The PairMaster gives the user the ability to verify three basic requirements for LAN cabling. First, the PairMaster will check the point to point wiring. These tests,commonly called wire-mapping, tell the user whether or not the individual conductors within the cable are wired correctly at both ends. Another test, NEXT (Near End Crosstalk), checks each pairs. The Third major feature is the ability to identify which cable in the bundle is connected to the PairMaster. In a typical LAN Installation, the individual workstation are connected to a central wiring hub. By connecting the sixteen Remote identifiers to the workstation ends of the cables, the user can easily document the network topology from one location.