数字信号: digital signal方式: way; fashion; pattern数字式传号空号信号方式: digital mark space signaling数字用户线路信号方式: digital line signaling信号方式: signal aspect数字信号: digit signal; digital signals; ds digital signal; numeral signal; numerary signal; numerical signal数字信号谱: digital signal spectrum数字信号图: digital signaling diagram编译信号方式: compiled signalling长途信号方式: trunk signaling带间信号方式: interband signaling带内信号方式: inband signalling带外信号方式: out band signalling; out of band signaling单频信号方式: uniwave signaling单音信号方式: tone signaling对应信号方式: associated signaling多频信号方式: multifrequency signalling分散信号方式: decentralized signaling干湿信号方式: wet dry signaling互控信号方式: compelled signaling集总信号方式: en bloc signaling交叠信号方式: overlap signaling; overlap signalling局内信号方式: intra-exchange signaling开路信号方式: open circuit signaling零频信号方式: zero frequency signaling
