[] Nanchang, Jiangxi sales cable | Nanchang sales 4 core cable | 6 core cable sales prices jurisdiction 11 districts and cities in Jiangxi: Nanchang (Jiangxi provincial capital, largest city), Jiujiang (Yangtze River port city), Ganzhou (Jiangxi Namdaemun, world tungsten), Shangrao (tourist destination, China Excellent Tourism City), Yichun (Ganxi central city), Jingdezhen (World porcelain), Fuzhou (Wets village), Gian (revolutionary sites), Xinyu (China Frank) Yingtan (China trails are), Pingxiang (southern coal all). ? FTTH (fiber to the home) and its advantages FTTH (fiber to the home) and the advantages of short fiber is optical fiber, the principle of total reflection in an optical fiber made of glass or plastic using tools and reach light transmission . Chinese University of Hong Kong before Charles Kao and George A. Hockham first proposed optical fiber can be used for communications transmission envisaged Kao has received the 2009 Nobel Prize in Physics. Growing broadband market so that the optical fiber is increasingly closer to the user, resulting in a series of concept FTTX and written ITU G.982 and G.PONB standards. FTTX optical network unit to position (ONU) where, divided into FTTH (FTTH), fiber to the building (FTTB), fiber to the premises (FTTP) and fiber to the curb (FTTC) and other types of cases. FTTH (fiber to the home) refers to the optical network unit (ONU) installed at the home user or business user, is FTTX series optical access network application types of users except FTTD (fiber to the desk) the closest off. FTTH significant technical features are not only provides more bandwidth, but also enhances network data format, speed, wavelength and protocol transparency, relaxes the environmental conditions and power requirements, simplifying maintenance and installation. FTTH has been considered a rising star of the ultimate ideal access networks, but also the development of broadband. Because it can meet the diverse needs of all types of users, such as high-speed communications, home shopping, real-time remote education, video on demand (VOD), high definition television (HDTV), and so on, these businesses are struggling to copper or twisted pair whom to achieve the goal, and it is easy to FTTH. 100M / sec bandwidth FTTH become for telephony, cable television and the Internet "triple play" the best guarantee. Internet users demand for bandwidth is always growing. Bandwidth ADSL access in the near future will become the bottleneck of network applications. The FTTH advantage in bandwidth makes it ideal for the future direction of development of network access. Future FTTH is the best of a variety of broadband access, but also the most expensive one. But it is possible to provide the most services, the maximum value of an access way. In front of the FTTH, the user can go to bear according to their needs and abilities. Operators have to do is to use good content to attract more people to use FTTH access. When it comes to FTTH, first we must talk about fiber access. Fiber access refers to the complete optical fiber as a transmission medium between the central office and the users. Optical fiber access can be divided into active and passive optical access access. Main fiber optic network users are lightwave transmission technology. The current development of optical transmission multiplexing quite rapidly, most have been in practical use. According to the degree of fiber deep users can be divided into FTTC, FTTZ, FTTO, FTTF, FTTH, etc. FTTH (Fiber To The Home), the name suggests is an optical fiber directly to the home. Specifically, FTTH refers to the optical network unit (ONU) installed at the home user or business user, a series of optical access user of the optical access network application types except FTTD (fiber to the desk) the closest off. FTTH significant technical features are not only provides more bandwidth, but also enhances network data format, speed, wavelength and protocol transparency, relaxes the environmental conditions and power requirements, simplifying maintenance and installation. The main advantage of the advantages of FTTH is 5:00: First, it is a passive network, from the central office to the user, the intermediate can be done basically passive; second, it is a relatively wide bandwidth, long distance operator fits Suppliers of large-scale use manner; and third, because it was carried on the fiber business, and there is no problem; fourth, because of its relatively wide bandwidth, supported protocols more flexible; fifth, with the development of technology including point, 1.25G and FTTH have developed a way to function relatively well. In the optical access family, as well as 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-service areas and so on. Optical fiber connected directly to the user's home, the bandwidth, wavelength and the type of technology transfer without restrictions, suitable for introducing a variety of new services, is the ideal business transparent network is the ultimate way to access network development. Although the development of mobile communications at an alarming rate, but because of limited bandwidth, the terminal can not be too much volume, the display is limited and other factors, people still pursue a fixed terminal performance is relatively dominant, which is hoped to achieve FTTH. Fiber to the home's charm lies in its great bandwidth, it is the solution from the Internet backbone to the user's desktop, "last kilometer" best of bottlenecks. With the upgrading of technology, greatly reduce the cost of fiber to the home, will soon be reduced considerably with DSL and HFC networks, which makes FTTH practical application as possible. It is reported that early in 1997 the company began to develop Japan's NTT FTTH, leaving the number of users because the costs increase after 2000; to increase the number of US installed in mid-12 FTTH 2002 after years of over 200 percent. May FTTH market, the company has disagree: American AT & T companies are not optimistic about FTTH in OFC2004, the company that bandwidth is not a panacea, development of applications and content is the key, so a considerable period of time , FTTH market may be small; the US carrier Verizon, Sprint is more positive, and in the development of FTTH OFC2004 presented their plans and technical solutions. In China, FTTH is also imperative, experimental FTTH network has been carried out in Wuhan, Chengdu and other cities, it is expected around 2012, in the country from the coast to the interior, from east to west will rise FTTH climax building. You can say that FTTH is a fiber optic communication highlights, along with the corresponding technical maturity and practical, cost can be further reduced to a sustainable level home, FTTH big trend is unstoppable. In addition, FTTH technology is still used to solve the "last kilometer" information highway in question. FTTH + Ethernet over ADSL (ADSL re-dialing time will establish the maximum theoretical 8Mbps download bandwidth, this bandwidth will never change, but in fact the noise detection mechanism ADSL line conditions are not good, if it is clearly beginning to establish a connection can not reach the theoretical value, may finally be 5Mbps, this bandwidth is also not change.) and ISDN (European popular form of telephone network) transmission speed much faster?