The intelligent combination of advanced technology and the public switched telephone network PSTN offers greater possibilities of optimization and promotion of home.
先进的科技和公用电话交换网pstn的结合为智能化家居的优化和推广提供了更大的可能性。
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。
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