Understanding The Service Operation - Cisco ASR 5000 Series Administration Manual

Chapter 2

Understanding the Service Operation

The system provides wireless carriers with a flexible solution for providing Security Gateway (SeGW) and Home-
NodeB Gateway (HNB-GW) functionality for 3G UMTS networks.
The system functioning as an HNB-GW is capable of supporting the following types of subscriber sessions:
CS Session over Iu-CS: The subscriber is provided voice, video, and CS data service on circuit switch session
through MSC in CS network.
PS Session over Iu-PS: The subscriber is provided packet switch connection with different traffic class on PS
session with GSN in PS.
Network-initiated Session: A paging procedure initiated by MSC/SGSN/GGSN for a specific subscriber is send
to HNB-GW and in turn HNB-GW initiates a paging procedure with HNBs to page the UE and establish a
bearer context.
Prior to connecting to the command line interface (CLI) and beginning the system's configuration, there are important
things to understand about how the system supports these applications. This chapter provides terminology and
background information that must be considered before attempting to configure the system.
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Cisco ASR 5000 Series 3G Home NodeB Gateway Administration Guide ▄