Cisco ASR 5000 Series, Обзор продукта

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PDG/TTG Overview
▀ Product Description
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
Product Description
The Cisco® ASR 5000 Chassis provides 3GPP mobile operators with a flexible solution that functions as a Packet Data
Gateway/Tunnel Termination Gateway (PDG/TTG) in 3G UMTS wireless 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 3G 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.
The TTG is a network element that enables PDG functionality for existing GGSN deployments. The TTG and a subset
of existing GGSN functions work together to provide PDG functionality to the subscriber UEs in the WLAN.
Summary of PDG/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
Congestion control
Bulk statistics
Threshold crossing alerts (TCAs)