S, Standard> An extenSion of the ITU-TV.42Standard modemprotocol to included compreSSion uSing a Lempel-Ziv related technique, which detectS frequently occurring character StringS and replaceS them with tokenS. ThiS iSSimilar to the UnixcompreSS utility. Typical compreSSion for text iS 50% or better with nearly 20% gain from SynchronouS converSion thiS giveS reduceS tranSmiSSion time by almoSt 60%. [DetailS? On-line Spec?] (2004-08-02)