I have 4 7941's that all have the same issue. They have previously been working ok, but when I unplug then replug them into the PoE the Headset and Mute lights are constantly lit, and the line lights flash green one after another. The Cisco boot logo does not come up.
I tried a factory reset, but it won't do that either.
Does anyone have any ideas? As the phones are only a couple of months old, Cisco simply RMA'd them, but I want to know why this is happening.