Issue: The phone does not power on or display any signs of activity. Solution:
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Ensure the power adapter is securely connected to both the phone and a functional power outlet.
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If using Power over Ethernet (PoE), verify that the Ethernet cable is connected to a PoE-enabled port on a switch or injector.
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Try a different power adapter or Ethernet port to rule out hardware issues.
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Inspect the phone for any visible damage or signs of wear.