1、STD*ITU-T RECMN X-852-ENGL 1997 m 48b2591 Ob48032 888 m I NTE RNATI O N AL TE LE COM M U N I CATI ON U N I ON ITUWT TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU X.852 (1 2/97) SERIES X: DATA NETWORKS AND OPEN SYSTEM COM M U N I CATI O N OS1 applications - Commitment, Concurrency and Recovery Info
2、rmation technology - Open Systems Interconnection - Protocol for the commitment, concurrency and recovery service element: Protocol specification ITU-T Recommendation X.852 (Previously CCIT Recommendation) ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS AND OPEN SYSTEM COMMUNICATION PUBLIC DATA NETWORK
3、S Services and facilities Interfaces Transmission, signalling and switching Network aspects Maintenance Administrative arrangements Model and notation Service definitions Connection-mode protocol specifications Connectionless-mode protocol specifications PICS proformas Protocol Identification Securi
4、ty Protocols Layer Managed Objects Conformance testing OPEN SYSTEM INTERCONNECTION INTERWORKING BETWEEN NETWORKS General Satellite data transmission systems MESSAGE HANDLING SYSTEMS DIRECTORY OS1 NETWORKING AND SYSTEM ASPECTS Networking Efficiency Quality of service Naming, Addressing and Registrati
5、on Abstract Syntax Notation One (ASN. 1) OS1 MANAGEMENT Systems Management framework and architecture Management Communication Service and Protocol Structure of Management Information Management functions and ODMA functions SECURITY OS1 APPLICATIONS X. I-X. 19 X.20-X.49 X.50-X.89 X.90-X.149 X.150-X.
6、179 X. 180-X. 199 X.200-X.209 X.210-X.219 X.220-X.229 X.230-X.239 X.240-X.259 X.260-X.269 X.270-X.279 X.280-X.289 X.290-X.299 X.300-X.349 X.350-X.399 X.400-X.499 X.500-X.599 X .600-X . 629 X.630-X.639 X.640-X.649 X.650-X.679 X.680-X.699 X.700-X.709 X.710-X.719 X.720-X.729 x.730-x.799 X.800-X. 849 Co
7、mmitment, Concurrency and Recovery X.850-X.859 Transaction processing Remote operations OPEN DISTRIBUTED PROCESSING X.860-X.879 X.880-X.899 X.900-X.999 For fUrther details, please refer to ITU-T List of Recommendations. INTERNATIONAL STANDARD 9805-1 ITU-T RECOMMENDATION X.852 INFORMATION TECHNOLOGY
8、- OPEN SYSTEMS INTERCONNECTION - PROTOCOL FOR THE COMMITMENT, CONCURRENCY AND RECOVERY SERVICE ELEMENT: PROTOCOL SPECIFICATION Summary This Recommendation I International Standard describes the application layer protocol for OS1 commitment, concurrency and recovery service element. OS1 CCR provides
9、a service by which a set of actions are grouped together to form an “atomic action”, where either the entire set of actions is performed or none is performed. The specification of Version 1 is included for completeness only. It is not anticipated that it will be used by ITU-T applications. This vers
10、ion differs mainly in its mapping through presentation onto the session service and, in particular, requires the use of the Session Data Separation Functional Unit. Source The ITU-T Recommendation X.852 was approved on the 12th of December 1997. The identical text is also published as ISO/IEC Intern
11、ational Standard 9805- 1. ITU-T Rec. X.852 (1997 E) 1 FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommuni- cations. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the IT. The -T is responsible for
12、 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 meets every four years, establishes the topics for study by the ITU-T Stu
13、dy 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 technology which fall within ITU-Ts purview, the necessary standards are p
14、repared 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. INTELLECTUAL PROPERTY RIGHTS The ITU draws attention to the possibility that
15、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 Rights, whether asserted by ITU members or others outside of the Recommend
16、ation development process. As of the date of approval of this Recommendation, the ITU had not received notice of intellectual property, protected by patents, which may be required to implement this Recommendation. However, implementors are cautioned that this may not represent the latest information
17、 and are therefore strongly urged to consult the TSB patent database. o ITU 1998 All rights reserved. No part of this publication may be reproduced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from the ITU. 11
18、ITU-T Rec. X.852 (1997 E) - STDmITU-T RECMN X.852-ENGL 3997 = 4862593 Ob48036 423 CONTENTS 1 Scope 2 Normative references . Identical Recommendations I International Standards 3 Definitions 3.1 Reference model definitions . 3.2 Naming and addressing definitions . 3.3 Service conventions definitions
19、3.4 Presentation service definitions 3.5 ACSE service definitions 3.6 Application Layer Structure definitions 3.7 CCR service definitions 3.8 2.1 CCR protocol specification definitions . 4 Abbreviations . 4.1 Data units 4.2 Types of application-protocol-data-units 4.3 Other abbreviations . 5 Convent
20、ions . 6 Overview of the CCR protocol . 6.1 Service support . 6.2 Constraints on ACSE services 6.3 Use of the presentation service . 6.4 Relationship to the session-service and the transport-service . 6.5 Operation of the CCRPM 6.6 Rules of extensibility 7 Elements of procedures 7.1 Initialization p
21、rocedure . 7.2 Begin branch procedure 7.3 Prepare procedure . 7.4 Signal readiness procedure . 7.5 Order commitment 7.6 Rollback procedure . 7.7 No-change completion procedure . 7.8 Cancel procedure 7.9 Branch recovery procedure . 7.10 Order commitment and begin branch procedure . 7.11 Error procedu
22、re . 8 CCRPM state table . 8.1 General 8.2 Incoming events 8.3 Outgoing events 8.4 Specific actions . 8.5 Predicates 8.6 Enablements 8.7 Variables . 8.8 Notation ITU-T Rec . X.852 (1997 E) Page 1 1 1 2 2 2 3 3 3 3 3 5 5 5 5 5 6 6 6 6 7 7 8 8 8 9 11 14 15 16 18 20 22 23 26 27 27 27 28 28 29 29 29 29
23、29 . 111 9 10 11 12 STDmITU-T RECMN X-852-ENGL 3997 48b2593 Ob48037 3bT 8.9 Conventions 8.10 Actions to be taken by the CCRPM 8.1 1 Changes to atomic action data 8.12 Changes to bound data Reference mapping to the ACSE and presentation services 9.1 Initialize 9.2 Begin branch . 9.3 Prepare 9.4 Signa
24、l readiness 9.5 Order commitment 9.6 Rollback 9.7 No-change completion 9.8 Cancel . 9.9 Branch recovery 9. 10 Order commitment and begin branch procedure . Concatenations and mappings 10.1 Mapping precedence . 10.2 Allowable concatenations . Precedence Conformance 12.1 Statement requirements . 12.2
25、Static conformance requirements 12.3 Presentation transfer syntax 12.4 Bound data and atomic action data . 12.5 Dynamic conformance requirements Annex A . Definition of CCR data types A.l Information object names A.2 Datatype definitions for CCR Protocol . Annex B - Using the CCR ASE in combination
26、with other ASES . B . 1 Introduction . B.2 Service primitives . B.3 Conformance . B.4 CCR events . B.5 Purge and flow control B.6 Delimitation of atomic actions B.7 Named mapping variations . Page 30 30 31 31 42 42 43 44 44 44 45 45 45 45 45 46 46 46 47 47 47 48 48 48 48 49 49 49 53 53 53 53 53 54 5
27、4 54 iv ITU-T Rec . X.852 (1997 E) Introduction This Recommendation I International Standard is one of a set of Recommendations I International Standards produced to facilitate the interconnection of information processing systems. It is related to other Recommendation I International Standards in t
28、he set as defined by the Reference Model for Open Systems Interconnection (see IN-T Rec. X.200 I ISO/IEC 7498-1). The Reference Model subdivides the area of standardization for interconnection into a series of layers of specification, each of manageable size. The goal of Open Systems Interconnection
29、 is to allow, with a minimum of technical agreement outside the interconnection standards, the interconnection of information processing systems: - fi-om different manufacturers; - under different managements; - - of different technologies. of different levels of complexity; and This Recommendation
30、I International Standard specifies the protocol for the application-service-element for Commitment, Concurrency, and Recovery (CCR). These services are intended to be applicable to a wide range of application-process communication requirements. This Recommendation I International Standard specifies
31、CCR Protocol Version 2. The 1990 edition of ISO/IEC 9805 specified CCR protocol Version 1. The 1993/1994 editions of this Recommendation I International Standard specified both CCR protocol Version 1 and CCR protocol Version 2, for the static commitment functional unit only. The CCR protocol specifi
32、cation consists of the following main components: a) the specification of the CCR APDUs using Abstract Syntax One (ASN.l, ITU-T Rec. X.680 I the elements of procedure for issuing CCR service indication and confirm primitives to the CCR service-user when CCR APDUs are received and for the sending of
33、CCR APDUs when CCR service request and indication primitives are received from the CCR service-user; the CCR protocol machine Specified in terms of a state table; and the presentation services (see ITU-T Rec. X.216 I ISOAEC 8822) used for sending and receiving CCR APDUs. ISOAEC 8824-1); b) c) d) The
34、 CCR protocol shares the presentation-service with other application-service-elements. The requirement to provide support for CCR together with other application-service-elements is satisfied by reference to this Recommendation I International Standard. Annex A contains the definitions of the struct
35、ure of the CCR APDUs. Annex B describes how the CCR can be used in combination with other ASES that use the presentation service in a way that is not compatible with the use of the presentation service by CCR as specified in the body of this Recommendation I International Standard. ITU-T Rec. X.852
36、(1997 E) V ISODEC 9805-1 : 1998 (E) INTERNATIONAL STANDARD ITU-T RECOMMENDATION INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - PROTOCOL FOR THE COMMITMENT, CONCURRENCY AND RECOVERY SERVICE ELEMENT: PROTOCOL SPECIFICATION 1 Scope This Recommendation I International Standard is to be applied
37、by reference from other specifications. This is done within such specifications by reference to the CCR services defined in ITU-T Rec. X.851 I ISOAEC 9804. A reference to a CCR service invokes the procedures of this Recommendation I International Standard to cause external effects. This Recommendati
38、on I International Standard specifies, in clause 9, a use of the ACSE, Presentation and Session services to carry the CCR semantics. This “reference” mapping can be used whenever the use of these services does not conflict with the user made by other ASES or ASOS that are using the same association.
39、 Annex B defines how a different use of supporting services may be specified, for use where the reference mapping is inappropriate. This Recommendation I International Standard specifies the static and dynamic conformance requirements for systems implementing these procedures. It does not contain te
40、sts which can be used to demonstrate conformance. This edition of this Recommendation I International Standard specifies CCR protocol Version 2, which makes use of the Session Data Separation functional unit to protect data not belonging to the CCR atomic action. The 1990 edition of ISOAEC 9805 spec
41、ified CCR protocol Version 1. The 1993/1994 edition of this Recommendation I International Standard specified both CCR protocol Version 1 and CCR protocol Version 2, for the static commitment functional unit only. This International Standard specifies the protocol elements that support the following
42、 functional units: a) static commitment; b) dynamic commitment; c) readonly; d) one-phase commitment; e) cancel; and f) overlapped recovery. 2 Normative references The following Recommendations and International Standards contain provisions which, through reference in this text, constitute provision
43、s of this Recommendation I International Standard. At the time of publication, the editions indicated were valid. All Recommendations and Standards are subject to revision, and parties to agreements based on this Recommendation I International Standard are encouraged to investigate the possibility o
44、f applying the most recent edition of the Recommendations and Standards listed below. Members of IEC and IS0 maintain registers of currently valid International Standards. The Telecommunication Standardization Bureau of the ITU maintains a list of currently valid ITU-T Recommendations. 2.1 Identical
45、 Recommendations I International Standards - ITU-T Recommendation X.200 (1994) I ISODEC 7498-1: 1994, Information technology - Open Systems Interconnection - Basic Reference Model: The Basic Model. ITU-T Recommendation X.207 (1993) I ISO/IEC 9545:1994, Information technology - Open Systems Interconn
46、ection - Application layer structure. ITU-T Recommendation X.210 (1993) I ISODEC 10731:1994, Information technology - Open Systems Interconnection - Basic Reference Model : Conventions for the definition of OSI services. - - ITU-T Rec. X.852 (1997 E) 1 - - STD-ITU-T RECMN X.852-EhlGL 1977 m 4862593
47、Ob48040 954 m ISOIIEC 9805-1 : 1998 (E) - IT-T Recommendation X.215 (1995) I ISO/IEC 8326:1996, Information technology - Open Systems Interconnection - Session service definition. - ITU-T Recommendation X.216 (1994) I ISOJEC 8822: Interconnection - Presentation service definition. 994, Information t
48、echnology - Open Systems - ITU-T Recommendation X.217 (1995) I ISO/IEC 8649: 996, Information technology - Open Systems Interconnection - Service definition for the association control service element. ITU-T Recommendation X.227 (1995) I ISO/IEC 8650-1: 1996, Information technology - Open Systems In
49、terconnection - Connection-oriented protocol for the association control service element: Protocol specification. ITU-T Recommendation X.650 (1996) I ISO/IEC 7498-3:1997, Information technology - Open Systems Interconnection - Basic Reference Model: Naming and addressing. ITU-T Recommendation X.680 (1994) I ISO/IEC 8824-1: 1995, Information technology -Abstract Syntax Notation One (ASN. I): Specification of basic notation. ITU-T Recommendation X.680 (1994)/Amd. 1 (1995) I ISOEC 8824-1: 1995IAmd. 1:1995, Information technology - Abstract Syntax Notation One (ASN.1): Spec8ca
