IMSI\ Attach
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IMSI attach — In a GSM network, when a Mobile Station or (MS) is switched on, the International Mobile Subscriber Identity, or IMSI attach procedure is executed. This procedure is required for the MSC/VLR to register the mobile station in the network. If the… … Wikipedia
IMSI-catcher — An IMSI catcher is a device for forcing the transmission of the International Mobile Subscriber Identity (IMSI) and intercepting GSM mobile phone calls.The GSM specification requires the handset to authenticate to the network, but does NOT… … Wikipedia
Mobility management — This article is about wireless communication. For mobility management in public transport, see Transportation Demand Management and Transit oriented development. Mobility management is one of the major functions of a GSM or a UMTS network that… … Wikipedia
Network switching subsystem — (NSS) (or GSM core network) is the component of a GSM system that carries out call switching and mobility management functions for mobile phones roaming on the network of base stations. It is owned and deployed by mobile phone operators and… … Wikipedia
GPRS Core Network — The GPRS core network is the central part of the General Packet Radio Service which allows 2G, 3G and WCDMA mobile networks to transmit IP packets to external networks such as the Internet. The GPRS system is an integrated part of the GSM network … Wikipedia
