Shenyang Broadband Broadband ask you about the basics: Broadband networks can be divided into three parts: the transmission network, switching networks, access networks. Broadband transmission network mainly in SDH (synchronous digital hierarchy) based on high-capacity fiber optic network; broadband switching network is an integrated services digital network ATM (Asynchronous Transfer Mode) technology; broadband access network mainly fiber access, copper access in, hybrid fiber / copper access, wireless access. Broadband network technologies are divided into three categories: transmission technology, switching technology, access technology. Shenyang Broadband for everyone describes how a simple treatment broadband router failure of a business promotion, how to determine the source of the problem is usually a router or broadband home phone or computer can not access, and will consider business broadband optical router is a router if you are unsure problem, you can use the process of elimination, to rule out whether the problem is a broadband service provider, you can first router wan port interface cable directly into your computer dial-up connection, if not connected, which means that the problem lies in the broadband service provider, call appropriate broadband service providers customer service phone repair can be, if you can connect on, it means that the problem lies first router to the computer this small LAN. After determining the problem between this router to the terminal, it can be further processed. Business broadband promotions, abundance and Information Technology Center (certified), enterprise broadband provided by the Shenyang City HSBC and IT center. Shenyang abundance and Information Technology Center (www.4000010001.com) (www.tz1288.com) Liaoning Shenyang, e-commerce leader, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, the maximum meet customer needs. IT center in abundance and leadership with the staff warmly welcome all inquiries negotiations to create abundance and IT center a better future.