ITU-T X 248 FRENCH-1995 INFORMATION TECHNOLOGY C OPEN SYSTEMS INTERCONNECTION C RELIABLE TRANSFER PROTOCOL IMPLEMENTATION CONFORMANCE STATEMENT (PICS) PROFORMA《信息技术 开放系统互连 可靠传递 协议实.pdf

1、UNION INTERNATIONALE DES TLCOMMUNICATIONS5)4 4 8 SECTEUR DE LA NORMALISATIONDES TLCOMMUNICATIONSDE LUIT(11/95)2 3%!58 $% $/ %3 %4 #/-5.)#!4)/.%.42% 3934 -%3 /56%243).4%2#/%8)/. $%3 3934 -%3 /56%243 grs diffremment; de niveaux de complexit diffrents; sappuyant sur diverses technologies.Llment de serv

2、ice de transfert fiable (RTSE, reliable transfer service element) est un lment du service dapplicationqui est couramment utilis dans un certain nombre dapplications. Il permet dassurer le transfert fiable des units dedonnes protocolaires dapplication (APDU, application protocol data units) entre sys

3、tmes ouverts. Il fournit unmcanisme indpendant de lapplication qui permet la reprise aprs dfaillance de la communication ou du systmeterminal en minimisant le volume de retransmission.Pour valuer la conformit dune application particulire, il est ncessaire de disposer dune description des capacits et

4、des options qui ont t incluses. Une telle description est appele dclaration de conformit dinstance de protocole(PICS, protocol implementation conformance statement).La prsente Recommandation | Norme internationale contient le formulaire PICS pour le protocole de transfert fiable, telquil est dfini d

5、ans la Rec. X.228 du CCITT (1988) | ISO/CEI 9066-2:1989.ISO/CEI 9066-3 : 1996 (F)Rec. UIT-T X.248 (1995 F) 1NORME INTERNATIONALEISO/CEI 9066-3 : 1996 (F)Rec. UIT-T X.248 (1995 F)RECOMMANDATION UIT-TTECHNOLOGIES DE LINFORMATION INTERCONNEXION DES SYSTMESOUVERTS TRANSFERT FIABLE: FORMULAIRE DE DCLARAT

6、IONDE CONFORMIT DINSTANCE DE PROTOCOLE1 Domaine dapplicationLa prsente Recommandation | Norme internationale contient le formulaire de dclaration de conformit dinstance deprotocole (PICS) pour le protocole de transfert fiable qui est spcifi dans la Rec. X.228 du CCITT (1988) |ISO/CEI 9066-2:1989. Ce

7、 formulaire est conforme aux prescriptions applicables et respecte les directives donnes dansla Rec. UIT-T X.296 | ISO/CEI 9646-7. On trouvera les dtails concernant lutilisation de ce formulaire dans la prsenteRecommandation | Norme internationale.Le fournisseur dune application quil dclare conforme

8、 aux spcifications de la Rec. X.228 du CCITT | ISO/CEI 9066-2doit remplir un exemplaire du formulaire PICS reproduit lAnnexe A et fournir les renseignements ncessaires pourpermettre didentifier le fournisseur et lapplication.2 Rfrences normativesLes Recommandations et Normes internationales suivante

9、s contiennent des dispositions qui, par suite de la rfrence quiy est faite, constituent des dispositions valables pour la prsente Recommandation | Norme internationale. Au moment dela publication, les ditions indiques taient en vigueur. Toutes Recommandations et Normes sont sujettes rvision etles le

10、s parties prenantes aux accords fonds sur la prsente Recommandation | Norme internationale sont invites rechercher la possibilit dappliquer les ditions les plus rcentes des Recommandations et Normes indiques ci-aprs.Les membres de la CEI et de lISO possdent le registre des Normes internationales en

11、vigueur. Le Bureau de lanormalisation des tlcommunications de lUIT tient jour une liste des Recommandations UIT-T en vigueur.2.1 Recommandations | Normes internationales identiques Recommandation UIT-T X.200 (1994) | ISO/CEI 7498-1:1994, Technologies de linformation Interconnexion des systmes ouvert

12、s Modle de rfrence de base: le modle de rfrence de base.2.2 Paires de Recommandations | Normes internationales quivalentes par leur contenu technique Recommandation UIT-T X.218 (1993), Transfert fiable: modle et dfinition du service.ISO/CEI 9066-1:1989, Systmes de traitement de linformation Communic

13、ation de texte Transfertfiable Partie 1: Modle et dfinition du service. Recommandation X.228 du CCITT (1988), Transfert fiable: spcification du protocole.ISO/CEI 9066-2:1989, Systmes de traitement de linformation Communication de texte Transfertfiable Partie 2: Spcification du protocole. Recommandat

14、ion UIT-T X.290 (1995), Cadre gnral et mthodologie des tests de conformitdinterconnexion des systmes ouverts pour les Recommandations sur les protocoles pour les applicationsde lUIT-T Concepts gnraux.ISO/CEI 9646-1:1994, Technologies de linformation Interconnexion de systmes ouverts Cadregnral et mt

15、hodologie des tests de conformit OSI Partie 1: Concepts gnraux. Recommandation UIT-T X.296 (1995), Cadre gnral et mthodologie des tests de conformit OSI pourles Recommandations sur les protocoles pour les applications de lUIT-T Dclarations de conformitdinstance.ISO/CEI 9646-7:1995, Technologies de l

16、information Interconnexion de systmes ouverts (OSI) Essais de conformit Mthodologie gnrale et procdures Partie 7: Dclarations de conformit desmises en uvre.ISO/CEI 9066-3 : 1996 (F)2 Rec. UIT-T X.248 (1995 F) Recommandation X.419 du CCITT (1992), Systmes de messagerie Spcifications de protocole.ISO/

17、CEI 10021-6:1990, Technologies de linformation Communication de texte Systmes dchangede texte en mode message Partie 6: Spcification de protocole.2.3 Autres rfrences Recommandation UIT-T X.482 (1996), Systmes de messagerie Formulaire de dclaration deconformit dune instance de protocole P1. Recommand

18、ation UIT-T X.483 (1996), Systmes de messagerie Formulaire de dclaration deconformit dune instance de protocole P3. Recommandation UIT-T X.484 (1996), Systmes de messagerie Formulaire de dclaration deconformit dune instance de protocole P7.3 DfinitionsLa prsente Recommandation | Norme internationale

19、 utilise les termes suivants dfinis dans la Rec. UIT-T X.290 |ISO/CEI 9646-1:a) dclaration de conformit dinstance;b) formulaire de dclaration de conformit dinstance;c) dclaration de conformit dinstance de protocole (PICS);d) formulaire PICS.La prsente Recommandation | Norme internationale utilise ga

20、lement les termes suivants dfinis dans la Rec. X.419du CCITT | ISO/CEI 10021-6:a) mts-transfer (transfert du MTS);b) mts-transfer-protocol (protocole de transfert du MTS);c) mts-transfer-protocol-1984 (protocole de transfert du MTS 1984);d) mts-reliable-access (accs fiable MTS);e) mts-forced-reliabl

21、e-access (accs fiable impos MTS);f) ms-reliable-access (accs fiable MS).4 AbrviationsPour les besoins de la prsente Recommandation | Norme internationale, les abrviations suivantes sont utilisesICS Dclaration de conformit dinstance (implementation conformance statement)PICS Dclaration de conformit d

22、instance de protocole (protocol implementation conformance statement)5 ConformitUn formulaire PICS conforme doit tre techniquement quivalent au formulaire PICS publi par lUIT-T | ISO/CEI etdoit en conserver la numrotation et lordre des articles.Un formulaire PICS qui obit aux dispositions de la prse

23、nte Recommandation | Norme internationale doit:a) dcrire une application qui obit aux dispositions de la Rec. X.228 du CCITT | ISO/CEI 9066-2;b) tre un formulaire PICS conforme, qui a t rempli selon les rgles donnes au A.2;c) contenir les renseignements ncessaires pour permettre didentifier de faon

24、univoque le fournisseur etlapplication.ISO/CEI 9066-3 : 1996 (F)Rec. UIT-T X.248 (1995 F) 3Annexe AFormulaire de dclaration de conformit dinstance de protocole (PICS)pour le protocole de transfert fiable1)(Cette annexe fait partie intgrante de la prsente Recommandation | Norme internationale)A.1 Ide

25、ntification of PICS proforma corrigendaThe supplier of the PICS proforma shall identify any corrigenda (i.e. Technical Corrigenda or equivalent) to thepublished proforma that have been applied. Suppliers of the proforma should modify the proforma, or attach relevantadditional pages in order to apply

26、 the corrigenda, and then record the application of the corrigenda in the table below.A.2 InstructionsA.2.1 Purpose and structure of the proformaThe purpose of this PICS proforma is to provide suppliers of implementations of CCITT Rec. X.228 | ISO/IEC 9066-2with a consistent means of stating which c

27、apabilities 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 forwhich an implementation choice is allowed. Items are also provided for major mandatory capabilities for which noimplementation choice is allowed

28、. Each item includes an item number, an item description, a status value specifying thesupport requirement, and room for a support answer to be provided by the supplier.This subclause provides general information and instructions for completion of the proforma.Subclause A.3 is for identification of

29、the implementation.Subclause A.4 contains the means of specifying, at a high level, the protocol and corrigenda that have beenimplemented.Subclause A.5 contains the global statement of conformance.Subclauses A.6 onwards contain tables in which the supplier specifies details of the implementation opt

30、ions chosen.A.2.2 Symbols, terms and abbreviationsA.2.2.1 IntroductionNotations have been introduced in order to reduce the size of tables in the PICS proforma. These have allowed the use ofmulti-column layout where the columns are headed Status, and Support. The definition of each are given below.A

31、dditionally, 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 supported in the context applying to this table and column”) or

32、supported values column (i.e. “Whatvalues are supported for this item in the context applying to this table and column”) in a PICS proforma table._1)Droits de reproduction du formulaire PICS: les utilisateurs de la prsente Recommandation | Norme internationale sont autoriss reproduire le formulaire

33、PICS de la prsente annexe pour utiliser celui-ci conformment son objet. Ils sont galement autoriss publier le formulaire une fois celui-ci complt.Item ITU-T Rec. X.248 (1995) | ISO/IEC 9066-3:19961 Corr.:2 Corr.:3 Corr.:4 Implementors Guide version:ISO/CEI 9066-3 : 1996 (F)4 Rec. UIT-T X.248 (1995 F

34、)A.2.2.1.3 status (value): An allowed entry in the status column for an item in a PICS proforma table.A.2.2.1.4 (support) answer: An allowed entry in the support or supported values columns for an item in a PICS, inanswer to a PICS question.A.2.2.2 Prerequisite notationIf a predicate applies to a wh

35、ole PICS proforma table, a prerequisite line may be specified in front of the table to which itapplies. A prerequisite line takes the form:Prerequisite: 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 numberingEach line within the PICS pr

36、oforma which requires implementation detail to be entered is given an item number in thefirst column. The item number column provides a means of uniquely referencing each possible answer within the PICSproforma. Such referencing is necessary for specifying predicates, conditional expressions, test s

37、uite parameters, and testsuite selection expressions.The means of referencing individual answers is to specify the following sequence:a) If, and only if, the reference is being made from another Specification, then start with an unambiguousidentifier for the relevant ICS proforma specification, encl

38、osed in parentheses this identifier is stated inthe PICS proforma specification and is updated whenever the PICS proforma is updated it isrecommended that this identifier should be the relevant Specification number and year of publication, asis used in a Normative References clause, and this is the

39、default for such identifiers.b) The number of the relevant table or, if the tables are not numbered, of the smallest subclause enclosing therelevant table.c) A solidus character, “/”.d) The item number of mnemonic reference to the item, to identify the row in which the answer appears.e) If, and only

40、 if, more than one question occurs in the row identified by the item number or mnemonicreference, then each possible answer is implicitly labelled a, b, c, etc. from left to right, and this letter isappended to the sequence, prefixed by a solidus character (“/”) if a mnemonic reference is used.If mn

41、emonic references are specified and each uniquely identify an item in the PICS proforma, then entries b) and c) inthe above sequence may be omitted.A.2.2.4 Status columnThe Status column indicates the level of support required for conformance to CCITT Rec. X.228 | ISO/IEC 9066-2.The values are as fo

42、llows:m The item is mandatory. The capability is required to be implemented.o The item is optional. The capability may be implemented.o.n The item is a mutually exclusive or selectable option among a set (where n is the number whichidentifies the group of optional items). The requirement for each nu

43、mbered group is specified as partof the relevant tables.c The item is conditional. The requirement on the capability depends on the selections of otheroptional or conditional items. The status (mandatory, optional, prohibited, or non-applicable)depends on the evaluation of a predicate or a condition

44、al expression which is specified as part of therelevant The item is conditional (where n is the number which identifies the applicable condition). Thedefinitions for conditional statements are given as part of the relevant tables.d The default value. When absent in the PDU, both originator and rece

45、iver shall interpret it as havingthe default value specified in CCITT Rec. X.228 | ISO/IEC 9066-2.ISO/CEI 9066-3 : 1996 (F)Rec. UIT-T X.248 (1995 F) 5x The item is prohibited or excluded. There is a requirement not to use this capability in the givencontext.n/a The item is not applicable. The capabi

46、lity is not applicable in the given context.A.2.2.5 Support columnThe Support column shall be completed by the supplier or implementor to indicate the level of implementation of eachcapability. The proforma has been designed such that the only entries required in the Support column are:Y Yes, the ca

47、pability is implemented in conformance to CCITT Rec. X.228 | ISO/IEC 9066-2.N No, the capability is not implemented. No answer required it is unnecessary to answer this question with a yes or a no because thequestion has a status value of non-applicable.A.2.2.6 Definition of supportA capability is s

48、aid to be supported for origination if the implementation is able: to generate the corresponding service parameters (either automatically or because the end-user explicitlyrequires that capability), and receive the corresponding service parameters sent in response from the peersystem; and to interpret, handle and when required make available to the end user the corresponding serviceparameters.A capability is said to be supported for reception if the implementation is able: to receive the corresponding service parameters fr