Patent ID: 7330471

Claim:
A multi-digital subscriber line access multiplexor system, connecting with an asynchronous transfer mode ATM network, linking with multiple data transmission service networks, and multiple subscriber receiving/transmitting units to perform subscriber line collection functions to enable a wideband high-speed data receiving/transmitting operation among the numerous subscribers, the system comprising: multiple ATM cell buses each accommodating ATM cell transmission; a network interface unit, including a plurality of ATM network connection ports, receiving data transmitted from the ATM network through corresponding ATM network connection ports, providing an ATM cell interface and transmitting the data on the multiple ATM cell buses, sequentially; a multiple xDSL service unit including multiple subscriber connection ports receiving ATM cells from the ATM network transmitted on the multiple ATM cell buses from the network interface unit, and providing a subscriber interface to transmit ATM cells to the subscriber receiving/transmitting units through corresponding subscriber connection ports, sequentially; a subscriber interface unit, including an extension shelf connection port connected with a subscriber extension shelf, receiving ATM cells from the ATM network transmitted to the multiple ATM cell buses by the network interface unit, and providing an extension shelf transmission interface to transmit the ATM cells to the subscriber extension shelf connected to the extension shelf connection port, sequentially; and a main control unit MCU controlling mutual operations and data flow among the network interface unit, the multiple xDSL service unit, the subscriber interface unit, and the multiple ATM cell buses.