1.The three systems of the fiber access network are FTTN, FTTC and FTTH, respectively. In the process of network development, each structure has its application advantages, in the network to the whole business process, each structure is a key part. The benefit of FTTN is that it will further push fiber to the user network. It builds an access platform that provides voice, high-speed data and video services to a large number of homes without the need to completely rebuild the access loop and distribute the network. According to the demand, you can add a plug-in at the fiber node, you can provide the required business. FTTN will be superimposed on and used with existing copper distribution networks before moving fiber nodes to roadside FTTC or home (FTTH) due to business-driven or network rebuilds.
2.The basic requirement for this network structure is to provide broadband data services and video services, the distance between nodes and residential should be in the range of 4000 to 5000 feet. And today's nodes generally serve distances of up to 12,000 feet. Therefore, each service area needs to set up three to five FTTN nodes.
FTTC has several advantages over FTTN. When FTTC rebuilds an existing network, it is possible to eliminate the latency and interference that may be caused by cable transmission. It makes the fiber deeper into the user network, which reduces potential network problems and degrades performance due to field operations. At present FTTC is the most robust and "deployable" network, is the future can evolve into the FTTH network. It is also the new district and the reconstruction of the most economical network construction program.
3.One drawback of this network architecture is the need to provide a copper system power supply system. A remote power supply system at the central office can supply 50 to 100 roadside optical network units. Each roadside node uses a separate power supply unit at a very high cost and can affect the user's business requirements for a long time.
As the final form of network to provide fiber-to-the-home, FTTH removed the entire copper facility: feeder, wiring and lead-in. For all broadband applications, this structure is the most reliable and long-term future solution. It also eliminates all the maintenance work required for the copper wire and greatly extends the network life. Fiber Broadband Architecture Fiber Broadband Architecture The end of the network connection is the user premises equipment. At the user's home, a network terminating device is required to convert bandwidth and data streams into receivable video signals, data services, and voice services.