Patent ID: 6075788
Filing Date: 2000-06-13
Classification: H04J,H04Q,Y10S

Abstract:
A method of formatting a data unit within a single integrated circuit for transmission over a Synchronous Optical Network (SONET), the method comprising:receiving a plurality of Asynchronous Transfer Mode (ATM) cells at a first port of the single integrated circuit, wherein each cell has a cell header field and a cell payload field and wherein the data unit is segmented within the cell payload fields;extracting the data unit from the plurality of ATM cells;forming a Point-to-Point Protocol (PPP) frame having a PPP payload field and placing the extracted data unit in the PPP payload field;forming a SONET frame having a synchronous payload envelope (SPE) and loading at least a portion of the PPP frame into the SPE; andpassing the SONET frame to a second port of the single integrated circuit.