Part of the GPRS infrastructure, the SGSN provides switching functionality, security and authentication via the HLR for GPRS users. The SGSN’s primary interfaces are with the GGSN, HLR and PCU.
SGSN (Serving GPRS Support Node)
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Woffice comes with several built-in demos that you can install in one single click. You can test the available demos here and feel free to challenge any presented feature.