seconds. After the router initializes, restart your browser and reconfigure the router.
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darlenemurrayAug 25, 2025
How to troubleshoot a failed eth2 connection on a Case Network Router?
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  imcdonaldAug 25, 2025
  If the eth2 connection test fails on your Case Communications 6401 Rugged ADSL Router, rerun diagnostics. First, check the Ethernet cable from your computer or hub is securely connected to the LAN port; reseat the cable. Next, turn off the router, wait 10 seconds, and power it back on. If problems persist, reset the router to its default configuration by pressing the reset button for at least 5 seconds. After the router initializes, restart your browser and reconfigure the router.