Compression diagram Twisted pair 4. How to enable the Internet cable LAN: What is needed for crimping, basic rules for crimping couples. Step # 2 - Trimming Insulation

What is the difference between 100 Mbps with twisted pair (all 8 wiring) and 100 Mbps (compressed 4 wiring), what are the pros and cons?

A bit of theory

When using a twisted pair to support the speed of 100 MB / s, four wires are used. The default is an orange and green pair. In most cases, the remaining wires are not used. Therefore, they are used for: connecting another PC on the same wire, or two analog phones, or connecting IP phones, or in the case of POE (Power Over Ethernet), unused pairs are used to transmit electricity.
In 1000 MB / s all 4 pairs are used. That is eight wires. There and crossovers are completely crimped.

For 100 Mbps used 2 pairs : 1, 2, 3 and 6 Contacts ... For the crosa, 1 with 3 contacts and 2 s 6 are changed.

Direct connection (with both ends):
1-Beloorange
2-orange
3-Belozleny
6-Green

CROS(at one end, it remains as described above, and from the other end it changes):
1-Belozleny
2-Green
3-Beloorange
6-orange

The speed of 100 Mbit / s refers and applies to the Fast Ethernet network (see twisted pair):
Cat5 (frequency band 100 MHz) - 4-paired cable, was used when constructing local networks 100Base-TX supports data transfer rate up to 100 Mbps when using 2 pairs.
Cat5e (frequency band 125 MHz) - 4-paired cable, improved category 5. Data transmission speed up to 100 Mbps when using 2 pairs and up to 1000 Mbps when using 4 pairs.

Certification passes the network made on twisted pair 5e (8 wires). But at the same time, the other cable supports a complete duplex.

I want to note that 2 pairs of cable, no matter (!), 5th or 5e category, is enough for 100 Mbps, i.e. For their 100 mbit switches.

The question pops up: why in ports 100 megabit switch 8 contacts for connecting a compressed 8 residential cable ????

I stumble on it:

4, 5, 7, 8 is present in the cable but not used (!). Seeking further ...

I stumble on it:
100Base-TX, IEEE 802.3u - Development of the 10Base-T standard for use in the Topology Networks "Star". The twisted pair of category 5 is involved, only two unshielded pairs of conductors are actually used, duplex data transmission is supported, a distance of up to 100 m. (See wiki).

Strange ... I think ... Well, okay 2 pairs so 2 - because even the conveyor production of 4 pair cables 5e already makes you think about using 8 guides that the 5th that 5e categories in 100 MBs, if even wiki says that In fact, 2 pairs running on 100 Mbits, no problem, but most of all makes you think about 4, 5, 7, 8, the conductor does not even participate in the 5th category.

So, why make 8 contacts in the port of the Svitche that will never be able to work with a cable 5e to speed up to 1000 megabit?

This question must be specified by manufacturers. I think this is due to the fact that in the warehouse there were only such connector (nests) and equipment for soldering are configured for them.

conclusions

1) Regarding the Calculation of Real Speed, you need to look towards the Ping team.

2) As a rule, in order to distribute the Internet to four subscribers with a speed of 1 MB / s, it is not necessary to have a provider to have a channel in 4MB / s. There is a special formula for calculating the optimal speed. This is explained by the fact that not always all 4 subscribers will swing at the same time / give. As a rule, the provider does not guarantee speed, but says that this is possible. You can read in more detail the bandwidth

Today it is impossible to submit your life without the Internet, the connection of which is impossible without a special wire called twisted pair. Such a cable allows you to connect multiple devices using as little wiring as possible. However, in front of the home master the question arises how to connect the connector connector to the veins without contacting professional communication. Today it will be about such work as crimp twisted pairs. We will deal with how you can perform the pressing at home with your own hands, what tools will be needed for this, and is it possible to do everything without the use of special devices.

Read in the article:

WHAT POSSIBLE POSSIBLE

Twisted pair is called a cable with four or eight veins. They are twisted in pairs. Each two veins have similar colors (blue and blue and white, brown and brown and white, etc.). For each of them, the connector is used for 4 or 8 contacts, respectively. Compound live cable with tip and called crimp. Such a name appeared because the contacts of the connector connector after placement in it the cable veins are pressed inside, piercing their insulation, thereby fixing the wire and creating a dense, high-quality connection. To date, the most common connectors are RJ45.

Important! Performing a similar work should be careful with the RJ45 pinout in colors. In the event of an error, the connector will have to cut off and throw away, it is not subject to dismantling and re-install.

Tool required for crimping couple

In addition to the knife for stripping the main insulation of the cable, a special tool will be required - the crimper for crimping RJ45, which is possible in any specialized store or on Internet resources. Using such a Crimper, the work is performed in minutes. However, if desired, you can do without a specialized tool for crimping the RJ45 connector. After making the pinout (distribution lived in colors for the appropriate contacts), they can be pressed by a conventional knife.

Opinion expert

SS Designer Engineer, OS, Skud (Communication Systems, Security and Fire Alarm, Access Control System) LLC "ASP North-West"

Ask a specialist

"Performing work without a special tool, you need to be very careful. Before squeeze the RJ45 cable, you must make sure that it is located in the connector correctly. Otherwise, the connection will break quickly, and everything will have to do again. "

How to frighten a twisted pair: schemes and nuances

The pinout is the crimping scheme lived twisted pairs in colors in the RJ45 connector. The most important thing is to figure it out how to arrange veins in the tip. Here everything will depend on the future area of \u200b\u200bapplication of the finished cable. It should be understood that an eight-tier twisted pair is used for high-speed connection, and for switching peripheral devices (printers, scanners or TVs) - four-core. Let's discern in the nuances of the pinout of a cable.

Crimp twisted pair 8 lived: Color pinout circuit

The wrinkle of the Internet cable 8 wires can be produced by two standard methods: straight (marked as 568B) or cross (568a). Their differences are that the first option is used to switch a personal computer with a router or a hub, and the second type of pinout is used to connect two PCs into a common local network. Let's discern how each of these connections looks.

The sequence of colors in the pinout 568B is the same at both ends of the cable and looks like this:

1. White-orange.
2. Orange.
3. White-green.
4. Blue.
5. White-blue.
6. Green.
7. White-brown.
8. Brown.

But the sprinkling 568a (crossed) looks completely different. For the convenience of the reader, explain it with the help of a table.

As can be seen from the table, confused in the color scheme of the crosspoint twisted pair of 8 wires is quite simple. That is why when crimp 568a, if there is no sufficient experience, it is better to keep this scheme before your eyes. But this applies to the edge of a twisted pair for a network cable of a computer. But what about the peripheral devices?

Clamping scheme twisted pair 4 veins: applications

The order of layout in colors here remains the same. The only difference is that half of the contacts will be empty. The order is the following:

1. White-orange.
2. Orange.
3. White-green.
4. Green.

How to enable twisted pair 8 lived: a brief instruction

Illustration	Performed action
	To begin with, with the help of Crimper, we remove the external isolation. To do this, insert the cable into a special groove until it stops, clamp the crimper and turn it around the wire. Isolation is cut off and easily removed from lived.
	Now we will develop the veins, placing them in the desired order, according to the selected scheme.
	In the case of the connector there are special grooves that will not allow two veins to get on one contact. Riding the wire into the tip until it stops.
	It remains only to insert a connector in the desired nest and squeeze the handles of the Crimper until it stops.

As you can see, there are no difficulties here.

Below will be several schemes and images of various ways of crimping cable RJ45.

Direct Crimping Internet Cable

Crighted method of a network cable crimping

The cross-cutting pinout of the network cable should pay closer attention as to a more complex one.

How to clip online cable at home without Crim

The question is how to enhance the network cable, if there is no shrimp at hand, worries many. After all, to acquire a similar tool due to one or two crimp, at least inexpedient. However, there is a simpler solution.

If there is no CRMPER at hand, we produce all actions from step-by-step instructions, except for the last item. Here we take a knife, carefully fix the cable with the main clamp (at the base), after which we pierce contacts one by one. Time will leave a little more, but if you do everything neatly, the result will turn out the same.

We hope that the information set forth in today's article was useful to our respected reader. Write, ask, share your experience - it will help novice homemade masters in learning. And finally, we suggest a short, but very informative video on the topic of today's article.

Rj 45 or "twisted pair" - a view of a wire consisting of four or eight thin livers, pairwise twisted between themselves. This type of cable is used for association computers in a local network or connection to internet. In some cases, the twisted pair can be used for connections No peripheral devices (such as printers) to a computer.

Despite the presence of more advanced and high-quality technologies ( optical fiber, wireless Communication channels), twisted couple still use due to low cable price and related equipment (network cards, routers), as well as high you just Deploying the local network and protected from external interference.

Like crimping cable connector RJ 45

Before starting the crimping, you must prepare all the necessary tools. In addition to the cable you will need : pliers for crimping and special connectorsRJ. 45 .

You need from wires remove External isolation (no internal touching), after which is correct (depending on the crimping scheme) arrange Residents in the connector. By placing all the veins inside the connector, it is necessary to check the correctness of their arrangement and clip Cable with pre-prepared ticks.

Crimple schemes

Direct scheme Used to connect network devices of different types (for example, computer and router), as well as for association Two hubs or routers in one local network. This crimping scheme is the most often used On local networks.

The order of the cable crimping for eight lives used in gigabit Local networks, the following:

In a twisted pair used in local networks operating at speeds in 100 MbpsThe following order of direct crimping is used:

Cross (reverse) diagram is needed to connect two computers directly, without the use of hubs or switches. Gigabit The twisted pair of cross-type is crimped as follows:

Inverse Wire diagram for a local network operating at speed 100 Mbps.

To connect other devices, such as network printers, IP cameras and other similar devices, the crimp circuit is typically written in the instructions for the connected technique.

Crimping of a two-party cable

In order to connect via one cable two devices Used binary cable. Those. One cable branches at both ends and is crimped with two connector.

The scheme below shows the principle of crimping in this way. Two pairs come to one connector (use 1, 2, 3, 6), the remaining couples come to the second connector (according to 4, 5, 7, 8)

Two-pal RJ 45 will not be able to use in gigabit networks or for crossing crimping (they will need to have all the eight). The direct scheme is all fairly enough.

How to build cable

Not in all cases there is enough available pair to connect the necessary devices. In this case, it may be necessary extension Wires in any way, in order to eliminate it.

The easiest way to build a cable - use special joyner RJ 45. This device is the usual adapter from one RJ-45 connector to another. For the connection, two pre-compressed wires and Joyner himself will be required.

Benefits This method of wire extension: simplicity Connections of all elements low cost, high enough reliability (Slim simply nothing).

disadvantages: Possible small loss of stability and speed of the connection are possible, not all the necessary tools can be at hand.

For the highest quality wire extension it is better to use router. This will allow you to get the highest quality and stable connection without any signal loss and reduce the speed of the network. Using this method of cable extension on the contrary increases Signal stability I. reduces Package loss.

TO disadvantages This method of compound can be attributed to high price. (We need to purchase a router). Also, you should not forget that the connection will require a socket or the use of PoE (electricity supply via vitua pair), in addition, the router can break at the most inopportune moment.

Categorically Not recommended to use scrurt. Even if the wires twist are perfect, you will not be able to avoid signal losses and many other problems with this method of cable extension.

The only one advantage twist is its price - it is practically is free, in the rest, such a way to build a wire is not good anywhere.

You can only use the twist as a temporary option when you did not have the necessary tools or equipment for something better. It should be followed by the following recommendations:

• It is advisable not to use a twist with wires made from a different metal (For example, to connect aluminum and copper wires thus). This will come to a strong heating and oxidation of metal, as well as to other undesirable issues;
• Twist places are better carefully isolateThis is at least a little protects the compounds from external filings and other difficulties.

The Internet has become popular in any corners of our country. Often there is a need to hold a cable in a house or on the street. And then questions begin how to enhance the Internet cable 4 veins? After all, the challenge of the provider is spent in time and money. Connect is easy if you explore the connection scheme.

Safety is needed a reliable connection. This will eliminate the possibility of damage to electricity and does not break the connection. Connectors are fixed by crimperas. Each connector is designed for its wire cross section.

Before starting work, you need to calculate how much the wire is needed. The distance between the equipment should not be more than 100 meters.

One of the most common cables was the twisted pair. It qualifies in different degrees of protection: grounded copper or aluminum. The amount of livers in such a cable can be 8, it is called 4 pairs, or a four-core - 2 pairs.

Data frequency depends on the cable quality. This indicator is called Cat. What it is higher, the better the transfer rate.

To work with the cable requires a special RG-45 connector. During operation, you need to connect the conductors to correctly so that the link is set.

Crimper is a special tool for crimping cable. It helps to connect two parts of the wire without a splitting.

Where the twisted pair is used, for what is needed

The process involves the installation at the end of a special connector network cable. It is necessary for connecting the cable and any device, such as a computer, telephone, modem. Contacts online must be properly connected, it will provide good conditions for devices.

Cable crimping scheme 4 conductors

Vitua couple on 4 veins usually crimped to connect PC to the LAN. They are used in homes or offices.

Network cable conductors have green and orange, striped and monophonic. What color to choose first, does not matter, the main thing is to observe a certain sequence. There are 1, 3, 6 veins. Two veins receive a signal, and the other two transmit. This method has no standard, but is actively used.

Crimping twisted pair 4 veins for the Internet can be carried out in two ways:

• Straight.
• Cross.

During the direct crimping a computer with the Internet network via the modem is connected. This method involves the direct location of the conductors.

During cross-section, connect multiple computers, creating a computer network. This species is often used in the offices of companies. Conductors in some places are changed in places.

Direct to 4 and 8 wires 568V

This type of connection is needed when connecting a PC with a router. The sequence for the crimping scheme should be like this:

1. Orange + white.
2. Orange.
3. Green (or salad) + white.
4. Green (or salad).

During direct connection, 4, 5, 7, 8 conductor remains not activated. The use of 4-core wires is much easier.

When installing 8-core wires, the connection of all lived. The speed at the same time increases to 1 GB / s. How to crimp twisted pair 8 lived for the Internet:

1. Orange + white.
2. Orange.
3. Green + white.
4. Blue.
5. Blue + white.
6. Green.
7. Brown + white.
8. Brown.

Note! In different connectors, the location of the core may differ slightly.

Cross

For a crossway method, the veins should be placed in this way:

1. Green + white.
2. Green.
3. Orange + white.
4. Blue.
5. Blue + white.
6. Orange.
7. Brown + white.
8. Brown.

To improve the speed of information transfer, the ends of the wire should be enhanced by different ways. And change blue colors on brown.

Required crimping tools

For crimping you will need:

• Connector.
• Pliers for crimping or crimp.
• Network cable.
• Stationery knife or stripper.
• Cable tester.

The crimper resembles pliers with holes. The part of the wire with the connector is inserted into them. It is replaced by ticks for crimping.

Stripper helps remove isolation from wires. It is possible to replace it with a knife or blade of the Crimper.

The tester will help check the quality of the connections. If it is not, then you can make a little physical strength and pull the cable for checking.

Connectors should be saved for several pieces more than necessary. Their price is low, but in the event of problems or troubleshooting in the work, do not do without their search. You can try your hand on an unnecessary area of \u200b\u200bthe wire too.

Procedure for action by burning with the help of Crimper

Wire crimping:

1. Prepare cable. It is necessary to make sure that the cable is enough to the desired site.
2. Release isolation. It is necessary to do it carefully so as not to damage the wires. For this, the floor of the centimeter from cutting is retreating and the shell is partially cut off. Hand you need to bend the cable at the scene of the cut. From this shell breaks off. If there is a stripper, then this process will not take a lot of work. Although it is necessary to take it.
3. Preparation lived. Conductors need to be separated from each other and straighten. Conductors from copper are soft, this will not be difficult. Wires are laid out in a row.
4. Crimping contacts. Loading lived in the convector occurs with the help of a crimper without removing isolation. Wires are inserted to the end. After that, with the press, the connector is compressed until it clicks.
5. Check. The last stage of the crimp, the crimper is cleaned and check the connection. To do this, you need to try to pull the wires from the connector. If the crimp has passed successfully, then it is impossible to physically. After the physical test, the electric time comes to check communication.

Important! For the Ethernet network use an 8 pairs convector, even if there are 4 veins inside only!

Crimple without tool

The crimping tool is expensive. Do not buy it if it is not needed for professional activities. In this case, it is better to resort to remedies.

With a screwdriver, you can press contacts in the connector one by one. After the actions have done, you need to check the cable.

Brief instruction:

1. Remove isolation from wire.
2. Place the veins in order.
3. Screwdriver press the cable to fasteners.
4. Crush with screwdriver contacts so that they rest in the veins.
5. Contacts must be inserted into the connector.

For large-scale work, it is better to get a specialized tool. For such a set in July 2019 will have to give about 1,900 rubles. It includes: tester, convectors, crimper, stripper and storage bag. Crimper can be bought for 450 rubles.

How to connect 4 Libid and 8 Libid Internet Cable

Connect the wires with 4 and 8 veins by twisting the bad option. This will entail a loss of speed. You need to purchase a special connection. It is also called the connector for twisted pair.

If you use the connector without fasteners, then you need to connect the veins in color on one side of the 8th residential, and near the 4th residential along the same sequence.

Important! Sometimes when connecting a twisted pair with different quantities, the colors did not match. Instead of green in the 4th residential there is blue. It must be connected to the green color of the 8th residential cable.

He lived with a scheme - a simple process. This can make an ordinary person, having a desire. The main thing in this process is compliance with standard prescriptions. With an independent connection, you can save money.

During the operation of the Internet, especially if you do not have a router, which usually lies, works and somewhere dust, the cable of twisted the internet pair of nomads from one device to another comes in disrepair - the confutor retainer breaks down, the cable braid is breaking, even happens that the connector somehow visited jam, after which the contacts are clogged, oxidized. It also happens that the repair started, the cable was transferred to another room, closed into the wall, lengthened and so on. In all these cases, it is necessary to overcover the connector on the twisted pair.

I think you are sitting and thinking about the connector? What is the twisted pair?

In the photo below the connector is compressed to twisted pair:

So it is that the connector must be changed in such situations.
What is required for this?

Instead of a set of words, I will offer you to immediately see my roller - Crimp twisted pair 8 lived 4 veins:

Likewise I will still describe what instruments are required and what scheme this connector is crimped.

1. As I wrote above, we need a connector

It can be bought in any electronic store of the city.

2. We need a crimp tool

It is clear that not every home has such a tool, it is the perfect option. To be neat and not hurry, you can scratch the connector with imaging tools, a screwdriver, a knife, just not kitchen and not sharp face, I think many at home has a knife that came out of the kitchen operation. And yes, if you are going to go buy a connector, take a few pieces at once, they cost a penny, and with the unsuccessful compression of the connector, we will not have to run behind him again.

3. Further that you need to know the compression scheme. There are 2 types of cable twisted pairs - 8 lived and 4 veins. Here everything is simple at first glance, but in fact the novice is worth trying to distribute the veins of the cable in colors and get into the slots of the connector contacts.

Crimping cable twisted pair 4 veins. Colors lived twisted pairs can be different depends on the manufacturer.

I also want to note that some employees of providers crimp the cable in their own way, changing colors, but the main thing is to comply with the same conversion of flowers both from the side of the equipment and on the part of the computer, so it is important, cutting the connector in no hurry to throw it out, carefully look at what color scheme it was punctured Old connector.

On this I think all, these compression schemes are suitable only for the Internet, the compression scheme for the internal network is the other and tell about it somehow in another article.