Telecommunications conductor wire pair test circuits are provided. The test circuits include a switch electrically coupled to the wire pair. The switch has a first position in which the test circuit provides an open circuit across the wires of the wire pair and a second position in which the test circuit...http://www.google.de/patents/US6614881?utm_source=gb-gplus-sharePatent US6614881 - Remotely operable telecommunications conductor test circuit and method for using the same
