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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 V1.1.2 (2008-12)
Reference
RTS/LI-00057
Keywords
handover, retention
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3 ETSI TS 102 657 V1.1.2 (2008-12)
Contents
Intellectual Property Rights . 7
Foreword . 7
1 Scope . 8
2 References . 8
2.1 Normative references . 8
2.2 Informative references . 9
3 Definitions and abbreviations . 10
3.1 Definitions . 10
3.2 Abbreviations . 10
4 Overview of handover interface . 11
4.1 Reference model . 11
4.2 Structure of document and applicable communication domains . 13
4.3 Categories of retained data . 14
4.4 Handover Interface port 1 (HI-A) and Handover Interface port 2 (HI-B) . 14
4.5 Model used for the RDHI . 15
5 Handover interface message flows . 15
5.1 Introduction . 15
5.1.1 Summary of this clause . 15
5.1.2 Message flow modes . 15
5.1.3 Delivery cases . 16
5.1.4 "Active" requests and "closed" requests . 16
5.1.5 Errors and failure situations . 16
5.1.5.1 Error and failure types . 16
5.1.5.2 Request process failure feedback . 16
5.1.5.3 Other errors . 17
5.1.6 Cancelling a request . 17
5.1.7 Delivery of results . 17
5.1.8 State diagram . 17
5.2 Message flows for general situation . 19
5.2.1 Delivery of a response . 19
5.2.2 Cancellation of request . 20
5.2.3 Multi-part delivery . 21
5.3 Message flows for Authorized-Organization-initiated scenario . 21
5.3.1 Delivery of results or a failure response . 21
5.3.2 Cancellation of request . 23
5.3.3 Multi-part delivery . 23
5.4 HI-A and HI-B addressing. 24
6 Definition of the elements for retained data messages . 25
6.1 Header information. 25
6.1.1 Use of header information . 25
6.1.2 RequestID field specification . 25
6.1.3 CSP Identifiers . 25
6.1.3.1 Use of CSP identifiers . 25
6.1.3.2 Third Party CSP Identifier . 25
6.1.4 Timestamp . 26
6.1.5 Additional information in error messages . 26
6.2 Retained Data response . 26
6.2.1 General . 26
6.2.2 Additional information in response messages. 26
6.2.2.1 Record number . 26
6.2.2.2 Response status . 26
6.2.3 Volatile information . 26
6.2.4 Unavailable parameters . 27
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4 ETSI TS 102 657 V1.1.2 (2008-12)
6.3 Retained Data requests . 27
6.3.1 Information contained within a request . 27
6.3.2 Format of a request . 27
6.3.3 Additional information in requests . 28
6.3.3.1 Priority of a request . 28
6.3.3.2 Maximum hits . 28
7 Data exchange techniques . 28
7.1 General . 28
7.2 HTTP data exchange . 29
7.2.1 Basic configuration . 29
7.2.2 Single client/server . 29
7.2.3 Mutual client/server . 29
7.2.4 Details common to both single and mutual cases . 29
7.3 Direct TCP data exchange . 30
7.3.1 Transport layer . 30
7.3.1.1 Introduction. 30
7.3.1.2 TCP settings . 30
7.3.2 Network layer . 30
7.3.3 Delivery networks . 30
8 Security Measures . 30
8.1 General . 30
8.2 Connection Level Security . 30
8.3 Application Level Security . 31
8.4 Technical Security Measures . 31
8.4.1 General . 31
8.4.2 Connection Level . 32
8.4.3 Application Level . 32
8.4.3.1 Hashes . 32
8.4.3.2 Digital Signatures . 32
8.4.3.3 HI-B Non-Repudiation . 32
8.4.3.4 Digital Signatures and Message Structure . 32
Annex A (normative): Data fields . . 33
A.1 Summary . 33
A.1.1 Introduction to data fields . 33
A.1.2 Choice of data modelling language . 33
A.1.3 Overview . 33
A.2 Parameter definition for common fields . 34
A.2.1 RetainedDataHeader . 34
A.2.1.1 Parameters. 34
A.2.1.2 RequestID parameters . 34
A.2.2 RetainedDataPayload . 34
A.2.2.1 RequestMessage parameters . 34
A.2.2.2 RequestAcknowledgement parameters . 34
A.2.2.3 ResponseMessage parameters . 35
A.2.2.4 GetStatusMessage parameters . 35
A.2.2.5 StatusMessage parameters . 35
A.2.3 GenericSubscriberInfo . 36
A.2.3.1 Parameters. 36
A.2.3.2 OrganizationInfo parameters . 36
A.2.3.3 IndividualInfo parameters . 36
A.3 ASN.1 definitions . 37
A.3.1 General . 37
A.3.1.1 ASN.1 syntax tree . 37
A.3.1.2 General remarks on ASN.1 . 37
A.3.2 ASN.1 Definitions for message headers . 38
A.3.2.1 Message wrappers . 38
A.3.2.2 Message headers . 38
A.3.3 ASN.1 definitions for common fields. 42
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5 ETSI TS 102 657 V1.1.2 (2008-12)
A.3.4 Schematic representation of top level ASN.1 . 44
Annex B (normative): Service-specific details for telephony services . 45
B.1 Scope . 45
B.2 Telephony fields . 45
B.2.1 General . 45
B.2.2 Telephony Subscriber . 45
B.2.2.1 Subscriber ID . 45
B.2.2.2 GenericSubscriberInfo . 45
B.2.2.3 TelephonySubscriberInfo . 45
B.2.2.4 SubscribedTelephonyServices . 46
B.2.2.4.1 Description . 46
B.2.2.4.2 BillingDetails . 46
B.2.2.4.3 BillingRecords . 46
B.2.3 Telephony ServiceUsage . 47
B.2.3.1 Parameters. 47
B.2.3.2 PartyInformation . 47
B.2.4 TelephonyDevice. 48
B.2.4.1 General . 48
B.2.5 TelephonyNetworkElement . 48
B.2.5.1 General . 48
B.2.5.2 Location parameters . 48
B.2.5.2.1 General . 48
B.2.5.2.2 GSM Location Information . 49
B.2.5.2.3 UMTS Location Information . 49
B.3 ASN.1 definitions for telephony . 49
Annex C (normative): Service-specific details for asynchronous message services . 58
C.1 Scope . 58
C.2 Descriptions . 58
C.2.1 General . 58
C.2.2 MsgSubscriber . 58
C.2.3 MsgSubscriberId . 59
C.2.4 MsgStore . 59
C.2.5 MsgStoreId . 59
C.2.6 MsgAddress . 59
C.2.7 MsgProviderId . 59
C.2.8 MsgServiceUsage . 59
C.2.9 MsgTransmission . 60
C.2.10 MsgStoreOperation . 60
C.3 ASN.1 definitions for asynchronous message services . 60
Annex D (normative): Service-specific details for synchronous multi-media services . 63
D.1 Scope . 63
Annex E (normative): Service-specific details for network access services . 64
E.1 Scope . 64
E.2 Descriptions . 64
E.2.1 General . 64
E.2.2 NASubscriber . 64
E.2.3 NAServiceSubscription . 65
E.2.4 NAServiceUsage . 65
E.2.5 NADevice . 66
E.2.6 NANwElement . 66
E.2.7 NABillingDetails . 66
E.3 ASN.1 definitions for network access services . 67
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6 ETSI TS 102 657 V1.1.2 (2008-12)
Annex F (informative): Basic set of search routines for Retained Data . 71
F.1 Example set of search routines . 71
F.1.1 Introduction . 71
F.1.2 Summary of search case . 71
F.1.3 Subscriber records . 71
F.2 Telephony data . 72
F.2.1 Telephony subscriber . 72
F.2.2 Telephony billing details . 72
F.2.3 Telephony service usage .
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