ITU-T SERIE G SUPP 28 SPANISH-1984 对复用转换器,频分多路复用(FDM)的编解码器的应用,数据语音(DIV)的语音系统和数据(DOV)从模拟到数字的过渡期间系统网络
Application of transmultiplexers, FDM codecs, data-in-voice (DIV) systems and data-over-voice (DOV) systems during the transition from an analogue to a digital network