English translation for "数字电话电路业务"

digital telephone circuit service

Similar Words：

"数字电表" English translation, "数字电磁测深仪" English translation, "数字电导仪" English translation, "数字电荷耦合掐" English translation, "数字电话" English translation, "数字电话机" English translation, "数字电话交换机" English translation, "数字电话交换局" English translation, "数字电话交换业务" English translation, "数字电话设备" English translation