1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU G.854.1 (1 1 /96) SERIES G: TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS Digital transmission systems - Digital networks - SDH network characteristics Management of the transport network - Com
2、putational interfaces for basic transport network model ITU-T Recommendation G.854.1 (Previously CCIT Recommendation) ITU-T G-SERIES RECOMMENDATIONS TRANSMISSION SYSTEMS AND MEDIA, DIGITAL SYSTEMS AND NETWORKS INTERNATIONAL TELEPHONE CONNECTIONS AND CIRCUITS INTERNA TIONAL ANALOGUE CARRIER SYSTEM TR
3、ANSMISSION SYSTEMS INDIVIDUAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE SYSTEMS ON METALLIC LINES GENERAL CHARACTERISTICS OF INTERNATIONAL CARRIER TELEPHONE WITH METALLIC LINES COORDINATION OF RADIOTELEPHONY AND LINE TELEPHONY TRANSMISSION MEDIA CHARACTERISTICS DIGITAL TRANSMISSION SYSTEMS
4、TERMINAL EQUIPMENTS GENERAL CHARACTERISTICS COMMON TO ALL ANALOGUE CARRIER- SYSTEMS ON RADIO-RELAY OR SATELLITE LINKS AND INTERCONNECTION General Coding of analogue signals by pulse code modulation Coding of analogue signals by methods other than PCM Principal characteristics of primary multiplex eq
5、uipment Principal characteristics of second order multiplex equipment Principal characteristics of higher order multiplex equipment Principal characteristics of transcoder and digital multiplication equipment Operations, administration and maintenance features of transmission equipment Principal cha
6、racteristics of multiplexing equipment for the synchronous digital h i era rc h y Other terminal equipment General aspects Design objectives for digital networks Quality and availability targets Network capabilities and functions DIGITAL NETWORKS SDH network characteristics DIGITAL SECTIONS AND DIGI
7、TAL LINE SYSTEM General Parameters for optical fibre cable systems Digital sections at hierarchical bit rates based on a bit rate of 2048 kbitis Digital line transmission systems on cable at non-hierarchical bit rates Digital line systems provided by FDM transmission bearers Digital line systems Dig
8、ital section and digital transmission systems for customer access to ISDN Optical fibre submarine cable systems Optical line systems for local and access networks G.100-G.199 G.200-G.299 G.300-G.399 G.400-G.449 G.450-G.499 G.600-G.699 G.700-G.799 G.700-G.709 G.710-G.719 G.720-G.729 G.730-G.739 G. 74
9、0-G.749 G.750-G.759 G.760-G.769 G.770-G.779 G.780-G.789 G.790-G.799 G.800-G.899 G.800-G.809 G .8 1 O-G. 8 1 9 G. 820-G. 829 G. 830-G. 839 G.840-6.899 G.900-G.999 G.900-G.909 G.910-G.919 G.920-G.929 G.930-G.939 G .940-G. 94 9 G.950-G.959 G. 960-G.969 G.970-G.979 G.980-G.999 For further details, pleas
10、e refer to ITU-T List of Recommendations. ITU-T RECOMMENDATION 6.854.1 MANAGEMENT OF THE TRANSPORT NETWORK - COMPUTATIONAL INTERFACES FOR BASIC TRANSPORT NETWORK MODEL Summary This Recommendation contains the computational viewpoint specification for managing a transport network from a network viewp
11、oint. In particular, this Recommendation details the computational viewpoint for subnetwork connection management. This Recommendation was written in accordance with G.85 1.1 Management of the transport network - Application of the RM-ODP framework. Source ITU-T Recommendation G.854.1 was prepared b
12、y ITU-T Study Group 15 (1993-1996) and was approved under the WTSC Resolution No. 1 procedure on the 8th of November 1996. FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Secto
13、r (ITU-T) is a permanent organ of the ITU. The ITU-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 Conference (WTSC), which me
14、ets every four years, establishes the topics for study by the ITU-T Study Groups which, in their turn, produce Recommendations on these topics. The approval of Recommendations by the Members of the ITU-T is covered by the procedure laid down in WTSC Resolution No. 1. In some areas of information tec
15、hnology which fall within ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. NOTE In this Recommendation, the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recognized operating agency. INTELL
16、ECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that the practice or implementation of this Recommendation may involve the use of a claimed Intellectual Property Right. The ITU takes no position concerning the evidence, validity or applicability of claimed Intellectual Property Rig
17、hts, whether asserted by ITU members or others outside of the Recommendation development process. As of the date of approval of this Recommendation, the ITU had/had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, im
18、plementors are cautioned that this may not represent the latest information and are therefore strongly urged to consult the TSB patent database. O ITU 1997 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including
19、photocopying and microfilm, without permission in writing from the ITU. 11 Recommendation G.854.1 (11/96) STD-ITU-T RECMN G-854-L-ENGL L97b 48b257L Ob34120 48T CONTENTS Page 1 Scope 2 References 3 Definitions 4 Abbreviations . 5 Computational interfaces for basic transport network model . Annex A .
20、Computational interfaces for simple subnetwork connection configuration . community enterprise requirements . simple SNC performer interface . A.2.1 sscc Set-up SNC . A.2.2 sscc release SNC . A.3 sscc SN interface query SN for snTPs . query SN for SNCs A.4 snTP interface . query snTP for SNC A.0 Com
21、putational interfaces to satis simple subnetwork connection configuration A.l Label references A.2 A.3.1 A.3.2 A.4.1 A.4.2 A.4.3 query snTP for subnetwork the point delimits query snTP for nTP . AS Service characteristics interface . A.6 nTP interface . query nTP for SnTPs . A.7 SNC interface . A.7.
22、1 get user label A.7.2 query SNC terminating points . A.7.3 get directionality A.7.4 query SNC for Transport Service Characteristics . A.6.1 Annex B . Computational interfaces for simple monitored subnetwork connection configuration . B.O Computational interfaces to satis simple monitored subnetwork
23、 connection configuration community enterprise requirements. B.l Label references B.2 monitored SNC performer interface - derived from simpleSncPerformerIfce Recommendation G.854.1 (11/96) 1 1 2 2 2 2 3 3 5 10 11 11 12 12 13 14 15 16 16 16 16 . 111 STDaITU-T RECMN G-854.1-ENGL 197b M 48b2591 Ob34121
24、 3Lb B.2.1 B.2.2 suspend SNC monitor reporting resume SNC monitor reporting . B.3 SNC monitor interface Get SNC operational State B.3.2 Get reportFailureStatus . SNC monitor reporting interface report SNC failure notification report SNC recovery notification B.3.1 B.4 B.4.1 B.4.2 Page 16 17 18 18 19
25、 20 20 20 iv Recommendation G.854.1 (11/96) . STD-ITU-T RECMN G.BSY.L-ENGL 199b YBb2.592 Ob34122 252 Recommendation G.854.1 MANAGEMENT OF THE TRANSPORT NETWORK - COMPUTATIONAL INTERFACES FOR BASIC TRANSPORT NETWORK MODEL (Geneva, 1996) 1 Scope This Recommendation describes the computational viewpoin
26、t specification for computational interfaces for basic transport network model. 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 indic
27、ated were valid. All Recommendations are subject to revision; all users of this Recommendation are therefore encouraged to investigate the possibility of applying the most recent edition of the Recommendations. A list of the currently valid ITU-T Recommendations is regularly published. - ITU-T Recom
28、mendation G.805 (1 995), Generic functional architecture of transport - ITU-T Recommendation G.85 1.1 (1 996), Management of the transport network - Application of the RM-ODPj-amework. ITU-T Recommendation G.852.1 (1 996), Management of the transport network - Enterprise viewpoint for simple subnetw
29、ork connection management. ITU-T Recommendation G.853.1 (1 996), Common elements of the information viewpoint for the management of a transport network. ITU-T Recommendation G.853.2 (1 996), Subnetwork connection management information viewpoint. ITU-T Recommendation M.3 100 (1995), Generic network
30、information model. networks. - - - - 3 Definitions None. 4 Abbreviations This Recommendation uses the following abbreviations. Ifce Interface ITU-T RM-ODP International Telecommunication Union - Telecommunication Standardization Sector Reference Model for Open Distributed Processing Recommendation G
31、.854.1 (11/96) 1 5 Computational interfaces are specified using engineering neutral computational templates, defined in Recommendation G.85 1.1. These computational interface templates may be translated to templates associated with more than one engineering realization for use in particular communic
32、ation domains. A complete computational specification requires the definition of computational objects and the scenarios which describe how the computational objects are used. The specification of computational objects is for further study. This is not the complete computational viewpoint for transp
33、ort networks, and these interfaces may be satisfied by a profile or subset of a more comprehensive interface description. An implementation which claims support of an interface in this Recommendation, as a server, shall implement all of the operations of that interface. The inheritance structure of
34、the computational viewpoint is not necessarily the same as the inheritance structure of the engineering viewpoint. Computational interfaces for basic transport network model Fully-qualified label reference ANNEX A Local reference used Computational interfaces for simple subnetwork connection configu
35、ration Fully-qualified ASN.l production reference “M.3 100 : 199x : ASN1DefnedTypesModule“:Failed A.0 Computational interfaces to satisfy simple subnetwork connection configuration community enterprise requirements The simple subnetwork connection community enterprise requirements are met by the int
36、erfaces specified in this Annex. A reference to a snTP interface type is equivalent to a reference to a nTP interface type. Local reference used Failed A.l Label references “M.3 1 O0 : 199x : ASN 1DefinedTypesModule“:Directionality “M.3 100 : 199x : ASN1DefinedTypesModule“:UserLabel The following in
37、formation relationships, static schema, and ASN. 1 productions are referenced in this Annex: Directionality UserLabel INFORMATION_RELATIONSHIP:subnetworkTPIsRelatedToExem I INFORMATION-FtELATIONSH1P:subnetworkConnectionHasTSC I I I I I I I 2 Recommendation 6.854.1 (11/96) A.2 simple SNC performer in
38、terface The simple subnetwork performer manages the set-up and release of subnetwork connections. The simple SNC performer interface is required to satis the enterprise requirements stated in: , . The simple subnetwork connection performer interface provides basic connection Set-up functionality. Th
39、e operation ssccSetupSubnetworkConnection sets up a subnetwork connection, and the operation ssccReleaseSubnetworkConnection removes the subnetwork connection. COMPUTATIONAL-INTERFACE simpleSncPerforrnerIfce OPERATION ; ; 1 A.2.1 sscc Set-up SNC This operation sets up a simple subnetwork connection
40、between a single A-End snTP or nTP, and a single Z-End snTP or nTP. OPERATION ssccSetupSubnetworkConnection INPUT-PARAMETERS subnetwork : SubnetworkId := (ssccSnIfce); - The subnetwork parameter is used to indicate the subnetwork across which the performer is setting - up the SNCs. This parameter is
41、 used, for example, when a given performer can set up SNCs in - many subnetworks. ifthe performer is associated with a single subnetwork, the subnetwork -parameter of this operation is redundant, and may be removed as an engineering optimization. snpa : SnTPId := (snTPIfce); snpz : SnTPId := (snTPIf
42、ce); dir : Directionality; suppliedUserLabel : UserLabel ; serviceCharacteristics: CharacteristicsId := (serviceCharacteristicsIfce) ; - zero length string implies none supplied - reference can be used to determine any QOS or routing characteristics; OUTPUT-PARAMETERS newSNC : SNCId := (sncIfce) ; a
43、greedUserLabel : UserLabel ; RAISED-EXCEPTIONS invalidTransportServiceCharacteristics: NULL; incorrectSubnetworkTerminationPoints : SEQUENCE OF SnTPId; - the list contains one element when only point is incorrect. subnetworkTerminationPointsConnected : SEQUENCE OF SnTPId; - the list contains one ele
44、ment when only one subnetworkTerminationPoint remains - connected failure : Failed; wrongDirectionality : Directionality; userLabelInuse : UserLabel; BEHAVIOUR INFORMAL ! This operation sets up a subnetwork connection between a given A-End snTP or nTP and a Z-End snTP or nTP. The subnetwork terminat
45、ion points or network termination points Recommendation G.854.1 (1 1/96) given to be 3 STD-ITU-T RECMN G-854.L-ENGL L99b D 48b259L Ob34125 TbL D connected are specified by explicitly identifiing the subnetwork network termination points or network termination points. The client may supply a unique u
46、ser label. If not supplied (Le. string length zero) the provider assigns a user label for the connection. A single point-to-point unidirectional, or point-to-point bidirectional, unpartitioned subnetwork connection object will be created. The subnetwork connection object will have one A-End and one
47、Z-End. The subnetwork connection will have a directionality (unidirectional or bidirectional) as specified in the operation parameters. If used, the service characteristics specifj one predetermined set of transport parameters which the server may offer. The operation replies for Set-up includes ful
48、l information about the reasons in case the request could not be satisfied. PW-CONDITIONS This operation will fail if any of the subnetwork termination points or network termination points specified is already involved in a subnetwork connection. The exception “subnetworkTerminationPointsConnected“
49、will be generated. This operation will fail if the subnetwork termination points or network termination points are not contained within the domain of the subnetwork. The exception “incorrectSubnetworkTerminationPoints“ will be generated. This operation will fail if the serviceCharacteristics requested is not supported by the computational object which executes the operation. The exception “invalidTransportServiceCharacteristics“ will be generated, PO ST-CONDITIONS If any subnetwork connection input parameters cannot be met by th
