ETSI TS 102 232-5 V3.18.1 (2023-03)
Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 5: Service-specific details for IP Multimedia services
Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 5: Service-specific details for IP Multimedia services
RTS/LI-00236-5
Zakonito prestrezanje (LI) - Izročilni vmesnik in storitveno specifične podrobnosti (SSD) za IP-dostavo vsebin - 5. del: Storitveno specifične podrobnosti za večpredstavnostne storitve IP
Ta dokument določa prestrezanje večpredstavnostnih (MM) storitev internetnega protokola (IP) na podlagi protokola za vzpostavitev seje (SIP), protokola za prenos v realnem času (RTP) in protokola MSRP ter večpredstavnostnih storitev internetnega protokola, kot je opisano v priporočilih ITU-T H.323 [6] in H.248-1 [i.3].
Ta dokument je skladen z opredelitvijo izročilnega vmesnika v dokumentu ETSI TS 102 232-1 [2].
Ta dokument ne razveljavlja ali nadomešča nobene specifikacije ali zahteve v dokumentih 3GPP TS 33.108 [9] in ETSI TS 101 671 [1].
General Information
Buy Standard
Standards Content (Sample)
ETSI TS 102 232-5 V3.18.1 (2023-03)
TECHNICAL SPECIFICATION
Lawful Interception (LI);
Handover Interface and
Service-Specific Details (SSD) for IP delivery;
Part 5: Service-specific details for IP Multimedia services
---------------------- Page: 1 ----------------------
2 ETSI TS 102 232-5 V3.18.1 (2023-03)
Reference
RTS/LI-00236-5
Keywords
IMS, IP, lawful interception, security
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
https://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure Program:
https://www.etsi.org/standards/coordinated-vulnerability-disclosure
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
No representation or warranty is made that this deliverable is technically accurate or sufficient or conforms to any law
anty is made of merchantability or fitness
and/or governmental rule and/or regulation and further, no representation or warr
for any particular purpose or against infringement of intellectual property rights.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.
Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2023.
All rights reserved.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI TS 102 232-5 V3.18.1 (2023-03)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 General . 9
4.1 Reference Model for Lawful Interception . 9
4.2 Reference system model . 11
4.2.0 Overview . 11
4.2.1 Network layer Interception . 11
4.2.2 Service layer Interception . 12
4.3 General Requirements . 12
5 Interception of IP Multimedia services . 13
5.1 Identification of target of interception . 13
5.1.1 SIP Target Identification . 13
5.1.2 H.323 Target Identification . 13
5.1.3 Other Target Identifiers . 13
5.2 Interception of signalling . 13
5.2.1 Provisioning of the SIP IRI IIF . 13
5.2.2 Provisioning of the H.323 IRI IIF . 14
5.2.3 Location information . 14
5.2.4 Supplementary Services . 14
5.2.5 Additional signalling information . 14
5.2.6 SIP Messages in IRI-only intercept . 14
5.2.6.1 General . 14
5.2.6.2 SMS Messages . 15
5.2.7 Signalling IP address information . 15
5.3 Assigning a value to the Communication Identity Number . 15
5.3.0 Introduction. 15
5.3.1 Assigning a CIN value to SIP related IRI . 15
5.3.2 Assigning a CIN value to H.323 related IRI . 15
5.4 Events and IRI record types . 15
5.5 Interception of Content of Communication . 16
5.6 Direction for IMS IRI for Signalling Messages . 17
5.7 Direction for IMS sessions . 17
5.7.1 Direction for SIP sessions . 17
5.7.2 Direction for H.323 sessions . 17
5.8 Correlation of signalling and media . 18
6 Handover Interface . 18
6.1 Intercept Related Information . 18
6.2 Correlation of IRI and CC . 18
7 ASN.1 specification for IRI and CC. 18
Annex A (informative): Interception using H.248 . 19
ETSI
---------------------- Page: 3 ----------------------
4 ETSI TS 102 232-5 V3.18.1 (2023-03)
A.1 Purpose of this annex . 19
A.2 Notes on interception using H.248 . 19
A.2.1 Target identification (see also clause 5.1) . 19
A.2.2 Provisioning of the H.248 IRI IIF (see also clause 5.2) . 20
A.3 Problems in H.248 interception . 20
A.3.1 Missing information in H.248 signalling . 20
A.3.2 Missing call content. 21
Annex B (normative): Minimum set of functional attributes to be provided . 22
B.0 Overview . 22
B.1 General requirements . 22
B.2 Result of interception . 23
B.3 Location information . 23
B.4 Time constraints . 23
B.5 Technical handover interfaces and format requirements . 24
Annex C (informative): Change request history . 25
History . 28
ETSI
---------------------- Page: 4 ----------------------
5 ETSI TS 102 232-5 V3.18.1 (2023-03)
Intellectual Property Rights
Essential patents
IPRs essential or potentially essential to normative deliverables may have been declared to ETSI. The declarations
pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not
referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
The present document may include trademarks and/or tradenames which are asserted and/or registered by their owners.
ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
right to use or reproduce any trademark and/or tradename. Mention of those trademarks in the present document does
not constitute an endorsement by ETSI of products, services or organizations associated with those trademarks.
DECT™, PLUGTESTS™, UMTS™ and the ETSI logo are trademarks of ETSI registered for the benefit of its
Members. 3GPP™ and LTE™ are trademarks of ETSI registered for the benefit of its Members and of the 3GPP
Organizational Partners. oneM2M™ logo is a trademark of ETSI registered for the benefit of its Members and of the
®
oneM2M Partners. GSM and the GSM logo are trademarks registered and owned by the GSM Association.
Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Lawful Interception (LI).
The present document is part 5 of a multi-part deliverable. Full details of the entire series can be found in part 1 [2].
The ASN.1 module is available as an electronic attachment to the present document (see clause 7 for details).
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document focuses on Lawful Interception of IP Multimedia Services. It is to be used in conjunction with
ETSI TS 102 232-1 [2], in which the handling of the intercepted information is described.
ETSI
---------------------- Page: 5 ----------------------
6 ETSI TS 102 232-5 V3.18.1 (2023-03)
1 Scope
The present document specifies interception of Internet Protocol (IP) Multimedia (MM) Services based on the Session
Initiation Protocol (SIP) and Realtime Transport Protocol (RTP) and Message Session Relay Protocol (MSRP) and IP
MM services as described by the Recommendations ITU-T H.323 [6] and H.248-1 [i.3].
The present document is consistent with the definition of the Handover Interface, as described in ETSI
TS 102 232-1 [2].
The present document does not override or supersede any specifications or requirements in 3GPP TS 33.108 [9] and
ETSI TS 101 671 [1].
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 101 671: "Lawful Interception (LI); Handover interface for the lawful interception of
telecommunications traffic".
NOTE: ETSI TS 101 671 is in status "historical" and is not maintained.
[2] ETSI TS 102 232-1: "Lawful Interception (LI); Handover Interface and Service-Specific Details
(SSD) for IP delivery; Part 1: Handover specification for IP delivery".
[3] Recommendation ITU-T X.680: "Information technology - Abstract Syntax Notation One
(ASN.1): Specification of basic notation".
[4] IETF RFC 3261: "SIP: Session Initiation Protocol".
[5] IETF RFC 3550: "RTP: A Transport Protocol for Real-Time Applications".
[6] Recommendation ITU-T H.323: "Packet-based multimedia communications systems".
[7] Void.
[8] Void.
[9] ETSI TS 133 108: "Universal Mobile Telecommunications System (UMTS); LTE; Digital cellular
telecommunications system (Phase 2+) (GSM); 3G security; Handover interface for Lawful
Interception (LI) (3GPP TS 33.108)".
[10] ETSI TS 101 331: "Lawful Interception (LI); Requirements of Law Enforcement Agencies".
[11] ATIS-1000678.v4.2020: "Lawfully Authorized Electronic Surveillance (LAES) for Voice over
Internet Protocol and Rich Communications Services Messaging in Wireline and Broadband
Telecommunications Networks, Version 4".
[12] Recommendation ITU-T H.225.0: "Call signalling protocols and media stream packetization for
packet-based multimedia communication systems".
ETSI
---------------------- Page: 6 ----------------------
7 ETSI TS 102 232-5 V3.18.1 (2023-03)
[13] Recommendation ITU-T H.245: "Control protocol for multimedia communication".
[14] Void.
[15] IETF RFC 4975: "The Message Session Relay Protocol (MSRP)".
[16] Recommendation ITU-T T.38: "Procedures for real-time Group 3 facsimile communication over
IP networks".
[17] IETF RFC 4825: "The Extensible Markup Language (XML) Configuration Access Protocol
(XCAP)".
[18] ETSI TS 124 623: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; 5G; Extensible Markup Language (XML)
Configuration Access Protocol (XCAP) over the Ut interface for Manipulating Supplementary
Services (3GPP TS 24.623)".
[19] IETF RFC 5322: "Internet Message Format".
[20] ISO 3166-1: "Codes for the representation of names of countries and their subdivisions -- Part 1:
Country codes".
[21] ETSI TS 123 038: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; Alphabets and language-specific information
(3GPP TS 23.038)".
[22] ETSI TS 123 040: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; 5G; Technical realization of the Short
Message Service (SMS) (3GPP TS 23.040)".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TR 102 528: "Lawful Interception (LI); Interception domain Architecture for IP networks".
[i.2] ETSI TR 102 503: "Lawful Interception (LI); ASN.1 Object Identifiers in Lawful Interception and
Retained data handling Specifications".
[i.3] Recommendation ITU-T H.248-1: "Gateway control protocol: Version 3".
NOTE: H.248 was renumbered when revised on 2002-03-29. H.248 main body, Annexes A to E and Appendix I
were included in H.248.1. Subsequent annexes were sequentially numbered in the series, e.g. H.248
Annex F became H.248.2.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI TS 101 671 [1], ETSI TS 102 232-1 [2] and the
following apply:
context: logical collection of H.248 terminations
ETSI
---------------------- Page: 7 ----------------------
8 ETSI TS 102 232-5 V3.18.1 (2023-03)
IP MultiMedia service: multimedia service that utilizes the Internet Protocol (IP) for the transport of data
MultiMedia (MM): use of computers to present text, graphics, video, animation and sound in an integrated way
MultiMedia service: communication service that offers Multimedia communication to end-users
termination: entity in H.248 that acts as a source or sink of media
NOTE: Terminations may be physical, such as a given channel on a TDM line, or ephemeral, such as an IP
endpoint.
TSAP identifier: piece of information used to multiplex several transport connections of the same type on a single
H.323 entity with all transport connections sharing the same Network Address (e.g. the port number in a TCP/UDP/IP
environment)
NOTE: Transport layer Service Access Point (TSAP) identifiers may be (pre)assigned statically by some
international authority or may be allocated dynamically during the setup of a call. Dynamically assigned
TSAP identifiers are of transient nature, i.e. their values are only valid for the duration of a single call.
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AF Administration Function
ASN.1 Abstract Syntax Notation One
CC Content of Communication
CCCI Content of Communication Control Interface
CC IIF CC Internal Interception Function
CCTF Content of Communication Trigger Function
CCTI Content of Communication Trigger Interface
CID Communication IDentifier
CIN Communication Identity Number
CLI Calling Line Identity
CSP Communications Service Provider
NOTE: Covers all AP/NWO/SvP.
DTMF Dual Tone Multi Frequency
FFS For Further Study
GSM Global System for Mobile
GW GateWay
HI1 Handover Interface 1 (for Administrative Information)
HI2 Handover Interface 2 (for Intercept Related Information)
HI3 Handover Interface 3 (for Content of Communication)
HTTP Hyper Text Transfer Protocol
ID IDentity
IF Interception Function
IIF Internal Interception Function
IMEI International Mobile Equipment Identity
IMPI IMS Private Identity
IMPU IMS PUblic identity
IMS IP Multimedia Subsystem
IMSI International Mobile Station Identity
INI Internal Network Interface
IP Internet Protocol
IRI Intercept Related Information
IRI IIF IRI Internal Interception Function
LEA Law Enforcement Agency
ETSI
---------------------- Page: 8 ----------------------
9 ETSI TS 102 232-5 V3.18.1 (2023-03)
LEMF Law Enforcement Monitoring Facility
LI Lawful Interception
LIAF Lawful Interception Administration Function
LIID Lawful Interception IDentifier
MF Mediation Function
MG Media Gateway
MGC Media Gateway Controller
MM MultiMedia
MSRP Message Session Relay Protocol
NNI Network-to-Network Interface
OID Object IDentifier
PDU Protocol Data Unit
RAS Registration, Administration and Status
RP Relay Protocol
RTCP RTP Control Protocol
RTP Realtime Transport Protocol
SDP Session Description Protocol
SIP Session Initiation Protocol
SMS Short Message Service
SSD Service-Specific Details
SvP Service Provider
TCP Transmission Control Protocol
TDM Time Division Multiplex
TP Transfer Protocol
TPDU Transaction Protocol Data Unit
TSAP Transport layer Service Access Point
UDP User Datagram Protocol
UDPTL Facsimile UDP Transport Layer (protocol)
UE User Equipment
UNI User-Network Interface
URI Uniform Resource Identifier
URL Uniform Resource Locator
VoIP Voice over IP
XCAP eXtensible Markup Language (XML) Configuration Access Protocol
4 General
4.1 Reference Model for Lawful Interception
The present document adopts the generic reference model for the interception domain from ETSI TR 102 528 [i.1], its
internal intercept functions, Intercept Related Information Internal Interception Function (IRI IIF), Content of
Communication Trigger Function (CCTF), and Content of Communication Internal Interception Function (CC IIF), and
the Internal Network Interfaces INI1, INI2, INI3, Content of Communication Trigger Interface (CCTI) and Content of
Communication Control Interface (CCCI) as shown in figure 1.
ETSI
---------------------- Page: 9 ----------------------
10 ETSI TS 102 232-5 V3.18.1 (2023-03)
NWO/AP/SP DOMAIN LEA DOMAIN
HI
LEA
HI1
Administration Function (AF)
Administration
Function
INI1b INI1a
INI1c
IRI Internal Intercept
Function
INI2
(IRI IIF)
HI2
Law
Mediation
Enforcement
CCTI Function
Monitoring
CC Trigger
(MF)
Facility
Function
(LEMF)
(CCTF)
CCCI
CC Internal Intercept
Function
HI3
INI3
(CC IIF)
Figure 1: Reference Model for Lawful Interception
The reference model depicts the following functions and interfaces:
• INI1a provisions Intercept Related Information Internal Interception Function (IRI IIF).
• INI1b may (statically) provision Content of Communications Trigger Function (CCTF).
• INI1c provisions the Mediation Function (MF).
• Intercept Related Information Internal Intercept Function (IRI IIF) generates IRI.
• Content of Communication Internal Interception Function (CC IIF) generates CC.
• Content of Communication Trigger Function (CCTF) controls CC IIF.
• Content of Communication Control Interface (CCCI) provisions CC IIF.
• Content of Communication Trigger Interface (CCTI) may trigger CCTF for provisioning of the CC IIF.
• Content of Communication Control Interface (CCCI) may dynamically provision the CC IIF.
• Internal interface INI1 carries provisioning information from LIAF to the Internal Intercept Functions (IIF).
• Internal interface INI2 carries Intercept Related Information (IRI) from IRI IIF to the MF.
• Internal interface INI3 carries Content of Communication (CC) information from CC IIF to the MF.
For an in-depth explanation of the functions and interface, refer to clause 4 of ETSI TR 102 528 [i.1].
ETSI
---------------------- Page: 10 ----------------------
11 ETSI TS 102 232-5 V3.18.1 (2023-03)
4.2 Reference system model
4.2.0 Overview
The reference system model applied in the present document, as depicted in figure 2, provides a simplified model of a
technology independent, IP MultiMedia (MM) service platform, accessed by multiple different access networks. The
access networks may provide different forms of network access, using different technologies; they all have in common
that they provide IP connectivity among end-users and between end-users and the IP MM services provided by the IP
MM service platform.
Communication Signalling server
services
SvP IP Core network
GW GW GW
IP MM SvP
IAP / NWO
Access Access Access
network network network
Figure 2: Reference System Model
Access from the access networks into the IP Core network of the IP MM service provider is assumed to be protected by
some gateway device (e.g. a session border controller, border gateway controller or a firewall/router combination).
The IP MM Service platform contains a signalling server that provides session initiation functionality (e.g. a SIP call
manager or an H.323 gatekeeper) among end-users and between end-users and communication services (e.g.
...
SLOVENSKI STANDARD
SIST-TS ETSI/TS 102 232-5 V3.18.1:2023
01-julij-2023
Zakonito prestrezanje (LI) - Izročilni vmesnik in storitveno specifične podrobnosti
(SSD) za IP-dostavo vsebin - 5. del: Storitveno specifične podrobnosti za
večpredstavnostne storitve IP
Lawful Interception (LI) - Handover Interface and Service-Specific Details (SSD) for IP
delivery - Part 5: Service-specific details for IP Multimedia services
Ta slovenski standard je istoveten z: ETSI TS 102 232-5 V3.18.1 (2023-03)
ICS:
35.240.95 Spletne uporabniške rešitve Internet applications
SIST-TS ETSI/TS 102 232-5 V3.18.1:2023 en
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
---------------------- Page: 1 ----------------------
SIST-TS ETSI/TS 102 232-5 V3.18.1:2023
---------------------- Page: 2 ----------------------
SIST-TS ETSI/TS 102 232-5 V3.18.1:2023
ETSI TS 102 232-5 V3.18.1 (2023-03)
TECHNICAL SPECIFICATION
Lawful Interception (LI);
Handover Interface and
Service-Specific Details (SSD) for IP delivery;
Part 5: Service-specific details for IP Multimedia services
---------------------- Page: 3 ----------------------
SIST-TS ETSI/TS 102 232-5 V3.18.1:2023
2 ETSI TS 102 232-5 V3.18.1 (2023-03)
Reference
RTS/LI-00236-5
Keywords
IMS, IP, lawful interception, security
ETSI
650 Route des Lucioles
F-06921 Sophia Antipolis Cedex - FRANCE
Tel.: +33 4 92 94 42 00 Fax: +33 4 93 65 47 16
Siret N° 348 623 562 00017 - APE 7112B
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° w061004871
Important notice
The present document can be downloaded from:
https://www.etsi.org/standards-search
The present document may be made available in electronic versions and/or in print. The content of any electronic and/or
print versions of the present document shall not be modified without the prior written authorization of ETSI. In case of any
existing or perceived difference in contents between such versions and/or in print, the prevailing version of an ETSI
deliverable is the one made publicly available in PDF format at www.etsi.org/deliver.
Users of the present document should be aware that the document may be subject to revision or change of status.
Information on the current status of this and other ETSI documents is available at
https://portal.etsi.org/TB/ETSIDeliverableStatus.aspx
If you find errors in the present document, please send your comment to one of the following services:
https://portal.etsi.org/People/CommiteeSupportStaff.aspx
If you find a security vulnerability in the present document, please report it through our
Coordinated Vulnerability Disclosure Program:
https://www.etsi.org/standards/coordinated-vulnerability-disclosure
Notice of disclaimer & limitation of liability
The information provided in the present deliverable is directed solely to professionals who have the appropriate degree of
experience to understand and interpret its content in accordance with generally accepted engineering or
other professional standard and applicable regulations.
No recommendation as to products and services or vendors is made or should be implied.
No representation or warranty is made that this deliverable is technically accurate or sufficient or conforms to any law
anty is made of merchantability or fitness
and/or governmental rule and/or regulation and further, no representation or warr
for any particular purpose or against infringement of intellectual property rights.
In no event shall ETSI be held liable for loss of profits or any other incidental or consequential damages.
Any software contained in this deliverable is provided "AS IS" with no warranties, express or implied, including but not
limited to, the warranties of merchantability, fitness for a particular purpose and non-infringement of intellectual property
rights and ETSI shall not be held liable in any event for any damages whatsoever (including, without limitation, damages
for loss of profits, business interruption, loss of information, or any other pecuniary loss) arising out of or related to the use
of or inability to use the software.
Copyright Notification
No part may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and
microfilm except as authorized by written permission of ETSI.
The content of the PDF version shall not be modified without the written authorization of ETSI.
The copyright and the foregoing restriction extend to reproduction in all media.
© ETSI 2023.
All rights reserved.
ETSI
---------------------- Page: 4 ----------------------
SIST-TS ETSI/TS 102 232-5 V3.18.1:2023
3 ETSI TS 102 232-5 V3.18.1 (2023-03)
Contents
Intellectual Property Rights . 5
Foreword . 5
Modal verbs terminology . 5
Introduction . 5
1 Scope . 6
2 References . 6
2.1 Normative references . 6
2.2 Informative references . 7
3 Definition of terms, symbols and abbreviations . 7
3.1 Terms . 7
3.2 Symbols . 8
3.3 Abbreviations . 8
4 General . 9
4.1 Reference Model for Lawful Interception . 9
4.2 Reference system model . 11
4.2.0 Overview . 11
4.2.1 Network layer Interception . 11
4.2.2 Service layer Interception . 12
4.3 General Requirements . 12
5 Interception of IP Multimedia services . 13
5.1 Identification of target of interception . 13
5.1.1 SIP Target Identification . 13
5.1.2 H.323 Target Identification . 13
5.1.3 Other Target Identifiers . 13
5.2 Interception of signalling . 13
5.2.1 Provisioning of the SIP IRI IIF . 13
5.2.2 Provisioning of the H.323 IRI IIF . 14
5.2.3 Location information . 14
5.2.4 Supplementary Services . 14
5.2.5 Additional signalling information . 14
5.2.6 SIP Messages in IRI-only intercept . 14
5.2.6.1 General . 14
5.2.6.2 SMS Messages . 15
5.2.7 Signalling IP address information . 15
5.3 Assigning a value to the Communication Identity Number . 15
5.3.0 Introduction. 15
5.3.1 Assigning a CIN value to SIP related IRI . 15
5.3.2 Assigning a CIN value to H.323 related IRI . 15
5.4 Events and IRI record types . 15
5.5 Interception of Content of Communication . 16
5.6 Direction for IMS IRI for Signalling Messages . 17
5.7 Direction for IMS sessions . 17
5.7.1 Direction for SIP sessions . 17
5.7.2 Direction for H.323 sessions . 17
5.8 Correlation of signalling and media . 18
6 Handover Interface . 18
6.1 Intercept Related Information . 18
6.2 Correlation of IRI and CC . 18
7 ASN.1 specification for IRI and CC. 18
Annex A (informative): Interception using H.248 . 19
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A.1 Purpose of this annex . 19
A.2 Notes on interception using H.248 . 19
A.2.1 Target identification (see also clause 5.1) . 19
A.2.2 Provisioning of the H.248 IRI IIF (see also clause 5.2) . 20
A.3 Problems in H.248 interception . 20
A.3.1 Missing information in H.248 signalling . 20
A.3.2 Missing call content. 21
Annex B (normative): Minimum set of functional attributes to be provided . 22
B.0 Overview . 22
B.1 General requirements . 22
B.2 Result of interception . 23
B.3 Location information . 23
B.4 Time constraints . 23
B.5 Technical handover interfaces and format requirements . 24
Annex C (informative): Change request history . 25
History . 28
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Intellectual Property Rights
Essential patents
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pertaining to these essential IPRs, if any, are publicly available for ETSI members and non-members, and can be
found in ETSI SR 000 314: "Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to
ETSI in respect of ETSI standards", which is available from the ETSI Secretariat. Latest updates are available on the
ETSI Web server (https://ipr.etsi.org/).
Pursuant to the ETSI Directives including the ETSI IPR Policy, no investigation regarding the essentiality of IPRs,
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referenced in ETSI SR 000 314 (or the updates on the ETSI Web server) which are, or may be, or may become,
essential to the present document.
Trademarks
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ETSI claims no ownership of these except for any which are indicated as being the property of ETSI, and conveys no
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Foreword
This Technical Specification (TS) has been produced by ETSI Technical Committee Lawful Interception (LI).
The present document is part 5 of a multi-part deliverable. Full details of the entire series can be found in part 1 [2].
The ASN.1 module is available as an electronic attachment to the present document (see clause 7 for details).
Modal verbs terminology
In the present document "shall", "shall not", "should", "should not", "may", "need not", "will", "will not", "can" and
"cannot" are to be interpreted as described in clause 3.2 of the ETSI Drafting Rules (Verbal forms for the expression of
provisions).
"must" and "must not" are NOT allowed in ETSI deliverables except when used in direct citation.
Introduction
The present document focuses on Lawful Interception of IP Multimedia Services. It is to be used in conjunction with
ETSI TS 102 232-1 [2], in which the handling of the intercepted information is described.
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1 Scope
The present document specifies interception of Internet Protocol (IP) Multimedia (MM) Services based on the Session
Initiation Protocol (SIP) and Realtime Transport Protocol (RTP) and Message Session Relay Protocol (MSRP) and IP
MM services as described by the Recommendations ITU-T H.323 [6] and H.248-1 [i.3].
The present document is consistent with the definition of the Handover Interface, as described in ETSI
TS 102 232-1 [2].
The present document does not override or supersede any specifications or requirements in 3GPP TS 33.108 [9] and
ETSI TS 101 671 [1].
2 References
2.1 Normative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
Referenced documents which are not found to be publicly available in the expected location might be found at
https://docbox.etsi.org/Reference.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are necessary for the application of the present document.
[1] ETSI TS 101 671: "Lawful Interception (LI); Handover interface for the lawful interception of
telecommunications traffic".
NOTE: ETSI TS 101 671 is in status "historical" and is not maintained.
[2] ETSI TS 102 232-1: "Lawful Interception (LI); Handover Interface and Service-Specific Details
(SSD) for IP delivery; Part 1: Handover specification for IP delivery".
[3] Recommendation ITU-T X.680: "Information technology - Abstract Syntax Notation One
(ASN.1): Specification of basic notation".
[4] IETF RFC 3261: "SIP: Session Initiation Protocol".
[5] IETF RFC 3550: "RTP: A Transport Protocol for Real-Time Applications".
[6] Recommendation ITU-T H.323: "Packet-based multimedia communications systems".
[7] Void.
[8] Void.
[9] ETSI TS 133 108: "Universal Mobile Telecommunications System (UMTS); LTE; Digital cellular
telecommunications system (Phase 2+) (GSM); 3G security; Handover interface for Lawful
Interception (LI) (3GPP TS 33.108)".
[10] ETSI TS 101 331: "Lawful Interception (LI); Requirements of Law Enforcement Agencies".
[11] ATIS-1000678.v4.2020: "Lawfully Authorized Electronic Surveillance (LAES) for Voice over
Internet Protocol and Rich Communications Services Messaging in Wireline and Broadband
Telecommunications Networks, Version 4".
[12] Recommendation ITU-T H.225.0: "Call signalling protocols and media stream packetization for
packet-based multimedia communication systems".
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[13] Recommendation ITU-T H.245: "Control protocol for multimedia communication".
[14] Void.
[15] IETF RFC 4975: "The Message Session Relay Protocol (MSRP)".
[16] Recommendation ITU-T T.38: "Procedures for real-time Group 3 facsimile communication over
IP networks".
[17] IETF RFC 4825: "The Extensible Markup Language (XML) Configuration Access Protocol
(XCAP)".
[18] ETSI TS 124 623: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; 5G; Extensible Markup Language (XML)
Configuration Access Protocol (XCAP) over the Ut interface for Manipulating Supplementary
Services (3GPP TS 24.623)".
[19] IETF RFC 5322: "Internet Message Format".
[20] ISO 3166-1: "Codes for the representation of names of countries and their subdivisions -- Part 1:
Country codes".
[21] ETSI TS 123 038: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; Alphabets and language-specific information
(3GPP TS 23.038)".
[22] ETSI TS 123 040: "Digital cellular telecommunications system (Phase 2+) (GSM); Universal
Mobile Telecommunications System (UMTS); LTE; 5G; Technical realization of the Short
Message Service (SMS) (3GPP TS 23.040)".
2.2 Informative references
References are either specific (identified by date of publication and/or edition number or version number) or
non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the
referenced document (including any amendments) applies.
NOTE: While any hyperlinks included in this clause were valid at the time of publication, ETSI cannot guarantee
their long term validity.
The following referenced documents are not necessary for the application of the present document but they assist the
user with regard to a particular subject area.
[i.1] ETSI TR 102 528: "Lawful Interception (LI); Interception domain Architecture for IP networks".
[i.2] ETSI TR 102 503: "Lawful Interception (LI); ASN.1 Object Identifiers in Lawful Interception and
Retained data handling Specifications".
[i.3] Recommendation ITU-T H.248-1: "Gateway control protocol: Version 3".
NOTE: H.248 was renumbered when revised on 2002-03-29. H.248 main body, Annexes A to E and Appendix I
were included in H.248.1. Subsequent annexes were sequentially numbered in the series, e.g. H.248
Annex F became H.248.2.
3 Definition of terms, symbols and abbreviations
3.1 Terms
For the purposes of the present document, the terms given in ETSI TS 101 671 [1], ETSI TS 102 232-1 [2] and the
following apply:
context: logical collection of H.248 terminations
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IP MultiMedia service: multimedia service that utilizes the Internet Protocol (IP) for the transport of data
MultiMedia (MM): use of computers to present text, graphics, video, animation and sound in an integrated way
MultiMedia service: communication service that offers Multimedia communication to end-users
termination: entity in H.248 that acts as a source or sink of media
NOTE: Terminations may be physical, such as a given channel on a TDM line, or ephemeral, such as an IP
endpoint.
TSAP identifier: piece of information used to multiplex several transport connections of the same type on a single
H.323 entity with all transport connections sharing the same Network Address (e.g. the port number in a TCP/UDP/IP
environment)
NOTE: Transport layer Service Access Point (TSAP) identifiers may be (pre)assigned statically by some
international authority or may be allocated dynamically during the setup of a call. Dynamically assigned
TSAP identifiers are of transient nature, i.e. their values are only valid for the duration of a single call.
3.2 Symbols
Void.
3.3 Abbreviations
For the purposes of the present document, the following abbreviations apply:
AF Administration Function
ASN.1 Abstract Syntax Notation One
CC Content of Communication
CCCI Content of Communication Control Interface
CC IIF CC Internal Interception Function
CCTF Content of Communication Trigger Function
CCTI Content of Communication Trigger Interface
CID Communication IDentifier
CIN Communication Identity Number
CLI Calling Line Identity
CSP Communications Service Provider
NOTE: Covers all AP/NWO/SvP.
DTMF Dual Tone Multi Frequency
FFS For Further Study
GSM Global System for Mobile
GW GateWay
HI1 Handover Interface 1 (for Administrative Information)
HI2 Handover Interface 2 (for Intercept Related Information)
HI3 Handover Interface 3 (for Content of Communication)
HTTP Hyper Text Transfer Protocol
ID IDentity
IF Interception Function
IIF Internal Interception Function
IMEI International Mobile Equipment Identity
IMPI IMS Private Identity
IMPU IMS PUblic identity
IMS IP Multimedia Subsystem
IMSI International Mobile Station Identity
INI Internal Network Interface
IP Internet Protocol
IRI Intercept Related Information
IRI IIF IRI Internal Interception Function
LEA Law Enforcement Agency
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LEMF Law Enforcement Monitoring Facility
LI Lawful Interception
LIAF Lawful Interception Administration Function
LIID Lawful Interception IDentifier
MF Mediation Function
MG Media Gateway
MGC Media Gateway Controller
MM MultiMedia
MSRP Message Session Relay Protocol
NNI Network-to-Network Interface
OID Object IDentifier
PDU Protocol Data Unit
RAS Registration, Administration and Status
RP Relay Protocol
RTCP RTP Control Protocol
RTP Realtime Transport Protocol
SDP Session Description Protocol
SIP Session Initiation Protocol
SMS Short Message Service
SSD Service-Specific Details
SvP Service Provider
TCP Transmission Control Protocol
TDM Time Division Multiplex
TP Transfer Protocol
TPDU Transaction Protocol Data Unit
TSAP Transport layer Service Access Point
UDP User Datagram Protocol
UDPTL Facsimile UDP Transport Layer (protocol)
UE User Equipment
UNI User-Network Interface
URI Uniform Resource Identifier
URL Uniform Resource Locator
VoIP Voice over IP
XCAP eXtensible Markup Language (XML) Configuration Access Protocol
4 General
4.1 Reference Model for Lawful Interception
The present document adopts the generic reference model for the interception domain from ETSI TR 102 528 [i.1], its
internal intercept functions, Intercept Related Information Internal Interception Function (IRI IIF), Content of
Communication Trigger Function (CCTF), and Content of Communication Internal Interception Function (CC IIF), and
the Internal Network Interfaces INI1, INI2, INI3, Content of Communication Trigger Interface (CCTI) and Content of
Communication Control Interface (CCCI) as shown in figure 1.
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NWO/AP/SP DOMAIN LEA DOMAIN
HI
LEA
HI1
Administration Function (AF)
Administration
Function
INI1b INI1a
INI1c
IRI Internal Intercept
Function
INI2
(IRI IIF)
HI2
Law
Mediation
Enforcement
CCTI Function
Monitoring
CC Trigger
(MF)
Facility
Function
(LEMF)
(CCTF)
CCCI
CC Internal Intercept
Function
HI3
INI3
(CC IIF)
Figure 1: Reference Model for Lawful Interception
The reference model depicts the following functions and interfaces:
• INI1a provisions Intercept Related Information Internal Interception Function (IRI IIF).
• INI1b may (statically) provision Content of Communications Trigger Function (CCTF).
• INI1c provisions the Mediation Function (MF).
• Intercept Related Information Internal Intercept Function (IRI IIF) generates IRI.
• Content of Communication Internal Interception Function (CC IIF) generates CC.
• Content of Communication Trigger Function (CCTF) controls CC IIF.
• Content of Communication Control Interface (CCCI) provisions CC IIF.
• Content of Communication Trigger Interface (CCTI) may trigger CCTF for provisioning of the CC IIF.
• Content of Communication Control Interface (CCCI) may dynamically provision the CC IIF.
• Internal interface INI1 carries provisioning information from LIAF to the Internal Intercept Functions (IIF).
• Internal interface INI2 carries Intercept Related Information (IRI) from IRI IIF to the MF.
• Internal interface INI3 carries Content of Communication (CC) information from CC IIF to the MF.
For an in-depth explanation of the functions and interface, refer to clause 4 of ETSI TR 102 528 [i.1].
E
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