basic function of Serving GPRS Support Node

Very basic function of Serving GPRS Support Node:

At the same hierarchical level as the MSC.

Transfers data packets between mobile stations and GGSNs.

Keeps track of the individual MSs’ location and performs security functions and access control.

Detects and registers new GPRS mobile stations located in its service area

Participates into routing, as well as mobility management functions.