How we join it with computer which LAN wire is use state or cross and proceser to joine

Your question is a little confusing ... chain saw networks?

I believe you want to know how to build a wired computer network ...

You will need special tools to do this including a RJ-45 crimp tool. You should use the highest quality ethernet, 'Cat 5', Cat 5e', wire available to you. On the ends you will install RJ-45 connectors (8 conductor 'plugs'. Choose and stick with one of the several color codes for placing the conductors into the RJ-45. Color code guide should come with your special tool. Make sure the ends are in proper order, trimed square and inserted fully into the connector before you crimp. Purchase a test tool to verify your work. Expect to pay $50.00 US or more for the testing tool. Cable, connectors, wire, router or switch and other hardware should be available where communications or electrial supplies are sold.

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