This paper analyzes the ring detection, DTMF codec and power line carrier and the realization of the principle of the program.
本文分析了振铃检测、DTMF编解码和电力线载波的原理及实现方案。
This paper analyzes the ring detection, DTMF codec and power line carrier and the realization of the principle of the program.
本文分析了振铃检测、DTMF编解码和电力线载波的原理及实现方案。
应用推荐