1、 ETSI SR 003 292 V1.1.1 (2017-11) Lawful Interception (LI); IMS and LTE FAQ and Guidance SPECIAL REPORT ETSI ETSI SR 003 292 V1.1.1 (2017-11) 2 Reference DSR/LI-00122 Keywords IMS, Lawful Interception, LTE, RCS, VoLTE ETSI 650 Route des Lucioles F-06921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92
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7、n in all media. ETSI 2017. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are trademarks of ETSI registered for the benefit of its Members. 3GPPTM and LTE are trademarks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. oneM2M logo is prote
8、cted for the benefit of its Members. GSM and the GSM logo are trademarks registered and owned by the GSM Association. ETSI ETSI SR 003 292 V1.1.1 (2017-11) 3 Contents Intellectual Property Rights 5g3Foreword. 5g3Modal verbs terminology 5g3Introduction 5g31 Scope 6g32 References 6g32.1 Normative refe
9、rences . 6g32.2 Informative references 6g33 Abbreviations . 8g34 Questions and guidance statements 10g34.0 Introduction 10g34.1 General solution architecture 10g34.1.1 Introduction. 10g34.1.2 Question: What is the relationship between LTE and EPS? . 10g34.1.3 Question: What is new in the EPS/IMS arc
10、hitecture? 11g34.1.4 Question: What is the service definition of VoLTE? 11g34.1.5 Question: What other services are combined with VoLTE? . 11g34.1.6 Question: What types of IMS are there internationally? . 12g34.1.7 Question: What types of IMS service are of relevance to LEAs? . 12g34.2 Applicable i
11、nternational standards . 12g34.2.1 Introduction. 12g34.2.2 Question: What are the applicable international LI and DR standards? . 12g34.2.3 Question: What are the applicable VoLTE standards? . 13g34.2.4 Question: What are the pros and cons of the international LI and DR standards? 13g34.3 Nodes and
12、Intercept Access Points / Points of Intercept 13g34.3.1 Introduction. 13g34.3.2 Question: For VoLTE intercept, what are the options for the IAPs and their pros and cons? 13g34.3.3 Question: For IMS intercept, what are the options for the IAPs and their pros and cons? . 14g34.4 Identities used in IMS
13、 and how to target the right identity/identities . 14g34.4.1 Introduction. 14g34.4.2 Question: What are the available target identities? . 14g34.4.3 Question: Is IMSI and IMEI interception possible for IMS? 15g34.4.4 Question: Is it always possible to determine who initiated an IMS session (or an IM
14、S dialog), and flagging which was targeted? 16g34.4.5 Question: How do you define the start, end and duration of a session? 16g34.4.6 Question: How do you define the direction and context of a session? 16g34.4.7 Question: Are device identifiers or P-GRUUs seen or both? Also, is the PANI header avail
15、able/useful? . 16g34.4.8 Question: Can location information be obtained from IMS? 16g34.4.9 Question: How do we get hold of location information? 17g34.4.10 Question: How do we present location information? 17g34.4.11 Question: How do we correlate location information (e.g. from access to service or
16、 vice versa)?. 17g34.4.12 Question: Are login and presence events seen? 17g34.4.13 Question: Is it possible to determine the IP addresses of the participants (e.g. target and non-target)? . 17g34.5 Detailed call/sessions flows and guidance with regard to multi-location or multi-country sessions 17g3
17、4.5.1 Question: Is it possible to enforce the use of clear media and clear signalling in the visiting network possible? . 17g34.5.2 Question: Where is it decided what roaming scenarios are allowed or supported? 17g34.5.3 Question: Do roamers always go back to their home network for their services? 1
18、8g34.6 Supplementary Services . 18g34.6.1 Introduction. 18g34.6.2 Question: Will the Supplementary Services change? . 18g34.7 Terminals, LEMF capabilities and E2E issues . 19g34.7.1 Introduction. 19g3ETSI ETSI SR 003 292 V1.1.1 (2017-11) 4 4.7.2 Question: Should we put all of the signalling interpre
19、tation responsibility on the LEMF? 19g34.7.3 Question: Can the responsibility for the interpretation of the signalling be placed on the LEMF? 19g34.8 Correlation 19g34.8.1 Question: How can different identities for a single party be performed? . 19g34.8.2 Question: How can HI2 and HI3 be correlated?
20、 . 19g34.8.3 Question: How can you correlate different sessions between different accesses (e.g. CS call and VoLTE call)? 20g34.9 Codecs, codec changes and other issues affecting voice quality 20g34.9.1 Introduction. 20g34.9.2 Question: What common codecs are seen? . 20g34.9.3 Question: Are there li
21、kely to be codecs beyond those specified in the core VoLTE specification which are being used or expected to be used in VoLTE? . 20g34.9.4 Question: If proprietary codecs are used then appropriate technical details and licenses need to be provided? 21g34.9.5 Question: Can the IMS operators limit the
22、 codecs which are used? . 21g34.10 Impacts and dependencies on existing CS solutions 21g34.10.1 Introduction. 21g34.10.2 Question: Is “double interception“ possible? 21g34.11 Related or complimentary technologies . 21g34.11.1 Introduction. 21g34.11.2 Question: What are the links or cross-overs with
23、the Internet of Things? 22g34.11.3 Question: What are the links to eCall? 22g3Annex A: Change Request history 23g3History 24g3ETSI ETSI SR 003 292 V1.1.1 (2017-11) 5 Intellectual Property Rights Essential patents IPRs essential or potentially essential to the present document may have been declared
24、to ETSI. The information pertaining to these essential IPRs, if any, is 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 a
25、vailable from the ETSI Secretariat. Latest updates are available on the ETSI Web server (https:/ipr.etsi.org/). Pursuant to the ETSI IPR Policy, no investigation, 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
26、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 w
27、hich 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. Foreword
28、This Special Report (SR) has been produced by ETSI Technical Committee Lawful Interception (LI). Modal verbs terminology In the present document “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 Rul
29、es (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 provides a summary of some of the issues that members of ETSI TC LI believe to be important in relation to the Lawful
30、Interception of IMS (IP Multimedia Subsystem) and LTE (Long Term Evolution). ETSI ETSI SR 003 292 V1.1.1 (2017-11) 6 1 Scope The present document provides guidance to interested parties regarding implementation of Lawful Interception (LI) for LTE, IMS and related services. It covers what is availabl
31、e and how it may be interpreted. The present document is in the format of a set of Frequently Asked Questions and their accompanying answers, contained within the present document. An Explanatory Note is produced to accompany the present document which contains some observations based on the questio
32、ns and answers. The present document covers both Lawful Interception and Data Retention. 2 References 2.1 Normative references Normative references are not applicable in the present document. 2.2 Informative references References are either specific (identified by date of publication and/or edition
33、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,
34、 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 GSMA IR.92 v7.0: “IMS Profile for Voice and SMS“. i.2 GSMA RCC.61: “RCS Common Core
35、 1.1 Service Description Document, Version 2.0“. i.3 GSMA IR.64: “IMS Service Centralization and Continuity Guidelines“. i.4 ETSI TS 133 107: “Universal Mobile Telecommunications System (UMTS); LTE; 3G security; Lawful interception architecture and functions (3GPP TS 33.107)“. i.5 ETSI TS 133 108: “
36、Universal Mobile Telecommunications System (UMTS); LTE; 3G security; Handover interface for Lawful Interception (LI) (3GPP TS 33.108)“. i.6 ETSI TS 102 232-1: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 1: Handover specification for IP deliv
37、ery“. i.7 ETSI TS 102 232-5: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP delivery; Part 5: Service-specific details for IP Multimedia Services“. i.8 ETSI TS 102 232-7: “Lawful Interception (LI); Handover Interface and Service-Specific Details (SSD) for IP
38、delivery; Part 7: Service-specific details for Mobile Services“. i.9 ETSI TS 102 657: “Lawful Interception (LI); Retained data handling; Handover interface for the request and delivery of retained data“. i.10 Recommendation ITU-T E.164: “The International Public Telecommunication Numbering Plan“. i.
39、11 IETF RFC 7977: “The Message Session Relay Protocol (MSRP)“. i.12 IETF RFC 4825: “The Extensible Markup Language (XML) Configuration Access Protocol (XCAP)“. ETSI ETSI SR 003 292 V1.1.1 (2017-11) 7 i.13 ATIS-1000678.v3.2015: “Lawfully Authorized Electronic Surveillance (LAES) for Voice over Intern
40、et Protocol in Wireline Telecommunications Networks“. i.14 ATIS-0700005.v002.2017: “Lawfully Authorized Electronic Surveillance (LAES) for 3GPP IMS-based VoIP and other Multimedia Services“. i.15 PKT-SP-ES-INF-I04-080425: “PacketCable 2.0 Electronic Surveillance Intra-Network Specification“. i.16 ET
41、SI TS 123 228: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IP Multimedia Subsystem (IMS); Stage 2 (3GPP TS 23.228)“. i.17 ETSI TS 129 228: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecomm
42、unications System (UMTS); LTE; IP Multimedia (IM) Subsystem Cx and Dx Interfaces; Signalling flows and message contents (3GPP TS 29.228)“. i.18 ETSI TS 129 229: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Cx and Dx interfaces
43、based on the Diameter protocol; Protocol details (3GPP TS 29.229)“. i.19 ETSI TS 129 230: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Diameter applications; 3GPP specific codes and identifiers (3GPP TS 29.230)“. i.20 ETSI TS 1
44、24 229: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; IP multimedia call control protocol based on Session Initiation Protocol (SIP) and Session Description Protocol (SDP); Stage 3 (3GPP TS 24.229)“. i.21 ETSI TS 123 003: “Digit
45、al cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); Numbering, addressing and identification (3GPP TS 23.003)“. i.22 IETF RFC 7254: “A Uniform Resource Name Namespace for the Global System for Mobile Communications Association (GSMA) and the Int
46、ernational Mobile Station Equipment Identity (IMEI)“. i.23 IETF RFC 7255: “A Uniform Resource Name Namespace for the Global System for Mobile Communications Association (GSMA) and the International Mobile Station Equipment Identity (IMEI)“. i.24 3GPP TR 33.827: “Study on Providing for LI in the S8 H
47、ome Routing Architecture for VoLTE (Release 14)“. i.25 ETSI TS 124 607: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Originating Identification Presentation (OIP) and Originating Identification Restriction (OIR) using IP Multim
48、edia (IM) Core Network (CN) subsystem; Protocol specification (3GPP TS 24.607)“. i.26 ETSI TS 124 608: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Terminating Identification Presentation (TIP) and Terminating Identification Re
49、striction (TIR) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification (3GPP TS 24.608)“. i.27 ETSI TS 124 610: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Communication HOLD (HOLD) using IP Multimedia (IM) Core Network (CN) subsystem; Protocol specification (3GPP TS 24.610)“. i.28 ETSI TS 124 605: “Digital cellular telecommunications system (Phase 2+) (GSM); Universal Mobile Telecommunications System (UMTS); LTE; Conference (
