Cisco Cisco Packet Data Gateway (PDG) Documentation Roadmaps
PDG/TTG Overview
▀ Product Description
▄ Cisco ASR 5000 Series Product Overview
OL-22938-01
Product Description
The Cisco® ASR 5000 Chassis provides 3GPP wireless carriers with a flexible solution that functions as a PDG/TTG
(Packet Data Gateway/Tunnel Termination Gateway) in 3GPP UMTS wireless voice and data networks. The PDG/TTG
consists of new software for the ASR 5000.
(Packet Data Gateway/Tunnel Termination Gateway) in 3GPP UMTS wireless voice and data networks. The PDG/TTG
consists of new software for the ASR 5000.
The PDG/TTG enables mobile operators to provide Fixed Mobile Convergence (FMC) services to subscribers with
dual-mode handsets and dual-mode access cards via WiFi access points. The PDG/TTG makes it possible for operators
to provide secure access to the operator‘s 3GPP network from a non-secure network, reduce the load on the macro
wireless network, enhance in-building wireless coverage, and make use of existing backhaul infrastructure to reduce the
cost of carrying wireless calls.
dual-mode handsets and dual-mode access cards via WiFi access points. The PDG/TTG makes it possible for operators
to provide secure access to the operator‘s 3GPP network from a non-secure network, reduce the load on the macro
wireless network, enhance in-building wireless coverage, and make use of existing backhaul infrastructure to reduce the
cost of carrying wireless calls.
This PDG/TTG software release provides TTG functionality. The TTG is a network element that enables 3GPP PDG
functionality for existing GGSN deployments. The TTG and the subset of existing GGSN functions work together to
provide PDG functionality to the subscriber UEs in the WLAN.
functionality for existing GGSN deployments. The TTG and the subset of existing GGSN functions work together to
provide PDG functionality to the subscriber UEs in the WLAN.
Important:
This PDG/TTG software release provides TTG functionality only. PDG functionality is not supported
in this release.
Summary of TTG Features and Functions
The TTG features and functions include:
PDG service
TTG mode
IKEv2 and IP Security (IPSec) encryption
Multiple digital certificate selection based on APN
Subscriber traffic policing for IPSec access
DSCP marking for IPSec access
WLAN access control
RADIUS and Diameter support
EAP fast re-authentication
Pseudonym NAI support
Multiple APN support for IPSec access
Lawful intercept
IMS emergency call handling
IPSec Session recovery support