And the computer can not connect switches

Cable plug, it switches the first two ports of intermittent light is flashing the bottom-up, and the computer Naduan plug cable, network cards lights are not bright, and the system shows that “lines have been pulled out ..”, This switch on all the other computers have access to normal.This is the root-port switch from another cable, and cable joints at both ends again, the phenomenon still.This is the root of the main cable is laid has through walls of the line, not For convenience.For computers to test, it is also a network card as light is not bright, and the system shows that “lines have been pulled out ..” network of individuals that may be out of line, I do not know whether or not! How to judge? How to resolve this situation? Please enlighten you!

you will not line instrument you do not, the halo would not be a line is estimated to cable does not work you can re – Crystal 1,2,3,6 to do in the first line of the color change is right right, only cable used in the four-for-line, you can try to look like crystal pressure from the line in the first off I think the whole and can not cut off You say it's like now, there is a cable broke, you do so, there are twisted-pair 8, in fact, only 4 of the communication, this 4 row 568B by law, is a white-orange, orange, green and white Green did not use the other, you have the best line-if you do not have the line, you put this into place a few other colors, try, it is best to look for a line – Otherwise, you have the number of crystal in the first ah! Naduan you switch from another port to test, line test line is broken through walls, broken to re-do the first screening in the past (for lines of the inconvenient)
because the cable is only 4 with the transmission of data, and 4 is the anti-jitter