通过对GPRS网络结构、工作原理、数据传输平台和PPP协议的认识的基础上，实现GPRS模块PPP拨号上网的功能。
Through GPRS network structure, operating principles, data transmission platform and PPP agreement on the basis of understanding and achieving GPRS module PPP dial-up functions.
通过对GPRS网络结构、工作原理、数据传输平台和PPP协议的认识的基础上，实现GPRS模块PPP拨号上网的功能。
Through GPRS network structure, operating principles, data transmission platform and PPP agreement on the basis of understanding and achieving GPRS module PPP dial-up functions.
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