PSTN

常见例句

How to switch VoIP and PSTN mode on my phone set ?
请问我要在话机上如何操作，才能切换网络电话与传统市话的线路呢?
PSTN?Public?switched?telephone?network?
公共电话交换网?
Frequently, the medium that is used in the PSTN is copper.
PSTN中常用的介质是铜线。
The process of setting up a data transfer on a PSTN line.
在公用电话交换网（PSTN）线路上建立数据传输的过程。
Then I began to think how much a low cost PSTN phone is.
我就想啊，一个低成本的普通电话到底要多少钱呢？
It can make your analog telephone ring for Skype or PSTN calls.
体积玲小，网络电话与市话两用合为一体；