The CableTracker Network Tone and Probe Kit model CTK1015 is designed for network managers and technicians. Toning an active LAN circuit can disrupt network traffic and is difficult to track due to cable twist and tone bleed. The CableTracker Network Tone and Probe Kit features a Port ID function that blinks the link light verifying cable connectivity. This feature also provides a simple and effective method to identify switch or hub port assignments on active networks. Three different blink rates are provided to ensure compatibility with equipment from a wide range of manufacturers. Traditional toning with two different tone frequencies and patterns is provided for non-active circuit tracing.