A simultaneous voice plus data modem,operating at a voice plus data signalling rates of 4800bit/s,with optional automatic switching to data-only signalling rates of up to 14400bit/s,for use on the general switched telephone network and on leased point-to-
在公用电话交换网上和点对点二线租用电话型电路上同时传送语音和数据的调制解调器(仅传输数据时数据传送速率高达14400bit/s,同时传送语音和信号速率为4800bit/s的数据)A simultaneous voice plus data modem,operating at a voice plus data signalling rates of 4800bit/s,with optional automatic switching to data-only signalling rates of up to 14400bit/s,for use on the general switched telephone network and on leased point-to-数据通信,调制解调器