switched telephone network

• 电话交换网

switched telephone network的用法和样例：

例句

1. A term applied to a data transmission carried on the public switched telephone network and initiated by dialing the telephone number of the receiving station.
   应用于普通开关电话网数据传输上的术语，指拨通某接收站的电话号码就能访问该系统的性质和动作。