function management data(FMD)

In SNA, an RU category used for enduser data exchanged between logical units (LUs) and for requests and responses exchanged between network services components of LUs, PUs and SSCPs.; 在系统网络体系结构(SNA)中,一种请求/应答单元数据类,用于在逻辑单元(LU)之间交换 的最终用户数据,并用于LU、PU(物理单元)和SSCP(系统服务控制点)的网络服务部件之间进 行交换请求和应答。