B.2.3 Interrogation

3G security3GPP43.033Lawful InterceptionRelease 13Stage 2TS

The purpose of interrogation is consistency checking for the interception function. It can be use e.g. for audit functionality, but this is beyond the scope of the present document.

Interrogation of all activations for a given LEA is an ADMF filter function.

B.2.3.1 Interrogation of the SGSN and GGSN

The following picture shows the information flow for the interrogation of the Lawful interception. It must be possible to interrogate

– a specific activation at this GSN for a given target identity;

– all activations at this GSN.

As result of the interrogation the activation status and data are returned.

Figure B.9: Interrogation of the Lawful Interception (GSN)

B.2.3.2 Interrogation of Delivery Functions

The following picture shows the information flow for the interrogation of the Lawful interception. It must be possible to interrogate:

– a specific activation at a Delivery Function for a given activation id;

– all activations at a Delivery Function for a given target identity;

– all activations at a Delivery Function.

As result of the interrogation the activation status and data are returned.

Figure B.10: Interrogation of the Lawful Interception (Delivery Functions)