Analysis of the differences and advantages of FTTH and FTTB, FTTH (Fiber To The Home), a fiber directly to the home. Specifically, FTTH refers to the installation of optical network units (ONUs) at home or business users, and is the closest optical access network application type to users except FTTD (fiber to the desktop) in the optical access series. The remarkable technical feature of FTTH is that it not only provides greater bandwidth, but also enhances the transparency of the network to data format, rate, wavelength and protocol, relaxes the requirements for environmental conditions and power supply, and simplifies maintenance and installation.
The advantages of FTTH are mainly 5 points:
First, it is a passive network, from the central office to the user, it can basically be passive in the middle;
Second, its bandwidth is relatively wide, and the long distance is just in line with the large-scale application methods of operators;
Third, because it is a service carried on optical fiber, there is no problem;
Fourth, because of its wide bandwidth, the supported protocols are more flexible;
Fifth, with the development of technology, methods including point-to-point, 1.25G and FTTH have developed relatively complete functions.
In the optical access family, there are FTTB (Fiber To The Building) fiber to the building, FTTC (Fiber To The Curb) fiber to the curb, FTTSA (Fiber To The Service Area) fiber to the service area and so on.
FTTB (Fiber To The Building): It means fiber to the building. It is a broadband access method based on optimized high-speed optical fiber LAN technology. It uses fiber to the building and network cable to the home to realize broadband access for users. We call it FTTB +LAN's broadband access network (FTTB for short), which is the most reasonable, practical and cost-effective broadband access method.
FTTB broadband access uses single-mode optical fiber high-speed network to realize Gigabit to communities, LAN 100M to buildings, and 10M to users. Since FTTB is completely like a local area network in the Internet, dialing is not required to use FTTB, and FTTB is connected to the Internet through a dedicated line, and users can access the Internet as long as they turn on the machine.
Of course, FTTB access to the ISP will not be busy like ordinary dial-up Internet access. There is only a difference between fast or slow access to the FTTB Internet access, and there will be no access to busy situations, and because the Internet access through FTTB does not access the Internet through the telephone switching network, Only occupy broadband network resources, when using FTTB to browse the Internet, no telephone charges will be generated.
FTTB has the same hardware requirements as ordinary LAN: computer and 10M Ethernet card, so the hardware investment for users is very small. FTTB high-speed dedicated Internet users can not only enjoy all services of the Internet, such as querying information, seeking help, mail communication, e-commerce, stock and securities operations through the Internet, but also enjoy many broadband value-added services provided by ISP, distance education, telemedicine, interactive Video (VOD, NVOD), interactive games, broadcast video, etc. Compared with HFC, FTTB can fully guarantee the bandwidth of each user, because the final 10M bandwidth of each user is exclusive.
The advantages of FTTB as a high-speed Internet access method are obvious, but we should also see the disadvantages. ISPs must invest a lot of money to lay high-speed networks to each user's home, which greatly limits the promotion and application of FTTB. Most Internet users can afford to do a lot of work.
(1) FTTN: Fiber To The Node, Fiber To The Node
(2) FTTZ: Fiber To The Zone, Fiber To The Zone
(3) FTTCab: Fiber To The Cabinet, Fiber To The Cabinet
(4) FTTC: Fiber To The Curb, fiber to the curb
(5) FTTB: Fiber To The Building, fiber optic to the building
(6) FTTP: Fiber To The Premise, Fiber To The Premise
(7) FTTH: Fiber To The Home, Fiber To The Home
(8) FTTO: Fiber To The Office, Fiber To The Office
In different application environments, the optical cables used also have structural differences to meet the special needs of different environments.
