1、 International Telecommunication Union ITU-T G.7713/Y.1704TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU (05/2006) 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) ITU-T Recommendation 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 CHARACTERISTICS G.600G.699 DIGITAL TERMINAL EQUIPMENTS G.700G.799 DIGITAL NETWORKS G.800G.899 DIGITAL SECTIONS AND DIGITA
5、L LINE SYSTEM G.900G.999 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.7799 ETHERNET OVER TRANSPORT ASPEC
6、TS G.8000G.8999 ACCESS NETWORKS G.9000G.9999 For further details, please refer to the list of ITU-T Recommendations. ITU-T Rec. G.7713/Y.1704 (05/2006) i ITU-T Recommendation G.7713/Y.1704 Distributed Call and Connection Management (DCM) Summary This Recommendation provides the requirements for the
7、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 operations. Items covered in this Recomme
8、ndation include: attribute specifications; message specifications; signal flows; DCM state diagrams; and management of DCM. This Recommendation does not cover any aspects related to routing or automatic discovery. Revisions to this Recommendation include the following changes: Aligning with revised
9、ITU-T Rec. G.8080/Y.1304 (2006), Architecture of the automatically switched optical network; Merging Amendment 1 of ITU-T Rec. G.7713/Y.1704 into the main text; Adopting requirements for resilience and restoration (rerouting). Source ITU-T Recommendation G.7713/Y.1704 was approved on 7 May 2006 by I
10、TU-T Study Group 15 (2005-2008) under the ITU-T Recommendation A.8 procedure. Keywords ASON, automatically switched optical network, automatic switched transport network, call control, connection management, connection operations, distributed call and connection management, external NNI, internal NN
11、I, signalling, user network interface. ii ITU-T Rec. G.7713/Y.1704 (05/2006) FOREWORD The International Telecommunication Union (ITU) is the United Nations specialized agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of ITU. ITU
12、-T is responsible for studying technical, operating 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 stu
13、dy by the ITU-T study groups which, in turn, produce 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
14、collaborative basis with ISO and IEC. NOTE In this Recommendation, 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
15、certain mandatory provisions (to ensure e.g. interoperability 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 requi
16、rements. The use of such words does not suggest that 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 Righ
17、t. ITU takes no position concerning the evidence, validity 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 intellec
18、tual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. ITU 2006 All rights reserved. No part of this publi
19、cation may be reproduced, by any means whatsoever, without the prior written permission of ITU. ITU-T Rec. G.7713/Y.1704 (05/2006) iii CONTENTS Page 1 Scope 1 2 References. 1 3 Terms and definitions . 3 4 Abbreviations 4 5 Conventions 6 6 DCM requirements . 7 6.1 Distributed call and connection mana
20、gement operations procedures 8 6.2 Signalling controller resilience. 16 6.3 DCM signal flow Exception handling. 17 6.4 Restoration 28 7 DCM attributes list . 31 7.1 UNI attributes list . 33 7.2 I-NNI attributes list. 36 7.3 E-NNI attributes list . 38 8 DCM message sets 39 8.1 UNI messages. 41 8.2 I-
21、NNI messages 44 8.3 E-NNI messages . 48 9 DCM state diagrams . 51 9.1 Call state . 53 9.2 Connection state . 61 10 Management of the call and connection controller function 68 10.1 Setting up a connection 72 10.2 Releasing a Connection 73 iv ITU-T Rec. G.7713/Y.1704 (05/2006) Introduction This Recom
22、mendation forms part of a suite of Recommendations covering the full functionality of the automatically switched optical network (ASON). ITU-T Rec. G.7713/Y.1704 (05/2006) 1 ITU-T Recommendation G.7713/Y.1704 Distributed Call and Connection Management (DCM) 1 Scope This Recommendation covers the are
23、as associated with the signalling aspects of automatically switched optical network (ASON). Specifically, it provides the signalling requirements for the communications of call controller, connection controller and link resource manager. This Recommendation currently specifies operations for call se
24、tup and release based on a call having a single connection per call. Calls supporting multiple connections are for further study. Capability to modify calls is also for further study. Areas covered include: attribute specifications; message specifications; signal flows; DCM state diagrams; and manag
25、ement of DCM. Other areas of ASON such as routing 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 su
26、pport for hierarchical, source and step-by-step routing. This Recommendation uses the architecture and functional requirements as outlined in ITU-T Rec. G.8080/Y.1304 as the basis for the specification. This Recommendation aims to provide a protocol-neutral approach to describe the capability sets o
27、f the DCM. Capabilities specified in this Recommendation include 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 st
28、udy. Transport of the DCM message sets is via a data communication network (DCN). One possible option for a DCN is described in ITU-T Rec. G.7712/Y.1703. In order to provide an automated DCM mechanism, a priori knowledge of the network resources is needed. These resources may be manually provisioned
29、 or automatically discovered. Automatic discovery of the topology and the resources may be performed as per ITU-T Rec. G.7714/Y.1705. 2 References The following ITU-T Recommendations and other references contain provisions which, through reference in this text, constitute provisions of this Recommen
30、dation. At the time of publication, the editions indicated were valid. All Recommendations 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 reference
31、s listed below. A list of the currently valid ITU-T Recommendations is regularly published. The reference to a document within this Recommendation does not give it, as a stand-alone document, the status of a Recommendation. ITU-T Recommendation G.707/Y.1322 (2003), Network node interface for the syn
32、chronous digital hierarchy (SDH). ITU-T Recommendation G.709/Y.1331 (2003), Interfaces for the Optical Transport Network. 2 ITU-T Rec. G.7713/Y.1704 (05/2006) ITU-T Recommendation G.783 (2006), Characteristics of synchronous digital hierarchy (SDH) equipment functional blocks. ITU-T Recommendation G
33、.784 (1999), Synchronous digital hierarchy (SDH) management. ITU-T Recommendation G.798 (2004), Characteristics of optical transport network hierarchy equipment functional blocks. ITU-T Recommendation G.803 (2000), Architecture of transport networks based on the synchronous digital hierarchy (SDH).
34、ITU-T Recommendation G.805 (2000), Generic functional architecture of transport networks. ITU-T Recommendation G.806 (2006), Characteristics of transport equipment Description methodology and generic functionality. ITU-T Recommendation G.851.1 (1996), Management of the transport network Application
35、of the RM-ODP framework. ITU-T Recommendation G.852.2 (1999), Enterprise viewpoint description of transport network resource model. ITU-T Recommendation G.853.1 (1999), Common elements of the information viewpoint for the management of a transport network. ITU-T Recommendation G.872 (2001), Architec
36、ture of optical transport networks. ITU-T Recommendation G.874 (2001), Management aspects of the optical transport network element. ITU-T Recommendation G.875 (Draft), Optical transport network (OTN) management information model for the network element view. ITU-T Recommendation G.7712/Y.1703 (2003)
37、, Architecture and specification of data communication network. ITU-T Recommendation G.7714/Y.1705 (2005), Generalized automatic discovery for transport entitles. ITU-T Recommendation G.8080/Y.1304 (2006), Architecture of the automatically switched optical network (ASON). ITU-T Recommendation G.8081
38、/Y.1353 (2004), Terms and definitions for Automatically Switched Optical Networks (ASON). ITU-T Recommendation M.3100 (2005), Generic network information model. ITU-T Recommendation Q.1901 (2000), Bearer Independent Call Control protocol. ITU-T Recommendation Q.2931 (1995), Digital Subscriber Signal
39、ling System No. 2 User-Network Interface (UNI) layer 3 specification for basic call/connection control plus amendments. ITU-T Recommendation Q.2982 (1999), Broadband integrated services digital network (B-ISDN) Digital Subscriber Signalling System No. 2 (DSS2) Recommendation Q.2931-based separated c
40、all control protocol. ITU-T Rec. G.7713/Y.1704 (05/2006) 3 3 Terms and definitions This Recommendation defines the following term: 3.1 signalling controller: A signalling controller contains the functions of connection control and/or call control. The following terms are defined in ITU-T Rec. G.805:
41、 Administrative domain Layer network Link connection Management domain Subnetwork Subnetwork connection The following term is defined in ITU-T Rec. G.806: Management Information (MI) signal The following terms are defined in ITU-T Rec. G.8080/Y.1304: Access Group Container Agent Component Control Do
42、main Call controller Call Segment Connection controller Connection admission control Hard Rerouting Routing controller Link resource manager Policy Protocol controller Rerouting Domain Restoration Routing Domain Soft Rerouting Soft permanent connection Switched connection Subnetwork point Subnetwork
43、 point pool Transport Domain UNI Transport Resource Identifier The following term is defined in ITU-T Rec. G.7712/Y.1703: Data communication network 4 ITU-T Rec. G.7713/Y.1704 (05/2006) The following terms are defined in ITU-T Recs G.852.2 and G.853.1: Connection termination point. (Examples of conn
44、ection termination points for technology specific instances may be found in ITU-T Recs G.784 (for SDH) and G.874 (for OTN).) Trail termination point. (Examples of trail termination points for technology specific instances may be found in ITU-T Rec. G.784 (for SDH) and ITU-T Rec. G.874 (for OTN).) Re
45、source The following term is defined in ITU-T Rec. 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 Container AGC-a A-end AGC AGC-z Z-end AGC ARC Alarm Reporting Control ASC-n A-end Signa
46、lling 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 Connection Controller CCC Calling/Called Party Call Controller CCC-a A-end CCC CCC
47、-z Z-end CCC CI Characteristic Information CoS Class of Service CP Connection Point CPS Connection Point Status CR-LDP Constraint-based Routing Label Distribution Protocol CTP Connection Termination Point DCM Distributed Call and Connection Management DCN Data Communication Network E-NNI External NN
48、I GoS Grade of Service ITU-T Rec. G.7713/Y.1704 (05/2006) 5 I-NNI Internal NNI LC Link Connection LRM Link Resource Manager MI Management Information MP Management Plane NCC Network Call Controller NCC-n NCC in domain n NNI Network Node Interface PC Protocol Controller PNNI Private NNI RC Routing Co
49、ntroller 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 SubNetwork Point SNPP SubNetwork Point Pool SPC Soft Permanent Connection TCC-n Transit CC in domain n TCP Termination Connection Point TSC-n Transit Signalling Controller in domain
