In our age, every apartment, house, and for some, even a dacha, has access to the Internet. Connecting to the World Wide Web has long become the norm and a vital necessity, and now I am writing these lines while sitting at my desk. The main way to connect to the Internet now is through the provider’s local networks, which are physically connected to our computer or laptop using a network cable - an eight-core twisted pair cable.

Often a situation arises when the computer needs to be moved to another place, and the network cable may not be enough for this move. How to extend the Internet network cable so that it is enough to reach a new location?

Cable extension options

Option one - joyner and patch cord

This method is simple and reliable. To increase the cable length, we simply buy a patch cord (see in the picture) and an RJ-45 twisted pair connector, or joyner. These computer little things are sold in any store, and cost mere pennies - when I bought them quite recently, a joyner cost 22 rubles and a patch cord for three meters cost 60 rubles.

By the way, the telephone adapter and the RJ-45 twisted pair adapter are indistinguishable in appearance - so do not confuse them. A telephone has 7 contacts and a computer has 8 - you can count it just in case.

So, insert the patch cord network card computer, and the other end into the joyner, to which we connect our network cable - everything works.

Option two - router

This extension option is convenient and no less reliable.
To connect using the second method, we need a router that we connect to the Internet. The router has several sockets for connecting a network cable, and thus is a kind of “splitter” of the Internet. With its help, we will not only extend the cable, but also be able to access the Internet from one channel additional devices. If you choose Wi-Fi router, then you won’t need computer cables at all - I recommend it for a laptop that is constantly moved from place to place.

Option three - new cable

Just take a new network cable of the required length and connect it. The option is not entirely convenient, since you need to call the provider’s technician to connect the new cable to the equipment - you wouldn’t climb into the attic to find where your apartment is connected, would you? But this method is suitable for home owners.

Option four - twist

Need to say, that extending a network cable by twisting is far from The best decision , and it is better to use the methods indicated above. You simply cut the cable and insert the desired length,

for twisted pair connection via RJ-45 connectors

Sold individually for RUR 25 from 1 piece and for cash only.

Brief description and scopepasserbyRJ45-RJ45

Feed-through adapter (feed-through)8P8CRJ45-RJ45for unshielded twisted pairUTP cat5e.

Usedfor connecting two 8-core computer cables.With it you can easily and quicklyconnect the broken onecomputer or telephone lineor extend the existing cable. At the same time, the cable signal qualitywill remainpracticallyat the same level.

Unitedthe cables remain securely fixed, eliminating loss of contact. Thanks to the compact connectors, the adapter can easily fit anywhere and will not interfere with cable installation. The connection occurs through the 8P8C connector using an RJ-45 connector. The RJ series connector is used when laying computer and Internet networks based on twisted pair.

Feed-through adapterrefers to the passive network equipment and is used indoors.

SpecificationspasserbyRJ45-RJ45

Material - plastic.

White color.

Compatible with RJ-45 and RJ-11 connectors.

Any Internet connection somehow contains twisted pair cables in its physical design. It is through it that the information with which the user interacts is transmitted - messages, web pages or videos. This article will review RJ-45 twisted pair connectors, and also describe in detail the layout diagrams, connection methods and standards.

Cable

A twisted pair consists of several pairs of copper conductors insulated from each other. Usually there are 8 pieces (or 4 pairs), less often - 4 (2 pairs). The color scheme is strictly standardized for all types of twisted pair cables. There is a limitation for this cable - when connecting, the distance cannot exceed 100 meters between two nodes. To increase this parameter, you need to review the network topology and distribute nodes differently or use special network hubs.

Twisted pair has several varieties:

• UTP. The most common. It consists of simple pairs of conductors in a plastic braid.
• F/UTP. All conductors are surrounded by one foil screen common to all.
• STP. In this form, each individual pair has its own protected braid and a common mesh screen.
• S/FTP. It has a copper screen, as well as each individual pair in its own foil winding.

twisted pair connector

To create reliable connections, connectors from the RJ series are used. This short abbreviation stands for Registered Jack. This translates to "registered connector". It was first created by Bell in 1975 with the goal of bringing the connectors used to a common denominator.

The entire series of these connectors is in one way or another related to connecting to networks. For example, a four-wire RJ9 is used to connect the handset to the device.

Used as a twisted-pair connector, RJ-45, by the way, is divided into two types - standard RJ-45 and RJ-45S. The first one is used to create local networks, and the second is used to connect modems.

In fact, the term RJ-45, which has taken root in Russia, is called so erroneously because it is similar in appearance to RJ-45S, which uses four wires. However, the name is firmly attached to the local network connector, so this abbreviation will also be used in this article.

Appearance

The housing of the RJ-45 twisted pair connector is made of a less common shielded version with a special metal sheath. The new connector has eight legs inside, which are in a “charged” state. When crimping, they are pressed against the wires, “biting” into them and forming a reliable fastening and connection.

Crimping techniques

Each twisted pair cable has four colors. The pair has a conductor filled with a solid color and mixed with white. The palette is as follows - white-orange and orange, white-green and green, white-blue and blue, white-brown and brown.

Depending on the device connection parameters, different color options are used. That is, at one end of the cable there should be one pattern, at the other - another, or the same one, as will be shown below.

For example, when connecting a computer and a hub, the following color markings must be observed:

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

That is, color to color. And if you need to connect two computers or hubs, a special one is used, which is commonly called a “cross”:

As you can see, many colors have only slightly changed their location. The brown and blue pairs remained in their places, but the orange and green pairs changed.

By the way, many modern devices learned to determine the placement of pairs automatically, which is undoubtedly convenient when creating large networks.

Pass-through connector

Sometimes during the operation of a local network, the surface of the cable may be damaged and it needs to be repaired in some way. For this purpose, there is a female-to-female RJ-45 twisted pair connector. It is a plastic case with two connectors similar to those located on system unit or on a laptop. To repair a damaged cable, you will need to crimp it at both ends according to the described color schemes. Then connect them to the female-to-female RJ-45 twisted pair connector. Quite a convenient and simple way to quickly restore a network without replacing the entire cable. By the way, there is a second name for this twisted pair connector - joyner. In fact, this is just a component that connects two similar types of connectors.

Krone connector type

Krone is a company that set the tone and created its own type of connector with the same name. This term is mainly used to refer to sockets with a special connection mechanism. Although the company's catalog also includes a set of Krone twisted pair connectors.

Twisted Pair Crimping Tool

To build local networks, special devices and tools are used. In particular, a crimper is used to work with a twisted pair cable connector. In common parlance it may also be referred to simply as “crimping” or “crimping.”

This tool looks like pliers. One end of them is fixed. The second one consists of handles for performing force. Between them there may be several seats for connectors, depending on the design. Also included is sometimes a special blade for cutting and stripping wires.

After crimping the cable, it becomes necessary to quickly check whether the wires are positioned correctly. There is a special type of tool for this - special testers that allow you to find out in real time about the presence of a contact.

Crimping process

To connect network connection You will need: twisted pair cable connector cat. 5e or any other, the cable itself is of the required length and a crimper.

Depending on the purpose of the connection, you must first choose a color scheme. Then you need to take care to remove the insulation. To do this, there is a special place on the “crimp” for this procedure in the form of a hole. The cable is inserted into it, clamped and rotated in a circle. Only couples should remain. Now they need to be manually unwoven on each side and assembled in accordance with the color scheme.

Using a knife on the tool, you need to trim off the excess wires, down to about one centimeter. Now it's time for the connector. It is most convenient to hold it with the latch facing up. You need to insert the pairs into special grooves until they stop. At this point, you should make sure that the color scheme matches the required one.

When everything is ready, the wires are in the connector and placed correctly, it is time to make the crimp. To do this, it is installed in the seat of the crimper and the handles are compressed with force. In this case, the copper contacts will cut into the wires and form a reliable connection.

This procedure must be carried out at both ends of the cable.

What to do if you don’t have a special tool at hand?

It is not profitable to buy an expensive crimper just for one or two crimps. But in situations where you urgently need to connect the cable, there is a way out. To do this you will need a simple screwdriver.

As with the crimper, you first need to decide on a color scheme and also use a knife to strip the cable. By analogy, wires are inserted into a connector.

Now you need to use a screwdriver to press firmly and, most importantly, gently on the contacts. As a result, they should be slightly recessed relative to the body. The last thing to carefully press in is the plastic cable clamp. This method may not work the first time. In addition, the contacts may not be pressed completely, but if there is no other way out, then you will have to practice until you successfully crimp.

It is worth noting that the industry does not stand still, and there are already twisted pair connectors on the market that do not require special tools. They look like a regular connector with two drop-down panels. Below them are sockets into which the wires are inserted. Once snapped into place, the connector will automatically crimp. A fun and easy way to create a network without tools. The only thing you need to do is manually remove the braid.

Conclusion

In the world of twisted pair connectors or connectors, there are many different solutions. Some are universal, others are strictly defined by standards. In any case, their main purpose is to create a stable connection between the cable and the connector.

Despite the widespread use wireless networks, twisted pair connectors are still relevant to this day. After all, you still need to connect the Internet to the router somehow. Therefore, twisted pair and all its additional elements will remain in trend for a long time.