Defines the requirements and the quality assessment procedure forthe sub-family. Type OCCA-BU is a connector set of the male andfemale configuration. It features a connector set for use inslide-in units with cylindrical, springloaded butting ferrules. Theoptical alignment mechanism is of the flexible sleeve style and isself-contained within the female connector.The contents of the corrigendum of May 1996 have been included inthis copy.