PDN Gateway Overview
Features and Functionality - Base Software ▀
Cisco ASR 5x00 Packet Data Network Gateway Administration Guide ▄
51
CSS uses Access Control Lists (ACLs) to redirect selective subscriber traffic flows. ACLs control the flow of packets
into and out of the system. ACLs consist of “rules” (ACL rules) or filters that control the action taken on packets
matching the filter criteria.
ACLs are configurable on a per-context basis and applies to a subscriber through either a subscriber profile or an APN
profile in the destination context.
Important:
For more information on CSS, refer to the
Content Service Steering
chapter of the
System
Administration Guide
.
Important:
For more information on ACLs, refer to the
IP Access Control Lists
chapter of the
System
Administration Guide
.
Support for Multiple Detail Record Types
To meet the requirements of standard solutions and at the same time, provide flexible and detailed information on
service usage, the Enhanced Charging Service (ECS) provides the following type of usage records:
Event Detail Records (EDRs)
Usage Detail Records (UDRs)
ECS provides for the generation of charging data files, which can be periodically retrieved from the system and used as
input to a billing mediation system for post-processing. These files are provided in a standard format, so that the impact
on the existing billing/mediation system is minimal and at the same time, these records contain all the information
required for billing based on the content.
GTPP accounting in ECS allows the collection of counters for different types of data traffic into detail records. The
following types of detail records are supported:
Event Detail Records (EDRs)
: An alternative to standard G-CDRs when the information provided by the G-
CDRs is not sufficient to do the content billing. EDRs are generated according to explicit action statements in
rule commands that are user-configurable. The EDRs are generated in comma separated values (CSV) format,
generated as defined in traffic analysis rules.
User Detail Records (UDRs)
: Contain accounting information related to a specific mobile subscriber. The fields
to be reported in them are user-configurable and are generated on any trigger of time threshold, volume
threshold, handoffs, and call termination. The UDRs are generated in comma separated values (CSV) format,
generated as defined in traffic analysis rules.
Important:
This functionality is available for use with the Enhanced Charging Service which requires a session-
use license. For more information on ECS, refer to the
Enhanced Charging Service Administration Guide
.
Diameter Credit Control Application
Provides a pre-paid billing mechanism for real-time cost and credit control based on the following
standards
:
RFC 3588, Diameter Base Protocol, September 2003
RFC 4006, Diameter Credit-Control Application, August 2005
The Diameter Credit Control Application (DCCA) is used to implement real-time credit-control for a variety of end user
services such as network access, Session Initiation Protocol (SIP) services, messaging services, download services etc.
