I have a Catalyst 4506 switch and have the following issue. A month ago I had a power supply failure and that caused about 10 phones to stop working as whoever spec'ed the power supplies did it incorrectly and the power supplies would not support all the phones on one power supply. So when the failure happened we moved the 10 problem phones over to another switch. We have since replaced the power supply and want to move the users back to their switch. When we do this and try and return them to their orignal interfaces nothing happens but if I connect them to another interface they work fine. I checked the int's to make sure they were not shutdown, I even did a shiut then a no shut and nothing. I did a show power and all shows good. Is there anything I should be doning or checking to track down this problem?