Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
Serving GPRS Support Node (SGSN) Overview
How the SGSN Works ▀
Cisco ASR 5000 Series Product Overview ▄
OL-22938-01
Figure 168. imple First-Time GPRS Attach
MS/UE
SGSN
HLR
2
3a
3b
3c
3d
2
4
1
This simple attach procedure can connect an MS via a BSS through the Gb interface (2.5G setup) or it can connect a UE
via a UTRAN through the Iu interface in a 3G network with the following process:
via a UTRAN through the Iu interface in a 3G network with the following process:
Table 87.
First-Time GPRS Attach Procedure
Step
Description
1
The MS/UE sends an Attach Request message to the SGSN. Included in the message is information, such as:
Routing area and location area information
Mobile network identity
Attach type