1、BRITISH STANDARD Information technology - International Standardized Profiles TB, TC, TD and TE - Connection-mode Wansport Service over connection-mode Network Service Part 12 Definition of profile TC51, provision of the OS1 connection-mode Transport Service using the OS1 connection-mode Network Ser
2、vice in an End System attached to a CSWCD LAN The European Standard EN ISP 10609-12 : 1996 has the status of a British Standard ICs 35.100.05 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN ISP 10609-12 : 1997 Imo yiomting ISODEC ISP 10609- 12 : Amendment No. 1 to BS 199
3、4 and Amendment No. 2 (renumbers BS as BS EN ISP 10609-12 I 1997) BS EN ISP 10609-12 : 1997 Issue 2, May 1997 Committees responsible for this British Standard The preparation of tkts British Standard was entrusted to Technical Committee IST/6, upon which the following bodies were represented British
4、 Computer Society British Telecommunications plc CCTA (the Government Centre for Information Systems) Digital Equipment Co. Ltd. IBM United Kingdom Ltd. Institution of Electrical Engineers International Computers Limited Logica UK Ltd. Nine Wes Computer Systems Ltd. Rank Xerox (VK) Ltd. This British
5、 Standard, having been prepared under the direction of the Information Systems Technology Assembly, was published under the authority of the Standards Board and comes into effect on 15 July 1995 O BSI 1997 Amendments issued since publication I Date Amd. No. I Text affected 9578 Indicated by a sideli
6、ne in the margin IMaylS7 I The following BSI references relate to the work on this standard Committee reference ISTG Draft for comment 92/68842 DC ISBN O 680 24344 3 STD-BSI BS EN ISP LObOS-12-ENGL 1797 Lb2LibbS ObLb88 504 Issue 1, May 1997 BS EN ISP 10609-12 : 1997 Issue Summary of pages The follow
7、ing table identifies the current issue of each page. Issue 1 indicates that a page has been introduced for the first time by amendment. Subsequent issue numbers indicate an updated page. Vertical sidelining on replacement pages indicates the most recent changes (amendment, addition, deletion). Page
8、Page Front cover Inside front cover a b i EN cover page iib ISOAEC cover page 11 11 2 2 1 blank 2 blank 1 1 origin: iii iv vi 1 2 3 4 V I Insic- back cover original Il Back cover Charagr. of identifier Wherever BS ISOAEC ISP 10609-12 : 1994 appears in this standard, it should be read as BS EN ISP 10
9、609-12 : 1997. Issue Original Original original Original Original original original blank 2 blank O BSI 1997 a _ STD-BSI BS EN ISP 1ObOS-12-ENGL 1777 Lb24bb7 ObLbS0 22b M Issue 2, May 1997 BS EN ISP 10609-12 : 1997 National foreword This British Standard has been prepared by Technical Committee IST/
10、6 and is the English language version of EN ISP 10609-12 Infmatwn techrwlogg - International Standardized hf lB, TC, TD and TE - Connecth-mode knsport She over connection-mode Network Service Part 12: Definition of profile TC51, pmvision of the OSI conmtwn-mode knsport Service using the OSI connecti
11、on-mode Network Service in an End System attached to a CSWCD LAN published by the European Committee for Standardization (CEN). It is identical with ISOLEC ISP 10609-12 : 1994 published by the International Organization for StankWon (ISO) and the International Electrotechnical Commission (IEC). It s
12、upersedes DD ENV 41103-3 : 1993, which is withdrawn. This British Standard is published under lhe direction of the Information Systems Technology Assembly whose Technical Committee IST/6 has the responsibility to: - aid enquirers to understand the text; - present to the resporaihle international com
13、mittee any enquiries on interpretation, or proposals for change, and keep UK interests informed; - monitor related intedonal and European developments and promulgate them in the UK. NOTE. International and European Standards, as well as overseas standards, are available from Customer Services, BSI,
14、389 Chiswick High Road, London W4 4AL. Compliance with a British Standard does not of itself confer immunity from legal obligations. O BSI 1997 1 STD.BS1 BS EN ISP LObOS-12-ENGL 1777 m 1b2Libb7 ObLb891 1b2 m * rn * EUROPEAN flmm NORME EUROPENNE EUROP - European Workshop for Open Systems (EWOS); - Op
15、en Systcms Environment Implementors Workshop (OIW). ISO/iEC ISP 10609 consists of several parrs, undcr the general title Igormatwn technology - Internuiional Stanurired Profiles TB, TC, TD and TE - Connection-mode Transport Service over connection-mode Network Service: - Part I: Subnetwork-type inde
16、pendent requirements for Group TB - Part 2: Subnetwork-type independent requirements for Group ZC - Part 3: Subnetwork-type independent requirements for Group TD - Part 4: Subnetwork-type independent requirements for Group TE - Part 5: Definition of profiles TBlllllTB1121 Part 6: Definition of profi
17、les TC11Il/TC1121 Part 7: Definition of profles TDI IIIITD1121 Part 8: Definition of profiles TE1 Il 1 ITEI I21 Part 9: Subnetwork-type dependent requirements for Network Layer, Dura Link Layer and Physical Layer concerning permanent access to a packet switched data network using virtual calls - - -
18、 - iii STD=BSI BS EN ISP LOb07-22-ENGL 1777 W Lb24bb7 Oblb89b 71.19 ISO/IEC ISP 10609-12: 1994(E) - Pari 10: LAN subneiwork-dependeni# rncdi(i-indepen the provision of the OS1 connec- tion-mode Transport Service using the OS1 connection-mode Network Service in an End System attached to a CSMNCD LAN
19、subnetwork. 1.2 Position within the taxonomy The taxonomy o proiles is defined in ISO/IEC TR 1oooO-2. This part of ISObEC ISP 10609 defines the profile: TC51 Connection-mode Transport Service over connection-mode Network Service over CSMNCD LAN subnetworks 1.3 Scenario Figure i illustrates the confi
20、gurations of systems to which the TC51 profile is applicable. 1 STDmBSI BS EN ISP LObOS-LZ-ENGL 1777 1bZ4bb9 ObLb899 453 TC5 1 Reference End System ISO/IEC ISP 10609-12:1994(E) I Remote CSMA/CD End System LAN * Transport Layer Network Layer Data Link Layer Physical Layer Figure 1 - Scenario of appli
21、cability of the TC51 proCile ISODEC 8073 ISODEC 8878 ISO/IEC 8208 JSO/IEC 8881 IS0 8802-2 type 2 ISODEC 8802-3 Medium Access Control ISO/IEC 8802-3 Physical Layer The TC51 profile specifies the required functions from the supporting protocol stack shown in figure 2 below. Figure 2 - Protile protocol
22、 stack for a TC51 End System This profile does not specify the required functions for relays. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this pan of ISO/IEC ISP 10609. At the time of publication, the editions indi
23、cated were valid. All documents are subject to revision, and parties to agreements based on this part of ISO/IEC ISP 10609 are warned against automatically applying any more recent editions of the documents listed below, since the nature of references made by ISPs to such documents is that they may
24、be specific to a particular edition. Members of LEC and IS0 maintain registers of currently valid International Standards and ISPs, and -T maintains published editions of its current Recommendations. ISO/IEC TR 1oooO-1 : 1992, INormation technology - Framework and taxonomy of International Standardi
25、zed Profiles - Parr I: Framework 2 ISOIIEC ISP 10609-12:19!M(E) ISOnEC TR IXXX)-S : 1992, Information technology - Framework and taxonomy of International Standardized Profiles - Part 7: Taxonomy of OS1 Profiles iSO/IEC ISP lW-2 : 1992, Information technology - International Slandurdized Profiles TB
26、, TC, TD and TE - Connection-mode runsport Service over connection-mode Network Service - Part 2: Subnetwork-type independent requirements for Group TC ISOPEC ISP 10609-10 : 1994, Informution echnology - International Standardized Profiles TB, TC, TD and TE - Connection-mode Transport Service over c
27、onnection-mode Network Service - Part 1 O: LAN subnetwork- b) implcmenl all the features identified as requirements in the ISPICS requirements list in annex A. 5.2 Dynamic conformance requirements An implementation conforming to ihe profile defined in this part of ISO/IEC ISP 10609 shall: a) carry o
28、ut the supported functions according to the applicable dynamic conformance requirements of parts 2, 10 and 11 of ISO/iEC ISP 10609; b) behave in accordance with the requirements of the ISPICS requirements list in annex A. 3 STD-BSI BS EN ISP LObOS-12-ENGL 1797 LbZLibbS ObLbSOL 931 ISO/IEC ISP 10609=
29、12:19!M(E) Annex A (norma tive) ISPICS requirements list A.l General options of the profile There are no general options in this profile. A3 Standards selected and combined in the profile This profde makes use of the following base standards: - ISO/IEC8073 - ISO/IEC 8878 - ISO/IEC8208 - ISO/IEC 8881
30、 - ISO8802-2 - ISO/IEC8802-3 A.3 Constraints on base standards A conformant implementation of this profile shall: a) meet all subnetwork-type independent constraints on operaiion of ISO/IEC 8073 as specified in the ISPICS requirements list in ISO/IEC ISP 10609-2; b) meet all subnetwork-type dependen
31、t constraints on the operation of ISO/IEC 8878, ISO/IEC 8208, ISODEC 8881, IS0 8802-2 and ISODEC 8802-3 which are specified in the ISPICS repuirements lists in IsO/IEC ISP 10609-10 and ISO/IEC ISP 10609-11. 4 STD-BSI BS EN ISP LObO7-12-ENGL 1777 U lbEibb7 ObLb902 878 BS EN ISP 10609-12 : 1997 BSI 38
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