SIST-TS ETSI/TS 102 657 V1.27.1:2021

TECHNICAL SPECIFICATION
Lawful Interception (LI);
Retained data handling;
Handover interface for the request and
delivery of retained data

2 ETSI TS 102 657 V1.27.1 (2021-04)

Reference
RTS/LI-00199
Keywords
handover, retention
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ETSI
3 ETSI TS 102 657 V1.27.1 (2021-04)
Contents
Intellectual Property Rights . 8
Foreword . 8
Modal verbs terminology . 8
1 Scope . 9
2 References . 9
2.1 Normative references . 9
2.2 Informative references . 12
3 Definition of terms, symbols and abbreviations . 12
3.1 Terms . 12
3.2 Symbols . 13
3.3 Abbreviations . 13
4 Overview of handover interface . 15
4.1 Reference model . 15
4.2 Structure of document and applicable communication domains . 16
4.3 Categories of retained data . 17
4.4 Handover Interface port 1 (HI-A) and Handover Interface port 2 (HI-B) . 17
4.5 Model used for the RDHI . 18
5 Handover interface message flows . 18
5.1 Overview . 18
5.1.1 Summary of this clause . 18
5.1.2 Message flow modes . 18
5.1.3 Delivery cases . 19
5.1.4 "Active" requests and "closed" requests . 19
5.1.5 Errors and failure situations . 19
5.1.5.1 Error and failure types . 19
5.1.5.2 Request process failure feedback . 20
5.1.5.3 Other errors . 20
5.1.5.4 Missing messages . 20
5.1.6 Cancelling a request . 21
5.1.7 Delivery of results . 21
5.1.8 State diagram . 22
5.1.9 Supplementary Messages . 23
5.2 Message flows for general situation . 23
5.2.1 Delivery of a response . 23
5.2.2 Cancellation of request . 24
5.2.3 Multi-part delivery . 25
5.3 Message flows for Authorized-Organization-initiated scenario . 26
5.3.1 Delivery of results or a failure response . 26
5.3.2 Cancellation of request . 27
5.3.3 Multi-part delivery . 28
5.4 Message types for HI-A and HI-B . 29
5.5 HI-A and HI-B addressing. 30
6 Definition of the elements for retained data messages . 30
6.1 Header information. 30
6.1.1 Use of header information . 30
6.1.2 RequestID field specification . 30
6.1.3 CSP Identifiers . 31
6.1.3.1 Use of CSP identifiers (CSPID) . 31
6.1.3.2 Third Party CSP Identifier (thirdPartyCSPID) . 31
6.1.4 Timestamp (timeStamp) . 31
6.1.5 RequestType (requestType) . 31
6.1.6 RequestFlag (requestFlag) . 31
6.2 Retained Data response . 31
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4 ETSI TS 102 657 V1.27.1 (2021-04)
6.2.1 General . 31
6.2.2 Additional information in response messages. 32
6.2.2.1 Record number (recordNumber) . 32
6.2.2.2 Response status (ResponseStatus) . 32
6.2.3 Volatile information . 32
6.2.4 Unavailable parameters . 32
6.3 Retained Data requests . 33
6.3.1 Information contained within a request . 33
6.3.2 Format of a request . 33
6.3.3 Additional information in requests . 34
6.3.3.1 Priority of a request . 34
6.3.3.2 Maximum hits . 34
6.3.3.3 Maximum records per batch . 34
6.3.3.4 Number of records limit . 35
6.4 Error messages . 35
7 Data exchange techniques . 35
7.1 General . 35
7.2 HTTP data exchange . 35
7.2.1 Basic configuration . 35
7.2.2 Single client/server . 36
7.2.3 Mutual client/server . 36
7.2.4 Details common to both single and mutual cases . 36
7.3 Direct TCP data exchange . 36
7.3.0 General . 36
7.3.1 Application layer . 37
7.3.2 Transport layer . 37
7.3.2.1 Introduction . 37
7.3.2.2 TCP settings . 37
7.3.3 Network layer . 37
7.3.4 Delivery networks . 37
8 Security Measures . 38
8.1 General . 38
8.2 Connection Level Security . 38
8.3 Application Level Security . 38
8.4 Technical Security Measures . 39
8.4.1 General . 39
8.4.2 Connection Level . 39
8.4.3 Application Level . 39
8.4.3.1 Hashes . 39
8.4.3.2 Digital Signatures . 39
8.4.3.3 HI-B Non-Repudiation . 39
8.4.3.4 Digital Signatures and Message Structure . 40
Annex A (normative): Data fields . 41
A.1 Summary . 41
A.1.1 Introduction to data fields . 41
A.1.2 Choice of data modelling language . 41
A.1.3 Overview . 41
A.2 Parameter definition for common fields . 42
A.2.1 RetainedDataHeader . 42
A.2.1.1 Parameters. 42
A.2.1.2 RequestID parameters . 42
A.2.2 RetainedDataPayload . 42
A.2.2.1 RequestMessage parameters . 42
A.2.2.2 RequestAcknowledgement parameters . 43
A.2.2.3 ResponseMessage parameters . 43
A.2.2.4 GetStatusMessage parameters . 43
A.2.2.5 StatusMessage parameters . 43
A.2.2.6 ErrorMessage parameters . 44
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5 ETSI TS 102 657 V1.27.1 (2021-04)
A.2.3 GenericSubscriberInfo . 44
A.2.3.1 Parameters. 44
A.2.3.2 OrganizationInfo parameters . 44
A.2.3.3 IndividualInfo parameters . 45
A.2.3.4 ContractInformation parameters . 45
A.2.4 PaymentDetails . 46
A.3 ASN.1 definitions . 46
A.3.1 General . 46
A.3.1.1 ASN.1 syntax tree . 46
A.3.1.2 General remarks on ASN.1 . 46
A.3.2 ASN.1 Definitions for message headers . 47
A.3.2.1 Message wrappers . 47
A.3.2.2 Message headers . 47
A.3.3 ASN.1 definitions for common fields. 52
A.3.4 Schematic representation of top level ASN.1 . 56
Annex B (normative): Service-specific details for telephony services . 58
B.1 Scope . 58
B.2 Telephony fields . 58
B.2.1 General . 58
B.2.2 Telephony Subscriber . 58
B.2.2.0 General . 58
B.2.2.1 subscriber ID . 58
B.2.2.2 genericSubscriberInfo . 59
B.2.2.3 telephonySubscriberInfo . 59
B.2.2.4 subscribedTelephonyServices . 59
B.2.2.4.1 Description . 59
B.2.3 Telephony Billing Details . 60
B.2.3.0 General . 60
B.2.3.1 BillingRecords . 60
B.2.4 TelephonyServiceUsage . 61
B.2.4.1 Parameters. 61
B.2.4.2 PartyInformation . 61
B.2.4.3 SMSInformation . 62
B.2.4.4 MmsInformation . 62
B.2.5 TelephonyDevice. 62
B.2.5.1 General . 62
B.2.6 TelephonyNetworkElement . 63
B.2.6.1 General . 63
B.2.6.2 Location parameters . 63
B.2.6.2.1 General . 63
B.2.6.2.2 GSM Location Information . 64
B.2.6.2.3 UMTS Location Information . 65
B.2.6.2.4 Extended Location . 65
B.2.6.3 TransmitterDetails parameters . 65
B.2.6.3.1 General . 65
B.3 ASN.1 definitions for telephony . 65
B.4 Schematic view of ASN.1 definitions . 80
Annex C (normative): Service-specific details for asynchronous message services . 82
C.1 Scope . 82
C.2 Descriptions . 82
C.2.1 General . 82
C.2.2 MsgSubscriber . 83
C.2.2.0 General . 83
C.2.2.1 MsgSubscriberID . 83
C.2.2.2 MsgStore . 83
C.2.2.3 MsgStoreID. 83
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6 ETSI TS 102 657 V1.27.1 (2021-04)
C.2.2.4 MsgAddress . 84
C.2.2.5 MsgProviderID . 84
C.2.2.6 MsgForwardingAddresses . 84
C.2.2.7 MsgStoreSubscriberRelatedIDs . 84
C.2.3 MsgServiceUsage . 84
C.2.3.0 General . 84
C.2.3.1 MsgTransmission . 84
C.2.3.2 MsgStoreOperation . 85
C.2.4 MsgBillingDetails parameters . 85
C.2.4.0 General . 85
C.2.4.1 MsgBillingRecords . 86
C.3 ASN.1 definitions for asynchronous message services . 86
C.4 Schematic view of ASN.1 definitions . 89
Annex D (normative): Service-specific details for synchronous multi-media services . 90
D.1 Scope . 90
D.2 Multimedia fields . 90
D.2.1 General . 90
D.2.2 Multimedia Subscriber . 90
D.2.2.0 General . 90
D.2.2.1 subscriberID . 91
D.2.2.2 genericSubscriberInfo . 91
D.2.2.3 multimediaSubscriberInfo . 91
D.2.2.4 subscribedMultimediaServices . 91
D.2.2.4.1 Description . 91
D.2.3 MultimediaBillingDetails . 92
D.2.3.1 MultimediaBillingDetails . 92
D.2.3.2 MultimediaBillingAddress . 93
D.2.3.3 MultimediaBillingRecords . 93
D.2.4 Multimedia ServiceUsage . 93
D.2.4.1 Parameters. 93
D.2.4.2 PartyInformation . 94
D.2.4.3 IMSInformation . 95
D.2.4.4 MediaComponents . 95
D.2.5 MultimediaDevice . 96
D.2.5.1 General . 96
D.3 ASN.1 definitions for Multimedia . 96
D.4 Schematic view of ASN.1 definitions . 103
Annex E (normative): Service-specific details for network access services . 105
E.1 Scope . 105
E.2 Descriptions . 105
E.2.1 General . 105
E.2.2 NASubscriber . 105
E.2.3 NAServiceSubscription . 106
E.2.4 NAServiceUsage . 106
E.2.5 NADevice . 112
E.2.6 NANwElement . 112
E.2.7 NABillingDetails . 112
E.3 ASN.1 definitions for network access services . 113
E.4 Schematic view of ASN.1 definitions . 123
Annex F (informative): Basic set of search routines for Retained Data . 124
F.1 Example set of search routines . 124
F.1.1 Overview . 124
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7 ETSI TS 102 657 V1.27.1 (2021-04)
F.1.2 Summary of search case . 124
F.1.3 Subscriber records . 124
F.2 Telephony data . 125
F.2.1 Telephony subscriber . 125
F.2.2 Telephony billing details . 125
F.2.3 Telephony service usage . 125
F.2.4 Telephony network element . 126
F.3 Messaging data . 126
F.3.1 Message subscriber. 126
F.3.2 Message service usage . 126
F.4 Network Access data . 127
F.4.1 NA subscriber . 127
F.4.2 NA service usage . 127
Annex G (informative): Examples of search routines . 128
G.1 Introduction . 128
G.2 Example for telephony subscriber query in clause F.2.1 . 128
G.3 Example for telephony service usage query in clause F.2.3 . 129
Annex H (informative): Further information on data categories . 130
H.1 General . 130
H.2 Further information on subscriber data . 130
H.2.1 Subscriber data requests . 130
H.2.2 Generic subscriber data records . 130
H.2.3 Service Specific Subscriber Reply Data . 131
H.3 Further information on usage data . 131
H.3.1 Usage requests . 131
H.3.2 Usage data categories . 132
H.3.3 Usage: Traffic Data (Reply) . 132
H.3.4 Usage: Traffic Data related information (Reply) . 132
H.3.5 Usage: communication independent user activities (Reply) . 132
H.3.6 Usage: network Activity Data (Reply) . 132
H.4 Further information on network element data . 133
H.4.1 Network element requests . 133
H.4.2 Network Configuration Data Reply Data . 133
Annex I (informative): Manual techniques . 134
Annex J (informative): Single versus multi-part deliveries . 135
J.1 General . 135
J.2 Criteria for multi-part delivery . 135
J.3 Subscriptions into the future. 136
Annex K (informative): Change Request History . 137
History . 141

ETSI
8 ETSI TS 102 657 V1.27.1 (2021-04)
Intellectual Property Rights
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