個々のケーブルを識別する - IntelliTone

Intellitone is designed to minimize bleed between Category 5+ cabling, which will enable users to discriminate between one cable and another very effectively. Under certain conditions the bleed between cables can be significant enough that discrimination is somewhat difficult.
 
Click here to open a PDF document which explains how to use Intellitone to discriminate between connections or cables which are very close together.  

See also:  Cable Toning Techniques