基于44b0使用ucos2.8操作系统的全部源码，成功移植了lwip1.1.1，ppp和gprs modem的驱动，可通过GPRSmodem实现网络通信-based on the use of 44b0 ucos2.8 all-source operating system, lwip1.1.1 a successful transplant, ppp and gprs modem driver, through GPRSmodem network communication

gprs modem网络通讯编成,gprs modem网络通讯编成