Patent ID: 7277447
Filing Date: 2007-10-02
Classification: H04J

Abstract:
1. In a digital optical network, a method of buffering and reading path overhead bytes, comprising: identifying a plurality of path overhead bytes as they are received; selecting a subset of path overhead bytes from said plurality of path overhead bytes; determining a signal number (S#) for each byte of said subset of path overhead bytes; determining a path overhead number (P#) for each byte of said subset of path overhead bytes based on which one of said path overhead bytes is selected; storing path overhead bytes, signal numbers (S#), and path overhead numbers (P#) into a RAM FIFO buffer, wherein the RAM FIFO comprises a plurality of entries, each entry comprising a first section for storing a path overhead byte, a second section for storing a signal number (S#), and a third section for storing a path overhead number (P#); and reading said entries from the RAM FIFO, wherein said entries are stored and read from the RAM FIFO in accordance with a first-in-first-out (FIFO) protocol.