DEVICE FOR PROCESSING SUBSCRIBER OF ADSL IN ATM EXCHANGE

PURPOSE: A device for processing a subscriber of an ADSL(asymmetric digital subscriber line) in an ATM(asynchronous transfer mode) exchange is provided to service various multimedia application programs having a higher asymmetric data transmitting speed to the subscriber at long distance from an ATM exchange. CONSTITUTION: A processing unit of transmitting cell(730) outputs to a processing unit of ATM physical layer after temporarily storing by converting a VPI(virtual path identifier) and a VCI(virtual channel identifier) in a point-to-multi point receiving by receiving a transmitting cell from a matching unit of transmitting and receiving cell bus. A processing unit of receiving cell(750) outputs to the matching unit of transmitting and receiving cell bus after temporarily storing by analyzing a receiving cell inputted from the processing unit of ATM physical layer. The processing unit of ATM physical layer(720) outputs in parallel into a control unit of receiving cell by processing the cell serially inputted to a processing unit of ADSL. The processing unit of ADSL(710) outputs to an ADSL line by processing a serial data received from the processing unit of ATM physical layer in the ADSL transmission, and outputs to the processing unit of ATM physical layer. A matching unit of transmitting and receiving cell bus(770) is contacted in the processing unit of transmitting cell and the processing unit of receiving cell and forms a loop-back path of the transmitting and receiving cell or matches in the transmitting and receiving cell. A matching unit of control signal bus(760) is matched with both port RAMs through a local bus, receives a clock signal from the control signal bus, and outputs a functional alarming signal and a release alarming signal through the control signal bus.