Network, telephone and cable TV household frequency division equipment are generally one in and four out (many are also expensive). If it is two rooms and one living room, network, telephone and TV interfaces can be reserved in the living room, master bedroom and secondary bedroom, TV interface in the restaurant and telephone interface in the bathroom.
If there are more rooms, you can choose to reserve; You can also run out the wires first and put them in the weak current distribution box. If necessary, you can replace the plugs leading to each room. Audio and video are different. Although they can be shared by frequency division, they can only provide signals for one terminal at the same time at home. I don't think it's necessary to leave an interface in each room.
The switching equipment of the internal and external network of the network is a router (for LAN) or modem (for ADSL), that is, a cat. The price is about 300 yuan. The switching equipment of the internal network is a switch or hub. It is better to use a switch. The price is less than 200 yuan. The hub can be bought at 80-90 yuan now.
There are routers with their own switches and cats with their own routes and switches in the market. The price is 300-500 yuan. It is recommended to use them. The telephone switching and frequency division equipment is a switch or junction box, which is also a good switch. The price is 100-200 yuan. The junction box is very cheap, but each room can't communicate with each other and can't bring more than 3 telephones; The frequency division equipment of TV is the frequency divider (Branch). Everyone should know.
Considering the simple construction and convenient maintenance of wiring engineering, it is best to put all kinds of equipment in the same place. There are generally weak current distribution boxes at the door of new houses, and connectors of various lines are reserved in the distribution boxes; Some are not reserved joints, but the line turns around in the box and then leads to a room.
It doesn't matter. Cut off the line in the box, connect the in socket of the switching frequency division equipment at one end and the out socket at the other end, and continue to use. We can transform the weak current distribution box ourselves, install switching and frequency division equipment, and pay attention to that most of the equipment needs electricity. We should leave a power socket in the weak current distribution box. The basic functions of the weak current distribution box sold on the market are not good, mainly in terms of network. Although there is one in and four out interface, it is only a distribution frame, which can not realize internal interoperability and multiple computers surf the Internet at the same time. It is still relatively expensive. It is not as expensive as DIY.
Individual houses without weak current distribution box wiring is more troublesome, or put all kinds of equipment next to the registered permanent residence; Why don't you lead the entrance line together first.
4. The way to access the Internet is telephone direct dialing; ISDN is also called one-line communication; ADSL is also called super first-line communication; LAN is the Internet cable; And access to the Internet with cable TV lines and power lines. The first two of them are outdated and need not be considered; The latter two are not popular, but only in some places. ADSL and LAN are the mainstream at present. The theoretical transmission speed of ADSL is 8m / s, and LAN can reach 100M / s. however, telecom generally only opens 512k-2m bandwidth. The actual use is also limited by the line conditions, the number of users and the width of Telecom outlet. Generally, it can not reach the maximum value. At present, it is not certain which is faster when ADSL and LAN are used, However, the Internet cable should be the development direction, and priority should be given if possible.
5. If you want to surf the Internet in different rooms at the same time, you have two options: one is to install a built-in switch router or cat, the other is to install simulation software on one of the computers and use one computer as a proxy server. The price is that if other computers surf the Internet, the proxy server must be on. The first method is recommended. In addition, cats given by ADSL Telecom generally do not bring switches and have to buy them separately.
6. 8-core network cable for weak current wiring network; Telephone line for telephone; Coaxial cable for cable TV. If there is a weak current distribution box, one bushing can be used for the three lines, which is more convenient. The network cable is eight core. At present, there are four in the family without practical use. You can borrow two as telephone lines, but the effect is not as good as walking alone. Telephone lines also have 2-core, 4-core and 6-core wires. There are also two wires useful at home. The quality of cables is very important (especially coaxial cables). My experience is that if signal interference or attenuation is found, more than 70% of the problems may be online, and the machine is less likely to be faulty. But now there are many fake and inferior cables, so we must pay attention to them when buying.
7. Special plugs and sockets shall be used for weak current wiring, and RJ45 head (also known as Anpu head / crystal head) and RJ45 head panel and module shall be used for network cable; RJ11 head and corresponding socket are used for telephone line; RJ45 head should be installed with special wire pliers and wire pestle. If you want to install it yourself, you have to buy it. And many weak current lines and sockets are not sold in the decoration market. Even if they are, they are too expensive. You can go to Anshan West Road and have a look. They are much cheaper. Note that the products of ampoule on the market are basically not real.
8. Briefly talk about audio and video cabling. Audio equipment includes signal source (CD, VCD, DVD, MP3, etc.), power amplifier and speaker, which are connected with audio cable. Single strand audio cable, also known as microphone cable, is generally used from signal source to power amplifier; From power amplifier to speaker, double strand audio line is generally used, also known as speaker line; When installing the speaker, pay attention to the selection of supporting terminals. It's better to connect directly from the power amplifier to the main speaker instead of using terminals; It can be used or not, but the line should be as short as possible and as long as possible.
Video equipment includes signal source (VCD, DVD, video recorder, video camera, TV box, satellite receiver, computer and even game console) and playback terminal (TV, computer, monitor, projector, etc.). There are many kinds of cables and interfaces for video input and output, mainly including D-sub 15 pin interface (using the same VGA plug and socket as the computer); RCA (composite video) interface; S port (five core lotus port); Component video port, etc. You can use any kind of interface, and D-sub is the best in effect. In the future, HDTV (high definition TV) equipment should use D-sub port and cable; RCA is the worst, but it is acceptable to us.
If your home's video signal source and playback terminal are not placed in the same place (such as using a projector), it is important to wiring now. Audio and video plugs are bought, but sockets are difficult to buy. Audio and video equipment are taboo to connect with sockets. If it does not affect the appearance, it is best to connect directly with cables between equipment.
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