1、 ETSI TS 103 161-4 V1.1.1 (2011-10) Access, Terminals, Transmission and Multiplexing (ATTM); Integrated Broadband Cable and Television Networks; IPCablecom 1.5; Part 4: Network Call Signalling Protocol Technical Specification ETSI ETSI TS 103 161-4 V1.1.1 (2011-10)2Reference DTS/ATTM-003011-4 Keywor
2、ds access, broadband, cable, multimedia, PSTN 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 Important notice I
3、ndividual copies of the present document can be downloaded from: http:/www.etsi.org 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, the reference version is the Portable Doc
4、ument Format (PDF). In case of dispute, the reference shall be the printing on ETSI printers of the PDF version kept on a specific network drive within ETSI Secretariat. Users of the present document should be aware that the document may be subject to revision or change of status. Information on the
5、 current status of this and other ETSI documents is available at http:/portal.etsi.org/tb/status/status.asp If you find errors in the present document, please send your comment to one of the following services: http:/portal.etsi.org/chaircor/ETSI_support.asp Copyright Notification No part may be rep
6、roduced except as authorized by written permission. The copyright and the foregoing restriction extend to reproduction in all media. European Telecommunications Standards Institute 2011. All rights reserved. DECTTM, PLUGTESTSTM, UMTSTMand the ETSI logo are Trade Marks of ETSI registered for the bene
7、fit of its Members. 3GPPTM and LTE are Trade Marks of ETSI registered for the benefit of its Members and of the 3GPP Organizational Partners. GSM and the GSM logo are Trade Marks registered and owned by the GSM Association. ETSI ETSI TS 103 161-4 V1.1.1 (2011-10)3Contents Intellectual Property Right
8、s 6g3Foreword . 6g31 Scope 8g32 References 8g32.1 Normative references . 8g32.2 Informative references 9g33 Definitions and abbreviations . 10g33.1 Definitions 10g33.2 Abbreviations . 11g34 Void 12g35 Technical Overview . 12g36 Introduction 14g36.1 Relation With H.323 Standards 14g36.2 Relation With
9、 IETF Standards . 15g36.3 Relation to RFC 3435 and ABNF Grammar 16g37 Media Gateway Control Interface (MGCI) 16g37.1 Model and Naming Conventions 16g37.1.1 Endpoint Names 16g37.1.1.1 Embedded Client Endpoint Names . 17g37.1.1.1.1 Analog Access Line Endpoints 18g37.1.1.1.2 Video Endpoints 18g37.1.2 C
10、all Names 18g37.1.3 Connection Names 18g37.1.4 Names of Call Agents and Other Entities . 19g37.1.5 Digit Maps 19g37.1.6 Events and Signals 21g37.2 SDP Use . 23g37.3 Gateway Control Functions 23g37.3.1 NotificationRequest 25g37.3.2 Notifications . 30g37.3.3 CreateConnection . 31g37.3.4 ModifyConnecti
11、on 36g37.3.5 DeleteConnection (From the Call Agent) . 38g37.3.6 DeleteConnection (From the Embedded Client) . 39g37.3.7 DeleteConnection (Multiple Connections From the Call Agent) 40g37.3.8 Auditing 40g37.3.8.1 AuditEndPoint . 41g37.3.8.2 AuditConnection . 43g37.3.9 Restart in Progress 44g37.4 State
12、s, Failover and Race Conditions . 45g37.4.1 Recaps and Highlights 45g37.4.2 Retransmission, and Detection of Lost Associations 46g37.4.3 Race Conditions 49g37.4.3.1 Quarantine list . 49g37.4.3.2 Explicit Detection . 53g37.4.3.3 Transactional Semantics 54g37.4.3.4 Ordering of Commands, and Treatment
13、of Disorder . 54g37.4.3.5 Fighting the Restart Avalanche . 55g37.4.3.6 Disconnected Endpoints 56g37.4.3.7 Call Agent Handling of Disconnected Endpoints . 58g37.5 Return Codes and Error Codes . 59g37.6 Reason Codes . 60g3ETSI ETSI TS 103 161-4 V1.1.1 (2011-10)47.7 Use of Local Connection Options and
14、Connection Descriptors . 61g37.7.1 RFC 2833 Negotiation 63g37.7.2 Selecting Codec Packetization Interval for T.38. 63g37.7.3 Remote IP and Port Negotiation . 64g37.7.4 LCO Use with FXR Package 64g37.7.5 LCO with FXR and VBD Being Used by CMS at Same Time 65g37.7.6 LCO format for V.152 and RFC 2198 R
15、edundancy use . 65g38 Media Gateway Control Protocol . 65g38.1 General Description 66g38.2 Command Header . 66g38.2.1 Command Line . 66g38.2.1.1 Requested Verb Coding 67g38.2.1.2 Transaction Identifiers 67g38.2.1.3 Endpoint, Call Agent and NotifiedEntity Name Coding . 68g38.2.1.4 Protocol Version Co
16、ding . 68g38.2.2 Parameter Lines 68g38.2.2.1 Response Acknowledgement 71g38.2.2.2 RequestIdentifier . 71g38.2.2.3 Local Connection Options . 71g38.2.2.4 Capabilities 73g38.2.2.5 Connection Parameters 74g38.2.2.6 Reason Codes 74g38.2.2.7 Connection Mode 74g38.2.2.8 Event/Signal Name Coding . 75g38.2.
17、2.9 RequestedEvents . 75g38.2.2.10 SignalRequests 76g38.2.2.11 ObservedEvents 77g38.2.2.12 RequestedInfo . 77g38.2.2.13 QuarantineHandling 78g38.2.2.14 DetectEvents . 78g38.2.2.15 EventStates 78g38.2.2.16 ResourceID 78g38.2.2.17 RestartMethod . 78g38.2.2.18 VersionSupported 78g38.2.2.19 MaxMGCPDatag
18、ram 79g38.3 Response Header Formats 79g38.3.1 CreateConnection . 81g38.3.2 ModifyConnection 81g38.3.3 DeleteConnection . 82g38.3.4 NotificationRequest 82g38.3.5 Notify 82g38.3.6 AuditEndpoint . 82g38.3.7 AuditConnection . 82g38.3.8 RestartInProgress 83g38.4 Session Description Encoding 83g38.4.1 Use
19、 of SDP . 83g38.4.2 SDP Parameters Common to both Audio (m=audio media line) and Image (m=image media line) Service Use . 84g38.4.2.1 Protocol Version (v=) 84g38.4.2.2 Origin (o=) 84g38.4.2.3 Session Name (s=) 84g38.4.2.4 Session and Media Information (i=) 85g38.4.2.5 URI (u=) 85g38.4.2.6 E-Mail Add
20、ress and Phone Number (e=, p=) 85g38.4.2.7 Connection Data (c=) 85g38.4.2.8 Bandwidth (b=) . 85g38.4.2.9 Time, Repeat Times and Time Zones (t=, r=, z=) . 86g38.4.2.10 Attributes (a=) . 86g38.4.3 SDP Audio Service Use 87g38.4.3.1 Encryption Keys:. 87g38.4.3.2 Attributes (a=) . 88g3ETSI ETSI TS 103 16
21、1-4 V1.1.1 (2011-10)58.4.3.3 Media Announcements (m=) . 90g38.4.4 SDP Image Service Use for T.38 90g38.4.4.1 Encryption Keys: . 91g38.4.4.2 Attributes (a=). 91g38.4.4.3 Media Announcements (m=) . 93g38.5 Transmission Over UDP 93g38.5.1 Reliable Message Delivery . 93g38.5.2 Retransmission Strategy .
22、94g38.5.3 Maximum Datagram Size, Fragmentation and Reassembly . 94g38.6 Piggy-Backing 95g38.7 Transaction Identifiers And Three Ways Handshake . 95g38.8 Provisional Responses 96g39 Security. 97g3Annex A (normative): Event Packages . 98g3A.1 Analogue Access Lines 98g3A.2 Line Package 99g3A.3 FAX Pack
23、age 103g3A.4 VoIP Metrics Package 103g3A.5 Vbd and GPMD packages 104g3Annex B (normative): Connection Mode . 105g3Annex C (normative): Dynamic Quality-of-Service 108g3C.1 Introduction 108g3C.2 NCS/D-QoS State Machine 109g3Annex D (informative): Example Command Encodings . 115g3D.1 NotificationReques
24、t 115g3D.2 Notify . 115g3D.3 CreateConnection . 116g3D.4 ModifyConnection . 117g3D.5 DeleteConnection (from the Call Agent) . 118g3D.6 DeleteConnection (from the Embedded Client) . 118g3D.7 DeleteConnection (Multiple Connections From the Call Agent) . 118g3D.8 AuditEndpoint 119g3D.9 AuditConnection
25、120g3D.10 RestartInProgress . 120g3Annex E (informative): Example Call Flow . 122g3Annex F (informative): Compatibility Information 128g3F.1 MGCP Compatibility . 128g3Annex G (normative): ABNF Grammar for NCS . 129g3Annex H (informative): Bibliography . 137g3History 138g3ETSI ETSI TS 103 161-4 V1.1.
26、1 (2011-10)6Intellectual 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 found in ETSI SR 000 314: “Intellect
27、ual Property Rights (IPRs); Essential, or potentially Essential, IPRs notified to ETSI in respect of ETSI standards“, which is available from the ETSI Secretariat. Latest updates are available on the ETSI Web server (http:/ipr.etsi.org). Pursuant to the ETSI IPR Policy, no investigation, including I
28、PR 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 ETSI Web server) which are, or may be, or may become, essential to the present document. Foreword This Technical Specification (TS) has been
29、 produced by ETSI Technical Committee Access, Terminals, Transmission and Multiplexing (ATTM). The present document is part 4 of a multi-part IPCablecom 1.5 deliverable covering the Digital Broadband Cable Access to the Public Telecommunications Network; IP Multimedia Time Critical Services, as iden
30、tified below: Part 1: “Overview“; Part 2: “Architectural framework for the delivery of time critical services over Cable Television Networks using Cable Modems“; Part 3: “Audio Codec Requirements for the Provision of Bi-Directional Audio Service over Cable Television Networks using Cable Modems“; Pa
31、rt 4: “Network Call Signalling Protocol“; Part 5: “Dynamic Quality of Service for the Provision of Real Time Services over Cable Television Networks using Cable Modems“; Part 6: “Event Message Specification“; Part 7: “Media Terminal Adapter (MTA Management Information Base (MIB)“; Part 8: “Network C
32、all Signalling (NCS) MIB Requirements“; Part 9: “Security“; Part 10: “Management Information Base (MIB) Framework“; Part 11: “Media terminal adapter (MTA) device provisioning“; Part 12: “Management Event Mechanism“; Part 13: “Trunking Gateway Control Protocol - MGCP option“; Part 14: “Embedded MTA A
33、nalog Interface and Powering Specification“ Part 15: “Analog Trunking for PBX Specification“; Part 16: “Signalling for Call Management Server“; Part 17: “CMS Subscriber Provisioning Specification“; Part 18: “Media Terminal Adapter Extension MIB“; Part 19: “IPCablecom Audio Server Protocol Specificat
34、ion - MGCP option“; Part 20: “Management Event MIB Specification“; ETSI ETSI TS 103 161-4 V1.1.1 (2011-10)7Part 21: “Signalling Extension MIB Specification“. NOTE 1: Additional parts may be proposed and will be added to the list in future versions. NOTE 2: The choice of a multi-part format for this
35、deliverable is to facilitate maintenance and future enhancements. ETSI ETSI TS 103 161-4 V1.1.1 (2011-10)81 Scope The present document specifies a profile of the Media Gateway Controller Protocol (MGCP) for IPCablecom 1.5 embedded clients. MGCP is a call signalling protocol for use in a centralized
36、call control architecture, and assumes relatively simple client devices. The call signalling protocol is one layer of the overall IPCablecom 1.5 suite of documents and relies upon companion protocol documents to provide complete end-to-end IPCablecom functionality. The present document describes an
37、IPCablecom profile of an application programming interface (MGCI), and a corresponding protocol (MGCP) for controlling Voice-over-IP (VoIP) embedded clients external call control elements. The profile is referred to as the Network Call Signalling (NCS) Protocol. 2 References References are either sp
38、ecific (identified by date of publication and/or edition number or version number) or non-specific. For specific references, only the cited version applies. For non-specific references, the latest version of the reference document (including any amendments) applies. Referenced documents which are no
39、t 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 The following referenced doc
40、uments are necessary for the application of the present document. 1 IETF RFC 3435 (January 2003): “Media Gateway Control Protocol (MGCP)“ Version 1.0. 2 IETF RFC 1890 (January 1996): “RTP Profile for Audio and Video Conferences with Minimal Control“. 3 IETF RFC 2327 (April 1998): “Session Descriptio
41、n Protocol (SDP)“. 4 TCP/IP Illustrated, Volume 1: “The Protocols, Stevens, W. Richard, Addison-Wesley“, 1994. 5 ETSI TS 103 161-3: “Access, Terminals, Transmission and Multiplexing (ATTM); Integrated Broadband Cable and Television Networks; IPCablecom 1.5; Part 3: Audio Codec Requirements for the P
42、rovision of Bi-Directional Audio Service over Cable Television Networks using Cable Modems“. 6 ETSI TS 103 161-5: “Access, Terminals, Transmission and Multiplexing (ATTM); Integrated Broadband Cable and Television Networks; IPCablecom 1.5 Part 5: Dynamic Quality of Service for the Provision of Real
43、Time Services over Cable Television Networks using Cable Modems“. 7 ETSI TS 103 161-9: “Access, Terminals, Transmission and Multiplexing (ATTM); Integrated Broadband Cable and Television Networks; IPCablecom 1.5 Part 9: Security“. 8 IETF RFC 2231 (November 1997): “MIME Parameter Value and Encoded Wo
44、rd Extensions: Character Sets, Languages, and Continuations“. 9 Telcordia GR-506: “LSSGR: Signaling for Analog Interfaces,“ December 1996. 10 ITU-T Recommendation T.38: “Procedures for real-time Group 3 facsimile communication over IP networks“, March 2002. 11 IETF RFC 2198 (September 1997): “RTP Pa
45、yload for Redundant Audio Data“. 12 ITU-T Recommendation V.152: “Procedures for supporting voice-band data over IP networks“, January 2005. ETSI ETSI TS 103 161-4 V1.1.1 (2011-10)913 IETF RFC 5347 (October 2008): “Media Gateway Control Protocol Fax Package“. 14 IETF RFC 3660: “Basic Media Gateway Co
46、ntrol Protocol (MGCP) Packages“. 15 IETF draft-auerbach-mgcp-rtcpxr-00: “Media Gateway Control Protocol VoIP RTCP-XR Metrics Package“. NOTE: Available at http:/docbox.etsi.org/Reference/IETF/Drafts/draft-auerbach-mgcp-rtcpxr-00.PDF. 16 IETF draft-stone-mgcp-vbd-00: “Media Gateway Control Protocol Vo
47、iceband Data Package and General Purpose Media Descriptor Parameter Package“. NOTE: Available at http:/docbox.etsi.org/Reference/IETF/Drafts/draft-stone-mgcp-vbd-00.PDF. 2.2 Informative references The following referenced documents are not necessary for the application of the present document but th
48、ey assist the user with regard to a particular subject area. i.1 IETF RFC 1889: “RTP: A Transport Protocol for Real-Time Applications“, January 1996. i.2 IETF RFC 2974: “SAP - Session Announcement Protocol“, October 2000. i.3 IETF RFC 2326: “Real-time Streaming Protocol (RTSP)“, April 1998. i.4 RTP
49、Parameters. NOTE: Available at http:/www.Iana.org/assignments/rtp-parameters/. i.5 Telecordia: Notes on the Networks, SR-2275. NOTE: Available at http:/telecom- i.6 IETF RFC 2821/STD0010, J. Klensin, Editor: “Simple Mail Transfer Protocol“, April 2001. i.7 IETF RFC 1122/STD0003: “Requirements for Internet Hosts - Communication Layers“, October 1989. i.8 IETF STD0013: “Domain Names - Implementations and Specifications“, November 1987. i.9 IETF RFC 2234: “Augmented BNF for Syntax Spe
