Definitions for "FGB"
feature group B. (1) A dial-up service that gives no hardware answer code which means call timing may be inaccurate. (2) A service that uses off-network access trunks (ONAT) which eliminate most off-network access line difficulties and greatly improve transmission quality (for local offices).
Keywords:  russian, cargo, acronym, station, block
Functional Cargo Block (for the International Space Station; acronym is from the Russian term)