华为新员工内部GPRS核心网培训资料，主要讲述GPRS核心网的架构-Huawei' s GPRS core network internal training materials

中兴-GPRS原理培训手册,文档详细描述了整个GPRS的构成架构及数据交换原理，希望对大家有用。-ZTE-GPRS principle of training manuals, documents GPRS is described in detail the composition of the whole structure and data exchange principle, useful for all of us hope.