Cisco ASR 5000 series Product Overview page 347

GGSN Support in GPRS/UMTS Wireless Data Services
How GGSN Works ▀
Figure 96. HA Assigned IP Address Proxy Mobile IP Call Flow
1. The Mobile Station (MS) goes through the process of attaching itself to the GPRS/UMTS network.
Cisco ASR 5000 Series Product Overview ▄
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