Lawful Interception (LI) - Handover interface for the lawful interception of telecommunications traffic

The present document is step 3 of a three-step approach to describe a generic Handover Interface (HI) for the provision
of lawful interception from a Network Operator, an Access Provider or a Service Provider (NWO/AP/SvP) to the
Law Enforcement Agencies (LEAs). The provision of lawful interception is a requirement of national law, which is
usually mandatory for the operation of any telecommunication service.
Step 1 contains the requirements for lawful interception from a users (LEAs) point of view and is published in ETSI
TS 101 331 [1].
Step 2 describes the derived network functions and the general architecture (or functional model) and is published in
ETSI ES 201 158 [2].
The present document specifies:
• the generic flow of information as well as the procedures and information elements, which are applicable to
any future telecommunication network or service;
• the network/service specific protocols relating to the provision of lawful interception at the Handover Interface
(HI), for the following networks/services:
- switched circuit; and
- packet data.
The technologies covered in the present document are: GSM, TETRA, GPRS, ISDN, PSTN, fixed NGN (including
PSTN/ISDN emulation) and fixed IMS PSTN simulation.
NOTE: As new networks and/or services are developed, the present document will be expanded as the relevant
standards become available.

Zakonito prestrezanje (LI) - Izročilni vmesnik za zakonito prestrezanje telekomunikacijskega prometa

Ta dokument je 3. korak pristopa v treh korakih, ki opisuje splošni izročilni vmesnik (HI) za zakonito prestrezanje organov pregona (LEA) pri omrežnem operaterju, ponudniku dostopa ali ponudniku storitev (NWO/AP/SvP). Zakonito prestrezanje je zahteva nacionalne zakonodaje, ki je običajno obvezujoča za delovanje vseh telekomunikacijskih storitev.
1. korak vsebuje zahteve za zakonito prestrezanje z vidika uporabnikov (organov pregona) in je objavljen v standardu ETSI TS 101 331 [1].
2. korak opisuje izpeljane omrežne funkcije in splošno arhitekturo (ali funkcionalni model) ter je objavljen v standardu ETSI ES 201 158 [2].
Ta dokument določa:
• splošni pretok informacij ter postopke in informacije, ki se uporabljajo za vsa prihodnja telekomunikacijska omrežja in storitve;
• posebne protokole za omrežje/storitve, ki se nanašajo na zakonito prestrezanje v izročilnem vmesniku (HI) za naslednja omrežja/storitve:
– vodovno komutirana; in
– paketni podatki.
V tem dokumentu so zajete naslednje tehnologije: GSM, TETRA, GPRS, ISDN, PSTN, fiksni NGN (vključno z emulacijo PSTN/ISDN) in fiksna simulacija IMS PSTN.
OPOMBA: Ker se razvijajo nova omrežja in/ali storitve, bo ta dokument razširjen, ko bodo na voljo ustrezni standardi.

General Information

Status
Published
Publication Date
03-Dec-2018
Current Stage
6060 - National Implementation/Publication (Adopted Project)
Start Date
28-Nov-2018
Due Date
02-Feb-2019
Completion Date
04-Dec-2018

Buy Standard

Standard
ETSI ES 201 671 V3.2.1 (2018-05) - Lawful Interception (LI); Handover interface for the lawful interception of telecommunications traffic
English language
128 pages
sale 15% off
Preview
sale 15% off
Preview
Standard
ETSI ES 201 671 V3.2.1 (2018-03) - Lawful Interception (LI); Handover interface for the lawful interception of telecommunications traffic
English language
128 pages
sale 15% off
Preview
sale 15% off
Preview
Standardization document
SIST ES 201 671 V3.2.1:2019
English language
128 pages
sale 10% off
Preview
sale 10% off
Preview

e-Library read for
1 day

Standards Content (sample)

ETSI ES 201 671 V3.2.1 (2018-05)
ETSI STANDARD
Lawful Interception (LI);
Handover interface for the lawful interception of
telecommunications traffic
---------------------- Page: 1 ----------------------
2 ETSI ES 201 671 V3.2.1 (2018-05)
Reference
RES/LI-00154
Keywords
data, handover, interface, Lawful Interception,
security, speech
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 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://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 only prevailing document is the

print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.

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
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 2018.
All rights reserved.
TM TM TM

DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

TM TM

3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.
oneM2M logo is protected for the benefit of its Members.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 ETSI ES 201 671 V3.2.1 (2018-05)
Contents

Intellectual Property Rights ................................................................................................................................ 9

Foreword ............................................................................................................................................................. 9

Modal verbs terminology .................................................................................................................................... 9

Introduction ........................................................................................................................................................ 9

1 Scope ...................................................................................................................................................... 10

2 References .............................................................................................................................................. 10

2.1 Normative references ....................................................................................................................................... 10

2.2 Informative references ...................................................................................................................................... 14

3 Definitions and abbreviations ................................................................................................................. 15

3.1 Definitions ........................................................................................................................................................ 15

3.2 Abbreviations ................................................................................................................................................... 18

4 General requirements ............................................................................................................................. 20

4.0 General ............................................................................................................................................................. 20

4.1 Basic principles for the Handover Interface ..................................................................................................... 20

4.2 Legal requirements ........................................................................................................................................... 20

4.3 Functional requirements ................................................................................................................................... 20

5 Overview of Handover Interface ............................................................................................................ 21

5.0 General ............................................................................................................................................................. 21

5.1 Handover Interface port 1 (HI1) ....................................................................................................................... 22

5.1.0 General ........................................................................................................................................................ 22

5.1.1 Manual interface ......................................................................................................................................... 23

5.1.2 Electronic interface ..................................................................................................................................... 23

5.2 Handover Interface port 2 (HI2) ....................................................................................................................... 23

5.3 Handover Interface port 3 (HI3) ....................................................................................................................... 23

6 Specific identifiers for LI ....................................................................................................................... 23

6.0 General ............................................................................................................................................................. 23

6.1 Lawful Interception IDentifier (LIID) .............................................................................................................. 24

6.2 Communication IDentifier (CID) ..................................................................................................................... 24

6.2.0 General ........................................................................................................................................................ 24

6.2.1 Network IDentifier (NID) ........................................................................................................................... 24

6.2.2 Communication Identity Number (CIN) - optional .................................................................................... 25

7 HI1: Interface port for administrative information ................................................................................. 25

7.0 General ............................................................................................................................................................. 25

7.1 Information for the activation of lawful interception ....................................................................................... 25

7.2 LI notifications towards the LEMF .................................................................................................................. 26

8 HI2: Interface port for Intercept Related Information ............................................................................ 26

8.0 General ............................................................................................................................................................. 26

8.1 Data transmission protocols ............................................................................................................................. 26

8.1.0 Introduction................................................................................................................................................. 26

8.1.1 Application for IRI (HI2 information) ........................................................................................................ 27

8.2 Types of IRI records ......................................................................................................................................... 27

9 HI3: Interface port for Content of Communication ................................................................................ 27

10 Performance and quality ......................................................................................................................... 28

10.1 Timing .............................................................................................................................................................. 28

10.2 Quality .............................................................................................................................................................. 28

11 Security aspects ...................................................................................................................................... 28

11.0 General ............................................................................................................................................................. 28

11.1 Security properties ............................................................................................................................................ 28

11.2 Security mechanisms ........................................................................................................................................ 29

ETSI
---------------------- Page: 3 ----------------------
4 ETSI ES 201 671 V3.2.1 (2018-05)

12 Quantitative aspects ................................................................................................................................ 29

Annex A (normative): Circuit switched network handover ............................................................. 30

A.0 General ................................................................................................................................................... 30

A.1 Specific identifiers for LI ....................................................................................................................... 30

A.1.0 General ............................................................................................................................................................. 30

A.1.1 CC Link IDentifier (CCLID) ............................................................................................................................ 30

A.1.2 Circuit switched LI correlation between CC and IRI ....................................................................................... 30

A.1.3 Usage of Identifiers .......................................................................................................................................... 30

A.2 HI1: interface port for administrative state ............................................................................................ 31

A.3 HI2: interface port for IRI ...................................................................................................................... 31

A.3.1 Definition of Intercept Related Information (IRI) ............................................................................................ 31

A.3.2 Structure of IRI records .................................................................................................................................... 32

A.3.2.0 General ........................................................................................................................................................ 32

A.3.2.1 Control information for HI2........................................................................................................................ 32

A.3.2.2 Basic call information ................................................................................................................................. 32

A.3.2.3 Information on Supplementary Services, related to a call in progress ........................................................ 33

A.3.2.4 Information on non-call related Supplementary Services ........................................................................... 33

A.3.3 Selection of parameters for IRI records ............................................................................................................ 34

A.3.4 Coding of parameters in IRI records ................................................................................................................ 36

A.3.5 Information content of the IRI record types ..................................................................................................... 37

A.4 HI3: interface port for Content of Communication ................................................................................ 37

A.4.0 General ............................................................................................................................................................. 37

A.4.1 Delivery of Content of Communication (CC) .................................................................................................. 37

A.4.1.0 General ........................................................................................................................................................ 37

A.4.1.1 Delivery of TETRA CC over circuit switched handover networks ............................................................ 38

A.4.2 Delivery of packetized Content of Communication (CC) (general) ................................................................. 38

A.4.2.0 General ........................................................................................................................................................ 38

A.4.2.1 Delivery of TETRA CC over packet switched handover networks ............................................................ 39

A.4.3 Control information for circuit switched Content of Communication (CC) ..................................................... 39

A.4.4 Exception handling ........................................................................................................................................... 40

A.4.4.1 Failure of CC links ...................................................................................................................................... 40

A.4.4.2 Fault reporting ............................................................................................................................................ 40

A.4.5 Security requirements at the interface port HI3 ................................................................................................ 41

A.4.5.0 General ........................................................................................................................................................ 41

A.4.5.1 LI access verification .................................................................................................................................. 41

A.4.5.2 Access protection ........................................................................................................................................ 41

A.4.5.3 Authentication ............................................................................................................................................. 41

A.5 LI procedures for circuit switched supplementary services ................................................................... 42

A.5.1 General ............................................................................................................................................................. 42

A.5.2 CC link Impact ................................................................................................................................................. 44

A.5.3 IRI impact, general principle for sending IRI records ...................................................................................... 44

A.5.4 Multi party calls - general principles, options A, B .......................................................................................... 45

A.5.4.0 General ........................................................................................................................................................ 45

A.5.4.1 CC links for active and non-active calls (option A) .................................................................................... 45

A.5.4.2 Reuse of CC links for active calls (option B) ............................................................................................. 45

A.5.5 Subscriber Controlled Input (SCI): Activation/Deactivation/Interrogation of services ................................... 46

A.6 Detailed procedures for circuit switched supplementary services .......................................................... 46

A.6.1 Advice of Charge services (AOC) .................................................................................................................... 46

A.6.2 Call Waiting (CW) ........................................................................................................................................... 46

A.6.2.1 Call Waiting (CW) at target: CC links ........................................................................................................ 46

A.6.2.2 Call Waiting: IRI records ............................................................................................................................ 47

A.6.2.2.1 Target is served user.............................................................................................................................. 47

A.6.2.2.2 Other party is served user ...................................................................................................................... 47

A.6.3 Call Hold/Retrie ve ............................................................................................................................................ 47

A.6.3.1 CC links for active and non-active calls (option A) .................................................................................... 47

A.6.3.2 Reuse of CC links for active calls (option B) ............................................................................................. 47

ETSI
---------------------- Page: 4 ----------------------
5 ETSI ES 201 671 V3.2.1 (2018-05)

A.6.3.3 IRI records .................................................................................................................................................. 47

A.6.3.3.1 Invocation of Call Hold or Retrieve by target ....................................................................................... 47

A.6.3.3.2 Invocation of Hold or Retrieve by other parties .................................................................................... 47

A.6.4 Explicit Call Transfer (ECT) ............................................................................................................................ 47

A.6.4.1 Explicit Call Transfer (ECT), CC link ........................................................................................................ 47

A.6.4.2 Explicit Call Transfer (ECT), IRI records .................................................................................................. 48

A.6.5 Calling Line Identification Presentation (CLIP) (IRI Records) ........................................................................ 48

A.6.5.1 Call originated by target (other party is served user) .................................................................................. 48

A.6.5.2 Call terminated at target (target is served user) .......................................................................................... 48

A.6.6 Calling Line Identification Restriction (CLIR) ................................................................................................ 48

A.6.7 COnnected Line identification Presentation (COLP) ....................................................................................... 48

A.6.7.1 Call terminated at target (other party is served user) .................................................................................. 48

A.6.7.2 Call originated by target (target is served user) .......................................................................................... 48

A.6.8 COnnected Line identification Restriction (COLR) ......................................................................................... 48

A.6.9 Closed User Group (CUG) ............................................................................................................................... 49

A.6.10 Completion of Call to Busy Subscriber (CCBS) .............................................................................................. 49

A.6.11 CONFerence call, add-on (CONF) ................................................................................................................... 49

A.6.11.1 CONFerence calls, add on: CC links .......................................................................................................... 49

A.6.11.2 Conference calls: IRI records...................................................................................................................... 49

A.6.12 Three Party Service (Conference) .................................................................................................................... 49

A.6.12.1 CC links ...................................................................................................................................................... 49

A.6.12.2 Three Party Service, IRI Records ............................................................................................................... 49

A.6.13 Meet-Me Conference (MMC) .......................................................................................................................... 49

A.6.14 Direct Dialling In (DDI) ................................................................................................................................... 50

A.6.15 Multiple Subscriber Number (MSN) ................................................................................................................ 50

A.6.16 DIVersion services (DIV) ................................................................................................................................ 50

A.6.16.0 General ........................................................................................................................................................ 50

A.6.16.1 Call Diversion by target .............................................................................................................................. 50

A.6.16.1.1 Call Diversion by target, CC links ........................................................................................................ 50

A.6.16.1.2 Call Diversion by target, IRI records .................................................................................................... 51

A.6.16.2 Forwarded call terminated at target ............................................................................................................ 51

A.6.16.3 Call from target forwarded ......................................................................................................................... 51

A.6.17 Variants of call diversion services .................................................................................................................... 51

A.6.18 Void .................................................................................................................................................................. 51

A.6.19 Malicious Call IDentification (MCID) ............................................................................................................. 51

A.6.20 SUBaddressing (SUB) ...................................................................................................................................... 51

A.6.21 Terminal Portability (TP) ................................................................................................................................. 51

A.6.21.1 CC links ...................................................................................................................................................... 51

A.6.21.2 IRI records .................................................................................................................................................. 51

A.6.21.2.1 Invocation of Terminal Portability by target ......................................................................................... 51

A.6.21.2.2 Invocation of Terminal Portability by other parties .............................................................................. 52

A.6.22 User-to-User Signalling (UUS) ........................................................................................................................ 52

A.6.23 Abbreviated Address (AA) ............................................................................................................................... 52

A.6.24 Fixed Destination Call (FDC) .......................................................................................................................... 52

A.6.25 Alarm Call (AC)/Wake-Up Service (WUS) ..................................................................................................... 52

A.6.26 Incoming Call Barring (ICB)............................................................................................................................ 52

A.6.27 Outgoing Call Barring (OCB) .......................................................................................................................... 52

A.6.28 Completion of Calls on No Reply (CCNR) ...................................................................................................... 52

A.6.29 Reverse charging .............................................................................................................................................. 52

A.6.30 Line hunting ..................................................................................................................................................... 53

A.6.31 Message Wait Indication (MWI) ...................................................................................................................... 53

A.6.32 Name display .................................................................................................................................................... 53

A.6.33 Tones, announcements ..................................................................................................................................... 53

A.7 Void ........................................................................................................................................................ 53

A.8 GSM circuit switched technology annex ................................................................................................ 53

A.8.1 Functional architecture ..................................................................................................................................... 53

A.8.2 Correlation of CC and IRI (see clause 6) ......................................................................................................... 54

A.8.3 HI3 (delivery of CC) ........................................................................................................................................ 54

A.8.4 HI2 (delivery of IRI) ........................................................................................................................................ 54

A.9 TETRA technology annex ...................................................................................................................... 56

ETSI
---------------------- Page: 5 ----------------------
6 ETSI ES 201 671 V3.2.1 (2018-05)

A.10 NGN PSTN/ISDN emulation and simulation services technology annex ............................................. 56

A.10.0 General ............................................................................................................................................................. 56

A.10.1 Functional architecture ..................................................................................................................................... 56

A.10.2 Correlation ........................................................................................................................................................ 56

A.10.3 HI2.................................................................................................................................................................... 57

A.10.4 HI3........................
...

Final draft ETSI ES 201 671 V3.2.1 (2018-03)
ETSI STANDARD
Lawful Interception (LI);
Handover interface for the lawful interception of
telecommunications traffic
---------------------- Page: 1 ----------------------
2 Final draft ETSI ES 201 671 V3.2.1 (2018-03)
Reference
RES/LI-00154
Keywords
data, handover, interface, Lawful Interception,
security, speech
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 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://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 only prevailing document is the

print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.

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
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 2018.
All rights reserved.
TM TM TM

DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

TM TM

3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.
oneM2M logo is protected for the benefit of its Members.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 2 ----------------------
3 Final draft ETSI ES 201 671 V3.2.1 (2018-03)
Contents

Intellectual Property Rights ................................................................................................................................ 9

Foreword ............................................................................................................................................................. 9

Modal verbs terminology .................................................................................................................................... 9

Introduction ........................................................................................................................................................ 9

1 Scope ...................................................................................................................................................... 10

2 References .............................................................................................................................................. 10

2.1 Normative references ....................................................................................................................................... 10

2.2 Informative references ...................................................................................................................................... 14

3 Definitions and abbreviations ................................................................................................................. 15

3.1 Definitions ........................................................................................................................................................ 15

3.2 Abbreviations ................................................................................................................................................... 18

4 General requirements ............................................................................................................................. 20

4.0 General ............................................................................................................................................................. 20

4.1 Basic principles for the Handover Interface ..................................................................................................... 20

4.2 Legal requirements ........................................................................................................................................... 20

4.3 Functional requirements ................................................................................................................................... 20

5 Overview of Handover Interface ............................................................................................................ 21

5.0 General ............................................................................................................................................................. 21

5.1 Handover Interface port 1 (HI1) ....................................................................................................................... 22

5.1.0 General ........................................................................................................................................................ 22

5.1.1 Manual interface ......................................................................................................................................... 23

5.1.2 Electronic interface ..................................................................................................................................... 23

5.2 Handover Interface port 2 (HI2) ....................................................................................................................... 23

5.3 Handover Interface port 3 (HI3) ....................................................................................................................... 23

6 Specific identifiers for LI ....................................................................................................................... 23

6.0 General ............................................................................................................................................................. 23

6.1 Lawful Interception IDentifier (LIID) .............................................................................................................. 24

6.2 Communication IDentifier (CID) ..................................................................................................................... 24

6.2.0 General ........................................................................................................................................................ 24

6.2.1 Network IDentifier (NID) ........................................................................................................................... 24

6.2.2 Communication Identity Number (CIN) - optional .................................................................................... 25

7 HI1: Interface port for administrative information ................................................................................. 25

7.0 General ............................................................................................................................................................. 25

7.1 Information for the activation of lawful interception ....................................................................................... 25

7.2 LI notifications towards the LEMF .................................................................................................................. 26

8 HI2: Interface port for Intercept Related Information ............................................................................ 26

8.0 General ............................................................................................................................................................. 26

8.1 Data transmission protocols ............................................................................................................................. 26

8.1.0 Introduction................................................................................................................................................. 26

8.1.1 Application for IRI (HI2 information) ........................................................................................................ 27

8.2 Types of IRI records ......................................................................................................................................... 27

9 HI3: Interface port for Content of Communication ................................................................................ 27

10 Performance and quality ......................................................................................................................... 28

10.1 Timing .............................................................................................................................................................. 28

10.2 Quality .............................................................................................................................................................. 28

11 Security aspects ...................................................................................................................................... 28

11.0 General ............................................................................................................................................................. 28

11.1 Security properties ............................................................................................................................................ 28

11.2 Security mechanisms ........................................................................................................................................ 29

ETSI
---------------------- Page: 3 ----------------------
4 Final draft ETSI ES 201 671 V3.2.1 (2018-03)

12 Quantitative aspects ................................................................................................................................ 29

Annex A (normative): Circuit switched network handover ............................................................. 30

A.0 General ................................................................................................................................................... 30

A.1 Specific identifiers for LI ....................................................................................................................... 30

A.1.0 General ............................................................................................................................................................. 30

A.1.1 CC Link IDentifier (CCLID) ............................................................................................................................ 30

A.1.2 Circuit switched LI correlation between CC and IRI ....................................................................................... 30

A.1.3 Usage of Identifiers .......................................................................................................................................... 30

A.2 HI1: interface port for administrative state ............................................................................................ 31

A.3 HI2: interface port for IRI ...................................................................................................................... 31

A.3.1 Definition of Intercept Related Information (IRI) ............................................................................................ 31

A.3.2 Structure of IRI records .................................................................................................................................... 32

A.3.2.0 General ........................................................................................................................................................ 32

A.3.2.1 Control information for HI2........................................................................................................................ 32

A.3.2.2 Basic call information ................................................................................................................................. 32

A.3.2.3 Information on Supplementary Services, related to a call in progress ........................................................ 33

A.3.2.4 Information on non-call related Supplementary Services ........................................................................... 33

A.3.3 Selection of parameters for IRI records ............................................................................................................ 34

A.3.4 Coding of parameters in IRI records ................................................................................................................ 36

A.3.5 Information content of the IRI record types ..................................................................................................... 37

A.4 HI3: interface port for Content of Communication ................................................................................ 37

A.4.0 General ............................................................................................................................................................. 37

A.4.1 Delivery of Content of Communication (CC) .................................................................................................. 37

A.4.1.0 General ........................................................................................................................................................ 37

A.4.1.1 Delivery of TETRA CC over circuit switched handover networks ............................................................ 38

A.4.2 Delivery of packetized Content of Communication (CC) (general) ................................................................. 38

A.4.2.0 General ........................................................................................................................................................ 38

A.4.2.1 Delivery of TETRA CC over packet switched handover networks ............................................................ 39

A.4.3 Control information for circuit switched Content of Communication (CC) ..................................................... 39

A.4.4 Exception handling ........................................................................................................................................... 40

A.4.4.1 Failure of CC links ...................................................................................................................................... 40

A.4.4.2 Fault reporting ............................................................................................................................................ 40

A.4.5 Security requirements at the interface port HI3 ................................................................................................ 41

A.4.5.0 General ........................................................................................................................................................ 41

A.4.5.1 LI access verification .................................................................................................................................. 41

A.4.5.2 Access protection ........................................................................................................................................ 41

A.4.5.3 Authentication ............................................................................................................................................. 41

A.5 LI procedures for circuit switched supplementary services ................................................................... 42

A.5.1 General ............................................................................................................................................................. 42

A.5.2 CC link Impact ................................................................................................................................................. 44

A.5.3 IRI impact, general principle for sending IRI records ...................................................................................... 44

A.5.4 Multi party calls - general principles, options A, B .......................................................................................... 45

A.5.4.0 General ........................................................................................................................................................ 45

A.5.4.1 CC links for active and non-active calls (option A) .................................................................................... 45

A.5.4.2 Reuse of CC links for active calls (option B) ............................................................................................. 45

A.5.5 Subscriber Controlled Input (SCI): Activation/Deactivation/Interrogation of services ................................... 46

A.6 Detailed procedures for circuit switched supplementary services .......................................................... 46

A.6.1 Advice of Charge services (AOC) .................................................................................................................... 46

A.6.2 Call Waiting (CW) ........................................................................................................................................... 46

A.6.2.1 Call Waiting (CW) at target: CC links ........................................................................................................ 46

A.6.2.2 Call Waiting: IRI records ............................................................................................................................ 47

A.6.2.2.1 Target is served user.............................................................................................................................. 47

A.6.2.2.2 Other party is served user ...................................................................................................................... 47

A.6.3 Call Hold/Retrie ve ............................................................................................................................................ 47

A.6.3.1 CC links for active and non-active calls (option A) .................................................................................... 47

A.6.3.2 Reuse of CC links for active calls (option B) ............................................................................................. 47

ETSI
---------------------- Page: 4 ----------------------
5 Final draft ETSI ES 201 671 V3.2.1 (2018-03)

A.6.3.3 IRI records .................................................................................................................................................. 47

A.6.3.3.1 Invocation of Call Hold or Retrieve by target ....................................................................................... 47

A.6.3.3.2 Invocation of Hold or Retrieve by other parties .................................................................................... 47

A.6.4 Explicit Call Transfer (ECT) ............................................................................................................................ 47

A.6.4.1 Explicit Call Transfer (ECT), CC link ........................................................................................................ 47

A.6.4.2 Explicit Call Transfer (ECT), IRI records .................................................................................................. 48

A.6.5 Calling Line Identification Presentation (CLIP) (IRI Records) ........................................................................ 48

A.6.5.1 Call originated by target (other party is served user) .................................................................................. 48

A.6.5.2 Call terminated at target (target is served user) .......................................................................................... 48

A.6.6 Calling Line Identification Restriction (CLIR) ................................................................................................ 48

A.6.7 COnnected Line identification Presentation (COLP) ....................................................................................... 48

A.6.7.1 Call terminated at target (other party is served user) .................................................................................. 48

A.6.7.2 Call originated by target (target is served user) .......................................................................................... 48

A.6.8 COnnected Line identification Restriction (COLR) ......................................................................................... 48

A.6.9 Closed User Group (CUG) ............................................................................................................................... 49

A.6.10 Completion of Call to Busy Subscriber (CCBS) .............................................................................................. 49

A.6.11 CONFerence call, add-on (CONF) ................................................................................................................... 49

A.6.11.1 CONFerence calls, add on: CC links .......................................................................................................... 49

A.6.11.2 Conference calls: IRI records...................................................................................................................... 49

A.6.12 Three Party Service (Conference) .................................................................................................................... 49

A.6.12.1 CC links ...................................................................................................................................................... 49

A.6.12.2 Three Party Service, IRI Records ............................................................................................................... 49

A.6.13 Meet-Me Conference (MMC) .......................................................................................................................... 49

A.6.14 Direct Dialling In (DDI) ................................................................................................................................... 50

A.6.15 Multiple Subscriber Number (MSN) ................................................................................................................ 50

A.6.16 DIVersion services (DIV) ................................................................................................................................ 50

A.6.16.0 General ........................................................................................................................................................ 50

A.6.16.1 Call Diversion by target .............................................................................................................................. 50

A.6.16.1.1 Call Diversion by target, CC links ........................................................................................................ 50

A.6.16.1.2 Call Diversion by target, IRI records .................................................................................................... 51

A.6.16.2 Forwarded call terminated at target ............................................................................................................ 51

A.6.16.3 Call from target forwarded ......................................................................................................................... 51

A.6.17 Variants of call diversion services .................................................................................................................... 51

A.6.18 Void .................................................................................................................................................................. 51

A.6.19 Malicious Call IDentification (MCID) ............................................................................................................. 51

A.6.20 SUBaddressing (SUB) ...................................................................................................................................... 51

A.6.21 Terminal Portability (TP) ................................................................................................................................. 51

A.6.21.1 CC links ...................................................................................................................................................... 51

A.6.21.2 IRI records .................................................................................................................................................. 51

A.6.21.2.1 Invocation of Terminal Portability by target ......................................................................................... 51

A.6.21.2.2 Invocation of Terminal Portability by other parties .............................................................................. 52

A.6.22 User-to-User Signalling (UUS) ........................................................................................................................ 52

A.6.23 Abbreviated Address (AA) ............................................................................................................................... 52

A.6.24 Fixed Destination Call (FDC) .......................................................................................................................... 52

A.6.25 Alarm Call (AC)/Wake-Up Service (WUS) ..................................................................................................... 52

A.6.26 Incoming Call Barring (ICB)............................................................................................................................ 52

A.6.27 Outgoing Call Barring (OCB) .......................................................................................................................... 52

A.6.28 Completion of Calls on No Reply (CCNR) ...................................................................................................... 52

A.6.29 Reverse charging .............................................................................................................................................. 52

A.6.30 Line hunting ..................................................................................................................................................... 53

A.6.31 Message Wait Indication (MWI) ...................................................................................................................... 53

A.6.32 Name display .................................................................................................................................................... 53

A.6.33 Tones, announcements ..................................................................................................................................... 53

A.7 Void ........................................................................................................................................................ 53

A.8 GSM circuit switched technology annex ................................................................................................ 53

A.8.1 Functional architecture ..................................................................................................................................... 53

A.8.2 Correlation of CC and IRI (see clause 6) ......................................................................................................... 54

A.8.3 HI3 (delivery of CC) ........................................................................................................................................ 54

A.8.4 HI2 (delivery of IRI) ........................................................................................................................................ 54

A.9 TETRA technology annex ...................................................................................................................... 56

ETSI
---------------------- Page: 5 ----------------------
6 Final draft ETSI ES 201 671 V3.2.1 (2018-03)

A.10 NGN PSTN/ISDN emulation and simulation services technology annex ............................................. 56

A.10.0 General ............................................................................................................................................................. 56

A.10.1 Functional architecture ..................................................................................................................................... 56

A.10.2 Correlation ........................................................................................................................................................ 56

A.10.3 HI2.........................................................................................................................................

...

SLOVENSKI STANDARD
SIST ES 201 671 V3.2.1:2019
01-januar-2019
=DNRQLWRSUHVWUH]DQMH /, ,]URþLOQLYPHVQLN]D]DNRQLWRSUHVWUH]DQMH
WHOHNRPXQLNDFLMVNHJDSURPHWD
Lawful Interception (LI) - Handover interface for the lawful interception of
telecommunications traffic
Ta slovenski standard je istoveten z: ETSI ES 201 671 V3.2.1 (2018-05)
ICS:
33.030 Telekomunikacijske Telecommunication services.
uporabniške rešitve Applications
SIST ES 201 671 V3.2.1:2019 en

2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.

---------------------- Page: 1 ----------------------
SIST ES 201 671 V3.2.1:2019
---------------------- Page: 2 ----------------------
SIST ES 201 671 V3.2.1:2019
ETSI ES 201 671 V3.2.1 (2018-05)
ETSI STANDARD
Lawful Interception (LI);
Handover interface for the lawful interception of
telecommunications traffic
---------------------- Page: 3 ----------------------
SIST ES 201 671 V3.2.1:2019
2 ETSI ES 201 671 V3.2.1 (2018-05)
Reference
RES/LI-00154
Keywords
data, handover, interface, Lawful Interception,
security, speech
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 - NAF 742 C
Association à but non lucratif enregistrée à la
Sous-Préfecture de Grasse (06) N° 7803/88
Important notice
The present document can be downloaded from:
http://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 only prevailing document is the

print of the Portable Document Format (PDF) version kept on a specific network drive within ETSI Secretariat.

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
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 2018.
All rights reserved.
TM TM TM

DECT , PLUGTESTS , UMTS and the ETSI logo are trademarks of ETSI registered for the benefit of its Members.

TM TM

3GPP and LTE are trademarks of ETSI registered for the benefit of its Members and

of the 3GPP Organizational Partners.
oneM2M logo is protected for the benefit of its Members.
GSM and the GSM logo are trademarks registered and owned by the GSM Association.
ETSI
---------------------- Page: 4 ----------------------
SIST ES 201 671 V3.2.1:2019
3 ETSI ES 201 671 V3.2.1 (2018-05)
Contents

Intellectual Property Rights ................................................................................................................................ 9

Foreword ............................................................................................................................................................. 9

Modal verbs terminology .................................................................................................................................... 9

Introduction ........................................................................................................................................................ 9

1 Scope ...................................................................................................................................................... 10

2 References .............................................................................................................................................. 10

2.1 Normative references ....................................................................................................................................... 10

2.2 Informative references ...................................................................................................................................... 14

3 Definitions and abbreviations ................................................................................................................. 15

3.1 Definitions ........................................................................................................................................................ 15

3.2 Abbreviations ................................................................................................................................................... 18

4 General requirements ............................................................................................................................. 20

4.0 General ............................................................................................................................................................. 20

4.1 Basic principles for the Handover Interface ..................................................................................................... 20

4.2 Legal requirements ........................................................................................................................................... 20

4.3 Functional requirements ................................................................................................................................... 20

5 Overview of Handover Interface ............................................................................................................ 21

5.0 General ............................................................................................................................................................. 21

5.1 Handover Interface port 1 (HI1) ....................................................................................................................... 22

5.1.0 General ........................................................................................................................................................ 22

5.1.1 Manual interface ......................................................................................................................................... 23

5.1.2 Electronic interface ..................................................................................................................................... 23

5.2 Handover Interface port 2 (HI2) ....................................................................................................................... 23

5.3 Handover Interface port 3 (HI3) ....................................................................................................................... 23

6 Specific identifiers for LI ....................................................................................................................... 23

6.0 General ............................................................................................................................................................. 23

6.1 Lawful Interception IDentifier (LIID) .............................................................................................................. 24

6.2 Communication IDentifier (CID) ..................................................................................................................... 24

6.2.0 General ........................................................................................................................................................ 24

6.2.1 Network IDentifier (NID) ........................................................................................................................... 24

6.2.2 Communication Identity Number (CIN) - optional .................................................................................... 25

7 HI1: Interface port for administrative information ................................................................................. 25

7.0 General ............................................................................................................................................................. 25

7.1 Information for the activation of lawful interception ....................................................................................... 25

7.2 LI notifications towards the LEMF .................................................................................................................. 26

8 HI2: Interface port for Intercept Related Information ............................................................................ 26

8.0 General ............................................................................................................................................................. 26

8.1 Data transmission protocols ............................................................................................................................. 26

8.1.0 Introduction................................................................................................................................................. 26

8.1.1 Application for IRI (HI2 information) ........................................................................................................ 27

8.2 Types of IRI records ......................................................................................................................................... 27

9 HI3: Interface port for Content of Communication ................................................................................ 27

10 Performance and quality ......................................................................................................................... 28

10.1 Timing .............................................................................................................................................................. 28

10.2 Quality .............................................................................................................................................................. 28

11 Security aspects ...................................................................................................................................... 28

11.0 General ............................................................................................................................................................. 28

11.1 Security properties ............................................................................................................................................ 28

11.2 Security mechanisms ........................................................................................................................................ 29

ETSI
---------------------- Page: 5 ----------------------
SIST ES 201 671 V3.2.1:2019
4 ETSI ES 201 671 V3.2.1 (2018-05)

12 Quantitative aspects ................................................................................................................................ 29

Annex A (normative): Circuit switched network handover ............................................................. 30

A.0 General ................................................................................................................................................... 30

A.1 Specific identifiers for LI ....................................................................................................................... 30

A.1.0 General ............................................................................................................................................................. 30

A.1.1 CC Link IDentifier (CCLID) ............................................................................................................................ 30

A.1.2 Circuit switched LI correlation between CC and IRI ....................................................................................... 30

A.1.3 Usage of Identifiers .......................................................................................................................................... 30

A.2 HI1: interface port for administrative state ............................................................................................ 31

A.3 HI2: interface port for IRI ...................................................................................................................... 31

A.3.1 Definition of Intercept Related Information (IRI) ............................................................................................ 31

A.3.2 Structure of IRI records .................................................................................................................................... 32

A.3.2.0 General ........................................................................................................................................................ 32

A.3.2.1 Control information for HI2........................................................................................................................ 32

A.3.2.2 Basic call information ................................................................................................................................. 32

A.3.2.3 Information on Supplementary Services, related to a call in progress ........................................................ 33

A.3.2.4 Information on non-call related Supplementary Services ........................................................................... 33

A.3.3 Selection of parameters for IRI records ............................................................................................................ 34

A.3.4 Coding of parameters in IRI records ................................................................................................................ 36

A.3.5 Information content of the IRI record types ..................................................................................................... 37

A.4 HI3: interface port for Content of Communication ................................................................................ 37

A.4.0 General ............................................................................................................................................................. 37

A.4.1 Delivery of Content of Communication (CC) .................................................................................................. 37

A.4.1.0 General ........................................................................................................................................................ 37

A.4.1.1 Delivery of TETRA CC over circuit switched handover networks ............................................................ 38

A.4.2 Delivery of packetized Content of Communication (CC) (general) ................................................................. 38

A.4.2.0 General ........................................................................................................................................................ 38

A.4.2.1 Delivery of TETRA CC over packet switched handover networks ............................................................ 39

A.4.3 Control information for circuit switched Content of Communication (CC) ..................................................... 39

A.4.4 Exception handling ........................................................................................................................................... 40

A.4.4.1 Failure of CC links ...................................................................................................................................... 40

A.4.4.2 Fault reporting ............................................................................................................................................ 40

A.4.5 Security requirements at the interface port HI3 ................................................................................................ 41

A.4.5.0 General ........................................................................................................................................................ 41

A.4.5.1 LI access verification .................................................................................................................................. 41

A.4.5.2 Access protection ........................................................................................................................................ 41

A.4.5.3 Authentication ............................................................................................................................................. 41

A.5 LI procedures for circuit switched supplementary services ................................................................... 42

A.5.1 General ............................................................................................................................................................. 42

A.5.2 CC link Impact ................................................................................................................................................. 44

A.5.3 IRI impact, general principle for sending IRI records ...................................................................................... 44

A.5.4 Multi party calls - general principles, options A, B .......................................................................................... 45

A.5.4.0 General ........................................................................................................................................................ 45

A.5.4.1 CC links for active and non-active calls (option A) .................................................................................... 45

A.5.4.2 Reuse of CC links for active calls (option B) ............................................................................................. 45

A.5.5 Subscriber Controlled Input (SCI): Activation/Deactivation/Interrogation of services ................................... 46

A.6 Detailed procedures for circuit switched supplementary services .......................................................... 46

A.6.1 Advice of Charge services (AOC) .................................................................................................................... 46

A.6.2 Call Waiting (CW) ........................................................................................................................................... 46

A.6.2.1 Call Waiting (CW) at target: CC links ........................................................................................................ 46

A.6.2.2 Call Waiting: IRI records ............................................................................................................................ 47

A.6.2.2.1 Target is served user.............................................................................................................................. 47

A.6.2.2.2 Other party is served user ...................................................................................................................... 47

A.6.3 Call Hold/Retrie ve ............................................................................................................................................ 47

A.6.3.1 CC links for active and non-active calls (option A) .................................................................................... 47

A.6.3.2 Reuse of CC links for active calls (option B) ............................................................................................. 47

ETSI
---------------------- Page: 6 ----------------------
SIST ES 201 671 V3.2.1:2019
5 ETSI ES 201 671 V3.2.1 (2018-05)

A.6.3.3 IRI records .................................................................................................................................................. 47

A.6.3.3.1 Invocation of Call Hold or Retrieve by target ....................................................................................... 47

A.6.3.3.2 Invocation of Hold or Retrieve by other parties .................................................................................... 47

A.6.4 Explicit Call Transfer (ECT) ............................................................................................................................ 47

A.6.4.1 Explicit Call Transfer (ECT), CC link ........................................................................................................ 47

A.6.4.2 Explicit Call Transfer (ECT), IRI records .................................................................................................. 48

A.6.5 Calling Line Identification Presentation (CLIP) (IRI Records) ........................................................................ 48

A.6.5.1 Call originated by target (other party is served user) .................................................................................. 48

A.6.5.2 Call terminated at target (target is served user) .......................................................................................... 48

A.6.6 Calling Line Identification Restriction (CLIR) ................................................................................................ 48

A.6.7 COnnected Line identification Presentation (COLP) ....................................................................................... 48

A.6.7.1 Call terminated at target (other party is served user) .................................................................................. 48

A.6.7.2 Call originated by target (target is served user) .......................................................................................... 48

A.6.8 COnnected Line identification Restriction (COLR) ......................................................................................... 48

A.6.9 Closed User Group (CUG) ............................................................................................................................... 49

A.6.10 Completion of Call to Busy Subscriber (CCBS) .............................................................................................. 49

A.6.11 CONFerence call, add-on (CONF) ................................................................................................................... 49

A.6.11.1 CONFerence calls, add on: CC links .......................................................................................................... 49

A.6.11.2 Conference calls: IRI records...................................................................................................................... 49

A.6.12 Three Party Service (Conference) .................................................................................................................... 49

A.6.12.1 CC links ...................................................................................................................................................... 49

A.6.12.2 Three Party Service, IRI Records ............................................................................................................... 49

A.6.13 Meet-Me Conference (MMC) .......................................................................................................................... 49

A.6.14 Direct Dialling In (DDI) ................................................................................................................................... 50

A.6.15 Multiple Subscriber Number (MSN) ................................................................................................................ 50

A.6.16 DIVersion services (DIV) ................................................................................................................................ 50

A.6.16.0 General ........................................................................................................................................................ 50

A.6.16.1 Call Diversion by target .............................................................................................................................. 50

A.6.16.1.1 Call Diversion by target, CC links ........................................................................................................ 50

A.6.16.1.2 Call Diversion by target, IRI records .................................................................................................... 51

A.6.16.2 Forwarded call terminated at target ............................................................................................................ 51

A.6.16.3 Call from target forwarded ......................................................................................................................... 51

A.6.17 Variants of call diversion services .................................................................................................................... 51

A.6.18 Void .................................................................................................................................................................. 51

A.6.19 Malicious Call IDentification (MCID) ............................................................................................................. 51

A.6.20 SUBaddressing (SUB) ...................................................................................................................................... 51

A.6.21 Terminal Portability (TP) ................................................................................................................................. 51

A.6.21.1 CC links ...................................................................................................................................................... 51

A.6.21.2 IRI records .................................................................................................................................................. 51

A.6.21.2.1 Invocation of Terminal Portability by target ......................................................................................... 51

A.6.21.2.2 Invocation of Terminal Portability by other parties .............................................................................. 52

A.6.22 User-to-User Signalling (UUS) ........................................................................................................................ 52

A.6.23 Abbreviated Address (AA) ............................................................................................................................... 52

A.6.24 Fixed Destination Call (FDC) .......................................................................................................................... 52

A.6.25 Alarm Call (AC)/Wake-Up Service (WUS) ..................................................................................................... 52

A.6.26 Incoming Call Barring (ICB)............................................................................................................................ 52

A.6.27 Outgoing Call Barring (OCB) .......................................................................................................................... 52

A.6.28 Completion of Calls on No Reply (CCNR) ...................................................................................................... 52

A.6.29 Reverse charging .............................................................................................................................................. 52

A.6.30 Line hunting ..................................................................................................................................................... 53

A.6.31 Message Wait Indication (MWI) ...................................................................................................................... 53

A.6.32 Name display .................................................................................................................................................... 53

A.6.33 Tones, announcements ..................................................................................................................................... 53

A.7 Void ........................................................................................................................................................ 53

A.8 GSM circuit switched technology annex ................................................................................................ 53

A.8.1 Functional architecture ..................................................................................................................................... 53

A.8.2 Correlation of CC and IRI (see clause 6) ......................................................................................................... 54

A.8.3 HI3 (delivery of CC) ........................................................................................................................................ 54

A.8.4 HI2 (delivery of IRI) ........................................................................................................................................ 54

A.9 TETRA technology annex ...................................................................................................................... 56

ETSI
---------------------- Page: 7 ----------------------
SIST ES 20
...

Questions, Comments and Discussion

Ask us and Technical Secretary will try to provide an answer. You can facilitate discussion about the standard in here.