ETSI TS 102 657 V2.1.1 (2023-08)

Lawful Interception (LI); Retained data handling; Handover interface for the request and delivery of retained data

RTS/LI-00243

General Information

• Status: Not Published
• Technical Committee: LI - Lawful Interception
• Current Stage: 12 - Citation in the OJ (auto-insert)
• Due Date: 07-Sep-2023
• Completion Date: 31-Aug-2023

Standards Content (Sample)

ETSI TS 102 657 V2.1.1 (2023-08)






TECHNICAL SPECIFICATION
Lawful Interception (LI);
Retained data handling;
Handover interface for the request and
delivery of retained data

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2 ETSI TS 102 657 V2.1.1 (2023-08)

Reference
RTS/LI-00243
Keywords
handover, retention
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ETSI

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3 ETSI TS 102 657 V2.1.1 (2023-08)
Contents
Intellectual Property Rights . 9
Foreword . 9
Modal verbs terminology . 9
1 Scope . 10
2 References . 10
2.1 Normative references . 10
2.2 Informative references . 13
3 Definition of terms, symbols and abbreviations . 13
3.1 Terms . 13
3.2 Symbols . 14
3.3 Abbreviations . 14
4 Overview of handover interface . 17
4.1 Reference model . 17
4.2 Structure of document and applicable communication domains . 18
4.3 Categories of retained data . 19
4.4 Handover Interface port 1 (HI-A) and Handover Interface port 2 (HI-B) . 19
4.5 Model used for the RDHI . 20
5 Handover interface message flows . 20
5.1 Overview . 20
5.1.1 Summary of this clause . 20
5.1.2 Message flow modes . 20
5.1.3 Delivery cases . 21
5.1.4 "Active" requests and "closed" requests . 21
5.1.5 Errors and failure situations . 21
5.1.5.1 Error and failure types . 21
5.1.5.2 Request process failure feedback . 22
5.1.5.3 Other errors . 22
5.1.5.4 Missing messages . 22
5.1.6 Cancelling a request . 23
5.1.7 Delivery of results . 23
5.1.8 State diagram . 24
5.1.9 Supplementary Messages . 25
5.2 Message flows for general situation . 25
5.2.1 Delivery of a response . 25
5.2.2 Cancellation of request . 26
5.2.3 Multi-part delivery . 27
5.3 Message flows for Authorized-Organization-initiated scenario . 28
5.3.1 Delivery of results or a failure response . 28
5.3.2 Cancellation of request . 29
5.3.3 Multi-part delivery . 30
5.4 Message types for HI-A and HI-B . 31
5.5 HI-A and HI-B addressing. 32
6 Definition of the elements for retained data messages . 32
6.1 Header information. 32
6.1.1 Use of header information . 32
6.1.2 RequestID field specification . 32
6.1.3 CSP Identifiers . 33
6.1.3.1 Use of CSP Identifiers (CSPID) . 33
6.1.3.2 Third Party CSP Identifier (thirdPartyCSPID) . 33
6.1.4 Timestamp (timeStamp) . 33
6.1.5 RequestType (requestType) . 33
6.1.6 RequestFlag (requestFlag) . 33
6.2 Retained Data response . 33
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4 ETSI TS 102 657 V2.1.1 (2023-08)
6.2.1 General . 33
6.2.2 Additional information in response messages. 34
6.2.2.1 Record number (recordNumber) . 34
6.2.2.2 Response status (ResponseStatus) . 34
6.2.3 Volatile information . 34
6.2.4 Unavailable parameters . 34
6.3 Retained Data requests . 35
6.3.1 Information contained within a request . 35
6.3.2 Format of a request . 35
6.3.3 Additional information in requests . 36
6.3.3.1 Priority of a request . 36
6.3.3.2 Maximum hits . 36
6.3.3.3 Maximum records per batch . 36
6.3.3.4 Number of records limit . 37
6.4 Error messages . 37
7 Data exchange techniques . 37
7.1 General . 37
7.2 HTTP data exchange . 37
7.2.1 Basic configuration . 37
7.2.2 Single client/server . 38
7.2.3 Mutual client/server . 38
7.2.4 Details common to both single and mutual cases . 38
7.3 Direct TCP data exchange . 38
7.3.0 General . 38
7.3.1 Application layer . 39
7.3.2 Transport layer . 39
7.3.2.1 Introduction . 39
7.3.2.2 TCP settings . 39
7.3.3 Network layer . 39
7.3.4 Delivery networks . 39
8 Security Measures . 40
8.1 General . 40
8.2 Connection Level Security . 40
8.3 Application Level Security . 40
8.4 Technical Security Measures . 41
8.4.1 General . 41
8.4.2 Connection Level . 41
8.4.3 Application Level . 41
8.4.3.1 Hashes . 41
8.4.3.2 Digital Signatures . 41
8.4.3.3 HI-B Non-Repudiation . 41
8.4.3.4 Digital Signatures and Message Structure . 42
Annex A (normative): Data fields . 43
A.1 Summary . 43
A.1.1 Introduction to data fields . 43
A.1.2 Choice of data modelling language . 43
A.1.3 Overview . 43
A.1.4 Backwards Compatibility . 44
A.2 Parameter definition for common fields . 44
A.2.1 RetainedDataHeader . 44
A.2.1.1 Parameters. 44
A.2.1.2 RequestID parameters . 44
A.2.2 RetainedDataPayload . 44
A.2.2.1 RequestMessage parameters . 44
A.2.2.2 RequestAcknowledgement parameters . 45
A.2.2.3 ResponseMessage parameters . 45
A.2.2.4 GetStatusMessage parameters . 45
A.2.2.5 StatusMessage parameters . 46
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5 ETSI TS 102 657 V2.1.1 (2023-08)
A.2.2.6 ErrorMessage parameters . 46
A.2.3 GenericSubscriberInfo . 46
A.2.3.1 Parameters. 46
A.2.3.2 OrganizationInfo parameters . 46
A.2.3.3 IndividualInfo parameters . 47
A.2.3.4 ContractInformation parameters . 48
A.2.4 PaymentDetails . 48
A.3 ASN.1 definitions . 49
A.3.1 General . 49
A.3.1.1 ASN.1 syntax tree . 49
A.3.1.2 General remarks on ASN.1 . 49
A.3.2 ASN.1 Definitions for message headers . 49
A.3.2.1 Message wrappers . 49
A.3.2.2 Message headers . 49
A.3.3 ASN.1 definitions for common fields. 50
A.3.4 Void . 50
Annex B (normative): Service-specific details for telephony services . 51
B.1 Scope . 51
B.2 Telephony fields . 51
B.2.1 General . 51
B.2.2 Telephony Subscriber . 51
B.2.2.0 General . 51
B.2.2.1 subscriber ID . 51
B.2.2.2 genericSubscriberInfo . 52
B.2.2.3 telephonySubscriberInfo . 52
B.2.2.4 subscribedTelephonyServices . 52
B.2.2.4.1 Description . 52
B.2.3 Telephony Billing Details . 53
B.2.3.0 General . 53
B.2.3.1 BillingRecords . 53
B.2.4 TelephonyServiceUsage . 54
B.2.4.1 Parameters. 54
B.2.4.2 PartyInformation . 54
B.2.4.3 SMSInformation . 55
B.2.4.4 MmsInformation . 55
B.2.5 TelephonyDevice. 56
B.2.5.1 General . 56
B.2.6 TelephonyNetworkElement . 56
B.2.6.1 General . 56
B.2.6.2 Location parameters . 56
B.2.6.2.1 General . 56
B.2.6.2.2 GSM Location Information . 58
B.2.6.2.3 UMTS Location Information . 58
B.2.6.2.4 Extended Location . 58
B.2.6.3 TransmitterDetails parameters . 59
B.2.6.3.1 General . 59
B.3 ASN.1 definitions for telephony . 59
B.4 Void . 59
Annex C (normative): Service-specific details for asynchronous message services . 60
C.1 Scope . 60
C.2 Descriptions . 60
C
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