English translation for "ring back signal"

回铃信号

Similar Words：

"ring back" English translation, "ring back apparatus" English translation, "ring back coil" English translation, "ring back key" English translation, "ring back sight" English translation, "ring back telephone set" English translation, "ring back test function" English translation, "ring back tone" English translation, "ring back tone connection" English translation, "ring back trunk" English translation