Service Request in 3G

The MS initiates the ‘Service Request’ procedure in order to establish the ‘PS signaling connection’ between the MS and the

Gn Interface and Gp Interface

Gn/Gp interface, is the interface between the SGSNs and the GGSNs. ‘Gn interface’ is the interface between the SGSNs and

Roaming Architecture in 2G/3G

To understand Roaming architecture in GPRS, there are a few terms we have to understand, Outbound roaming The outbound roaming