English translation for "同线电话用户间互叫机键"

reverting call switch

Similar Words：

"同线电话分机" English translation, "同线电话继电器组" English translation, "同线电话模块" English translation, "同线电话线" English translation, "同线电话业务" English translation, "同线电话用户设备" English translation, "同线电话用户识别电路" English translation, "同线电话振铃电键" English translation, "同线电话制" English translation, "同线分析" English translation