This TS specifies the discovery and network selection procedures for access to 3GPP Evolved Packet
Core (EPC) via non-3GPP access networks and includes Authentication and Access Authorization using
Authentication, Authorization and Accounting (AAA) procedures used for the interworking of the 3GPP EPC and the
non-3GPP access networks.
This TS also specifies the Tunnel management procedures used for establishing an end-to-end tunnel
from the UE to the ePDG to the point of obtaining IP connectivity and includes the selection of the IP mobility mode.