Terminal system having both ATM terminal function and ATM-based-ADSL terminal function and method therefor

摘要

A terminal system having both an asynchronous transfer mode terminal function and an asynchronous transfer mode-based asymmetric digital subscriber line terminal function and method therefor that includes a physical media dependent sublayer of an asynchronous transfer mode network, a physical media dependent sublayer of an asymmetric digital subscriber line network, and a transmission conversion portion. The transmission conversion portion converts serial data input through a connected physical media dependent sublayer into parallel data to transfer the converted parallel data, and receives parallel data and converts the parallel data into serial data to transfer the converted serial data to the connected physical media dependent sublayer. A cell segmentation and reassembly portion assembles the parallel data transferred from the transmission conversion portion to change the assembled data into user information, and divides user information to be transmitted by a user into predetermined data cells to output the data cells to the transmission conversion portion.