cable questions?

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 Question by zafar khan posted 20 Aug 2005
 cable questions?
how many wire seqence r there?
i know about stright wire, roll over and cross over

what r the wire seqence for this stright wire, rollover and cross wire?

when to use this, I mean when contenting to same type of component like connecting lan connection or connect to different like hub or routers?

i am trying hard for these answers on net but i am yet to get i hope this site will help me knowing this.

thanx.
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 Answer by Joseph Golan posted 21 Aug 2005
Dear zafar ,

There are many different types of wiring schemes and your question is too broad for me to answer here.
In addition to sequences there are standards and depending what part of the world you live in there may be additional ones.
Basically here in the USA there are the voice jacks which have variations and are listed in as "Universal Service Order Code" or USOC. The most popular one is the the RJ-11 which is for a single line telephone (1-pair) and is wired on a 6 position jack but only the two center pins are active.
Then for the data side the two most popular types of jacks both utilize an 8-pin modular jack (commonly incorrectly called an RJ-45) with all 8 conductors active wired to the T568A or T568B standard.


Sincerely,
Joseph Golan, RCDD

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