略語大辞典 [C] 18 AAU ATM(asynchronous transfer mode) access unit 非同期転送モード接続装置. 光ファイバー情報通信網の装置.ATM(asynchronous transfer mode) access unit; a unit for fiber-optic information networks; ref. BDU(broadband distribution unit); [C:Ind]. 丸善「略語大辞典」JLogosID : 11864255