1、 STD.ITU-T RECMN X.237 BIS-ENGL L998 4Bb259L Obb22bL BT3 6 INTERNATIONAL TELECOMMUNICATION UNION ITU=T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU X.237 bis (09/98) SERIES X: DATA NETWORKS AND OPEN SYSTEM COM M UN I CAT IONS Open Systems Interconnection - Connectionless-mode protocol specificati
2、ons Information technology - Open Systems Interconnection - Connectionless protocol for the Application Service Object Association Control Service Element ITU-T Recommendation X.237 bis (Previously CCITT Recommendation) STDmITU-T RECMN X-237 BIS-ENGL 1998 48b2591 Ob62262 73T ITU-T X-SERIES RECOMMEND
3、ATIONS DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS PUBLIC DATA NETWORKS Services and facilities Interfaces Transmission, signalling and switching Network aspects Maintenance Administrative arrangements Model and notation Service definitions OPEN SYSTEMS INTERCONNECTION x. 1-x. 19 X.20-X.49 X.50-X.8
4、9 x.90-x.149 X. 150-X. 179 X.180-X.199 x.200-x.209 X.210-X.219 Connection-mode protocol specifications x.220-x.229 PICS proformas Protocol Idenufication Security Protocols Layer Managed Objects Conformance testing INTERWORKING BETWEEN “VORKS General Satellite data transmission systems MESSAGE HANDLI
5、NG SYSTEMS DIRECTORY OS1 NETWORKING AND SYSTEM ASPECTS Networking Efficiency Quality of service Naming, Addressing and Registration Abstract Syntax Notation One (ASN.1) Systems Management framework and architecture Management Communication Service and Protocol Structure of Management Infomation Mana
6、gement functions and ODMA functions OS1 MANAGEMENT SECURITY OS1 APPLICATIONS Commitment, Concurrency and Recovery Transaction processing Remote operations OPEN DISTRIBUTED PROCESSING 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-
7、X.629 X.630-X.639 x.640-x.649 X.650-X.679 X.68-X.699 X.700-X.7(w X .7 1 0-X.7 19 X.720-X.729 x.730-x.799 X .8O-X. 849 X.850-X.859 X.860-X. 879 X.880-X.899 x.9 00-x.9 99 For further details, please refer to ITU-T List of Recommendations. STDmITU-T RECMN X.237 BIS-ENGL 1998 48b2591 Obb22b3 b7b W INTER
8、NATIONAL STANDARD 15955 ITU-T RECOMMENDATION X.237 bis INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - CONNECTIONLESS PROTOCOL FOR THE APPLICATION SERVICE OBJECT ASSOCIATION CONTROL SERVICE ELEMENT Summary This Recommendation I International Standard specifies the protocol for the A-UNIT-DAT
9、A service for the Association Control Service Element (ACSE). The A-UNIT-DATA service provides for information transfer between appiication- entities utilizing the connectionless presentation service. I Source The ITU-T Recommendation X.237 bis was approved on the 25th of September 1998. The identic
10、al text is also published as ISO/IEC International Standard 15955. IT-T Rec. X.237 bis (1998 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 permanen
11、t organ of the ITU. The IT-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 meets every four years, es
12、tablishes the topics for study by the IT-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 technology which fail within
13、 ITU-Ts purview, the necessary standards are prepared on a collaborative basis with IS0 and LEC. NOTE In this Recommendation. the expression “Administration“ is used for conciseness to indicate both a telecommunication administration and a recopized operating agency. INTELLECTUAL PROPERTY RIGHTS The
14、 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 IT takes no posiuon concerning the evidence, validity or applicability of claimed Intellectual Property Rights, whether asserted by ITU
15、 members or others outside of the Recommendation 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 th
16、is may not represent the latest information and are therefore strongly urged to consult the TSB patent database. O ITU 1999 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, with
17、out permission in writing from the IT. 11 ITU-T Rec. X.237 bis (1998 E) _ - - STD*ITU-T RECMN Xe237 BIS-ENGL 1998 4862591 U662265 4Li9 CONTENTS Page 1 Scope 1 2 Normative references 1 2.1 Identical -T Recommendations I International Standards . 1 2.2 2 . Paired ITU-T Recommendations I International
18、Standards equivalent in technical content 3 Definitions 3 3.1 Reference model definitions 3 3.2 Naming and addressing definitions . 3 3.3 Semice conventions definitions 3 3.4 Presentation service definitions . 3 3.5 ACSE service definitions 4 3.6 Application Layer Structure definitions 4 . 4 Abbrevi
19、ations . 4 4.1 Data Units 4 4.2 Tjps of application-protocol-data-units 4 4.3 Other abbreviations 5 . 5 Conventions 5 6 Overview of the protocol 5 6.1 Senice provision . 5 6.2 Use of a supporting service . 5 6.3 Model 6 7 Elements of procedure 7.1 A-LNT-DATA transfer . 7.1.1 Purpose 7.1.3 APDUs used
20、 7.1.3 A-UNIT-DATA transfer procedure . 7.1.1 Use of the AUDT APDU fields . 7.1.5 Collisions and interactions 7.2 Rules for extensibility . 8 Mapping to the supporting service . 8.1 IA-WIT-DATA.submit. . 8.1.1 When Invoked . 8.1.2 Action upon Receipt 8.2 IA-WIT-DATA.deliver . 8.2.1 When Invoked . 8.
21、2.2 Action upon Receipt 8.2.3 IA-UNIT-DATA Parameters . 6 6 6 6 6 7 10 10 10 10 10 10 10 10 10 10 . ITU-T Rec. X.237 bis (1998 E) 111 STD-ITU-T RECMN Xe237 BIS-ENGL 1998 48b2571 Obb22bb 385 m 9 Abstract Syntax Definition of APDUs . 10 Conformance 10.1 Statement requirements . 10.2 Static requirement
22、s 10.3 Dynamic requirements . 11 Precedence Annex A - State table A.l General A.2 Conventions . A.3 Actions to be taken by the ACPM . A.4 Relationship to Presentation and other ASES Annex B - Summary of Assigned Object Identifier values . Annex C - Specification of IA-Service Mapping to the Presenta
23、tion and ACSE Service ITU-T Rec . X.237 bis (1998 E) Page 11 12 12 12 12 12 13 13 13 13 13 15 16 STD*ITU-T RECMN X.237 BIS-ENGL L998 4Bb259L Obb22b7 2LL W Introduction This Recommendation I International Standard is one of a set of Recommendations I International Standards produced to facilitate the
24、 interconnection of information processing systems. It is related to other ITLJ-T Recommendations I International Standards in the set as defined by the Reference Model for Open Systems Interconnection (see IT-T Rec. X.200 I ISOIIEC 7498-1). The reference model subdivides the areas of standardizatio
25、n for interconnection into a series of layers of specification, each of manageable size. The goal of Open Systems Interconnection is to allow, with a minimum of technical agreement outside the Interconnection standards, the interconnection of information processing systems: - from different manufact
26、urers; - under different managements; - - of different technologies. of different levels of complexity; and This Recommendation I International Standard specifies the protocol for the A-UNIT-DATA service for the Association Control Service Element (ACSE). The A-UNIT-DATA service provides for informa
27、tion transfer between application-entities utilizing the connectionless presentation service. This service is intended to be applicable to a wide range of application process communication requirements. This Recommendation I International Standard includes an Annex 17 that describes the protocol mac
28、hine of ACSE in terms of a state table. This protocol machine is referred to as the Association Control Protocol Machine (ACPM). IT-T Rec. X.237 bis (1998 E) V INTERNATIONAL STANDARD ITU-T RECOMMENDATION INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - CONNECTIONLESS PROTOCOL FOR THE APPLICAT
29、ION SERVICE OBJECT ASSOCIATION CONTROL SERVICE ELEMENT 1 Scope This Recommendation I International Standard specifies: a) b) procedures for the transfer of infomation among application-service-objects (ASOS); and the abstract and concrete syntax for the representation of the A-UNIT-DATA ACSE APDU. T
30、he A-UNIT-DATA procedure is defined in terms of a) The interactions between peer ACSE protocol machines by the use of a supporting service; and b) the interaction between an ACSE protocol machine, its service-provider and its service-user. These procedures are applicable to instances of communicatio
31、n between systems which wish to communicate in an open systems interconnection environment in a connectionless mode. This Recommendation I International Standard also specifies conformance requirements for systems implementing this procedure. It does not contain tests which can be used to demonstrat
32、e conformance. 2 Normative references The following Recommendations and Intemational Standards contain provisions which, through reference in this text, constitute provisions of this Recommendation i International Standard. At this time of publication, the editions indicated were valid. Ail Recommen
33、dations and Standards are subject to revision, and parties to agreements based on this Recommendation I International Standard are encouraged to investigate the possibility of applying the most recent edition of the Recommendations and Standards listed below. Members of IEC and IS0 maintain register
34、s of currently valid International Standards. The Telecommunication Standardization Bureau of the IT maintains a list of currently valid IT-T Recommendations. 2.1 Identical Recommendations I International Standards - ITU-T Recommendation X.200 (19943 I ISOLEC 7498-1:1994, Information technology - Op
35、en Systems Interconnection - Basic reference model: The basic model. IT-T Recommendation X.207 (1993) I ISO/IEC 9545:1994, Information technology - Open Systems Interconnection - Application layer structure. ITU-T Recommendation X.210 (1993) I ISO/LEC 10731:1994, Information technology - Open System
36、s Interconnection - Basic Reference Model: Conventions for the definition of OSI services. IT-T Recommendation X.215 (1995) I ISO/IEC 8326:1996, Information technulogy - Open Systems Interconnection - Session service dejnition. ITU-T Recommendation X.215 (1995)Amd.l (1997) I ISO/EC 8326:1996Amd.l:19
37、98, Information technology - Open Systems Interconnection - Session service definition - Amendment 1 : Ejciency enhancements. ITU-T Recommendation X.215 (1995YAmd.2 (1997) I ISO/IEC 8326:1996/Amd.2:1998, Information technoIogy - Open Systems Interconnection - Session service definition - Amendment 2
38、 Nested connections functional unit. - - - - - ITU-T Rec. X.237 bis (1998 E) 1 - - STD-ITU-T RECMN X.237 BIS-ENGL L998 W 48b259L Ohh22b 094 W ISO/IEC 15955 : 1999 (E) - I-T Recommendation X.216 (1994) I ISO/IEC 8822:1994, Information technology - Open Systems Interconnection - Presentation service
39、definition. I-T Recommendation X.216 (1994)/Amd.l (1997) I ISOIEC 88221994/Amd.l:1998, Information technology - Open Systems Interconnection - Presentation service definition - Amendment 1 : EfKiency enhancements. IT-T Recommendation X.216 (1994)/Amd.2 (1997) I ISO/IEC 8822: 1994/Amd.2: 1998, Inform
40、ation technology - Open Systems Interconnection - Presentation service definition - Amendment 2: Nested connections b) application-process; c) application-entity ; d) application-service-element; e) application-protocol-data-unit; f) connectionless-mode presentation-service; g) connectionless-mode s
41、ession-service; and h) 0-connectionless-mode transmission. 3.2 Naming and addressing definitions This Recommendation I International Standard makes use of the following terms defined in ITU-T Rec. X.650 I ISO/IEC 7498-3. a) application-entity qualifier; b) application-entity invocation-identifier; c
42、) application-process titie; d) application-process invocation-identifier; and e) presentation address. 3.3 Service conventions definitions This Recommendation I International Standard makes use of the following terms defined in ITU-T Rec. X.210 I ISO/IEC 1073 1 : a) service-provider: b) service-use
43、r; c) non-confirmed service; d) primitive: e) request (primitive); t) indication (primitive); E) submit;and h) deliver. 3.4 Presentation service definitions This Recommendation I International Standard makes use of the following terms defined in ITU-T Rec. X.216 I ISO/IEC 8822: a) presentation data
44、value; b) abstract syntax; and c) abstract syntax name. ITU-T Rec. X.237 bis (1998 E) - - 3 STDeITU-T RECMN X.237 BIS-ENGL 1998 = 48b2591 Obb2271 742 ISOAEC 15955 : 1999 (E) 3.5 ACSE service definitions This Recommendation I International Standard makes use of the following terms defined in ITU-T Re
45、c. X.217 bis I ISOIIEC 15953. a) application-association; b) application context; c) Association Control Service Element; d) ACSE service-user; e) ACSE service-provider; I) requester; and g) acceptor. 3.6 Application Layer Structure definitions This Recommendation I International Standard make use o
46、f the foliowing terms defined in IT-T Rec. X.207 I I ISO/IEC 9545. l a) application-entity invocation, b) application-service-object, c) ASO-context, d) ASO-association, e) ASO-invocation, f, ASOI-tag, 9) ASOI-identifier, h) ASO-name, i) ASO-qualifier, j) ASO-titie, k) childAS0, 1) parent ASO; and m
47、) control function. 4 Abbreviations For the purposes of this Recommendation I International Standard, the following abbreviations apply. 4.1 Data Units APDU application-protocol-data-unit 4.2 Types of application-protocol-data-units The following abbreviation has been given to the application-protoc
48、ol-data-unit defined in this Recommendation I International Standard: AUDT A-UNIT-DATA APDU 4 ITU-T Rec. X.237 bis (1998 E) STD-ITU-T RECMN X.237 BIS-ENGL I1998 W 48b259L Obb2272 b89 W ISODEC 15955 : 1999 (E) 4.3 Other abbreviations The following abbreviations are used in this Recommendation I Inter
49、national Standard: ACPM Association Control Protocol Machine ACSE Association Control Service Element AE application-entity AEI application-entity invocation AP application-process APCI application-protocol-control-information ASE application-service-element ASO application-service-object ASO1 ASO-invocation ASN.1 Abstract Syntax Notation One CF control function ITU-T iEC International Electrotechnical Commission IS0 International Organization for Standardization OS1 Open Systems Interconnection Intemational Telecommunication Unio
