It is probably difficult to imagine life in the modern world without the Internet. The Internet, which appeared relatively recently, is now an integral part of our lives and work. It is held not only in houses and apartments, but in offices, businesses, factories, etc.
And in this article we will talk about how and with what to spend the Internet. What cable is needed to run the Internet on the street and indoors? How to connect an internet cable? And which internet cable is better?
So in order. If you have heard of this type of cable “network cable”, “twisted pair”, “UTP cable”, “ftp cable”, “optical cable”, “fiber optic cable”, “fiber optic cable”, “LAN cable”, almost all these words are synonyms used in the form of names by the household consumer for whose cable the Internet is connected to the house (apartment), premises, office, etc.
The more accurate name of the cable for Internet connection – “twisted pair”, this type of communication cable is used for broadband or high-speed Internet access. The twisting cable has a total diameter of about 5.2-6 mm. The cable consists of several twisted pairs. Conductors in pairs are made of monolithic copper wire 0.4-0.6 mm thick or from many thinner copper conductors (the cable is more flexible and is usually used in patch cords). Copper-clad aluminum (CCA) cables can sometimes be sold under the guise of twisted pair. The cores of this wire are made of aluminum covered with a thin layer of copper, they are less resistant to bending and less durable. Such CCA cables do not comply with EIA / TIA 568 categories due to the increased level of signal attenuation; also the standard provides production of veins only from copper.
Both the signals transmitted over the cable and the structural elements of the cable need protection. Protective elements are divided depending on the purpose:
chemical protection – protection of the cable from external influences (soil, water, gases, sunlight);
mechanical protection – protection of a cable against mechanical damages;
shielding – signal protection from interference (from external and internal electromagnetic guidance);
Protective elements extend the life of the cable. Foil and polyethylene are used for chemical protection of a cable. Cables protected by foil are denoted by the term “foiled”.
For mechanical protection of a cable use especially strong covers and a braid from a copper wire. The black polyethylene sheath protects the cable from sunlight (special protection used for cables intended for laying in the open air). Cables that have additional layers of protection are called “double jacket”.
Aluminum foil and copper braid are also used to shield the cable and individual pairs for additional protection against electromagnetic interference.
Shielding is applied both to individual twisted pairs that rotate in aluminum foil (aluminum metallized polyethylene tape) and to the cable as a whole in the form of a common screen of foil and / or braid of copper wire. The shield can also be connected to an uninsulated drainage wire, which serves for grounding and mechanically supports the shield in case of division into sections in case of excessive bending or stretching of the cable.
According to the international standard ISO / IEC 11801 Annex E, a combination of three letters is used to indicate the design of the shielded cable: U – unshielded, S – metal braid (common screen only), F – metallized tape (aluminum foil). From these letters is formed an abbreviation of the form xx / xTP, denoting the type of common screen and screen type for individual pairs.
Today, there are the following common types of screen design:
Unshielded cable (U / UTP)
No shielding. Category 6 and below.
Common screen (F / UTP, S / UTP, SF / UTP)
General screen made of foil, braid, or foil with braid. Protects against external electromagnetic interference.
Individual and general screen (F / FTP, S / FTP, SF / FTP)
Individual foil screens for each twisted pair, plus a common screen made of foil, braid, or braided foil. Protects from external obstacles and from cross obstacles between twisted pairs.
Shielded cables of categories 5e, 6 / 6A and 8 / 8.1 most often use the F / UTP design (common foil screen), while shielded cables of categories 7 / 7A and 8.2 use the S / FTP design (with a common metal braid and foil for each pair). ).
Which one is better and which one to spend on the street or in the house inside (based on price) because those that are more protected are more expensive. Based on the practice that is more used today, on the street let the cable protected (U / FTP) or (F / UTP, S / UTP, SF / UTP) or (F / FTP, S / FTP, SF / FTP) depending on your budget.
Indoors there is enough cable (U / UTP), basically all providers spend it on apartments and houses. If the budget allows, you can spend in the apartment and the cable for the Internet, protected by screens, because the house and apartment can also be interference from the microwave or TV signal, for example.
The Internet cable is connected by a special connector 8P8C, which is also called RJ-45.
Then the wires are inserted into the connector and crimped with a special tool for crimping.
For this purpose it is necessary to remove the top cover from a cable, having prepared its conducting on an arrangement in coloring. The order of coloring to connect the cable to the Internet should be as in the photo below, otherwise the Internet will not work.
white and blue;
Aligning and separating each wire separately, inserting all the wires separately into the connector until it stops. After that, the connector is inserted into a special connector of your crimping tool 8P
and perform one time smooth compression of the handles in half force (so as not to split the plastic connector).
The compression of the connector should not be too strong, otherwise damaging the connector, the Internet will not work. You can buy a cable for the Internet by following the link
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