Tahoe 4681 - User Manual

Questions and Answers

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jason16Jul 27, 2025
What to do if Tahoe 4681 Network Card modems are synchronized, but no data flows?
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  Gerald RandallJul 27, 2025
  If your Tahoe Network Card modems are synchronized but no data is flowing, here are a few things you can check: * If a transparent bridge is required, verify that it is enabled. * Make sure the Noise Margin (Signal/Noise Ratio) is greater than or equal to 6 dB. If the NMR is too low, decrease the line throughput. * Check the LAN cables. * Issue the 'mii reset' command to reset the Ethernet interface.
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Paul SotoAug 6, 2025
Why do Tahoe 4681 modems lose synchronization from time to time?
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  Oscar StricklandAug 6, 2025
  If your Tahoe Network Card modems are losing synchronization intermittently, consider the following: * Ensure the Noise Margin (Signal/Noise Ratio) is at least 6 dB. If it's lower, reduce the line throughput. * Try replacing the leased line, or at least parts of it, as there might be loose connectors, damaged insulation, or other temporary line issues. * Verify that both wires of a twisted pair are connected to the correct pins on the same line, since a telecom line consists of two twisted wires.
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Shane MendozaAug 15, 2025
How to fix asymmetrical throughputs on Tahoe 4681 Network Card?
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  Stephen GallagherAug 15, 2025
  To resolve issues with Tahoe Network Card data transfer speeds or asymmetrical throughputs, you can: 1. Check that the Noise Margin (Signal/Noise Ratio) is greater than or equal to 6 dB. Decrease the line throughput if the NMR is too low. 2. Ensure that the modem and the LAN device at the other end of the cable have the same Ethernet interface setting, using either autonegotiation or forced mode.