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. There are many types of broadband, let's follow the Shenyang company to find out ADSL broadband network: ADSL is the English Asymmetrical Digital Subscriber Loop (Asymmetric Digital Subscriber Loop) abbreviation, ADSL technology is a new operation in the original ordinary telephone line Shenyang high-speed broadband technology broadband subscription, which uses existing telephone copper wire pair, to provide users on asymmetric downlink transmission rate (bandwidth). Asymmetric mainly reflected in the uplink rate (up to 640Kbps) and downstream rate (highest 8Mdps) asymmetry. Upstream (from the user to the network) for low-speed transmission, up to 640Kbps; downlink (from the network to the user) for high-speed broadband transmission Shenyang, up to 8Mbps. It was originally mainly developed for video-on-demand business broadband deals Shenyang, Shenyang along with the development of technology broadband prices, and gradually become a more convenient broadband access technology, the importance of the telecommunications sector. Internet TV set-top box can be achieved at a low rate of many previously unattainable network applications. Shenyang broadband prices _ abundance and Information Technology Center (certified) _ Shenyang Shenyang broadband provided by 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.