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Amanda RobersonAug 27, 2025
How to fix a Panasonic PBX extension that does not operate?
- DdustinbishopAug 27, 2025
To resolve the issue of an extension not operating on your Panasonic PBX, try the following: * Exchange the extension card with a known working one. * Check the connection between the PBX and the telephone, repairing it if necessary. * Ensure you're using a 2-wire cord. * For telephones with an A-A1 relay, set the switch to the "OUT" or "OFF" position. * Test the telephone on a known working extension port; if it still fails, replace the telephone. * Verify that the PSU is the correct type and replace it if needed. The cause may be a bad extension card, a faulty connection, an incorrect telephone relay setting, a bad telephone, or the wrong type of PSU.


















