The twisted pair is 8 lines, divided into 4 pairs, two or two two two, green and white green lame, blue and white blue, .... My expression is: copper movie up, connected below, from Left right number: 12345678 These digital indication positions, so-called 1236 pick-up. 1236 is the uplink and downlink data transmission line, 12 pairs, 36 pairs, RJ45 connected pair defined as: 1 RX 2 RX-3 TX 6 TX-The remains 4, 5, 7, 8 are NA. As long as we use a line with a strand together, 36 can use a strand together, it is possible. Remember 1-2, 3-6 use another pair. Don't pick 1-2 pair, 3-4 pair, 5-6 pair ... The latter is in short distance, although it can also pass (Can be the longest)
150
Meter
Yes), simple line tools do not test, but the bit error rate is high. Because this will cause a set of signals (negative voltage signals) through two core wires that do not strand, resulting in great proximal crosstalk Near-end-crosstalk. (TIA / EIA
568A
) Define the order in the following: Copper sheet, connecting below, from left to right: 12345678 Indicate position, 1-> orange ------------- 1-> Orange 2- > Orange ------------- 2-> Orange 3-> Green White ------------- 3-> Green White 4-> Blue ---- --------- 4-> Blue 5-> Blue White ------------- 5-> Blue White 6-> Green ---------- --- 6-> Green 7-> Brown white ------------- 7-> Brown white 8-> brown ------------- 8-> Brown ------------------------------------------------------------------------------------------- ------------------------------------------------- ---------------------------------------- except for the intersection, used for HUB level Or do not connect two computers through Hub. 1-> Orange ------------- 1-> Green White 2-> Orange ------------- 2-> Green 3-> Green White - ------------ 3-> Orange 4-> Blue ------------- 4-> Blue 5-> Blue White ------- ------ 5-> Blue White 6-> Green ------------- 6-> Orange 7-> Brown ------------- 7-> Brown 8-> Brown ------------- 8-> Brown 1-2, 3-6 above the line on the interchange position!
