Kingston Technology KND2415TX manual What are the Guidelines for Proper Termination?

16 Appendix D Commonly Asked Questions

What are the Guidelines for Proper Termination?

It is important to maintain the twists of the cable as close to the termination on the outlet as possible, to avoid NEXT (Near End Cross Talk) and to maintain the transmissions characteristics of the Category. Category specications require that pair twisting be maintained to within the following distances from the outlet termination:

•Category 3 maximum allowed untwisting: 3 inches

•Category 4 maximum allowed untwisting: 1 inch

•Category 5 maximum allowed untwisting: 1/2 inch

Can I mix CAT 3 and CAT 5 cabling in the same building?

Yes, but keep in mind, you will not have CAT 5 performance. It is a good idea to keep the lines separated when installing any new lines. Use CAT 5 UTP cabling only.

Can a Four-Pair CAT 5 cable support two 100BASE-TX devices?

Although only two pairs are used in the standard four-pair CAT 5 UTP cable, it is not recommended because it exceeds the specications outlined by IEEE 802.3u.

Kingston Technology Company KND2415TX User’s Guide - Rev. A00