1、 ETSI TS 102 836-1 V1.1.1 (2009-11)Technical Specification Access, Terminals, Transmission and Multiplexing (ATTM);Lawful Interception (LI);Part 1: Interception of IP Telephony Service on Cable Operators Broadband IP Network: Internal Network InterfacesETSI ETSI TS 102 836-1 V1.1.1 (2009-11)2Referen
2、ce DTS/ATTM-02007-1 Keywords access, cable, lawful interception 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 but non lucratif enregistre la Sous-Prfecture de Grasse (06) N 7803/88
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6、No part may be reproduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2009. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTM, TIPHONTM, the TIPHON logo and the ETSI logo a
7、re Trade Marks of ETSI registered for the benefit of its Members. 3GPPTM is a Trade Mark of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. LTE is a Trade Mark of ETSI currently being registered for the benefit of its Members and of the 3GPP Organizational Par
8、tners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 102 836-1 V1.1.1 (2009-11)3Contents Intellectual Property Rights 4g3Foreword . 4g3Introduction 4g31 Scope 5g31.1 Requirements notation 5g32 References 6g32.1 Normative references . 6g32.2 Informativ
9、e references 7g33 Definitions and abbreviations . 7g33.1 Definitions 7g33.2 Abbreviations . 8g34 Requirements 9g35 Overview 10g36 Internal Cable Network Interfaces 11g36.1 Introduction 11g36.2 INI1 11g36.3 INI2a 12g36.4 INI3 - Call Content (CC) of Communication Interface 12g36.4.1 Call Content Conne
10、ction Identifier . 13g36.4.2 Original IP Header 14g36.4.3 Original UDP Header 14g36.4.4 Original RTP Header 14g36.4.5 Original Payload . 14g36.5 SBCF (SNMP based Configuration Function) . 14g37 LI Cable Broadband IP Network Architecture . 15g37.1 Dimensioning and Capacity . 16g37.2 Elements of Cable
11、 Broadband IP Network . 16g37.3 Functional Description . 16g37.3.1 LI Process: Interception of IP Telephony Signalling 17g37.3.2 LI Process: interception of on-net calls . 18g37.3.3 LI Process: interception of off-net calls 21g37.3.4 Details: interception of hairpin calls . 23g38 Security. 24g3Annex
12、 A (informative): Requirements listed in Council Resolution of 17 January 1995 25g3History 27g3ETSI ETSI TS 102 836-1 V1.1.1 (2009-11)4Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these esse
13、ntial IPRs, if any, is publicly available for ETSI members and non-members, and can be found in ETSI SR 000 314: “Intellectual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest update
14、s are available on the ETSI Web server (http:/webapp.etsi.org/IPR/home.asp). Pursuant to the ETSI IPR Policy, no investigation, including IPR searches, has been carried out by ETSI. No guarantee can be given as to the existence of other IPRs not referenced in ETSI SR 000 314 (or the updates on the E
15、TSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Access, Terminals, Transmission and Multiplexing (ATTM). NOTE: An earlier specification to the current document referring t
16、o Lawful Interception within a Cable Network was produced by ETSI Access and Terminals, subgroup AT-D (Digital). The present document is part 1 of a multi-part deliverable covering Data Over Cable Systems, as identified below: Part 1: “Interception of IP Telephony Service on Cable Operators Broadban
17、d IP Network: Internal Network Interfaces“; Part 2: “Interception of IP Data Service on Cable Operators Broadband IP Network: Internal Network Interfaces“; Part 3: “Interception of email Service on Cable Operators Broadband IP Network: Internal Network Interfaces“. Introduction The cable industry in
18、 Europe and across other global regions have already deployed broadband cable television Hybrid Fibre/Coaxial (HFC) IP data and telephony networks running the Cable Modem Protocol. The cable industry is in the rapid stages of implementing interfaces that provide the capabilities for Lawful Intercept
19、ion (LI) of these services in accordance with requirements of Law Enforcement Agencies. The cable industry has recognized the urgent need to develop ETSI Technical Specifications aimed at developing interoperable interface specifications and mechanisms for LI of IP telephony communications services.
20、 The present document specifies the Lawful Interception (LI) and implementation of IP Telephony services within a Cable Operators Broadband IP Network for the purpose of providing such intercepted information to Law Enforcement Agencies (LEAs). ETSI ETSI TS 102 836-1 V1.1.1 (2009-11)51 Scope The pre
21、sent document specifies the internal network interfaces to enable the Lawful Interception (LI) of IP telephony services over cable operators broadband IP Networks. The current document describes the LI functional elements and interfaces for both the NCS based and SIP protocol signalling architecture
22、s within a PacketCable network architecture framework. The present document provides the requirements for the internal cable network interfaces and there functions for those network elements within a Cable Operators network that are involved in the production of the interception of call content and
23、call related information relating to the interception target of IP Telephony communication services. The provision of a LI interface for a Cable Operators Broadband IP Network is a national option, however where it is provided it shall be provided as described in the present document. The structure
24、of LI in telecommunications is in two parts: The internal interface of a network that is built using a particular technology; and, the external interface (known as the Handover Interface) that links the LEA to the network. Between these two parts is described a LI Mediation Device (MD) whose functio
25、ns cater for managing and provisioning the network elements for interception as well as national variances and delivery of the result of interception. The administration of LI is a function that is typically integrated within the manufactures MD but may also be a separate device. For the purpose of
26、the current document the administration function is assumed as integrated within the MD. The subject of the present document is the internal network LI interfaces that lies between the elements of a Cable Operators IP Broadband infrastructure and the functions of the MD. The Handover Interface is ou
27、t of scope of the present document. The current document assumes the delivery requirements specified by ETSI Technical Committee Lawful Intercept (TC LI), ES 201 671 2, TS 101 671 3 and TS 102 232 4. In addition the Handover Interface may be the subject of national regulation and therefore the funct
28、ion of the mediation device for delivery of the intercepted information to the LEA may also be a matter of national regulation. Systems that use SIP based on Packet Cable 2.0 is out of scope of the present document. 1.1 Requirements notation If the present document is implemented, the key words “MUS
29、T“ and “SHALL“ as well as “REQUIRED“ are to be interpreted as indicating a mandatory aspect of the present document. The keywords indicating a certain level of significance of a particular requirement that are used throughout the present document are summarized below. MUST This word or the adjective
30、 “REQUIRED“ means that the item is an absolute requirement of the present document. MUST NOT This phrase means that the item is an absolute prohibition of the present document. SHOULD This word or the adjective “RECOMMENDED“ means that there may exist valid reasons in particular circumstances to ign
31、ore this item, but the full implications should be understood and the case carefully weighed before choosing a different course. SHOULD NOT This phrase means that there may exist valid reasons in particular circumstances when the listed behaviour is acceptable or even useful, but the full implicatio
32、ns should be understood and the case carefully weighed before implementing any behaviour described with this label. MAY This word or the adjective “OPTIONAL“ means that this item is truly optional. One vendor may choose to include the item because a particular marketplace requires it or because it e
33、nhances the product, for example; another vendor may omit the same item. ETSI ETSI TS 102 836-1 V1.1.1 (2009-11)62 References References are either specific (identified by date of publication and/or edition number or version number) or non-specific. For a specific reference, subsequent revisions do
34、not apply. Non-specific reference may be made only to a complete document or a part thereof and only in the following cases: - if it is accepted that it will be possible to use all future changes of the referenced document for the purposes of the referring document; - for informative references. Ref
35、erenced documents which are not found to be publicly available in the expected location might be found at http:/docbox.etsi.org/Reference. NOTE: While any hyperlinks included in this clause were valid at the time of publication ETSI cannot guarantee their long term validity. 2.1 Normative references
36、 The following referenced documents are indispensable for the application of the present document. For dated references, only the edition cited applies. For non-specific references, the latest edition of the referenced document (including any amendments) applies. 1 Council Resolution of 17 January 1
37、995 on the lawful interception of telecommunications. 2 ETSI ES 201 671: “Lawful Interception (LI); Handover interface for the lawful interception of telecommunications traffic“. 3 ETSI TS 101 671: “Lawful Interception (LI); Handover interface for the lawful interception of telecommunications traffi
38、c“. 4 ETSI TS 102 232: “Lawful Interception (LI); Handover specification for IP delivery“. 5 ETSI TS 101 909-4: “Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 4: Network Call Signalling Protocol Partial Endorsement of ITU-T Recomm
39、endation J.162 (11/2005), modified“. 6 IETF RFC 3261: “SIP: Session Initiation Protocol“. 7 CableLabs PKT-SP-EM1.5-I03-070412: “Event Messages“, April 12 2007. 8 IETF RFC 768/ST0006 (August 1980): “User Datagram Protocol“. 9 IETF RFC 1305: “Network Time Protocol (Version 3) Specification, Implementa
40、tion and Analysis“. 10 IETF RFC 2327 (April 1998): “SDP: Session Description Protocol“. 11 IETF RFC 791/STD0005 (September 1981): “Internet Protocol“. 12 IETF RFC 1889 (January 1996): “RTP: A Transport Protocol for Real-Time Applications“. 13 IETF RFC 1890 (January 1996): “RTP Profile for Audio and
41、Video Conferences with Minimal Control“. 14 CableLabs PKT-SP-ES-INF-I04-080425: “Electronic Survellience Intra-Network Specification, April 25, 2008“. 15 Void. ETSI ETSI TS 102 836-1 V1.1.1 (2009-11)716 ETSI ES 201 158: “Telecommunications security; Lawful Interception (LI); Requirements for network
42、 functions“. 17 CableLabs PKT-SP-ESP1.5-IO2-070412: “Electronic Surveillance“. 18 IETF RFC 3924: “Cisco Architecture for Lawful Intercept in IP Networks“. 2.2 Informative references The following referenced documents are not essential to the use of the present document but they assist the user with
43、regard to a particular subject area. For non-specific references, the latest version of the referenced document (including any amendments) applies. i.1 PacketCable 1.5 Security Specification, PKT-SP-SEC1.5-I02-070412, April 12, 2007, Cable Television Laboratories, Inc. i.2 PacketCable 1.5 Network-Ba
44、sed Call Signaling Protocol Specification, PKT-SP-NCS1.5-I03-070412, April 12, 2007, Cable Television Laboratories, Inc. i.3 PacketCable 1.5 Audio/Video Codecs Specification, PKT-SP-CODEC1.5-I02-070412, April 12, 2007, Cable Television Laboratories, Inc. i.4 ETSI TR 102 661: “Lawful Interception (LI
45、); Security framework in Lawful Interception and Retained Data environment“. i.5 ETSI TS 101 331: “Lawful Interception (LI); Requirements of Law Enforcement Agencies“. 3 Definitions and abbreviations 3.1 Definitions For the purposes of the present document, the following terms and definitions apply:
46、 cable modem: layer two termination device that terminates the customer end of the J.112 connection hair-pin call: call that is targeted to a customer on the cable network that has forwarding enabled to a line which is on a different network on-net call: call that is initiated by a customer on the c
47、able network targeted to and delivered to a customer on the same cable network off-net call: call that is initiated by a customer on the cable network and targeted to a customer on another network, or call that is initiated by a customer on another network and targeted and terminated by a customer o
48、n the cable network ETSI ETSI TS 102 836-1 V1.1.1 (2009-11)83.2 Abbreviations For the purposes of the present document, the following abbreviations apply: AP Access Provider CC Call Content CCC Communication Call Content CMTS Cable Modem Termination System CRD Call Related Details DA Destination Add
49、ressEM Event MessageGW Gateway HFC Hybrid Fiber Coax HI Handover Interface IAP Intercept Access Point IETF Internet Engineering Task Force IIF Internal Intercept Function INI Internal Network Interface IP Internet Protocol IRI Intercept Related Information LEA Law Enforcement AgencyLEMF Law Enforcement Monitoring Facility LI Lawful Interception LIID LI Identity LIMD Lawful Intercept Mediation Device MAC Media Access Control MD Mediation Device MF Mediation FunctionMG Media Gateway MGC Media Gateway Controller MIB
