I've got a collection of CISCO 7962 IP Phones powered by POE. On some of them I plug them in to our POE switch and I get an error that the Ethernet cable is unplugged. That strikes me as strange seeing as the power comes from the switch it's not attached to.
Phones are brand new. I have several that are doing this on the network but not all.
Switch is pretty well used.
Thoughts and suggestions are appreciated.