PSTN Public Telephone Switched Network

The number of lines and traffic of the Public Switched Telephone network (PSTN) network have also been decreasing.

公共电话交换网(PSTN)的线路和流量也在减少。

It is most extensively used Lines of Communication to Public Switched Telephone Network (PSTN), hence the video surveillance system based on PSTN possesses widespread application prospects.

公共电话交换网(PSTN)是最广泛使用的通信线路，因此在PSTN线路上传输视频具有广阔的应用前景。

A new ECG teletransmission system based on embedded modem and public switched telephone network (PSTN) is presented, which consists of family unit, PSTN and center workstation.

本文介绍了一种通过嵌入式调制解调器与公共电话网实现心电数据远程传输的系统，系统由家庭单元、公共电话网和中心工作站组成。