Motorola’s GGSN platform compliant with 3GPP standards (R5 & R6) architecture and functionality. The GGSN is the logical point of Public Data Network (PDN) interconnection to a GPRS network supporting the Gi reference point. This interface provides access by Mobile Subscribers (MS) to one or more external PDNs. For a given PDP context, the MS is always anchored to one GGSN as it moves amongst different SGSN nodes. The GGSN provides network access to external hosts wishing to communicate with mobile subscribers. The GGSN directs mobile-terminated packets to the SGSN that is currently serving the MS, allowing the MS to move freely within the coverage area of its home or foreign network. Motorola’s GGSN benefits include: common IP router platform supporting 2G and 3G access technologies, single point code with highest PDP context and dynamic load balancing.
