The basic communication model of IP Phone and the framework of connecting PSTN and Internet are presented.
IP Phone的基本通信模式，与现存的电话网络及国际互联网的连接框架结构。
参考来源 - IP Phone的技术原理及展望 On Principles of IP Phone Technology and Its Future·2,447,543篇论文数据，部分数据来源于NoteExpress
ABBREVIATION for public switched telephone network: the conventional message switched telephone network 公用交换电话网
PSTN signaling USES tones generated by the phone to begin or end a call.
PSTN信令通过使用手机产生的声调来开始或结束通话。
This paper introduces the method to implement the remote networking with PSTN.
介绍了使用PSTN实现远程联网的方法。
Still im-age is at first compressed by using JPEG algorithm, and then transfered via PSTN.
图像经JPEG压缩后通过公众电话网进行远程传输。
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