1、INTERNATIONAL TELECOMMUNICATION UNION ITU-T TELECOMMUNICATION STANDARDIZATION SECTOR OF ITU X.237 Amendment I (1 0196) SERIES X: DATA NETWORKS AND OPEN SYSTEM COMMUN CATI ON Open System Interconnection - Connectionless-mode protocol specifications Information technology - Open Systems Interconnectio
2、n - Connectionless protocol for the association control service element: Protocol specification Amendment 1 : Incorporation of extensibility markers and authentication parameters ITU-T Recommendation X.237 - Amendment I (Previously CCITT Recommendation) ITU-T X-SERIES RECOMMENDATIONS DATA NETWORKS A
3、ND OPEN SYSTEM COMMUNICATION PUBLIC DATA NETWORKS Services and facilities Interfaces Transmission, signalling and switching Network aspects Maintenance Administrative arrangements OPEN SYSTEM INTERCONNECTION Model and notation Service definitions Connection-mode protocol specifications X. 1 -X. 199
4、X. 1-X. 19 X.20-X.49 X.50-X.89 X.90-X. 149 X. 150-X. 179 X. 180-X. 199 X.200-X.299 X.200-X.209 X.210-X.219 X.220-X.229 Connectionkss-mode protocol specifications X.230-X.239 PICS proformas Protocol Identification Security Protocols Layer Managed Objects Conformance testing INTERWORKING BETWEEN NETWO
5、RKS General Satellite data transmission systems MESSAGE HANDLING SYSTEMS DIRECTORY OS1 NETWORKING AND SYSTEM ASPECTS Networking Efficiency Naming, Addressing and Registration Abstract Syntax Notation One (ASN. 1) OS1 MANAGEMENT , Systems Management framework and architecture Management Communication
6、 Service and Protocol Structure of Management Information Management functions 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.399 X.300-X.349 X.350
7、X.399 X.400-X.499 X.500-X.599 X.600-X.699 X.600-X.629 X.630-X.649 X.650-X.679 X.680-X.699 X.700-X.799 X.700-X.709 X.710-X.719 X.720-X.729 X.730-X.799 X.800-X.849 X.850-X.899 X.850-X.859 X.860-X.879 X.880-X.899 X.900-X.999 ForJurher details, please refer to ITU-T List of Recommendations. AND 1-ENGL
8、177b Li862591 b37015 703 m FOREWORD ITU (International Telecommunication Union) is the United Nations Specialized Agency in the field of telecommunications. The ITU Telecommunication Standardization Sector (ITU-T) is a permanent organ of the ITU. Some 179 member countries, 84 telecom operating entit
9、ies, 145 scientific and industrial organizations and 38 international organizations participate in ITU-T which is the body which sets world telecommunications standards (Recommendations). The approval of Recommendations by the Members of ITU-T is covered by the procedure laid down in WTSC Resolution
10、 No. i (Helsinki, i 993). In addition, the World Telecommunication Standardization Conference (WTSC), which meets every four years, approves Recommendations submitted to it and establishes the study programme for the following period. In some areas of information technology which fall within ITU-Ts
11、purview, the necessary standards are prepared on a collaborative basis with IS0 and IEC. The text of ITU-T Recommendation X.237, Amendment 1, was approved on 5th of October 1996. The identical text is also published as ISODEC International Standard 10035-1. NOTE In this Recommendation, the expressio
12、n “Administration” is used for conciseness to indicate both a telecommunication administration and a recognized private operating agency. 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 photoco
13、pying and microfilm, without permission in writing from the ITU. ITU-T Ree. X.237 (1994)/Amd.l(1996 E) i CONTENTS Page 1) Subclause 7.1.4 . 1 2) Subclauses 7.1.4.13 and 7.1.4.14 1 3) Subclause 7.2 1 4) Subclause 9.1 2 i ITU-T Rec. X.237 (1994)/Amd.l(1996 E) STD-ITU-T RECMN X-237 AMD 1-ENGL L99b m 48
14、b257L Ub370l.17 78b m Summary This amendment to the connectionless ACSE protocol specification includes the ASN. 1 extensibility marker in the module describing the protocol. It also enhances the connectionless ACSE protocol specification to provide support for conveyance of authentication parameter
15、s in the A-UNIT-DATA APDU. ITU-T Rec. X.237 (1994)/Amd.l(1996 E) iii ISO/IEC 10035-1 : 199YAmd.l : 1997 (E) INTERNATIONAL STANDARD Authentication mechanism name Authentication value ITU-T RECOMMENDATION U req ind U req ind INFORMATION TECHNOLOGY - OPEN SYSTEMS INTERCONNECTION - CONNECTIONLESS PROTOC
16、OL FOR THE ASSOCIATION CONTROL SERVICE ELEMENT: PROTOCOL SPECIFICATION AMENDMENT 1 Incorporation of extensibility markers and authentication parameters 1) Subclause 7.1.4 Add the following to the end of Table 1 - AUDTAPDU Fields 2) Subclauses 7.1.4.13 and 7.1.4.14 Add the following two new clauses,
17、immediately a)er 7.1.4.12. 7.1.4.13 Authentication mechanism name For the sending ACPM: This value is determined by the value of the Authentication Mechanism Name parameter of the A-UNIT- DATA request primitive. For the receiving ACPM: This value is used to determine the value of the Authentication
18、Mechanism Name parameter of the A- UNIT-DATA indication primitive, if issued. 7.1.4.14 Authentication Value For the sending ACPM: This value is determined by the value of the Authentication Value parameter of the A-UNIT-DATA request primitive. For the receiving ACPM: This value is used to determine
19、the value of the Authentication Value parameter of the A-UNIT-DATA indication primitive, if issued. NOTE - There is no need for an “ACSE requirements” field in the connectionless protocol. The use of the authentication functional unit by the sending ACPM is implicit in the presence of the mechanism-
20、name or calling-authentication-value fields. 3) Subclause 7.2 Add the following new item c) and replace the full stop at the end of item b) with a semi-colon. c) if the authentication functional unit is not supported, ignore any mechanism-name or calling-authentication-value field. ITU-T Rec. X.237
21、1994)/Amd.l (1996 E) 1 ISO/IEC 10035-1 : 199YAmd.l : 1997 (E) 4) Subclause 9.1 Replace the ASN. 1 module with the following: Connectionless-ACSE-I fioint-iso-itu-t association-control(2) module(2) clacsel(2) version(1) DEFINITIONS:= BEGIN - Connectionless-ACSE-l refers to ITU-T Rec. X237 I ISO/IEC
22、10035-1 IMPORTS AP-title, AE-qualifier, AE-title, Authentication-value, Mechanism-name, Objectset FROM ACSE-I Uoint-so-tu-t association-control(2) module(2) acsel(1) version(1) - The data types AP-title and AE-qualifier are importedfrom ITU-T Rec. X.227 I lSO/lEC 8650-1 AUDT-apdu := APPLICATION O IM
23、PLICIT SEQUENCE protocol-version 101 IMPLICIT BIT STRING (version1 (O) DEFAULT versionl, application-context-name I11 Application-context-name, called-AP-title 121 AP-title called-AE-qualifier 131 AE-qualifier called-AP-invocation-id 141 AP-invocation-id called- AE-invoca tion-id I51 AE-invocation-i
24、d calling-AP-title 161 AP-title calling-AE-qualifier 171 AE-qualifier calling-AP-invocation-id 181 AP-invocation-id calling-AE-invocation-id 191 AE-invocation-id - the following field shall only be present ifthe Authentication functional unit is selected mechanism-name 1111 IMPLICIT Mechanism-name -
25、 the following field shall only be present ifthe Authentication functional unit is selected calling-authentication-value EXPLICIT Authentication-value implementation-information 1291 IMPLICIT Graphic String . . , user-information 1301 IMPLICIT SEQUENCE SIZE (I, ., O,2MAX) OF EXTERNAL Application-con
26、text-name := OBJECT IDENTIFIER - As defined in CCITT Rec. X.650 I IS0 7498-3, an application-entity title is composed of an - application-process title and an application-entity qualifier. The ACSE protocol provides for the - transfer of an application-entity title value by the transfer of its compo
27、nent values. AE-invocation-id := INTEGER AE-invocation-id := INTEGER END OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, OPTIONAL, 2 ITU-T Rec. X.237 (1994)/Amd.l(1996 E) - STD-ITU-T RECMN X.237 AMD 1-ENGL 177b 48b2591 Ob37020 270 Series A Series B
28、 Series C Series D Series E Series F Series G Series H Series I Series J Series K Series L Series M Series N Series O Series P Series Q Series R Series S Series T Series U Series V Series X Series Z ITU-T RECOMMENDATIONS SERIES Organization of the work of the ITU-T Means of expression: definitions,
29、symbols, classification General telecommunication statistics General tariff principles Overall network operation, telephone service, service operation and human factors Non-telephone telecommunication services Transmission systems and media, digital systems and networks Audiovisual and multimedia sy
30、stems Integrated services digital network Transmission of television, sound programme and other multimedia signals Protection against interference Construction, installation and protection of cables and other elements of outside plant Maintenance: international transmission systems, telephone circui
31、ts, telegraphy, facsimile and leased circuits Maintenance: international sound programme and television transmission circuits Specifications of measuring equipment Telephone transmission quality, telephone installations, local line networks Switching and signalling Telegraph transmission Telegraph services terminal equipment Terminals for telematic services Telegraph switching Data communication over the telephone network Data networks and open system communication Programming languages
