（51）公用交换线路（Public switched lines）：公用的数据传输线路，一般指公共电话线路。通过它人们可以从一台计算机访问到另一计算机的数据或者向另一台计算机传输数据。
基于4个网页-相关网页
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。
The number of telephone lines connecting the subscriber's terminal equipment to the public switched network and which have a dedicated port in the telephone exchange equipment.
连接用户终端设备和公用交换网并具有一个电话交换设备专用端口的电话线数。
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。
应用推荐