دانلود کتاب GPRS

Now you can get accurate, crystal clear information on lightning fast, always-on GPRS, the 2.5G technology that's setting the pace today in handheld Internet access. You'll find it in GPRS: General Packet Radio Service, the first and only guide to answer such fundamental questions as "What is it?" "How does it work?" and "How much is it going to cost me?" The author, telecom expert and best-selling writer R.J. "Bud" Bates, reveals GPRS's features, functions, and architecture, information crucial whether you're providing or applying GPRS. His straightforward, abundantly illustrated, step-by-step presentation of how GPRS works, how it connects the Internet, and how to implement it will help you put GPRS in place quickly and profitably as you explore: * The complete layout of GPRS system architecture * The function of GPRS elements * Interfaces - radio and MS-PCUSN, MS-SGSN, PCUSN-SGSN, SGSN-GGSN, and GGSN-PDN"