1-in-N IMEI Check per SGSN Subscriber

Feature Summary and Revision History

Summary Data

Applicable Product(s) or Functional Area

SGSN

Applicable Platform(s)

  • ASR 5500

  • VPC-DI

  • VPC-SI

Feature Default

Disabled - Configuration Required

Related Changes in This Release

Not Applicable

Related Documentation

  • Command Line Interface Reference

  • SGSN Administration Guide

Revision History

Revision Details

Release

First introduced.

21.10

Feature Description

The SGSN supports IMEI check for a configurable number of subscriber events ranging from 1 to 15 events. With this release, the SGSN skips sending IMEI check to EIR for the first “N-1” events where IMEI/IMEISV is received. The number of IMEI Check for each subscriber towards EIR is drastically reduced thereby reducing the EIR load. This also ensures that each subscriber is IMEI/IMEISV checked periodically.


Important

Fresh IMEI check happens for requests with foreign PTMSI landed to different session managers other than the session manager where the subscriber was housed previously.

Configuring IMEI Check to EIR for the First 1-N Events

This section describes how to configure IMEI check to EIR for the first 1-N events.

Configuring IMEI Check Every N Events in MAP Service

Use the following configuration to perform IMEI check every N events for each subscriber. 

configure  
   context context_name  
      map-service map_service_name  
          equipment-identity-register { isdn E.164_num | point code point_code } check-imei-sub-every-n-events times 
          no equipment-identity-register { isdn E.164_num | point code point_code } [ include-imsi | map-include-imsi ] 
          end

Notes:

  • check-imei-sub-every-n-events times : Performs IMEI check every N events for each subscriber. times must be an integer ranging from 1 to 15.

  • no : Disables the configuration to perform IMEI check every N events for each subscriber.

Configuring IMEI Check Every N Events in EIR-Profile

Use the following configuration to Perform IMEI check every N events for each subscriber. 

configure  
   sgsn-global   
      eir-profile profile_name  
          check-imei-sub-every-n-events check_frequency 
          no check-imei-sub-every-n-events   
          end

Notes:

  • eir-profile profile_name : Configures EIR profile. Pointcode/ISDN should be configured for EIR Profile to be valid. profile_name Specifies the EIR profile name, must be a string of 1 to 64 characters.

  • check-imei-sub-every-n-events check_frequency : Performs IMEI check every N events for each subscriber . check_frequency must be an integer from 1 to 15.

  • no : Disables the configuration to Perform IMEI check every N events for each subscriber.