user agent entity (UAE)
An entity in the UAL of the Application Layer that controls the protocol associated with cooperating UAL services. It exchanges control information with the MTAE or SDE in the layer below. The control information is the information the MTL requires to create the appropriate envelope and thus provide the desired message transfer service elements.; 應(yīng)用層的用戶代理層(UAL)中的一個實體,該實體對與UAL服務(wù)相關(guān)的協(xié)議進行控制.它同該層下面的報文傳送代理實體(MTAE)或托付和交付實體(SDE) 交換控制信息.該控制信息是報文傳送層(MTL)需要創(chuàng)建適當封裝的信息,因而可提供希望的報文傳送服務(wù)元素