Cisco ASR 5000 Series User Manual

Serving GPRS Support Node (SGSN) Overview
▀ Features and Functionality - Basic
▄ Cisco ASR 5000 Series Product Overview
OL-22938-02
Figure 166. Logic Diagram for Policy Selection
IMSI in range of
Operator Policy?
Policy PLMN ID
matches selected or
service PLMN ID?
Apply configuration from
Operator Policy
Policy PLMN ID
is null?
Default Operator
Policy Configured?
Apply configuration from
SGSN service
Apply configuration from
default Operator Policy
Check IMSI
Yes
Yes
No
Yes
No
No
Yes
Unique, non-overlapping, IMSI + PLMN-ID ranges create call filters that are used to distinguish between the configured
operator-policies. These filtering ranges are defined using the command documented in the ―SGSN Operator
Policy Configuration Mode‖ chapter of the Command Line Interface Reference
The system supports up to 1000 operator policies, including the operator policy named default. All operator policies
must be configured by the user to define limitations to be applied but for the default policy there is no -command
defined IMSI range filter to determine implementation - the default policy applies to any IMSIs that are not covered by
any other defined operator policy.
Some Configurable Features for Operator Policies
The following is a list of some of the features and functions that can be controlled via configuration of SGSN Operator
Policies:
Operator Determined Barring (ODB) - similar in function to roaming restrictions, but applied on a per service
basis, such as SMS.

Cisco ASR 5000 Series Specifications

General

Brand	Cisco
Model	ASR 5000 Series
Category	Network Router
Language	English