http://www.rfc-editor.org/rfc/rfc1967.txt
RFC 1967: PPP LZS-DCP Compression Protocol (LZS-DCP), K. Schneider, R. Friend1996-08-01T23:00:00-00:00This document describes the use of the Stac LZS data compression algorithm for compressing PPP encapsulated packets, using a DCP header [6]. This memo provides information for the Internet community. This memo does not specify an Internet standard of any kind.