略語大辞典 [C] 16 CR call request (packet) (データ通信のパケット交換での)発呼要求(パケット信号). DCEに発呼(呼び出し)を要求するメッセージ信号.call request (packet); in a packet data communication; ref. CC(call connected),CI(clear indication), CF(clear confirmation), CN(call incoming), CA(call accept), CQ(clear request), SQ(restart reque 丸善「略語大辞典」JLogosID : 11870276