1、ETSI TS I O1 909-23 1.1.1 (2002-12) Technical Specificafion Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 23: Internet Protocol Access Terminal - Line Control Signalling (IPAT-LCS) 2 ETSI TS 101 909-23 VI .I .I (2002-12) Reference
2、 DTSIAT-020020-23 Keywords broadband, IPCable, multimedia, gateway, V5i n te iface ETSI 650 Route des Lucioles F-O6921 Sophia Antipolis Cedex - FRANCE Tel.: +33 4 92 94 42 O0 Fax: +33 4 93 65 47 16 Siret No 348 623 562 00017 - NAF 742 C Association but non lucratif enregistre la Sous-prfecture de Gr
3、asse (06) No 7803/88 Important notice Individual copies of the present document can be downloaded from: http:lwmv.etsi .arq The present document may be made available in more than one electronic version or in print. In any case of existing or perceived difference in contents between such versions, t
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6、ritten permission. The copyright and the foregoing restriction extend to reproduction in all media. O European Telecommunications Standards Institute 2002. All rights reserved. DECTTM, PLUGTESTSTMand UMTSTMare Trade Marks of ETSI registered for the benefit of its Members. TIPHONTM and the TIPHON log
7、o are Trade Marks currently being registered by ETSI 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. ETSI 3 ETSI TS 101 909-23 VI . 1 . 1 (2002-12) Contents Intellectual Property Rights 6 Foreword . 6 I
8、ntroduction 6 1 2 3 3.1 3.2 4 4.1 4.2 4.3 5 5.1 5.2 5.3 5.4 5.5 6 6.1 6.2 6.2.1 6.2.2 6.3 6.4 6.5 6.6 6.6.1 6.6.2 6.6.3 6.6.4 Scope 8 References 8 Definitions and abbreviations . 10 Definitions 10 Abbreviations 10 System architecture 12 Line control signalling system architecture 12 IPAT/LE interwor
9、king: the V5.2 interface . 13 Migration to full VoIP 13 System components 14 Local Exchange 14 IP Access Terminal 15 Cable Modem Temnation System 15 Embedded MTA . 15 Operational support systems . 16 System interfaces 16 6.6.4.1 6.6.4.1.1 6.6.4.1.2 6.6.4.1.3 6.6.4.1.4 6.6.4.1.5 6.6.4.1.6 6.6.4.1.7 6
10、.6.4.2 6.7 6.8 6.8.1 6.8.2 6.8.2.1 6.8.2.2 6.8.2.3 6.8.2.4 6.8.2.5 6.8.3 6.8.3.1 6.9 Physical and data link layer interfaces 17 Call signalling interfaces 17 19 19 Media streams 19 21 22 23 24 26 . 26 Dynamic Quality of Service functional requirements . 27 Gate establishment . 27 Packet classificati
11、on and filtering 27 Setting the DiffServ Code Point (DSCP) . 27 CMTS - IPATKMTS proxy gate coordination with gate coordination option . 27 Gate Closure without Gate Coordination options 28 Gate Closure with Gate Coordination options . 28 Miscellaneous 28 IPAT implementation requirements 29 Audio ser
12、vers 30 Security 30 Threats overview 30 Functional categories 31 MTA device and service provisioning 31 Dynamic Quality of Service 31 Call signalling . 31 CODEC functionality and media stream mapping 31 V 5.2 interconnectivity 32 LCS security architecture 32 LCS security interfaces summary . 35 Lawf
13、ul Interception 35 The IPAT and the LE Event messages interfaces 21 Layer-two vs . layer-four MTA QoS signallin LCS system Dynamic Quality of Service i ETSI 4 ETSI TS 101 909-23 VI . 1 . 1 (2002-12) 6.10 Caller Identification provisioning and Detailed Call Record . 36 Annex A (informative): Protocol
14、 mapping framework between V5 interface and NCS TS 101 909-4 annexes A and B for analogue telephone access . 37 A . 1 PSTN signalling protocol specification and layer 3 multiplexing 37 A . 1.1 General . 37 A.1.2 Overview 37 A . 1.3 Separation of responsibilities . 38 A . 1.4 National specific PSTN s
15、ignal information elements . 38 A.2 PSTN protocol entity definition . 39 A.2.1 Definition of PSTN path states and explanation . 39 A.2.1.1 Path states in the AN (AN(PSTN) . 39 A.2.1.2 Path states in the LE (LE(PSTN) . 39 A.2.2 Definition of PSTN protocol primitives, messages and timers 40 A . 3 A.3.
16、1 A.3.2 A.3.3 A.3.4 A.3.5 A.3.6 A.3.7 A.3.8 A.3.9 PSTN protocol message definition and content . 42 ESTABLISH message 42 ESTABLISH ACK message . 43 SIGNAL message . 43 SIGNAL ACK message 43 STATUS message 44 STATUS ENQUIRY message 44 DISCONNECT message 44 DISCONNECT COMPLET 45 PROTOCOL PARAMETER 45
17、A.4 General message format and information element coding . 45 A.4.1 A.4.2 A.4.3 A.4.4 A.4.5 A.4.6 A.4.6.1 A.4.6.2 A.4.6.3 A.4.6.4 A.4.6.5 A.4.7 A.4.7.1 A.4.7.2 A.4.7.3 A.4.7.4 A.4.7.5 A.4.7.6 A.4.7.7 A.4.7.8 A.4.7.9 . . Overview 46 Protocol discriminator 46 Layer 3 address . 47 Message type 47 Codi
18、ng of other information elements 47 Single octet information elements 48 Pulse-notification 48 Line-information . 48 State 49 Autonomous-signalling-sequence . 49 Sequence-response 50 Information elements with variable length format . 51 Sequence-number . 51 52 52 54 54 55 Enable-autonomous-acknowled
19、ge 56 57 . Disable-autonomous-acknowledg 57 A.4.7.10 Resource-unavailable 58 A.5 A.5.1 A.5.2 Caller Identification (CLID) . 58 Caller Identification origination function . 58 Caller Identification delivery function . 59 Annex B (informative): B . 1 B . 1.1 B . 1.2 Billing accuracy 60 Billing accurac
20、y 60 Normal call disconnection 60 Abnormal call disconnection 60 Annex C (informative): C . 1 Call flow examples . 61 Introduction 61 ETSI 5 ETSI TS 101 909-23 VI .I .I (2002-12) C.2 Call origination. . .62 C.2.1 Origination call flow . .62 C.2.2 Origination call flow signals description 63 C.3 Call
21、 termination . .64 C.3.1 Termination call Bo . 64 C.3.2 Call termination cal 65 C.4 Call Disconnection .66 C.4.1 Disconnection - call flow . 66 C.4.2 Disconnection - call flow description . 67 Annex D (informative): Provisioning of parameters for with and without gate coordination 68 D. 1 Dynamic Qu
22、ality of Service interface usage . .68 D. 1.1 DQoS gate control messaging 68 D. 1.2 Required gate control messages . 68 D. 1.3 Optional gate control messages 69 D.1.4 Gate control object usage . 69 D. 1.5 DQoS gate coordination messaging . 72 History . .74 . Annex E (informative): Bibliography . 73
23、ETSI 6 ETSI TS 101 909-23 VI .I .I (2002-12) Intellectual Property Rights IPRs essential or potentially essential to the present document may have been declared to ETSI. The information pertaining to these essential IPRs, if any, is publicly available for ETSI members and non-members, and can be fou
24、nd in ETSI SR 000 3 14: “Intellectual Property Rights (7PRs); Essential, orpotentially Essential, IPRs notlJied to ETSI in respect ofETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (5). All published ETSI deliverables shall include i
25、nformation which directs the reader to the above source of information. Foreword This Technical Specification (TS) has been produced by ETSI Technical Committee Access and Terminals (AT). The present document is part 23 of a multi-part deliverable covering Digital Broadband Cable Access to the Publi
26、c Telecomunications Network; IP Multimedia Time Critical Services. Full details of the entire series can be found in part 1 i. The present document describes the Internet Protocols Access Terminal (IPAT) architecture and protocols for an Internet Protocol (1P)-based Cable Telephony access service, r
27、eferred to as the Line Control Signalling (LCS) architecture. NOTE 1 : The choice of a multi-part format for the present document is to facilitate maintenance and future enhancements. NOTE 2: The term MUST or MUST NOT is used as a convention in the present document to denote an absolutely mandatory
28、aspect of the specification. I n t rod uct ion The cable industry in Europe and across other Global regions has already deployed broadband cable television Hybrid FibreKOaxial (HFC) data networks running a standard Cable Modem Protocol. The Cable Industry is in the rapid stages of deploying IP Voice
29、 and other time critical multimedia services over these broadband cable television networks. The Cable Industry has recognized the urgent need to develop ETSI Technical Specifications aimed at developing interoperable interface specifications and mechanisms for the delivery of end to end advanced re
30、al time IP multimedia time critical services over bi-directional broadband cable networks. IPCablecom is a set of protocols and associated element functional requirements developed to deliver Quality of Service (QoS) enhanced secure IP multimedia time critical communications services using packetize
31、d data transmission technology to a consumers home over the broadband cable television Hybrid FibreKOaxial (HFC) data network running the Cable Modem protocol. IPCablecom utilizes a network superstructure that overlays the two-way data-ready cable television network. While the initial service offeri
32、ngs in the IPCablecom product line are anticipated to be Packet Voice, the long-term project vision encompasses packet video and a large family of other packet-based services. The Cable Industry is a global market and therefore the ETSI standards are developed to align with standards either already
33、developed or under development in other regions. The ETSI Specifications are consistent with the CableLabs/PacketCable set of specifications as published by the SCTE. An agreement has been established between ETSI and SCTE in the US to ensure, where appropriate, that the release of Packetcable and I
34、PCablecom set of specifications are aligned and to avoid unnecessary duplication. The set of IPCablecom ETSI specifications also refers to ITU-SG9 draft and published recommendations relating to IP Cable Communication. The whole set of multi-part ETSI deliverables to which the present document belon
35、gs spec a Cable Communication Service for the delivery of IP Multimedia Time Critical Services over a HFC Broadband Cable Network to the consumers home cable telecom terminal. “IPCablecom“ also refers to the ETSI TC AT working group program that shall defie and develop these ETSI deliverables. ETSI
36、7 ETSI TS 101 909-23 VI .I .I (2002-12) Certain matters that are included in the present document as informative may be specifically required under regional EU Directives, as transposed into national laws in some member states. Outside the EU region national law may also spec as normative that certa
37、in additional capabilities must be supported. ETSI 8 ETSI TS 101 909-23 VI .I .I (2002-12) 1 Scope The present set of documents specifies IPCablecom, a set of protocols and associated element functional requirements. These have been developed to deliver Quality of Service (QoS), enhanced secure IP m
38、ultimedia time critical communication services, using packetized data transmission technology to a consumers home over a cable television Hybrid FibreKOaxial (HFC) data network. To facilitate maintenance and future enhancements to support other real-time multimedia services the TS 101 909 document s
39、eries consist of multi-parts as detailed in TS 101 909-1 i. The present document is part 23 : Internet Protocol Access Terminal-Line Control Signalling (IPAT-LCS) providing a technical description of this architecture, and where appropriate, identiSl the portions of the IPCablecom specifications tha
40、t apply to this architecture and their use. The present document contains a description of modifications to the NCS architecture to support a V5.2 signalling interface to a local exchange, rather than the full NCS architecture. This is a “delta“ document, describing areas where the LCS architecture
41、differs from the NCS. In the present document, protocol extension to NCS are not included as they are in annexes A and B of TS 101 909-4 4. NOTE 1: To avoid confusion between the V5.2 reference Access Network (AN) and the IPCablecom Access Node (AN), the present document uses the DOCSIS nomenclature
42、 for the Cable Modem Termination System (CMTS) to designate the interface between the HFC cable plant and the IP Network. NOTE 2: To be clear throughout the present document, the term “CWMTA“ will be used to denote an E-MTA. While the initial service offerings in the IPCablecom product line are anti
43、cipated to be Packet Voice and Packet Video, the long-term project vision encompasses a large family of packet-based services. This may require in the future, not only careful maintenance control, but also an extension of the present set of documents. The present document assumes familiarity with th
44、e IPCablecom architecture, specifically with DQoS, Security and call signalling. 2 Re fe re nces The following documents contain provisions which, through reference in this text, constitute provisions of the present document. References are either specific (identified by date of publication andor ed
45、ition number or version number) or non-specific. For a specific reference, subsequent revisions do not apply. For a non-specific reference, the latest version applies. Referenced documents which are not found to be publicly available in the expected location might be found at htlu:/docbox.etsi.or:ee
46、rence. il ETSI TS 101 909-1: “Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 1 : General“. ETSI TS 101 909-2: “Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 2: A
47、rchitectural framework for the delivery of time critical services over cable Television networks using cable modems“. ETSI TS 101 909-3: “Access and Terminals (AT); Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 3 : Audio Codec Req
48、uirements for the Provision of Bi-Directional Audio Service over Cable Television Networks using Cable Modems“. 21 31 ETSI 9 ETSI TS 101 909-23 VI .I .I (2002-12) 91 ETSI TS 101 909-4: “Access and Terminals (AT); Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia
49、Time Critical Services; Part 4: Network Call Signalling Protocol“. ETSI TS 101 909-5: “Access and Terminals (AT); Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 5: Dynamic Quality of Service for the Provision of Real Time Services over Cable Television Networks using Cable Modems“. ETSI TS 101 909-6: “Access and Terminals (AT); Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services; Part 6: Media Terminal Adapter (MTA) device provisioning“
