| 摘要 |
PURPOSE: An apparatus for transmitting broadband data using a bidirectional ADSL(Asymmetric Digital Subscriber Line) transmission apparatus is provided to transmit the broadband data with Nx(5-9)Mbps level by using a plurality of bidirectional ADSL transmission apparatuses and telephone lines and multiplexing ATM(Asynchronous Transfer Mode) cells in the last output terminal to be composed as one data path. CONSTITUTION: A multichannel ATM cell multiplexer(10) multiplexes a plurality of ATM cells inputted through a plurality of bidirectional ADSL transmission modules(30-1¯30-n) and outputs one ATM cell to the last output terminal. A multichannel ATM cell demultiplexer(20) distributes a plurality of ATM cells inputted through an ATM cell bus to be suitable for sequence and outputs he distributed ATM cells to a plurality of bidirectional ADSL transmission modules(30-1¯30-n). A plurality of bidirectional ADSL transmission modules(30-1¯30-n) bidirectionally secure a same band, multiplexes the ATM cells in the last output terminal, and perform a bidirectional same band service. A system control unit(40) controls the multichannel ATM cell demultiplexer(20) and a plurality of bidirectional ADSL transmission modules(30-1¯30-n).
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