GSM和GPRS信令详解 ABIS BTS BSC (PCU) Gb A Gs SGSN Gr HLR VLR MSC MAP-D MAP-C MAP-E Gd Gc Gn Gi Gn Gp GGSN GGSN GGSN PDN PLMN EIR GPRS SM-SC SMS-GMSC SMS-IWMSC PSTN Um
As we move into a world where mobile devices are becoming the primary mechanism for people to connect with the Internet, it should come as no surprise that the ability to develop applications for mobile devices is becoming a sought after skill. We a
Elasticsearch makes it easy to add efficient and scalable searches to enterprise applications. Busy administrators and developers love this open source real-time search and analytics engine because they can simply install it, make a few tweaks, and
A self-respecting Google hacker spends hours trolling the Internet for juicy stuff. Firing off search after search, they thrive on the thrill of finding clean, mean, streamlined queries and get a real rush from sharing those queries and trading scre
