Ringing and tone for telephone automatic switching network 电话自动交换网铃流和信号音
Signal tone detection function 检测信号音功能
Signal tone board sig 信号音板
The test methods for the technical specifications of ringing and tone for automatic telephone switching network 电话自动交换网铃流和信号音技术指标测试方法
Cowboy the batoon has learned to count at least when he is hungry . dr . jack findley of the university of mary land has taught him to recognize five colors of lights each light stands for a certain number of beeps from a sound box 马里兰大学的杰克芬德利博士已教会它辨认5种灯光的颜色每种光代表共鸣箱发出的嘟嘟信号音的一个特定数字。
信号: signal; semaphore; gun音: sound调车信号音: shunting tone故障信号音: out of order tone; trouble back tone; trouble tone信号音板: signal tone board sig信号音监视: tone supervision信号音信道: tch tone channel联络线信号音: order wire tone特殊信号音信号: special-information tone signal ssi调车呼叫信号音: shunting calling tone检测信号音功能: signal tone detection function路由展接信号音: route advance tone无摘机信号,无拔号音: no dial tone发送特殊信号音信号: send-special-information tone signal表示广播开始的信号音乐: signature机车信号音响表示器: audible cab indicator收号器和信号音测试: receiver and tone test信号音与铃流发生器: tone and ringing generator电话自动交换网铃流和信号音: ringing and tone for telephone automatic switching network拨号音: dial signal; dialling tone; dt dial tone; dt dialing tone传号音: order tone空号音: number unobtainable tone; vacant number tone拨号音不断: non-stodial tone拨号音电键: dial tone key拨号音阶段: dial tone trunk