ITU-T Y 1704-2009 Distributed call and connection management (DCM) (Study Group 15)《(预发布)分布式呼叫和连接管理(DCM)》.pdf

1、 International Telecommunication Union ITU-T G.7713/Y.1704TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (11/2009) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Data over Transport Generic aspects Transport network control aspects SERIES Y: GLOBAL INFORMATION INFRASTRUCTURE

2、, INTERNET PROTOCOL ASPECTS AND NEXT-GENERATION NETWORKS Internet protocol aspects Operation, administration and maintenance Distributed call and connection management (DCM) Recommendation ITU-T G.7713/Y.1704 ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS

3、 INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS G.100G.199 GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER-TRANSMISSION SYSTEMS G.200G.299 INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES G.300G.399 GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELE

4、PHONE SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION WITH METALLIC LINES G.400G.449 COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY G.450G.499 TRANSMISSION MEDIA AND OPTICAL SYSTEMS CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL

5、 SECTIONS AND DIGITAL LINE SYSTEM G.900G.999 MULTIMEDIA QUALITY OF SERVICE AND PERFORMANCE GENERIC AND USER-RELATED ASPECTS G.1000G.1999 TRANSMISSION MEDIA CHARACTERISTICS G.6000G.6999 DATA OVER TRANSPORT GENERIC ASPECTS G.7000G.7999 General G.7000G.7099 Transport network control aspects G.7700G.779

6、9PACKET OVER TRANSPORT ASPECTS G.8000G.89ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. Rec. ITU-T G.7713/Y.1704 (11/2009) i Recommendation ITU-T G.7713/Y.1704 Distributed call and connection management (DCM) Summary Recommendation ITU-T G.7713/Y

7、.1704 provides the requirements for the distributed call and connection management for both the user network interface (UNI) and the network node interface (NNI). The requirements in this Recommendation specify the communications across interfaces to effect automated call operations and connection o

8、perations. Items covered in this Recommendation include: attribute specifications; message specifications; signal flows; management of DCM. This Recommendation does not cover any aspects related to routing or automatic discovery. Revisions to this Recommendation include the following changes: Additi

9、on of interlayer signalling requirements following the ITU-T G.8080 interlayer architecture. History Edition Recommendation Approval Study Group 1.0 ITU-T G.7713/Y.1704 2001-12-05 15 1.1 ITU-T G.7713/Y.1704 (2001) Amend. 1 2004-06-13 15 2.0 ITU-T G.7713/Y.1704 2006-05-07 15 3.0 ITU-T G.7713/Y.1704 2

10、009-11-13 15 Keywords ASON, automatically switched optical network, call control, connection management, connection operations, distributed call and connection management, external NNI, internal NNI, signalling, user network interface. ii Rec. ITU-T G.7713/Y.1704 (11/2009) FOREWORD The International

11、 Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications, information and communication technologies (ICTs). The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU-T is responsible for studying technical, operating

12、and tariff questions and issuing Recommendations on them with a view to standardizing telecommunications on a worldwide basis. The World Telecommunication Standardization Assembly (WTSA), which meets every four years, establishes the topics for study by the ITU-T study groups which, in turn, produce

13、 Recommendations on these topics. The approval of ITU-T Recommendations is covered by the procedure laid down in WTSA Resolution 1. In some areas of information technology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with ISO and IEC. NOTE In this R

14、ecommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. Compliance with this Recommendation is voluntary. However, the Recommendation may contain certain mandatory provisions (to ensure e.g., intero

15、perability or applicability) and compliance with the Recommendation is achieved when all of these mandatory provisions are met. The words “shall“ or some other obligatory language such as “must“ and the negative equivalents are used to express requirements. The use of such words does not suggest tha

16、t compliance with the Recommendation is required of any party. INTELLECTUAL PROPERTY RIGHTS ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. ITU takes no position concerning the evidence, v

17、alidity or applicability of claimed Intellectual Property Rights, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, ITU had not received notice of intellectual property, protected by patents, which may be r

18、equired to implement this Recommendation. However, implementers are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database at http:/www.itu.int/ITU-T/ipr/. ITU 2010 All rights reserved. No part of this publication may be repro

19、duced, by any means whatsoever, without the prior written permission of ITU. Rec. ITU-T G.7713/Y.1704 (11/2009) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Terms and definitions . 3 4 Abbreviations 4 5 Conventions 5 6 DCM requirements . 7 6.1 Distributed call and connection management operations p

20、rocedures 8 6.2 Signalling controller resilience . 22 6.3 DCM signal flow Exception handling . 23 6.4 Restoration 35 7 DCM attributes list . 37 7.1 UNI attributes list . 41 7.2 I-NNI attributes list . 44 7.3 E-NNI attributes list . 46 7.4 Interlayer attributes list . 49 8 DCM message sets 51 8.1 Cal

21、l messages . 52 8.2 Connection messages 57 9 Management of the call and connection controller function 62 9.1 Setting up a call and associated connections 66 9.2 Releasing a call and all associated connections . 67 9.3 Modifying a call . 68 Appendix I DCM state diagrams 70 I.1 Call state . 71 I.2 Co

22、nnection state . 78 iv Rec. ITU-T G.7713/Y.1704 (11/2009) Introduction This Recommendation forms part of a suite of Recommendations covering the full functionality of the automatically switched optical network (ASON). Rec. ITU-T G.7713/Y.1704 (11/2009) 1 Recommendation ITU-T G.7713/Y.1704 Distribute

23、d call and connection management (DCM) 1 Scope This Recommendation covers the areas associated with the signalling aspects of the automatically switched optical network (ASON). Specifically, it provides the signalling requirements for the communications of call controller, connection controller and

24、link resource manager. This Recommendation currently specifies support for multiple connections per call, call modification and calls across multiple layers. Areas covered include: attribute specifications; message specifications; signal flows; management of DCM. Other areas of ASON such as routing

25、mechanisms, parameters associated with routing mechanisms, discovery, and naming and addressing are outside the scope of this Recommendation. This Recommendation provides the attribute and message specification, and signalling exchange that allows support for hierarchical, source and step-by-step ro

26、uting. This Recommendation uses the architecture and functional requirements as outlined in ITU-T G.8080 as the basis for the specification. This Recommendation aims to provide a protocol-neutral approach to describe the capability sets of the DCM. Capabilities specified in this Recommendation inclu

27、de support for soft permanent connections and switched connections. In order to allow for interworking between multiple specific protocol implementations, an interworking function may need to be specified. This is currently for further study. Transport of the DCM message sets is via a data communica

28、tion network (DCN). One possible option for a DCN is described in ITU-T G.7712. In order to provide an automated DCM mechanism, a priori knowledge of the network resources is needed. These resources may be manually provisioned or automatically discovered. Automatic discovery of the topology and the

29、resources may be performed as per ITU-T G.7714. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommendation. At the time of publication, the editions indicated were valid. All Recommendat

30、ions and other references are subject to revision; users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations and other references listed below. A list of the currently valid ITU-T Recommendations is regularly publi

31、shed. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T G.707 Recommendation ITU-T G.707/Y.1322 (2003), Network node interface for the synchronous digital hierarchy (SDH). ITU-T G.709 Recommendation ITU-T G.709/Y

32、.1331 (2009), Interfaces for the Optical Transport Network. ITU-T G.783 Recommendation ITU-T G.783 (2006), Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks. 2 Rec. ITU-T G.7713/Y.1704 (11/2009) ITU-T G.784 Recommendation ITU-T G.784 (1999), Synchronous digital hiera

33、rchy (SDH) management. ITU-T G.798 Recommendation ITU-T G.798 (2004), Characteristics of optical transport network hierarchy equipment functional blocks. ITU-T G.800 Recommendation ITU-T G.800 (2007), Unified functional architecture of transport networks. ITU-T G.803 Recommendation ITU-T G.803 (2000

34、), Architecture of transport networks based on the synchronous digital hierarchy (SDH). ITU-T G.805 Recommendation ITU-T G.805 (2000), Generic functional architecture of transport networks. ITU-T G.806 Recommendation ITU-T G.806 (2006), Characteristics of transport equipment Description methodology

35、and generic functionality. ITU-T G.851.1 Recommendation ITU-T G.851.1 (1996), Management of the transport network Application of the RM-ODP framework. ITU-T G.852.2 Recommendation ITU-T G.852.2 (1999), Enterprise viewpoint description of transport network resource model. ITU-T G.853.1 Recommendation

36、 ITU-T G.853.1 (1999), Common elements of the information viewpoint for the management of a transport network. ITU-T G.872 Recommendation ITU-T G.872 (2001), Architecture of optical transport networks. ITU-T G.874 Recommendation ITU-T G.874 (2001), Management aspects of the optical transport network

37、 element. ITU-T G.7712 Recommendation ITU-T G.7712/Y.1703 (2003), Architecture and specification of data communication network. ITU-T G.7714 Recommendation ITU-T G.7714/Y.1705 (2005), Generalized automatic discovery for transport entities. ITU-T G.7718 Recommendation ITU-T G.7718/Y.1709 (2005), Fram

38、ework for ASON management. ITU-T G.8080 Recommendation ITU-T G.8080/Y.1304 (2006), Architecture of the automatically switched optical network (ASON). ITU-T G.8081 Recommendation ITU-T G.8081/Y.1353 (2008), Terms and definitions for Automatically Switched Optical Networks (ASON). ITU-T M.3100 Recomme

39、ndation ITU-T M.3100 (2005), Generic network information model. ITU-T Q.1901 Recommendation ITU-T Q.1901 (2000), Bearer Independent Call Control protocol. ITU-T Q.2931 Recommendation ITU-T Q.2931 (1995), Digital Subscriber Signalling System No. 2 User-Network Interface (UNI) layer 3 specification fo

40、r basic call/connection control: plus amendments. ITU-T Q.2982 Recommendation ITU-T Q.2982 (1999), Broadband integrated services digital network (B-ISDN) Digital Subscriber Signalling System No. 2 (DSS2) Recommendation Q.2931-based separated call control protocol. Rec. ITU-T G.7713/Y.1704 (11/2009)

41、3 3 Terms and definitions The following terms are defined in ITU-T G.805: administrative domain; layer network; link connection; management domain; subnetwork; subnetwork connection. The following term is defined in ITU-T G.806: management information (MI) signal. The following terms are defined in

42、ITU-T G.8081: access group container; agent; component; control domain; call controller; call segment; connection controller; connection admission control; hard rerouting; routing controller; link resource manager; policy; protocol controller; rerouting domain; restoration; routing domain; signallin

43、g controller; soft rerouting; soft permanent connection; switched connection; subnetwork point; subnetwork point pool; transport domain; transport resource identifier. The following term is defined in ITU-T G.7712: data communication network. The following terms are defined in ITU-T G.852.2 and ITU-

44、T G.853.1: connection termination point (examples of connection termination points for technology specific instances may be found in ITU-T G.784 (for SDH) and ITU-T G.874 (for OTN); 4 Rec. ITU-T G.7713/Y.1704 (11/2009) trail termination point (examples of trail termination points for technology spec

45、ific instances may be found in ITU-T G.784 (for SDH) and ITU-T G.874 (for OTN); resource. The following term is defined in ITU-T G.783: TPmode/PortMode. 4 Abbreviations This Recommendation uses the following abbreviations: ACC-n A-end CC at domain n AD Administrative Domain AGC Access Group Containe

46、r AGC-a A-end AGC AGC-z Z-end AGC ARC Alarm Reporting Control ASC-n A-end Signalling Controller in domain n ASN-n A-end SN in domain n ASON Automatically Switched Optical Network CAC Call Admission Control CallC Call Controller CC Connection Controller CC-a A-end Connection Controller CC-z Z-end Con

47、nection Controller CCC Calling/Called Party Call Controller CCC-a A-end CCC CCC-z Z-end CCC CI Characteristic Information CO-PS Connection Oriented Packet Switching CoS Class of Service CP Connection Point CPS Connection Point Status CR-LDP Constraint-based Routing Label Distribution Protocol CTP Co

48、nnection Termination Point DCM Distributed Call and Connection Management DCN Data Communication Network E-NNI External NNI GoS Grade of Service I-NNI Internal NNI Rec. ITU-T G.7713/Y.1704 (11/2009) 5 LC Link Connection LRM Link Resource Manager MI Management Information MP Management Plane NCC Netw

49、ork Call Controller NCC-n NCC in domain n NE Network Element NNI Network Node Interface PC Protocol Controller PNNI Private NNI RC Routing Controller RSVP-TE Resource Reservation Protocol-Traffic Engineering SC Switched Connection SC-a A-end user Signalling Controller SC-z Z-end user Signalling Controller SN SubNetwork SNC SubNetwork Connection SNCr SubNetwork Controller SNP Su