function management data(FMD)
In SNA, an RU category used for enduser data exchanged between logical units (LUs) and for requests and responses exchanged between network services components of LUs, PUs and SSCPs.; 在系統網絡體系結構(SNA)中,一種請求/應答單元數據類,用于在邏輯單元(LU)之間交換 的最終用戶數據,并用于LU、PU(物理單元)和SSCP(系統服務控制點)的網絡服務部件之間進 行交換請求和應答。