Compression methods for packetized sonet/sdh payloads

Abstract

A method for compressing a packetized SONET/SDH stream for transmission over a packet switched network, comprising identifying a C2 byte in the stream, and, based on the identification, applying a C2 byte-related compression algorithm to compress the stream. The C2 byte is either extracted by a packet processor from a packet payload or header, pre-configures within an ingress packetizer, or identified automatically from examining the SONET circuit sent from an egress packetizer back to an ingress packetizer. Various embodiments of the compression algorithms include algorithms based on identifications of unequipped C2=0x0, virtual tributaries C2=0x02, HDLC C2=0x16, PPP C2=0xCF, and asynchronous DS-3 C2=0X04.

Dependencies are inferred from the claim text.