Why does the LAN way not use a cat, while the optical broadband FTTH requires a cat?

Hello, the LAN mode means that all users in the building must access the Internet through a unified building switch, and everyone shares the same bandwidth, so each user no longer needs a separate cat. The "lightspeed broadband" means that each user uses a separate optical fiber to access the Internet, and each user has exclusive bandwidth and does not interfere with each other, so each user needs a cat separately, and the use of optical modem can not only enjoy the bandwidth exclusively, but also greatly improve the degree of information security.

In LAN mode, all users in the building must access the Internet through a unified building switch, and everyone shares the same bandwidth, so each user no longer needs a separate cat. "Lightspeed broadband" means that each user uses a separate optical fiber to access the Internet, and each user enjoys exclusive bandwidth without interfering with each other, so each user needs a separate cat. The use of optical modems not only allows you to enjoy exclusive bandwidth, but also greatly improves the degree of information security.

At present, optical fiber broadband is mainly PON access mode, PON access mainly has FTTB and FTTH, FTT B is fiber to the building, and the user device ONU (optical fiber access cat) is placed in the hard well of the corridor and then connected.

Go to the user's home via the network cable. FTTH stands for Fiber to the Home, and this access ONU is placed in the user's home. Therefore, according to the different access methods, some places require cats and some places do not need cats.

That's the cell broadband, it's a network exit for multiple people, the speed is slow when there are many people, the speed is fast when there are fewer people, and the adsl cat is a fixed user bandwidth, which is not affected by others, and the speed is like that.

It's not the same, some have a cell broadband line, one server per cell, so you don't need a cat.

But generally Netcom broadband must pass through the **line, there must be a bound **number, so there must be a cat.

Your home's current broadband is ADSL, and the previous broadband is cell broadband FTTX+LAN

For details, please see.

The kind you use should be a public router, which automatically dials in on the router. So you don't need to dial in anymore.

The computer can only process binary numbers, and the role of the cat is mainly to convert the analog signal into a digital signal into the computer, and then convert the digital signal in the computer into an analog signal and send it out. ~~

Broadband requires dial-up Internet access.

Previously it was narrowband, now it is wideband.

OK. It is not necessary to use an optical modem to install optical fibers.

At present, there are basically the following ways to use fiber to the home:

1. Most of the optical fibers used by ordinary residents in their homes adopt the home fiber + ONU (optical modem) method, which occupies the vast majority of the market share of the broadband market;

2. For office buildings, apartment buildings and other places where users are concentrated, the FTTH+LAN mode of optical fiber entry is generally adopted, that is, the optical fiber enters the building, and then ONT through the large user gateway equipment (its essence is a slightly larger optical modem, which has strong functions and many ports compared with ordinary optical modems), in this case, it is only a network cable to enter the home for users, and there is no need to use optical modems at the user;

3. There is also a kind of user IP dedicated line, which uses optical transceivers installed in the computer room and users for group customers or Internet cafes and other services.

4. If the user uses an optical modem switch or router, the optical fiber is directly introduced from the operator, and there is no need to add photoelectric conversion equipment. Therefore, it is not necessary to use a modem device.

The broadband in fiber-to-the-home mode cannot be directly connected to the user's router and computer, but must be connected to the optical modem (the optical transceiver used by the dedicated fixed IP user) and converted to an electrical signal Ethernet interface.

It has to be, whether this cat is put in your house or in a weak well.

Whether China Unicom optical fiber needs a cat is decided according to the access line method. Among them, there are two types of broadband access lines: LAN and FTTH lines, of which FTTH lines require optical modems. where LAN lines.

1.Concept: It is provided by China Unicom to access the community in the "FTTX+LAN" mode.

2.Installation method: Buming line, there are lines and ports to open.

FTTH is the use of FTTH client equipment when optical fiber access, through the network cable or ** line to connect the user's computer, **, can use broadband Internet service, ** business, TV business, with large capacity, high speed, large bandwidth and other advantages.