To effectively perform a band control and a priority control in a transmitter for transmitting ATM (Asynchronous Transfer Mode) data by using a plurality of channels [CBR (Constant Bit Rate), VBR (Variable Bit Rate), ABR (Available Bit Rate) and UBR (Unspecified Bit Rate)] having different bands. 異なる帯域を有する複数のチャネル(CBR、VBR、ABR、UBR)を使用してATMのデータを送信する送信機で、効果的に帯域制御や優先度制御を行う。 - 特許庁