In ACF/TCAM, a character string that matches a definition in the key table. This key identifies the destination of a message or special processing to be done on that message. It can also identify a station, logical unit(LU), or application in the network.

• 在IBM的联网通信软件ACF/TCAM中，一种“与键表中的某一定义相匹配的”字符串，用以标明既定报文的收信方（简称收报方）或对该报文应做何种特殊的处理，也可以标识网络中的工作站、逻辑单元（LU）或应用程序。