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Question by pimcs pakistan posted 21 May 2003 | | Cat5 confusion | hello
is there any difference between the 10 base cabling and 100 base cabling. imean for both i can use T568A is there is something different scheme for 10base network. my other problem is that if T568A and B use only 2 pairs , so what's the purpose of the remaining 2 pairs. if i cut the remaining pairs before the connector , will my cable work ???? if not then why ?????
waiting
pimcs |  |
Answer by Dmitri Abaimov posted 22 May 2003 | Dear pimcs,
The difference is that 10BASE-T will work on CAT3 cabling, while 100BASE-TX will work on CAT5E or above. The cables are different in terms of their electrical characteristics, not number of pairs (with CAT5E being better than CAT3 obviously). Both T568A and T568B describe required layouts for all four pairs, not just two.
Do not cut remaining pairs before the connector: although 100BASE-TX uses only two pairs, later you may decide to switch to 1000BASE-T, which require all four pairs.
Sincerely,
Dmitri Abaimov, RCDD
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