High-speed Internet access and for telecom network applications， greatly promoted the development of Access is an important part of telecommunication From the perspective of the theory of copper and fibre， summarizes the characteristics of wireless access technology and Also according to the cities， based on the status of the access of hierarchical planning model， optical access to access the main city fiber distribution layer， such planning and design are Also introduced from actual Angle access layer， convergence layer core， as required from six aspects: xDSL access system design should pay attention to the direction and And to the school， family， hotel and examples， the most mature technique most widely used ADSL
