随着单片机在网络应用中的快速发展,单片机实现web服务器的技术也日趋成熟,但随之而来的就是以后的更多应用都要求单片机在作为web服务器的同时也可以使用adsl上网,所以单片机的拨号功能也将成为今后的热点,本文介绍了一个实际系统中实现的拨号器及关键的源代码,对其它不同类型的单片系统的实现有极大的参考价值。 With the rapid development of SCM in network applications, the technology of SCM to realize web server has matured, but the subsequent application requires that SCM can also use adsl to access the Internet as a web server. Therefore, SCM Dialing function will also become the hot spot in the future. This paper introduces a real system dialer and the key source code. It has a great reference value for the realization of other different types of single chip system.