The conductors of the data cable are made of very thin metal wires. That is why it is easy to break them if handled carelessly, by accident. In such situations, you will most likely need to compress it again.
This process is not complicated, but it has its own tricks and nuances. Also, for its implementation, you will need special pliers, but their presence is not necessary - you can carry out the process using an ordinary slotted screwdriver and a clerical knife.
Photo: distribution and termination of twisted pair cable
Before proceeding with the cable crimping, it is imperative to prepare everything you need. And also make sure that you purchased exactly the connectors that are required in your particular case. Connectors come in a wide variety of types, and an RJ-45 type is usually required to connect a computer to a network.
Types of cable
There are many different types of cables used to create a network between different computers as well as networking equipment.
The most common today are three types of communication cables:
Coaxial (coaxial) was the first to be used to build local networks of various kinds.
It is quite easy to crimp this kind of Internet cable at home; this does not even require a specialized tool - an ordinary office knife and a screwdriver are enough. The benefits end there.
This wire consists of three main parts:
The data transmission speed with this cable is only 10 Mbps. It is extremely susceptible to various kinds of electromagnetic interference; repairing damage to this type of wire is very difficult and problematic. Today it is practically not used anywhere.
Fiber optic (Optic Fiber) is the most modern way to transfer data today.
It consists of the following components:
Fiber optic is not subject to any kind of interference, the data transfer rate with its help is 2 Gbps. The distance between the individual nodes that this type of wire connects can reach 100 km. There is only one drawback - the rather high cost.
Twisted Pair (twisted pair) - most often, it is used both for building local networks and for connecting to the Internet.
It consists of the following components:
It can provide relatively high data transfer rates - from 10 Mbps to 1 Gbps.
Twisted pair can be:
Twisted pair is not susceptible to various kinds of interference, it is easily repaired. Correctly crimping a wire for this type of Internet is quite simple, but a special tool is required - a crimp.
Video: Twisted Pair Installation
Installation diagrams
The twisted pair wiring diagram is the order of the cores by color. Another name is pinout.
The following types of pinouts are most commonly used today:
The pins are numbered from left to right with the copper conductors on top and the connector facing the front towards the user.
Each type of wiring diagram has its own purpose. First type circuit STRAIGHT-THROUGHT (also labeled as T568) is designed to connect end equipment (personal PC, printer) with any switching equipment (router, hub).
Crossover scheme is used when there is a need to connect two pieces of network equipment - router, computer.
Straight-through
A direct wiring called Straight-through can be implemented in two ways - there are two standards:
The first option is generally accepted, but there are situations in which only the second can be implemented.
Color order using 568 A:
| Colour | № | Colour | ||
| white-green | 1 | white-green | ||
| green | 2 | green | ||
| yellow-white | 3 | yellow-white | ||
| blue | 4 | |||
| 5 | white-blue | 5 |
white-blue |
|
| 6 | yellow | 6 | ||
| 7 | white-brown | 7 |
white-brown |
|
| 8 | brown | 8 |
brown |
|
Color order using 568 B:
| Colour | № |
Colour |
||
| white-yellow | 1 | white-yellow | ||
| yellow | 2 | yellow | ||
| white-green | 3 | white-green | ||
| blue | 4 | blue | ||
| white-blue | 5 |
white-blue |
||
| 6 | green | 6 | ||
| 7 | white-brown | 7 |
white-brown |
|
| 8 | brown | 8 |
brown |
|
Cross Cross-Over
The Cross-Over scheme is more complex in terms of color coding - their order is somewhat confusing.
There are also two standards, they differ depending on the network bandwidth:
The standard for a 100 Mbps network has the following color order:
|
room |
Colour | room |
Colour |
|
| white-yellow | 1 | white-green | ||
| yellow | 2 | green | ||
| white-green | 3 | white-yellow | ||
| blue | 4 | blue | ||
| 5 | white-blue | 5 |
white-blue |
|
| 6 | green | 6 | ||
| 7 | white-brown | 7 |
white-brown |
|
| 8 | brown | 8 |
brown |
|
The standard of the second type - for a network with a given transmission rate of 1 Gbit / s - requires pinout of the wire as follows:
| №1 | №2 | |||
| room | Colour | room | Colour | |
| 1 | white-yellow | 1 | white-green | |
| 2 | yellow | 2 | green | |
| 3 | white-green | 3 | white-yellow | |
| 4 | blue | 4 | white-brown | |
| 5 | white-blue | 5 | brown | |
| 6 | green | 6 | yellow | |
| 7 | white-brown | 7 | blue | |
| 8 | brown | 8 | white-blue | |
Today, almost all network devices are able to recognize the connection method on their own (they have a function called Auto-MDIX). But there is a fairly large number of equipment still in use that does not know how to do this.
How to crimp an Internet cable with your own hands
It is quite simple to pinout the communication wire with your own hands. This requires only a few items, you can find and purchase them at your nearest computer store. You also need to know the parameters of your network equipment that needs to be connected. Since the crimp type (straight or cross) is selected depending on whether Auto-MDIX is supported.
Tools and accessories
To manually crimp a twisted pair of eight wires, you need the following tools:
Also, in addition to the tool itself, it is advisable to stock up on several connectors, in case the first attempt is unsuccessful.
The order of work
The process itself is nothing complicated, it is only important to follow the procedure:
When all of the above operations are completed, it is necessary to perform a pressure test. This can be done both with the help of special pliers and with a regular slotted screwdriver.
Cable check
It is quite simple to check the crimped twisted pair using a multimeter set to the dial mode. It is necessary to connect the cores by color with contact probes - they should all ring well. If you do not hear the sound signal, you should press the connector contacts - they are not tightly pressed against the copper conductors.
You can also check the connection using a special device. It checks the strength of the transmitted signal - accordingly, this device will make it easy to detect a low-quality pinout.
When working with a twisted pair cable, it is necessary to follow some rules, they will make it possible to avoid communication problems in the future:
Crimping a twisted pair using pliers or even a slotted screwdriver is not a complicated process. It is only important to follow the technology and do everything as carefully as possible. Since a high-quality compressed twisted pair is a guarantee of high data transfer speed. Therefore, before calling a specialist and paying him money, you should try to perform this simple operation yourself.
Today, stranded twisted pair is the most popular and reliable way to transmit information over the Internet or LAN.
Today many people have a computer in their apartment and have an Internet connection. There is often a need to connect a computer to the Internet using a cable or lengthening the wire when moving a user device to another location. You may also want to create a home network of several computers. All these issues are solved by creating an Internet network from a special cable.
Basic concepts
A special type of cable for the manufacture of computer and telecommunication networks is called "twisted pair". It consists of several pairs of copper conductors in insulation, twisted together with a certain number of turns per unit length. The most common is 8-wire twisted pair. All cores are enclosed in a common polyvinyl chloride (PVC) sheath.
Small twisting or twisting is done in order to neutralize interference from electromagnetic radiation from the conductors themselves and from third-party sources. Because when the cores are located close, the electromagnetic radiation generated by them is extinguished against each other, without creating signal losses. In addition, external interference is caught by the two twisted conductors in the same way, therefore it is easily recognized by the receiving device and cut off. The result is a high-quality digital signal with minimal losses.
Modern computer networks are connected with cables of the fifth category and higher. Today, the most common modification of cables No. 5 and No. 5е is capable of operating at frequencies of more than 100 and 125 MHz, transmitting up to 1000 Mb / s, with a conductor cross-section of 0.5 mm 2. The sixth and seventh categories of cables are used for high-speed Internet, have a bandwidth of up to 10 and up to 100 Gb / s, respectively, and with thicker cores.
Twisted Pair Types
- UTP - twisted pairs are not shielded, there is no external shield. The most common type for apartment computer networks, when there is no large interference and distances.
- FTP - twisted pairs are not shielded, but there is an external foil shield. It is used in small offices, where it is necessary to transfer data over distances of up to 100 m without speed loss, and where interference occurs.
- STP - each twisted pair is braided with a wire protective shield, there is an external shield. Used in mid-sized offices and establishments where there may be leads. They allow you to maintain the quality of the signal when transmitting over long distances, but not higher than 100 m.
- SF / UTP - twisted pairs are not shielded, but there is an outer copper braid and foil film that make up the double shield. They are used in enterprises to maintain signal quality over long distances and to protect against interference.
- S / FTP - each twisted pair is shielded with foil, there is an external shield in the form of a copper braid. It is used in enterprises with high interference and where it is necessary to maintain the speed of information transmission over a long distance.
The color of the cable insulation is gray, the most widely used color. Red or orange color means the insulation is made of non-combustible material.
Two ways to crimp twisted pair
Computer cable Rj-45 is connected to the device via 8P8C connector (abbreviation from English words 8 positions, 8 contacts). This connector is installed on the cable by crimping a twisted pair of 8 conductors in a color scheme, depending on the telecommunication standards.
The 568-A standard is obsolete and the most commonly used 568-B.
Following the diagram, the conductors with the 568-A system are laid as follows:
- White and emerald.
- Emerald.
- White and red.
- Blue.
- White and blue.
- Redhead.
- White chocolate
- Chocolate
The color order for crimping twisted pair according to the 568-B standard is as follows:
- White and red.
- Redhead.
- White and emerald.
- Blue.
- White and blue.
- Emerald.
- White chocolate.
- Chocolate.
The connector has eight grooves, where 8 twisted pair wires are laid in a color scheme. The pinout is shown above.
Network cables are needed to connect computers and in various combinations. For example, connect a router to a network, a computer to a router, two computers to each other, a splitter, a TV to a router. There are two options for making network cables.
Direct twisted pair connection by color
The first way is direct. pinouts of a twisted pair of 8 wires can be made both according to the 568 A standard (when one and the other ends of the wire are crimped according to the 568 A type), and according to the 568 V standard (when one and the other ends of the wire are crimped according to the 568 V type).
In our country, the 568 V method is widespread, and in the USA and Europe, the 568 A type is most often used. The only difference between these two methods is the interchanged veins of white-green with white-orange and green with orange. It is used to connect various user devices (computer, TV, laptop) to network equipment (switch, router, hub, router, patch cords, extension cable), and is also used to connect network devices to each other. The information transfer rate with this scheme is 1 Gbit / s.
Direct twisted pair connection 100 Mbps
In some cases, when a high speed of the Internet is not required and traffic of large volumes is not provided, you can use a connection according to the colors of a twisted pair of 4 cores: white-red, red, white-emerald, emerald. This method saves the consumption of wires, but it must be borne in mind that the highest information transfer rate drops 10 times and is 100 Mb / s.
Crossover Twisted Pair
The second way is cross or cross. Crimping a twisted pair of 8 cores (color scheme) is shown below, it is used to combine two computers into a home network without any network equipment or two client devices of the same type (computer, TV, laptop).
To make a crossover cable, you need to crimp one end of the wire according to the 568 A standard, and the other according to the 568 V standard. In this case, the veins are swapped: white-red with white-emerald, red with emerald. In this case, the information transfer rate will be only 100 Mbit / s. The Gigabit Crossover scheme involves swapping all eight veins: white-red with white-emerald, red with emerald, blue with white-chocolate and white-blue with chocolate. This 8-wire twisted pair pinout color scheme is designed for high speed 1000Base-T and 1000Base-TX networks when the data transfer rate is 1 Gbps.
To summarize, you can understand that if you need to connect a computer to the Internet, you should crimp both ends of the cable according to the 568 V type. If you want to connect two computers together, you should use the Gigabit Crossover scheme, where the first end of the wire is crimped according to the 568 A type, and the other is by replacing all eight wires.
How to crimp a network cable?
Now that it has become known how to correctly connect the twisted pair by color, you can start crimping. How to do this is described below.
Tools and materials
Sequencing
Using two knives on the crimper, you can cut the cable to the desired length. Then remove 2 cm of outer insulation from both ends of the cable using a knife and a notch in the crimper near the handles of the tool. You can also do this with a stripper or a sharp knife, but only carefully so as not to damage the insulation of the cores.
Unwind twisted pairs to make 8 separate cores. They are laid out in a row, according to the color scheme of the pinout of the twisted pair of 8 wires.
It is necessary that the ends of the veins are all on the same line, one is not longer than the other. The quality of the crimp depends on this. If any vein is longer, it should be cut to the level of others. The connector is turned over with the latch down, then all the cores are inserted into the connector along the grooves until they stop, observing the pinout. The outer cable insulation should be in the connector body, if this has not happened, the ends should be cut shorter.
Insert the connector with the cable into the crimper socket with the inscription 8P. Squeeze the handles firmly but smoothly until they click. If you have a tool on hand, this procedure is quite simple, but if there are no pliers, then you can get by with a flat screwdriver. To do this, put the tip of the screwdriver on the connector contact and push until it cuts through the insulation of the core with its teeth. Do this with each of the eight contacts. Then you should also push through the central part of the connector body - a notch on the connector near the cable entry for fixing. If it didn't work the first time, you can cut off the failed connector and do it again.
Check the quality of work with a multimeter. To do this, set the "resistance" mode on the device. To check the device, close the two probes together, the resistance should show 0 - it means there is a contact. Then put one probe in contact at one end of the cable, and the other probe on the corresponding color contact at the other end. If it shows 0, therefore, there is a connection, everything is fine. If it shows 1 or so, then the teeth did not break through the insulation, you should either push the contacts again, or cut and do it again.
You can check the quality of crimping twisted pair of 8 cores in another way. Ring the sequence of wires with a special network tester. How to use it is written in the attached instructions. And you can also connect the ready-made patch cord to the equipment and check if all the packets are received.
In this tutorial, I will show you how to crimp a LAN network cable and make your own internet cable without a tool. Instead of crimper (special tool for crimping twisted pair to RJ-45) we will use a regular screwdriver. And for stripping the twisted pair - a knife.
In the article, I showed the whole process using a crimper. And he promised to prepare a guide for crimping an Internet cable without crimping pliers. Everything is simple here: if you already have a special tool, then you most likely do not need all these instructions, you are already in the subject. And if you are looking on the Internet how to make a network cable with your own hands, then you most likely do not have a crimper. And you are not going to buy it, for the reason that you simply do not need it. The tool is not cheap and buying one to crimp two connectors is not a good idea. Therefore, you can do everything with a regular screwdriver and a knife. Yes, it may turn out a little kolkhoz and not the first time, but it will work out. But on a budget and without outside help.
We need the following materials and tools:
- The cable itself is twisted pair. I took a small piece, your cable must be of the required length. Buy a little with a margin.
- RJ-45 connectors. To make one network cable, you need two connectors. But be sure to buy more. The connector is disposable. And if something does not work out the first time, you will have to go to the store again.
- A screwdriver with which we will crimp the twisted pair into an RJ-45 connector.
- Twisted pair stripping knife.
- And preferably more wire cutters to trim the wiring. You can also use the nippers that are usually found on the pliers. If you don't have any wire cutters or pliers, you can cut the cable with scissors or a knife. This is not very easy right, but as a last resort you can.
Here's a set I have:
My knife is a little big for this kind of business, but it doesn't matter. The main thing is to be sharp 🙂
As it turned out (I learned about this while writing this article)that there are so-called toolless connectors. An interesting thing. With their help, you can make an Internet cable even without a screwdriver. You only need a knife to strip the cable. They look something like this (pictured is a SUPR connector):
How they work: we strip the cable and insert it into the connector. On the connector itself, there is even a diagram of where to insert which wires. Then we just snap it in and the cable is crimped. The thing seems to be not very popular. I don't even know if you can buy such a connector in a regular store. You have to ask.
Before proceeding to crimping a twisted pair using our screwdriver, you need to decide on the scheme according to which we will make the cable.
Crimping circuits for LAN cable
There are two ways you can make an internet cable. Most likely you want the first method, direct crimp. Let's take a closer look.
1 If you need a cable to connect a laptop, computer, TV, or other equipment to a router or modem, then you need to make a cable according to this scheme. This is a direct crimp order. The easiest and most common way. Such a network cable, for example, comes with a router.There are two crimping methods: T568A and T568B. I did it according to the T568B circuit, which you can see below. It turns out that we crimp both connectors in the same way.
I think you have decided on the scheme. You can read more about this in the article:. I will be making a simple cable (straight crimp) using the T568B scheme.
Twisted pair crimping without tool (crimper)
If you have everything you need, you can start making the cable. I will try to show everything in maximum detail and step by step.
1 Remove the external insulation from the twisted pair. About two centimeters. Cut the insulation lightly in a circle and pull it off. Just watch carefully not to damage the insulation of the wires themselves.
We insert the wiring all the way. They should go completely and rest against the front wall of the connector.
5 Once again, we check if the twisted pair has entered the connector correctly, and proceed to crimping. Take our screwdriver (maybe you have something else), and press the contacts in turn. Look carefully, do not hurt your hand!
The contacts must be pressed hard. So that they pierce the cable. The contact itself should not just align with the connector body, but be slightly recessed into the body. The lesson is not the easiest one. When I pressed the cable with a screwdriver, it was hardly inserted into the LAN port of the router (but it already worked), after which I still pressed the contacts with a screwdriver.
After I squeezed each pin, I snapped on the cable retainer. It is simply pressed inward and the outer insulation is pressed in.
Everything is ready. We do the same on the other side of the cable. I got it like this:
As you can see, the contacts themselves are slightly damaged by the screwdriver. When crimping with a crimper, there is no such damage.
I tested the cable by connecting my laptop to my router. The Internet appeared on the laptop, which means that everything worked out and works. I managed to make a network cable the first time. Even without a special tool, using a regular knife and screwdriver. I hope you did the same.
What if the network cable doesn't work?
Maybe this. But I would not rush to immediately dump everything on the cable. It is possible that the problem is with the router, computer, or other device you are connecting. Need to check.
- Connect another device using the manufactured cable. If possible, check the devices by connecting them with another cable. To make sure that it is the network cable that we just pressed.
- Be sure to carefully check the sequence of wires in the connector according to the diagram.
- If you messed up the sequence of wires, then bite off the connector and redo.
- If everything is according to the scheme, then take a screwdriver and squeeze the contacts on the connector. It is possible that there is no contact.
That's all. Write in the comments about your results, ask questions, and share tips. Good luck to all!
With the modern development of technologies, more and more often a copper cable with 8 UTP cores of category 5 is used to connect a computer network. You can buy it by the meter.
But in order for it to connect to the computer socket, it is necessary to purchase and install on the wires from both ends of the cable special connectors of the 8P8C type, which you need to be able to crimp correctly. Therefore, users want to learn how to do crimping twisted pair cable 8 cores yourself.
In contact with
Crimping a twisted pair of an Internet cable
To crimp the internet cable you will need:
- cable of the required length;
- rJ 45 connector in the amount of 2 pcs., it is desirable to have a spare one;
- crimping pliers.
Cable
The four-core cable was replaced by an eight-core cable capable of transmitting information up to 1 Gbit / s.
Twisted pair - this is an eight-core cable, copper, similar in color, the wires of which are twisted in pairs, which significantly reduces various interference. With such a structure, it reliably transmits information via the Internet or a LAN (loyal network), which is a communication system that allows you to simultaneously use computer resources, and these are printers, modems, disks and other devices.
Connector
The RJ 45 connector is designed for crimp twisted pair 8 coresso it also has 8 contacts. Accordingly, all modern computers are equipped with connectors of the same type RJ 45. These devices are:
- shielded;
- unshielded.
The former are used for the same FTP or STP cable used to ground network equipment in order to protect it from damage from static electricity, for example, during a thunderstorm. Unshielded connectors are used for the UTP cord, they are used much more often.
Crimping pliers
Crimping pliers (crimper) are a tool used to remove insulation, cut and crimp cable cores. Masters always use them. It is advisable to purchase such a crimper. If not, use scissors, but will this ensure the efficiency of the manufactured cord.
- this is the fastening of the cord veins in the grooves of the connector, which can be with or without an insert. In a device with an insert, it will be very difficult to crimp solid copper strands because it is only intended for soft stranded wires.
The design of the connector is very simple, it has 8 channels for crimping and securing each copper core, above them there are metal contacts, which have special bumps to maintain a more reliable contact.
To correctly define numbering, it is necessary to place the connector with the latch towards you so that the contacts are located on top. This means that pin # 1 will be on the right and # 8 will be on the left. This numbering must be remembered when performing crimping work.
Scheme
The TIA / EIA -568 standard provides, depending on the application, two methods of crimping wires, namely:
- straight - when the cores from the two ends of the cable are assembled in the same sequence, this is how they are crimped;
- cross (cross), in which the wires in the connectors are not symmetrically arranged, as some of them cross.
Crimping methods
There are two generally accepted basic cable crimping schemes: 568A and 568B. Important to remember! Laying the conductors must begin with the first and end with the eighth contact.
Straight crimping twisted pair cable 8 cores performed according to the 568A or 568B scheme. This means that the crimp will be the same, symmetrical at both ends of the cable. Type A is used in Europe and the USA, we use type B. The difference between them is only in the location of the red and green wires. The direct crimp method is used to connect computers and network devices.
Correct crimping schemes by the cross method are performed in two versions, which we will consider.
Standard 100 Mbps Cross-Crimp.
Typical Cross-Crimp for 1 Gb / s High Speed \u200b\u200bNetwork.
The cross-crimp method is used to make cables that connect computers. Crimping type Gigabit Crossover, provides for crossing all 8 cores.
RJ 45 connector crimping
The end of the cable is taken in the hand, crimping pliers or a knife, stepping back from the edge of 3 cm, cut off the outer insulation in a circle. When doing this, be careful not to damage the coating of the wires. It remains to undo and neatly align all the veins.
A crimp scheme is selected and, accordingly, the cores are distributed to it in the desired order. Now you need to cut them evenly, leaving about 1.2 cm from the edge, that is, by the length of the connector, because they must completely fit in it.
If, after cutting, colored veins protrude beyond it, the connection will be fragile and may break quickly. Therefore, an extra fitting will not hurt. The ends of the wires are cut perpendicular to the axis of the cable, inserting them into the grooves of the connector until they stop, where special protruding tubercles should tightly clamp the winding of each core so that it does not move and has good contact.
Check carefully if all 8 wires are inserted tightly into the connector, you can crimp. To do this, the pliers have a special connector marked "8P", into which a connector with wires is inserted. It is impossible to confuse because there is only one position in it. We clamp the connector well, until a click appears, now everything is ready. Exactly the same steps are repeated with the second cable device, after which it is ready for use.
Checking the work. To do this, pull the first, then the second connector, if they are securely fixed, they will never fall off. They can also be tested using a cable tester. Green lights on the two modules indicate a good connection. The indicator did not light up, perhaps lived poorly compressed, and a red light indicates a wrong connection or a short circuit.
When the cord is checked with a multimeter, it is set in the dialing mode, then the wires are connected by contacts by color, there is a sound, then everything is fine, it is not, the reason is in the contacts, perhaps you just need to press them.
It is advisable to use special caps that are put on the connectors and protect the conductors from kinking and breaking.
In that article, we covered the entire crimping process, from wire stripping. In this article, we will take a closer look at the most critical stage of crimping a twisted pair, namely the crimping circuit. The order in which the conductors should be placed inside the connector raises the most questions and difficulties for inexperienced users. Therefore, it is worth examining this topic again.
As you know, there are four twisted pair crimping schemes. Two crimping schemes for straight cable, and two for crossover. But, do not rush to be intimidated by such a variety of schemes, in practice you will need a maximum of two, and most likely only one crimp scheme.
Straight cable option no. 1. The most common crimping scheme for straight cable. TIA / EIA-568B standard.
- White-orange
- Orange
- White-green
- Blue
- White-blue
- Green
- White brown
- Brown
Straight cable option No. 2. A less common straight-through cable crimping scheme. TIA / EIA-568A standard.
When using this twisted pair crimping scheme, the colors go in the following sequence:
- White-green
- Green
- White-orange
- Blue
- White-blue
- Orange
- White brown
- Brown
Two very important points should be noted that may not be obvious to an inexperienced eye.
- Since it is a straight cable, the order of the conductors is the same on both sides of the cable. If on one side the first contact of the connector is connected to the green conductor, then on the other side of the cable the first contact also connects to the green conductor. No changes required.
- When positioning the conductors, the connector is latched down.
Crossover cable option # 1. For 100 Mbit / s networks.
If you want a 100Mbps crossover cable, you need to crimp one side of the cable according to the TIA / EIA-568B standard and the other according to the TIA / EIA-568A standard. Figuratively speaking, a crossover cable for 100 Mbit / s networks is a cross between the first and second methods of crimping a straight cable.
When using this twisted pair crimping scheme at one end of the cable, the colors go in the following sequence:
- White-orange
- Orange
- White-green
- Blue
- White-blue
- Green
- White brown
- Brown
And the second end of the cable uses the following color sequence:
- White-green
- Green
- White-orange
- Blue
- White-blue
- Orange
- White brown
- Brown
Crossover cable option # 2. For 1000 Mbps networks.
For 1000 Mbps networks, a different scheme is used to crimp the twisted pair into a crossover cable. In this case, one side of the cable is crimped according to the TIA / EIA-568B standard, that is, like this:
- White-orange
- Orange
- White-green
- Blue
- White-blue
- Green
- White brown
- Brown
And on the other side of the cable, a new color sequence is used, namely:
- White-green
- Green
- White-orange
- White brown
- Brown
- Orange
- Blue
- White-blue
Conclusions. At first glance, twisted-pair crimping circuits are a dark forest that you will never understand. But, as you can see from this article, everything is much simpler.
There are two standards for crimping straight-through cables, and a crossover crimp is about using the two at the same time on opposite ends of the cable. For 1000Mbps networks, the crossover crimp is a little more complicated, but you will probably never need it. Because even 100 Mbit / s crossover cables are practically not used anymore.
Now all modern network equipment is able to automatically determine the cable crimping scheme and adapt to it. Thus, the crossover cable has lost its relevance and is currently practically not used. Therefore, if you do not know which twisted pair crimping scheme to choose, then use the first (TIA / EIA-568B) and do not hesitate.
