To introduce the basics of professional mobile phone handset LCD recycling, and recalled a brief history of mobile phone technology; the main principles and characteristics of wired, wireless and microwave transmission; all kinds of switching technology development and evolution; the concept of network access and related application methods. From the basic concept of mobile technology and mobile systems starting recalled the beginning of the current generation of mobile phone technology for centuries the most representative types of mobile phone recycling way millet phone LCD screen, lay the foundation for future learning. Twisted pair, coaxial cable, optical fiber, cable and other common cable transmission, and its physical characteristics, operational transmission capacity, anti-interference ability to do a detailed analysis. The basic concepts of modern technology in the exchange of packet switching technology, frame relay technology, soft-switching technology Apple phone LCD screen recycling, switching pull technique, multilayer switching technologies, working methods. Using photonic technology to achieve optical switching technology in all-optical network. In terms of the type of technology, working principle, the exchange of the way, and so do the narrative. Access network technology, the origin, definition, physical location, type of business and the main interface, to help readers build the whole concept of access network. Copper-based access technology mobile phone LCD screen recycling, from the traditional access from access to a detailed analysis of the various stages of a typical representative of technology and its characteristics. Fiber access technology, optical fiber access as the "last mile" of the best programs in this chapter from the fiber access networking to? Tintin X Series application systems were introduced. Wireless access technologies, covering wireless local loop, mobile cellular access, satellite access, etc., trying to wireless access technologies macro generalizations. Millet phone LCD screen LCD screen Shenzhen mobile phone recycling _ _ Obo electronics recycling is provided by Shenzhen Electronic Technology Co., Obo. Shenzhen Electronic Technology Co., Obo (www.aobodz.com) strong, credible, in other industries, Guangdong Shenzhen accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Obo electronics and you hand into the brilliant, for a better future!