演示怎样取电话来电显示号码，拨出号码，摘挂机状态，震铃状态,以及怎么进行电话录音。同时硬件系统提供一定的软件加密措施，通过得到硬件的序列号可以有效的保护你的软件。相信加入来电后的系统可以使你的软件功能成倍增加。-Demonstration of how to get caller ID phone number, allocated numbers, pick onhook state, Chun-ling state, as well as how to conduct telephone r