Abstract: Devices, methods and systems for assessing telecommunications wiring between a first plurality of terminals and a second plurality of terminals are disclosed. A system includes a first device and a second device. The first device can be in electrical communication with the first plurality terminals to listen for terminal identification data that is receivable on each of the first plurality of terminals, wherein the device is configured to decode, for each terminal of the plurality of terminals, identification data that is specific to a single terminal of the second plurality of terminals. The second device is a sender device configured to generate different signals for respective terminals of the second plurality terminals, each signal encoding different terminal identification data.