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Today’s society has entered the information age, people besides the traditional telephone, fax and data communications needs, such as computers and communications, high-speed data communications, video conferencing, e-mail, and multimedia communications to a higher demand. In recent years in particular, the United States launched a national information infrastructure (National Infrormation Infrastructure, or NII, that is, the information superhighway) plans, it is looking for any place on Earth at any time with anyone, in any way exchange of information . In other words, the communications network will be in the digital, broadband, intelligent, and personal direction. The modern communications network mainly by the transmission network, exchange, access three major components of China’s communication network, transmission network in recent years through the development of one, two and Route large and medium-sized cities, so trunk has been basically achieved in digital, fiber; exchange network will also achieve the basic program-digital, and access network is often said that the network users are developing slowly. With the transmission network, exchange of high-speed network development will inevitably promote the rapid development of access network. However, the access network is the entire communication network building technology complex, difficult to implement, very, high investment costs, the affected areas, is also part of the key, access network will become a communication network construction in the "bottleneck." Papers in the definition of broadband access network, the main features and key technology in detail, as is mainly directed against the city of Tianjin Netcom to six districts Access Network Planning and Design, the city of Tianjin Netcom six districts Broadband Access Network status quo Group net basis, network security and management has done a detailed briefing.This paper is the main city of Tianjin Netcom six districts access network planning and design. To achieve the end-user to provide comprehensive, reliable, secure network services, broadband high-speed Internet access, local area networks and other Internet-based broadband access network business, and achieve the purpose of corporate profits. This paper focuses on six areas the city of Tianjin Netcom Broadband Access Network Group net basis, access to technology and access network based on the security and management. Tianjin Netcom how to solve the "last mile" problem of communication, on a personal point of view.
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