Will not work without a Panasonic phone system controller that supports the NT series phones. Will not work on a plain phone line. It does not work on a digital (XDP, KX-TD816=no, KX-TD1232=no) system. This is a VoIP phone. It will require programming to work.
A black Panasonic KX-NT343 hybrid display phone.
Cleaned. 90 day warranty. Pulled from service but only testing is to verify it boots from PoE then searches for the host controller.