C.2 Observed IMEI tickets

32.0053G call and event data for the Circuit Switched (CS) domain3GPPCharging managementRelease 1999Telecommunications managementTS

An observed IMEI ticket is generated whenever greylisted, blacklisted or non-whitelisted mobile equipment is detected during an IMEI check. The purpose of the ticket is to link the mobile equipment under observation with its current user (IMSI). The ticket also includes information describing when and where the equipment was used to enable the tracking of such equipment. Finally, if the ticket was triggered by a call attempt, a call reference is provided in order to locate the corresponding call record.

The IMEI tickets are generated by the NEF of the MSC performing the IMEI check.

Table C.1: IMEI ticket

Field

Description

Served IMEI

M

IMEI of the observed mobile equipment

IMEI Status

M

The result of the IMEI check e.g. blacklisted, greylisted, unknown.

Served IMSI

M

The IMSI of the subscriber currently using the mobile equipment.

Served MSISDN

C

The MSISDN of the subscriber currently using the observed mobile equipment, only available if the event that triggered the IMEI check was an MOC, MTC, SMS-MO or SMS-MT

Recording Entity

M

The E.164 number of the recording MSC.

Event Time Stamp

M

The time at which the IMEI check was performed.

Location

M

The location area code and cell identity of the cell from which the mobile equipment was used.

IMEI Check Event

O

The event that caused IMEI checking to take place

Call Reference

O

Only available if the IMEI check was related to an MOC or MTC

Record extensions

O

A set of network/ manufacturer specific extensions to the record.