If it normally works and you are starting to get failures, could be the unit is failing. If memory serves me, HP used to stress going directly to wall with power and using 2 wire phone line only. ( Many phone cords have 4 to 6 lines when viewed on end connectors ) If these check out and unit is still failing, it's time to replace it. Try Ebay for cheap replacement. You could also google to find how to reset memory or nvram but that sets all settings, phonebooks, etc back to factory. Good Luck T
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