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1、INTERNATIONAL STANDARD ISO/IEC 9072-3 First edition 1996-09-I 5 Information technology - Open Systems Interconnection - Remote Operations: Protocol Implementation Conformance Statement (PIGS) proforma Technologies de /information - lnterconnexion de systemes ouverts (0.9) - Op - under different mana
2、gements; - of different levels of complexity; and - of different technologies. The Remote Operations Service Element (ROSE) is an application-service-element commonly used by a number of applications. ROSE supports interactive applications in a distributed open systems environment. A Remote Operatio
3、n is requested by one entity; the other entity attempts to perform the Remote Operation and then reports the outcome of the attempt. To evaluate the conformance of a particular implementation, it is necessary to have a description of the capabilities and options which have been implemented. Such a d
4、escription is called a Protocol Implementation Conformance Statement (PIGS). This Recommendation I International Standard includes the PICS proforma for the remote operations protocol as defined in CCITT Rec. X.229 (1988) I ISO/IEC 9072-2:1989. V Copyright International Organization for Standardizat
5、ion Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:39:31 MDTNo reproduction or networking permitted without license from IHS -,-,- ISOAEC 9072-3 : 1996 (E) INTERNATIONAL STANDARD ITU-T RECOMMENDATION INFORMATION TECHNOLOGY - OPEN S
6、YSTEMS INTERCONNECTION - REMOTE OPERATIONS: PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT (PICS) PROFORMA 1 Scope This Recommendation I International Standard provides the Protocol Implementation Conformance Statement (PICS) proforma for the Remote Operations protocol specified in the CCITT Rec. X.2
7、29 (1988) I ISO/IEC 9072-2:1989. This PICS proforma is in compliance with the relevant requirements, and in accordance with the relevant guidance given in ITU-T Rec. X.296 I ISO/lEC 9646-7. Detail of the use of this proforma is provided in this Recommendation I International Standard. The supplier o
8、f an implementation which is claimed to conform to CCITT Rec. X.229 I ISO/IEC 9072-2 is required to complete a copy of the PICS proforma provided in Annex A, and is required to provide the information necessary to identify both the supplier and the implementation. 2 Normative references The followin
9、g Recommendations I International Standards contain provisions which, through reference in this text, constitute provisions 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 t
10、he 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 registers of currently valid International Standards. Th
11、e Telecommunication Standardization Bureau of the ITU maintains a list of valid ITU-T Recommendations. 2.1 Identical Recommendations I International Standards - ITU-T Recommendation X.200 (1994) I ISO/IEC 7498-1:1994, Information technology - Open Systems Interconnection - Basic Reference Model: The
12、 Basic Model. - ITU-T Recommendation X.58 1 (1995) I ISO/lEC 14608-l : 1996, Information technology - Open Systems Interconnection - The Directory: Directory access protocol - Protocol Implementation Conformance Statement (PIGS) proforma. 2.2 Paired Recommendations I International Standards equivale
13、nt in technical content - CCITT Recommendation X.219 (1988), Remote operations: Model, notation and service definition. ISO/IEC 9072-1:1989, Information processing systems - Text communication - Remote Operations - Part 1: Model, notation and service definition. - CCITT Recommendation X.229 (1988),
14、Remote operations: Protocol spectfication. ISO/lEC 9072-2:1989, Information processing systems - Text communication - Remote Operations - Part 2: Protocol speciftcation. - ITU-T Recommendation X.290 (1995), OS1 conformance testing methodology and framework for protocol Recommendations for ITU-T appl
15、ications - General concepts. ISO/IEC 9646-1:1994, Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 1: General concepts. ITU-T Rec. X.249 (1995 E) 1 Copyright International Organization for Standardization Provided by IHS under license with
16、ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:39:31 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IEC 9072-3 : 1996 (E) - ITU-T Recommendation X.296 (1993, OSZ conformance testing methodology and framework for protocol Recommendation
17、s for ITU-T applications - Implementation conformance statements. ISOIIEC 9646-7:1995, Information technology - Open Systems Interconnection - Conformance testing methodology and framework - Part 7: Implementation Conformunce Statements. 2.3 Additional references - CCITT Recommendation X.483 (1996),
18、 Messaging handling systems - P3 Protocol PICS proforma. - CCIIT Recommendation X.484 (1996). Messaging handling systems - P7 Protocol PIGS proforma. 3 Definitions This Recommendation I International Standard makes use of the following terms defined in ITU-T Rec. X.290 I ISO/IEC 9646- 1: a) Implemen
19、tation Conformance Statement; b) Implementation Conformance Statement proforma; c) Protocol Implementation Conformation Statement (PICS); and d) PICS proforma. 4 Abbreviations For the purposes of this Recommendation I International Standard, the following abbreviations apply: ICS Implementation Conf
20、ormance Statement PIGS Protocol Implementation Conformance Statement 5 Conformance A conforming PICS proforma shall be technically equivalent to the ITU-T I ISO/IEC published PICS proforma and shall preserve the numbering and ordering of the items in the ITU-T I ISO/IEC PICS proforma. A PICS which c
21、onforms to this Recommendation I International Standard shall: a) describe an implementation which conforms to CCITT Rec. X.229 I ISO/IEC 9072-2; b) be a confirming PICS proforma, which has been completed in accordance with the instruction for completion given in A.2; c include the information neces
22、sary to uniquely identify both the supplier and the implementation. ITU-T Rec. X.249 (1995 E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:39:31 MDTNo reproduction or netwo
23、rking permitted without license from IHS -,-,- ISO/IEC 9072-3 : 1996 (E) Annex A PICS proforma for the remote operations protocoll) (This annex forms an integral part of this Recommendation I International Standard) A.1 Identification of PICS proforma corrigenda The supplier of the PICS proforma sha
24、ll identify any corrigenda (i.e. Technical Corrigenda or equivalent) to the published proforma that have been applied. Suppliers of the proforma should modify the proforma, or attach relevant additional pages in order to apply the corrigenda, and then record the application of the corrigenda in the
25、table below. Item I ITU-T Rec. X.249 (1995) I ISO/IEC 9072-3: 1996 1 corr: 2 Corr: 3 Corr: 4 Implementors Guide version: A.2 Instructions A.2.1 Purpose and structure of the proforma The purpose of this PICS proforma is to provide suppliers of implementations of CCITI Rec. X.229 I ISO/IEC 9072-2 with
26、 a consistent means of stating which capabilities have been implemented. The proforma is in the form of a questionnaire and consists of a set of items. An item is provided for each capability for which an implementation choice is allowed. Items are also provided for major mandatory capabilities for
27、which no implementation choice is allowed. Each item includes an item number, an item description, a status value specifying the support requirement, and room for a support answer to be provided by the supplier. This subclause provides general information and instructions for completion of the profo
28、rma. Subclause A.3 is for identification of the implementation. Subclause A.4 contains the means of specifying, at a high level, the protocol and corrigenda that have been implemented. Subclause A.5 contains the global statement of conformance. Subclauses A.6 onwards contain tables in which the supp
29、lier specifies details of the implementation options chosen. A.2.2 Symbols, terms and abbreviations A.2.2.1 Introduction Notations have been introduced in order to reduce the size of tables in the PICS profortna. These have allowed the use of multi-column layout where the columns are headed Status,
30、and Support. The definition of each are given below. Additionally, the following definitions apply: A.2.2.1.1 (PICS) item: A row in a PICS proforma table. A.2.2.1.2 (PICS) question: The question to be answered in the intersection of a PICS item and either a support column (i.e. “Is this item support
31、ed in the context applying to this table and column”) or supported values column (i.e. What values are supported for this item in the context applying to this table and column”) in a PICS proforma table. A.2.2.1.3 status (value): An allowed entry in the status column for an item in a PICS profotma t
32、able. l) Copyright release for PICS proforma: Users of this Recommendation I International Standard may freely reproduce the PICS proforma in this annex so that it can he used for its intended purpose and may further publish the completed PICS. ITU-T Rec. X.249 (1995 E) 3 Copyright International Org
33、anization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:39:31 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO/IRC 9072-3 : 19% (E) A.2.2.1.4 (support) answer: An allowed entry in t
34、he support or supported values columns for an item in a PICS, in answer to a PICS question. A.2.2.2 Prerequisite notation If a predicate applies to a whole PICS proforma table, a prerequisite line may be specified in front of the table to which it applies. A prerequisite line takes the form: Prerequ
35、isite: The meaning of such a line is that if is True, then the table applies, else it is not-applicable. A.2.2.3 Item numbering Each line within the PICS proforma which requires implementation detail to be entered is given an item number in the first column. The item number column provides a means o
36、f uniquely referencing each possible answer within the PICS proforma. Such referencing is necessary for specifying predicates, conditional expressions, test suite parameters, and test suite selection expressions. The means of referencing individual answers is to specify the following sequence: a) If
37、, and only if, the reference is being made from another Specification, then start with an unambiguous identifier for the relevant ICS proforma specification, enclosed in parentheses - this identifier is stated in the PICS proforma specification and is updated whenever the PICS proforma is updated -
38、it is recommended that this identifier should be the relevant Specification number and year of publication, as is used in a Normative References clause, and this is the default for such identifiers. b) The number of the relevant table or, if the tables are not numbered, of the smallest subclause enc
39、losing the relevant table. c) A solidus character, Y. d) The item number of mnemonic reference to the item, to identify the row in which the answer appears. e) If, and only if, more than one question occurs in the row identified by the item number or mnemonic reference, then each possible answer is
40、implicitly labelled a, b, c, etc. from left to right, and this letter is appended to the sequence, prefixed by a solidus character (7”) if a mnemonic reference is used. If mnemonic references are specified and each uniquely identify an item in the PICS proforma, then entries b) and c) in the above s
41、equence may be omitted. A.2.2.4 Status column The Status column indicates the level of support required for conformance to CCITT Rec. X.229 I ISO/IEC 9072-2. The values are as follows: m 9 0 0.n The item is mandatory. The capability is required to be implemented. The item is optional. The capability
42、 may be implemented. The item is a mutually exclusive or selectable option among a set (where n is the number which identifies the group of optional items). The requirement for each numbered group is specified as part of the relevant tables. , C The item is conditional. The requirement on the capabi
43、lity depends on the selections of other optional or conditional items. The status (mandatory, optional, prohibited, or non-applicable) depends on the evaluation of a predicate or a conditional expression which is specified as part of the relevant tables or as a predicate. cn The item is conditional
44、(where n is the number which identifies the condition which is applicable). The definitions for conditional statements are given as part of the relevant tables. X The item is prohibited or excluded. There is a requirement not to use this capability in the given context. n/a The item is not applicabl
45、e. The capability is not applicable in the given context. ITU-T Rec. X.249 (1995 E) Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=NASA Technical Standards 1/9972545001 Not for Resale, 04/20/2007 06:39:31 MDTNo reproduction or networking perm
46、itted without license from IHS -,-,- ISO/IEC 9072-3 : 1996 (E) A.2.2.5 Support column The Support column shall be completed by the supplier or implementor to indicate the level of implementation of each capability. The proforma has been designed such that the only entries required in the Support col
47、umn are: Y Yes, the capability is implemented in conformance to CCIIT Rec. X.229 I ISO/IEC 9072-2. N No, the capability is not implemented. 3 No answer required - it is unnecessary to answer this question with a yes or a no because the question has a status value of non-applicable. A.2.2.6 Deftition
48、 of support An operation class is said to be supported if the implementation is able to operate in the mode defined for that operation class. A protocol element is said to be supported for origination if the implementation is able to generate it under some circumstances (either automatically or beca
49、use the end user explicitly requires a related service). A protocol element is said to be supported for reception if it is correctly interpreted, handled and, when required, made available to the end user. A.2.2.7 Predicate definitions A predicate is an explicit reference to a PICS proforma YES/NO entry, using the format defined in A.2.2.4.