I have a cisco 2960-x series switch (ver. 15.2 (2)E4) that has three ports giving off "Power Controller reports power Tstart error detected" errors. All three ports had poe phones connected to them that stopped powering up after the errors started happening on the switch. I verified that there was enough wattage available on the switch, which there was, so I am unsure why those ports are having issues.
Has anyone seen this before and/or have any thoughts for a fix?