GPRS
General Packet Radio Service
GPRS is defined by 3GPP (Third Generation Partnership Project) and is employed to connect mobile cellular users to PDN (Public Data Network). Within the GSM network it shares the network databases and radio access network and employees functions known as the PCU (Packet Control Unit), SGSN (Serving GPRS Support Node) and GGSN (Gateway GPRS Support Node) to provide packet switching data services across the fixed and radio network.
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