For your locale, this is an elementary task. Come to the store and buy. However, the counter question of the seller - what do you want? - and the demonstration of a wide range of the most different from different manufacturers can be confusing.
Category
Twisted pair is divided into categories depending on the range of operating frequencies and, accordingly, throughput. Most of those organized to date local networks category 5e is used as the transmission channel. This one provides enough bandwidth for home and office up to 100 Mbps. However, for an office with serious internal information traffic, category 6 or 6a twisted pair is more suitable, on which Fast Ethernet and Gigabit Ethernet networks are built.
Internet cables for xDSL, DOCSIS, FTTx, Ethernet. Which cable to choose, features, disadvantages
Wireless surfing is not necessarily the best option. It does not always make sense to choose this Internet access. This also affects security. The more people that can access, the more insecure your Internet connection is, as any potential user could harm your network.
This means that they can surf the Internet in a much more relaxed and, above all, serene way. Therefore, there is no need to have Internet reception everywhere. In addition to the transmission speed, the reaction speed is higher. After years on the line, it seems like a small revolution could be available anywhere and on all devices - without the need for an annoying cable. This is not only practical, but also makes the apartment more pleasant. The usual boot salad is a thing of the past.
metal for stuffing
The UTP cable can be copper or copper-plated. Copper-plated UTP is cheaper, where the core in the core is made of aluminum (CCA) or steel (CCS) and covered with copper on top. By purchasing a copper-bonded cable, you can save some money (almost imperceptible when organizing small networks), but lose network speed. Practical experience shows that copper-clad cables do not always meet the certification of the declared category. And a cable with a copper-plated steel core also often creates problems during installation and crimping.
As users recognize this good value for money from providers, the number of people making comparisons and using their cable connection as Internet access has been on the rise for many years. networks cable television allow millions of households to send and receive data back-channel. However, this requires an upgraded cable and home network, a prerequisite that already corresponds to 60 percent of all German households. If you haven't already, installing an amplifier, splitter, coaxial cable, and traditional cabled multimedia outputs that provide a universal interface for radio, telephony, television, and the Internet will include an amplifier.
Shielded or not
In the vast majority of cases, low-current cable routes and electrical wiring are simply spaced a sufficient distance and a regular unshielded UTP cable is used. It is less expensive, more flexible and easier to install. However, there are situations when the cable needs additional protection. When laying twisted-pair cables outdoors, by default, shielded cable for outdoor installation is used. The question of the need to use such indoors arises in the case of laying a route near sources of intense electromagnetic radiation (powerful electrical appliances, electrical panels). Shielded S/FTP cable (UTP CAT7) provides maximum EMI protection over a wide frequency range. It quite successfully maintains the stability of the network even during the operation of powerful electric motors. When building a home and office network, working office equipment and household electrical appliances(kettles, microwave ovens) create insignificant interference, a foil cable will be enough to protect against them.
It should be noted that STP (and S/FTP) cable signal attenuation is always slightly higher, and shielded cable runs must be grounded at both ends.
Through the use of a TV cable network, customers can access almost speed-independent high-speed and provider points with exceptional stability and reliability. But which technology does more - and who supplies Germany better? The most important facts about broadband Internet.
Speed: high speed internet for everyone?
In principle, both technologies provide the supply of the Internet, telephone and television. The advantage, however, lies with the cable.
Availability: who supplies Germany better
On the other hand, cable internet cannot yet be registered nationwide: the network currently reaches nearly three-quarters of all households.External gasket
FTP and STP cables for external laying are usually protected from external influences by a special polyethylene sheath of an especially strong composition. If you need to lay a cable route section along the street, the main thing to pay attention to is the one declared for operation. temperature regime. When supercooled, the cable sheaths lose their integrity, and the copper conductors are exposed to negative impact external environment.
For air gasket it is worth choosing with a carrying cable. Pay attention to the recommended length of spans between supports. It is advisable to fasten the cable without a supporting cable to the walls or lay it in cable ducts.
Choice: Does the client have alternatives?
On the other hand, cable customers also have to make a choice when choosing: they are tied to the local cable network operator that supplies their federal state.
Prices: Are Costs Decisive?
However, they are only available to a few clients.Internet and voice connections
High definition multimedia interface. This is a type of connection consisting of a center wire surrounded by insulation and then a shield of black braided wire connected to ground, which minimizes electrical and RF interference. The cable connectors at each end are similar to telephone wall connectors, but they are larger.
Manufacturer's choice
The modern market for cable products is so diverse that it is dizzying. In principle, you can choose a manufacturer depending on stock availability and price preferences, but what you absolutely should not do is to purchase an uncertified NONAME cable. You will not be given any guarantee that the network on this cable will not “fall” in the coming months. Serious manufacturers give a guarantee of up to 25 years for their products (subject to recommended operating conditions), and quality certificates confirm the compliance of the cable with the declared category and give confidence that the cable route will not cause you trouble in the coming years.
Please note that cable color may vary. They are kilometer resistant and indispensable for modern world. Submarine cables appeared more than a century before the first Internet connections and are still used today to provide communication between people almost anywhere in the world.
Fragile, they were protected by a mixture of hemp dipped in Indian rubber. The bandwidth was limited and only allowed two words per minute to be transmitted. The first message transmitted from one point to another was: "Glory to God in the highest and on earth, peace, good will to people."
For local computer networks using twisted pair cable. To choose the right model, you need to start from the main features of the product:
1. Coating marking:
UTP or U/UTP - unshielded, without protective screen;
FTP or F/UTP - foil;
STP or S/FTP - shielded.
The screen serves to protect the signal from external interference - for example, when it is not possible to lay a "twisted pair" separately from power cables.
Much has changed since then, and submarine connections now traverse continental distances. To make this possible, cable technology has evolved so that component protection is now carried out using fiber optics. Currently, cables connect every continent except Antarctica, as shown on the page, which displays connections between countries and continents around the world.
To transfer data from one continent to another, cables work in complex ways. For simplicity, let's say you sent an email to a friend. This message is then converted into encrypted data that is sent from your modem to your ISP and then to the connection network.
2. Monofilament (English) solid) or stranded core (eng. patch). The first one is cheaper and suitable for most objects. The second is more expensive, as it is designed for laying with frequent bends, as well as for the manufacture of patch cords - cables with connectors for connecting two digital devices.
3. Core diameter(0.4-0.64 mm). The choice should be given to cables of the 5th and 6th category with cores with a diameter of 0.51 mm.
The network of connections, in turn, carries data to the backbone, the so-called "backbone of the Internet." These backbones correspond to the Internet cable network. That is, these are roads that carry information. The speed of movement is extremely high. There are ongoing projects that promise to multiply this number. The new cable does not pass through North America, which prevents direct interception by countries such as the United States and gives direct access to some of the world's largest traffic exchange points such as Frankfurt, Germany, London, England, Amsterdam, the Netherlands and Paris in France.
4. Number of pairs(pair - two cores ) . For computer systems a 4-pair, that is, 8-core cable is used (with the designation 4 × 2 × 0.51). All four pairs are used only when creating networks with speeds up to 1 Gbps. In most cases, only two pairs are used for speeds up to 100 Mbps. home networks, and alarm and intercom systems quite enough and 2-pair "twisted pair" with the appropriate marking - 2 × 2 × 0.51.
The federal government expects the cable to work at the start. Be sure to check out the new minimum price guarantee extension and even offer an automatic coupon tester. These cables are highly resilient and traverse hundreds of thousands of kilometers under water and connect all continents except Antarctica. The cable network that operates in the bottom of our oceans can be accessed on an interactive map where all the internet connections that span our world are represented by the bottom of the oceans.
One click on a cable lets you know the total length, where it goes, the year it debuted, and still who the owners are. Submarine fiber optic cables are used by a ship specially designed for this purpose. The length of the boat is about 145 meters, the breath is 24 meters and the depth is 8.5 meters. The ship also has 80 cabins and the ability to operate 42 consecutive days on the high seas.
Choose high-quality branded products with copper conductors. In order not to stumble upon less reliable "bi-metal" conductors (coated only with copper), try to scrape off the top layer with a knife, checking if a white core appears on the metal.
To connect a "twisted pair" to an outlet or equipment, it must first be crimped with RJ-45 connectors
Cables, before the long course ocean application, were only used for point-to-point communications. However, with the use of this ship and the development of new cables, the Internet can spread around the world at a very high speed. The cable is structurally composed of multiple fiber optic cables bundled within it and coated with multiple layers that include petroleum jelly, copper, polycarbonate, steel, and polyethylene. Such a cable never exceeds 3.5 cm in diameter.
Several studies have been carried out to find out what effect these cables have on underwater ecosystems, the results show that marine life is practically unaffected. This is because the cables are conveniently insulated, undamaged and do not take up large volumes in the ocean.
