Many media can be used as a transmission medium used in mobile phones, but the media themselves have different properties, for different environmental conditions. While mobile phone business itself will use transmission medium different requirements. Therefore, there is a wide variety of transmission media note panel red rice recovery in a real environment, the following are three types of common transmission medium. Wired cable: phone cable common include unshielded twisted pair cable, shielded twisted pair and coaxial cable. Advantages Over Cable is a low cost, easy to install; drawback is the limited frequency spectrum, and inconvenient to move after installation. Cable is wired phone (for example, access networks) The most common transmission medium. On the other hand, the use of wireless media significant advantage is building a network fast and mobility, support is good, the drawback is even lower than the spectral width of the cable. In addition, the cost of using the wireless medium sometimes far higher than wired media with ripe red rice 1S phone panel recycle this great thought, Morse succeeded by the current of 'pass' 'OFF' and 'long break' to instead of the human character is transmitted, which is famous Morse code. In 1843, Morse received a $ 30,000 grant, he used this money to build became a telegraph from Washington to Baltimore line panel recycling oppo phone, length of 64.4 kilometers. May 24, 1844, in a packed Capitol, Morse with his hands trembling with excitement, he devoted more than ten years to manipulate the successful development of the telegraph efforts to Baltimore sent 64 kilometers outside The first telegraph in human history God created what miracle! 'Invention of the telegraph, telecommunications era kicked off, creating a human use electricity to transmit information history. Since then, the speed of information transmission is greatly accelerated. 'Tick a tock' sound of <1 second:! Telegraph carrying information can be transmitted by people around the earth one mile -1.609344 kilometers. Ball took seven laps and a half, this speed is the past, any kind of phone tools can not. Here, there is a story to be mentioned panel recovered after 1912 'Titanic' struck an iceberg, issued a telegram: '305, the speed, we hit an iceberg. California's number ferry 'a few miles away,' this should be able rescued hundreds of lives, but the radio operator on the ship is not the Samsung phone panel recycling S6, Obo Electronics (certification), Guizhou panel recovered from Shenzhen Aobo Electronics Technology Limited. Shenzhen City Aobo Electronic Technology Co. (www.aobodz.com) is Shenzhen, the other leaders, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs. In Obo electronic leadership with the staff warmly welcome all inquiries negotiations to create a better future for electronic Obo.