1、- STD-BSI BS EN ISP LObOS-2-ENGL 1777 LbZibb7 UbL5080 132 BRITISH STANDARD Information technology - International Standardized Profiles TB, TC, TD and TE - Connection-mode Bansport Service over connection-mode Network Service Part 2. Subnetwork-type independent requirements for Group TC * * u2 The E
2、uropean Standasd EN ISP 106092 : 1996 hzs the status of a British Standard ICs 35.100.05 NO COPYING WITHOUT BSI PERMISSION EXCEPT AS PERMITTED BY COPYRIGHT LAW BS EN ISP 10609-2 : 1997 BS ISOnEC 10609-2 : 1992 renudered, incorpomt?lg amendment No. 1 BS EN ISP 10609-2 : 1997 bue 2, May 1997 AmdNo. Da
3、te 9470 May 1997 Committees responsible for this British Standard Text affected Indicated by a sideline in the margin The preparation of this British Standard was entrusted by the Information Systems Technology Standards Policy Committee (IST/-) to Technical Committee IST/6, upon which the following
4、 bodies were represented: British Computer Society British Telecommunications plc Digitai Equipment Co. Ltd. HM Tkeasury (Centrai Computer and Telecommunications Agency) IBM United Kingdom Ltd. Information Systems Committee of the Universities Funding Council Intemational Computers Limited Logica UK
5、 Ltd. Muustry of Defence Rank Xerox Ltd. Swift Project Consortium This British Standard, having been prepared under the direction of the Information Systems Technology Standards Policy Committee, was published under the authority of the Standards Board and comes into effect on 15 January 1993 Q BSI
6、1997 The foliowing BSI references relate to the work on this standard Committee reference IST/6 Draft for comment 90/66800 DC ISBN O 680 21684 9 STD-BSI BS EN ISP LObO7-2-ENGL 1977 1b2ibbS Ob15082 TO5 Issue 1, May 1997 BS EN ISP 10609-2 : 1997 Summary of pages The following table identies the curren
7、t issue of each page. Issue 1 indicates that a page has been introduced for the fmt time by amendment. Subsequent issue numbers indicate an updated page. Vertical sidelining on replacement pages indicates the most recent changes (amendment, addition, deletion). Page Front cover Inside front cover a
8、b 1 ll EN cover page iib IS0 cover page iii iv 11 V issue 2 2 1 blank 2 blank 1 1 Original Original Original Original original Inside back cover Back cover Change of identifier Wherever BS ISO/IEC ISP 10609-2 : 1992 appears in this standard, it should be read as BS EN ISP 10609-2 : 1997. issue Origi
9、nal Original Original original original Original original Original Originai blank 2 O BSI 1997 a STD-BSI BS EN ISP 1ObOS-2-ENGL 1777 Lb29bbS Ob15083 791 = Issue 2, May 1997 BS EN ISP 10609-2 : 1997 National foreword This British Standard has been prepared by Technical Committee IST/6 and is the Engi
10、ish ianguage version of EN ISP 10609 Infomtwn tschnology - Intemational Standan/ked prof.iles TB, TC, TD and TE - Conmth-mo - present to the responsible international committee any enquiries on interpretation, or proposals for change, and keep UK interests informed; - monitor related international a
11、nd European developments and promdgate them intheuK. NOTE. International and European Standards, as well as overseas standards, are available from Customer Services, BSI, 389 Chiswick High Road, London W4 4AL. Compliance with a British Standard does not of itself confer immunity from legal obligatio
12、ns. I O BSI 1997 1 EUROPEAN mmARD NORME EUR0PEE”E mop- Nom EN ISP 10609-2 January 1996 ICs 35.100 Supersedes ENV 41104 : 1987 Descriptors: Circuit networks, data processing, data transfer, information exchange, information interchange, open systems, standard description English version I.nformation
13、technology - International Standardized Profiles TB, TC, TD and TE - Connection-mode Ik.ansport Service over connection-mode Network Service - Part 2: Subnetwork-type independent requirements for Group TC (ISOBEC ISP 10609-2 : 1992) Technologie de ihformation - Profils normaliss internationaux TB, T
14、C, TD et TE - Service de transport en mode connexion sur service de rseau en mode connexion - Partie 2: Spcjcaons indpendantes du type de sous-r - European Workshop for Open Systems (EWOSS); - OS1 Implenientors Workshop (OIW) ISO/IEC ISP 10609 consists of the following parts, under the general title
15、 Information technology - International Standardized Profiles TB, TC, TD and TE - Connection-mode Transport Service over connection-mode Network Service: - Part I: Subnetwork-type independent requirements for Group TB - Part 2: Subnetwork-type independent requirements for Group TC - Part 3: Subnetwo
16、rk-type independent requirements for Group TD - Part 4: Subnetwork-type independent requirements for Group TE - Part 5: Definition of profiles TB 11 ll/TB 1121 iii - STD.BS1 BS EN ISP LOLOS-2-ENGL 1777 1b24bb7 Ob15087 3bT ISOIIEC ISP 10609-2:1992(E) - Part 6: Definition of profiles TC 11 1 lITC1121
17、- Part 7: Definition of profiles TDlllllTDll2l - Part 8: Definition of profiles TE1 11 lITEll21 - Part 9: Subnetwork-type dependent requirements for Network Layer, Data Link Layer and Physical Layer concerning permanent access to a packet switched data network using virtual calls Annexes A and B for
18、m an integral part of this part of ISOIIEC ISP 10609. iv STDeBSI BS EN ISP 10b09-2-ENGL 1997 lhZlbb7 Ob15090 061 IWIEC ISP 10609-2:1992(E) Introduction This part of ISO/IEC ISP 10609 (International Standardized Pmfile) is defined witHn the context a Fuml Standarduaion, in accordance with the ptincip
19、ies specified by ISO/IEC TR 10000-1:1990. The amtexi of Functional Standardization is one part of the overall field of Infomiation Technology (IT) standardization adivRies, covering base standards, profiles, and registration mechanisms. A profile defines a corribination of base standards that cdledi
20、vey pedomi a specific welldefined IT fundion. Profiles standardp etheuse of o and other variations h the base Intemational StandaFds, and prwde a basis for the deveQmmt of uniform, internationally recognized system tests. One of the most ionporani roles for an ISP is to serve as the basis for the de
21、vebpment (by organizations other than IS0 and IEC) of internationally recognized tests and test centres. ISPs are produced not simply to legitimate“ a partiailar d-ni of base standards and options, but b promote real system intemperability. The development and widespread acceptance of tests based on
22、 this and other ISPs is wcial to the cuccesshil realization of this goal. ISCYIEC ISP 10609 consists of several paris, d whidi this is pad 2. ISOIIEC ISP 10609-1, ISCVIEC 10604- 2, 60/IEC 106093 and ISOAEC ISP 106094 specify subnework-type independent recpirements for Group TB, TC, TD and TE profile
23、s, respediveiy. ISO/IEC ISP 10609-5, iso/IEC 10604-6, ISAEC 106097 and ISC IEC ISP 10609-8 define TI3111 1/TB1l2lI TC1 11 1/TBl121, Ti3111 liTD1121 and TE1 11 1flEl121, respectively. ISO/IEC ISP 1009-9 specifies subnetwork-type dependent requirements concerning permanent access to packet switched da
24、ta network using virtual calls. V INTERNATIONAL STANDARDIZED PROFILE ISOAEC ISP 10609-211 992(E) Information technology - International Standardized Profiles TB, TC, TO and TE - Connection-mode Transport Service over connection-mode Network Service - Part 2: Subnetwork-type independent requirements
25、for Group TC 1 scope This part of ISO/IEC ISP 10609 is applicable to end systems concerned with operating in the Open Systems Interconnection(0SI) environment. It specifies a combination of OS1 standards, which collectively pravide the connection-mode Transport Service using the connection-mode Netw
26、ork Service. This part of ISOAEC ISP 1 O609 is applicable to the provision of the connection-mode Transport Service in end systems attached to any type of subnetwork from which the standardized connection-mode Network Service can be made available. Profiles of the Connection-mode Transport Service o
27、ver Connection-mode Network Service are grouped according to their required support of transport protocol class(es). Group TB : Includes transport protocol classes O, 2 and 4 Group TC : Includes transport protocol classes O and 2 Group TO : includes transport protocol class O Group TE : Includes tra
28、nsport protocol class 2 This part of lSO/IEC ISP 10609 specifies the subnetwork-type independent requirements for Group TC. 2 Normative references The following documents contain provisions which, through reference in this text, constitute provisions of this part of ISO/IEC 10609. At the time of pub
29、lication, the editions indicated were valid. All documents are subject to revision, and parties to agreements based on this part of ISO/IEC 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 docu
30、ments, is mat they may be specific to a particular edition. Members of IEC and IS0 maintain registers of currently valid International Standards and ISPs, and CCIlT maintains published editions of its current Recommendations. IS0 8072:1986, Information processing systems - Open Systems Interconnecti
31、on - Transporl service definition. (See also CCIlT Racomrnendation X.214-1988) ISO/IEC 8073:1988, Information processing systems - Open Systems Interconnection - Connection oriented transport protocol specification. (See also CCITT Recommendation X.224-1988) iSO/i EC 8973iAUd. 1 :I 988, Information
32、processing systelns - Open Systems Interconnection- Connection oriented transport protocol specification - Addendum 1:Network connection management sutprotocol. (See also CCITT Recornvendation X224-;9bB; 1 STDOBSI BS EN ISP lObOS-2-ENGL 1997 Lb24bbS Ob15072 754 ICOIIEC ISP 10609-2:1992(E) ISO/IEC 80
33、73/Amd.3:1992, Information processing system-Open Systems Interconnection-Connection ori- ented transport protocol specification-Amendment 3:Protocol implementation conformance statement (PICS) proforma. ISO/IEC 8073/Cor. 1 : 1 990, Information processing systems - Open Systems Interconnection - Con
34、nection oriented transport protocol specification - Technical corrigendum 7. ISO/I EC 8073/Cor .2: 1 990, Information processing systems - Open Systems Interconnection - Connection oriented transport protocol specification - TBchnical corrigendum 2. ISO/IEC 8073/Cor.5:1991, Information processing sy
35、stems - Open Systems Interconnection - Connection oriented transport protocol specification - Technical comgendum 5. IS0 8348:1987, Information processing systems - Data communications - Network service definition. (See also CCIlT Recommendation X.213 - 1988) ISO/IEC ISP 10609-1 :1992, Information t
36、echnology - International Standardized Profile Ts, TC, TD and TE - Connection-mode Transport service over Connection-mode Network Service - Part 1:Subnetwork-type independent requirements for Group TB. 3 Definitions All of the terms used in this part of ISO/IEC ISP 10609 are defined in the reference
37、d base standards (see clause 2). 4 Abbreviations The abbreviations and acronyms used in this part of ISO/IEC ISP 10609 are defined in the referenced base standards (see clause 2). 5 Su bnetwork-type Independent Requirements 5.1 General The requirements stated in this clause apply uniformly to all co
38、nformant end systems, without regard to the type of subnetworks to which those systems might be attached. Additional requirements apply to end systems according to the type of subnetworks to which they are attached; these requirements are specified in subsequent parts of this ISO/IEC ISP 10609. 5.2
39、Transport Layer Requirements This part of ISO/IEC ISP 10609 specifies provision of the connection-modeTiansport Service, as defined by IS0 8072. using classes O and 2 of the connection-mode Transport Protocol, as defined by ISO/IEC 8073 which defines the operations of classes O, 1,2,3 and 4 over the
40、 connection-mode network service, defined in IS0 8348. Annex B contains defect reports, if any, related to ISO/IEC 8073 along with the statement of any consequential requirements for implementations of these profiles. A conforming implementations constraints are given in annex A which defines the IP
41、RL for the Transport protocol. 5.2.1 Static conformance requirements A conforming implementation shall a) satisfy the conformance requirements as stated in iSO/iEC 8073, clause 14 and clause 14 of CCIll Recommendation X.224, b) support the mandatory features for class O and 2, as defined in ISO/IEC
42、8073, 2 t * v, no param cc Called O len lenO STDSBSI BS EN ISP LObOl-2-ENGL 1997 m LbZLibbS ObL5093 890 m ISOIIEC ISP 10609-2:1992(E) c) if it claims to be capable of initiating TC establishment, be capable of demonstrating the sending of a CR TPDU with, 1) class 2 as the preferred class and class O
43、 included in the alternative classes. 2) class O as the preferred class, no NIL NIL notei param NIL NIL note4 NIL NIL invalid Calling O len NIL NIL invalid invalid invalid note2 lem0 invalid invalid note3 cc I - d) if it claims to be capable of responding to a TC establishment attempt, be capable of
44、 demonstrating the acceptance of a CR TPDU with class 2 in the preferred Class parameter, and with class O in the preferred class parameter, e) if it claims to be capable of initiating TC establishment, be capable of 1) transmitting a Called TSAP-ID field in a CR TPDU . 2) when necessary, transmitti
45、ng a Calling TSAP-ID field in a CR TPDU that can convey any one of the Transport Selectors implemented by the system, f) if it claims to be capable of responding to a TC establishment attempt, be capable of 1) transmitting a Calling TSAP-ID fieM in a CC TPDU . 2) when necessary, transmitting a Calle
46、d TSAP-ID field in a CC TPDU that can convey any one of the Transport Selectors implemented by the system, g) class negotiation takes place using the procedures defined in ISOAEC 8073, 6.5.4 and 6.5.4 of CCITT Recommendation X.224 with restrictions as specified in 14.4 (a) of CCITT Recommendation X.
47、224. h) be capable to configure the initial values of TSl and TS2, if implemented. It is strongly recommended that a conformant system should implement and use TS1 and TS2. 5.2.2 Dynamic conformance requirements a) TSAP-ID The implementation shall support remote TSAP-ID parameters of variable size u
48、p to and including 32 octets using any encoding and any value. Locxl T-Selectors shall not exceed 32 octets in length. On receipt of a CR TPDU the absence of a Calling or Called TSPA-ID parameter shall be treated as equivalent to a zero length Calling or Called TSAP-ID parameter. The absence of the
49、CC Calling TSAP-ID parameter on receipt indicates that the value of CC Calling TSAP-ID parameter is equivalent to the value of CR Calling TSAP-ID parameter. The absence of the CC Called TSAP-ID parameter on receipt indicates that the value of CC Called TSAP-ID parameter is equivalent to the value of CR Called TSAP-ID parameter. 3 STD-BSI BS EN ISP LObOS-Z-ENGL 2777 - 2bZLIbb9 0615094 727 ISOIIEC ISP 10609-2:1992(E) b) Option selection on connection establishment The option of non use of explicit flow control in class 2 shall never be pr
