The connection of the crystal head, the correct connection of the crystal head

There are three things you have to keep in mind.

1 Computer-to-computer crossing.

2 Computers are pass-through to other devices (switches, routers, or hubs) and are ordered the same at both ends.

3 You can only use one cabling standard, 568A or 568BDon't have two criteria in one system. Then the wiring system you make can't communicate.

Or all 568aOr all 568bThere are two standards that cannot be on one line or one wiring!

Description: Illustrated in 1 crossover line. You use 568a wiring at one end, green-white, green-green, yellow-white, blue-blue, blue-white, yellow, brown, white, brown, brown, and the other end is.

Yellow, white, yellow. green-white-blue-blue-white, green-brown-white-brownIt is the 1st and 3rd lines for the 2nd and 6th lines.

568b and so on.

Straight line instructions in 2. You're wiring 568a at one end. green-white-green-yellow-white-blue, blue-white, yellow-white, brown-white-brown, and the other end is green-white-green-yellow-white-blue, blue-white, yellow-white, brown-white-brownSame at both ends. 568b and so on.

Orange White Orange Green White (Blue) Blue White (Green) Zongbai Zong.

As you mentioned, the blue-green swap works best.

The usage of the crystal head is not the same The former one you said is the ** connection method The latter one is the connection method of the network cable.

Connection method of crystal head: cross-interconnection method, direct interconnection method.

1. Cross-interconnection method: 568A standard is used at one end, and 568B standard is used at one end. The practice of parallel (straight-through) lines is to use both ends of the 568A or 568B standard.

2. Direct connection interconnection method: This is the most commonly used network cable production rule, which means that it can meet the communication rate of 100M bandwidth. Although its connection is also one-to-one, the color of each foot is fixed.

Specifically: the first foot - orange and white, the second foot - orange, the third foot - green and white, the fourth foot - blue, the fifth foot - blue and white, the sixth foot - green, the 7th foot - brown and white, the 8th foot - brown, it can be seen that the 4 pairs of cores of the network cable are not all arranged next to each other, the 1st, 3rd, 5th and 7th legs include 2 pairs of cores, but the order has been out of order.

Notes:

1. When making the crystal head, make the shrapnel of the crystal head face outward, and the inlet mouth is facing down, from left to right, follow the above line sequence, fully insert the line (to see the copper core of the twisted pair at the top of the crystal head as the standard), and then clamp it with a network cable pliers, and you can do it.

2. Cross-wire connection is used between the same type of equipment, and straight-through wire connection is used between different types of equipment.

3. Routers and PCs belong to DTE-type devices, and switches and hubs belong to DCE-type devices.

4. RJ45 network connector practice generally has 568A and or blind draft 568B two standard practices, according to the same standard that is, straight line, different standards that is, cross line. No matter how the wiring is done, when the final test is completed with the RJ-45 line tester, the 8 indicators should flash in turn.

The correct connection of the crystal head is as follows:

Material preparation: network cables, network cable pliers, etc.

1. Use the circle in the middle of the network pliers to peel off the outer skin of the mesh to change the shed wire, carefully turn and cut, and don't cut the eight twisted pairs inside.

2. After peeling off the outer skin of the network cable, slide the baggage, and sort the eight twisted pair wires according to (white orange, orange, white green, blue, white blue, green, white brown, brown), as shown in the figure below.

3. Use the cutter of the network cable pliers to cut the excess network cable neatly, as shown in the figure below.

4. Insert the copper piece of the crystal head upwards, as shown in the figure below, and insert the arranged network cables into it.

5. Finally, use the network cable pliers to clamp it, and the method of connecting the crystal head of the other network cable is the same.

6. Finally, use the network cable tester to detect whether it is passable, carefully observe the numbers on the two rows of display lights of the host and the auxiliary machine, whether the symmetrical display is delayed at the same time, if the symmetrical display is displayed, it means that the network cable is good, if the asymmetrical display or individual lights are not lit, it means that the network cable is disconnected or the core arrangement is wrong when making the network cable head.

There are two connection methods for the network cable crystal head: parallel wire connection mode and cross wire connection mode, and the specific connection method is as follows.

1. The specific connection method of the two connection methods.

a).Parallel wire connection.

1. Precautions. Use a professional tool to cut one end of the network cable neatly, and then put the neatly cut network cable into the clamp of the stripping wire, remove the outer coat of the head, you need to pay attention to the network cable can not be bent, after removing the outer coat of the network cable, you can see 4 pairs of 8 core wires, each pair of colors are different.

2. Steps. First arrange the 4 pairs of cores side by side, then separate them, use the 568b sorting method, insert them into the crystal head of the network cable, confirm that all the cores are inserted into the bottom, and use the network cable pliers to press the crystal head tightly to ensure that the network cable can fit tightly with the crystal head.

(2) Cross-wire connection mode.

1. Difference. The biggest difference between the cross-wire connection method and the parallel wire connection method is the arrangement of the core wire, and the connection method of the cross-wire The two ends of the network cable need to be connected to the crystal head.

2. Precautions. Therefore, when you use this method to connect the network cable crystal head, you must pay attention to the 568A core arrangement standard at one end and the 568B core arrangement standard at the other end. After the crystal head is connected at both ends of the network cable, you need to do a test to ensure that the network cable crystal head has been successfully connected and there is no problem of poor contact.

Second, the actual operation of the connection.

(1) ADSL broadband crystal head connection method.

Orange White Orange Green White Blue Blue Blue White Green Brown White Brown.

(2) Cross-wire connection (computer-to-computer or router-to-router).

1. Any end: green-white, green, orange-white, blue, blue-white, orange, brown-white, brown-white.

2. The other end: orange white orange green white blue blue blue white green brown white brown.

(3) Direct connection method (router to computer).

1, Router: orange white orange green white blue blue white green brown white brown, 2, computer: orange white orange green white blue blue white green brown brown.

Note: The direct connection method can also be used at both ends: "green-white, green-orange-white, blue-blue, blue-white, orange-brown, white-brown".

3. The formula for connecting the crystal head is as follows: hold the crystal on the copper under the nose. Keep in mind from left to right. Orange-white, all-orange, green, white-blue. Blue-white, all-green, brown, white-brown.

There are two ways to connect the crystal head, one is direct connection and the other is cross connection. The way to cross the line is to use the 568A standard at one end and the 568B standard at the other end.

The practice of parallel (straight-through) lines is 568A or 568B at both ends. Let's first take a look at the network cable module. This is the module that is installed behind the network cable socket at home.

On the left and right, A and B above show two different wiring methods, you can choose one. 1-3, 2-6 cross-connect. Although there are four pairs of eight cores in twisted pairs, only four pairs are actually used in the network, that is, the first of the crystal heads.

I. II.

The third and sixth feet play the role of receiving and transmitting signals respectively. The core arrangement of the crossover cable is as follows: the first pin at one end of the network cable is connected with the third pin at the other end, the second pin at one end of the network cable is connected with the sixth pin at the other end, and the other pins correspond one by one.

This arrangement is often referred to as a "cross line". For example, when one end of the line is white-green, green, white-orange, blue, white-blue, orange, white-brown, brown, the other end is white-orange, orange, white-green, blue, white-blue, green, white-brown, brown. 100m connection:

This is one of the most commonly used rules for making network cables. A 100M connection is a communication rate that can meet the bandwidth of 100M. Although its connection is one-to-one, the color of each foot is fixed.

Specifically: the first foot - orange and white, the second foot - orange, the third foot - green and white, the fourth foot - blue, the fifth foot - blue and white, the sixth foot - green, the seventh foot - brown and white, and the eighth foot - brown, from which we can see that the four pairs of cores of the network cable are not all arranged next to each other, the first foot, the fourth foot, the sixth foot - green, and the seventh foot - brown. This cabling method is also suitable for the connection of the hub (switch) to the workstation computer, i.e. the application area of "direct cabling".

Start with the next line. First, peel off the outer skin of the network cable. This time you can peel it a little longer to facilitate the thread at the back.

Four twisted pairs are exposed: divide the wires into two groups, the left and right groups, clamp the corresponding colored wires in the corresponding position of the module according to the way A or B, before tying the wires, let's learn about this wire binding tool: this is the head of the wire binding tool, the metal surface is the scissor-shaped head, and the excess wire ends can be cut.

Next, start threading, press the module and thread with a tool, press down hard, clamp the thread in the module, and cut off the excess thread. Tie all the other threads in the same way.

Summary. The correct way to connect the crystal head is: parallel wire connection or cross wire connection.

The correct way to connect the crystal head is: parallel wire connection or cross wire connection.

Detailed steps: 1. Parallel wire connection method. Use a professional tool to cut one end of the network cable neatly, and then put the neatly cut network cable into the clamp of the stripping wire, remove the coat of the head, you need to pay attention to the network cable can not be bent, after removing the outer touch of the network cable, you can see 4 pairs of 8 core lines, each pair of colors are different.

First, arrange the 4 pairs of cores side by side, and then separate them, use the 568b sorting method to insert them into the crystal head of the network cable, confirm that all the core wires of Liang Chen are inserted into the bottom, and then press the crystal head tightly with the network cable pliers to ensure that the network cable can be tightly fitted with the crystal head. 2. Cross-wire connection. The biggest difference between the cross connection mode and the parallel wire connection mode is the arrangement rule of the core wire, and the connection of the cross line is all ways, and both ends of the network cable need to be connected to the crystal head, so when using this method to connect the network cable crystal head, we must pay attention to the core wire arrangement standard of 568A at one end, and the core wire arrangement standard of 568B at the other end.

Oak Land Zen.