SGSN - Serving GPRS Support Node

The SGSN forms part of the PS core network, providing mobility and session management services to subscribers. This requires the SGSN to hold subscriber data associated with user identification and location. The SGSN facilitates connectivity between the UTRAN/GERAN and the GGSN, generating billing information if required.


  • Fully interactive 3GPP based network map
  • Narrated call flows
  • Detailed network procedures

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