COMMUNICATION SYSTEM AND FRAME RELAY NETWORK FOR TRANSFERRING DATA AND METHOD FOR TRANSFERRING DATA PACKET

摘要

PURPOSE: To provide a modular switching architecture for a high-speed packet network. CONSTITUTION: A line interface device LID 40 of the architecture gives frame data in the HDLC form and a clock to a frame relay packet management device FRYPAM 44. The reception FRYPAM 44 performs CRC check, table look-up, and DLCI field conversion to write reception frames having correct FCS fields in a frame buffer and communicates with another FRYPAM 54 to update a transmission queue. A transmission FRYPAM 54 reads out frames from a buffer 46 to send them to a transmission LID coupled to a destination. The transmission LID 50 converts HDLC data to a proper form to transmit frames to the destination terminal. A frame buffer manager 62 assigns the buffer 46 to the FRYPAM 44.