The existing network has been unable to meet the rapidly growing business needs, and a new type of Broadband backbone network to carry these fast-growing services. With the rapid development of modern telecommunications, computer and Internet technologies, data, voice, video and other business transmissions are constantly growing and showing a convergence trend. The backbone network is composed of multiple transmission methods and multiple protocol combinations. The backbone network is generally a wide area network: the range of tens to thousands of kilometers. When describing the network structure, it is necessary to clearly understand the network topology, not the specific transmission method or protocol. "Backbone network" is usually a term often used to describe large-scale network structures. Other ISPs (Internet Service Providers) with access functions would have to go through these backbone networks even if they want to go abroad. These backbone networks are the Internet approved by the state and can be directly connected to foreign countries. The network that connects the cities is called the backbone network. Computers in the entire city are connected, which is the metropolitan area network. Several computers are connected to each other and can see other people's files. Different network providers have their own backbone networks to connect their networks in different regions. Each backbone network has at least one connection point for interworking with other backbone networks. Backbone Network is a high-speed network used to connect multiple areas or regions.
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