RNR packet RNR

A packet used by a data terminal equipment (DTE) or by a data circuit  terminating equipment (DCE) to indicate a temporary inability to accept additional packets for a virtual call or permanent virtual circuit.; 數據終端設備(DTE)或數據電路端接設備(DCE)使用的信息包，用來表示暫時無法接收虛擬呼叫或永久虛擬電路的附加信息包。