N.1 Introduction

33.1083G Security3GPPHandover interface for Lawful Interception (LI)Release 17TS

It is commonly understood that all IRI messages delivered over the HI2 and, when applicable, the associated CC delivered over the HI3 shall be correlated. To accomplish this, ASN.1 modules defined in TS 33.108 define the parameters under different names. In all cases, except the case of VoIP, it is straight forward. The ASN.1 module for HI2 defines the parameter which is imported and used in the ASN.1 module of HI3. In some cases, both HI2 and HI3 modules import the parameter from somewhere else.

This annex focuses on the correlation numbers used in IMS VoIP and IMS Conferencing.