NSAPI and TI – PDP identifiers

NSAPI NSAPI refers to ‘Network layer Service Access Point Identifier’. The MS generates the NSAPI in the ‘PDP context activation’ procedure,

PDP type in GPRS

PDP type is the type of the IP address assigned to the PDP. PDP type maybe one of the following,

PDP address in GPRS

As a result of the ‘PDP activation’ procedure, the GGSN assigns the ‘PDP context’ an IP address. The ‘PDP address’

GTP tunnel and TEID

TEID refers to ‘Tunnel End Point Identifier’. After creating a PDP context between the MS and the GGSN, the data

Direct Tunneling in 3G

In order to reduce the load of passing the user plan data by the SGSN, the SGSN may decide to