1、STD-BSI BS EN 1922-ENGL 1998 m Lb24bb9 Ob815Lib 217 BRITISH STANDARD - Information technology - Character repertoire and coding for interworking with Telex services The European Standard EN 1922 : 1997 has the status of a British Standard ICs 35.040 BS EN 1922 : 1998 BS EN 1922 : 1998 direction of t
2、he DISC Board, was published under the authority of the Standards Board and comes into effect on 16 February 1998 Amd. No. O BSI 1998 National foreword Text affected This British Standad is the English anguage version of EN 1922 : 1997. It supersedes DD ENV 41504 : 1991 which is withdrawn. The UK pa
3、rticipation in its preparation was entrusted to Technical Committee ISTE, Character Sets and information Coding, which has the responsibility to: - aid enquirers to understand the text; - present to the responsible European committee any enquiries on the interpretation, or proposals for change, and
4、keep the UK interests informed; - monitor related international and European developments and promulgae them in the UK. A list of organizations represented on this committee can be obtained on request to its secretary. Cross-references The British Standards which implement international or European
5、publicalions referred to in this document may be found in the BSI Standards Catalogue under the section entitled Intemationai Standards Correspondence Index, or by using the Find facility of the BSI Standards Eleonic Catalogue. Compliance with a British Standard does not of itself confer immunity fr
6、om legal obligations. Summary of pages This document comprises a hnt cover, an inside fiont cover, the EN titie page, pages 2 to 6, an inside back cover and a back cover. ISBN O 680 28883 8 I I - STD-BSI BS EN 1922-ENGL 1998 m Lb24bb9 Ob154 07T = EUROPEAN sTANDAR;D NO= EUR0PEE”E EUR0PISCE-E NOFUM EN
7、 1922 September 1997 ICs 35.040.70 35.040 Descriptors: Data processing, teleprocessing, information interchange, data transmission, telex, coded character sets, directories, codification English version Mortnation technology - character repertoire and c0du-g for interworkmg with %lex services Techno
8、logies de linformation - Rpertoire des Informationstechnik - Zeichenvorrat und Coierung caracteres et codage pour linteraction avec les services tlex fr die Zusammenarbeit mit Telex-Diensten This European Standard was approved by CEN on 15 August 1997. CEN members are bound to comply with the CENICE
9、NELEC Internal Regulations which stipulate the conditions for giving this European Standard the status of a national standard without any alteration. Up-to-date lists and bibliographical references concerning such national standards may be obtained on application to the Central Secretariat or to any
10、 CEN member. This European Standard exists in three official versions (English, French, German). A version in any other language made by translation under the responsibility of a CEN member into its own language and notified to the Centsai Secretanat has the same status as the official versions. CEN
11、members are the national standards bodies of Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, Italy, Luxembourg, Netherlands, Norway, Portugal, Spain, Sweden, Switzerland and United Kingdom. European Committee for Standardization Comitk Europen de Normai
12、isation Europisches Komitee fur Normung Central Secretariat: rue de Stassart 36, B-1060 Brussels 01997 CEN All rights of exploitation in any form and by any means reserved worldwide for CEN national Members. Ref. No. EN 1922 : 1997 E Page 2 EN 1922 : 1997 Foreword This hpean Standard has been prepar
13、ed by khnical committee CEN/IY= 304, Character Set Technology, the secretariat of which is held by STRI. This European Standard supersedes ENV 41504 : 1990 (rawn up by CEN/CENELEC/lT/ WWSC). This European Standard shall be given the status of a national standard, either by publication of an identica
14、l text or by endorsement, at the latest by March 1998, and conflicting national standards shall be wihdrawn at the latest by March 1998. This standard is available in English and German o*. According to the CENKENELEC Inted Regulations, the national standards organizations of the following counries
15、are bound to implement this European Standard: Austria, Belgium, Czech Republic, Denmark, Finland, France, Germany, Greece, Iceland, Ireland, I*, Luxembourg, Netherlands, Norway, Pow, Spain, Sweden, Switzerland and the United Kingdom. Contents Foreword 1 Scope 2 Normative references 3 Defitions 4 De
16、scription 6 Conformance 6.1 Conformance of information 6.2 Conformance of devices 6.2.1 General 6.2.2 Device description 6.2.3 Originating devices 6.2.4 Receiving devices 6 Repertoire description 6.1 Repertoire options 6.2 Graphicckaracters 6.2.1 Lajn graphic repertoire 6.2.2 Greek letter case 6.3 C
17、onml functions 7 Codingmethods 7.1 Coding methods for Latin repertoire 7.2 Coding methods for Latin and Greek repertoire 7.3 Coding methods for control characters 7.4 16/32 coding environments 8 Identifcation of options Annexes A (normative) Extended repdoire for B interchange nationai or private us
18、e (informative) Application to Latin and Greek character repertoires page 2 3 3 3 3 4 4 4 4 4 4 4 4 4 4 4 5 5 5 5 5 5 O BSI 1998 * 2 1 scope This European Standard specifies the graphic character repertoire and control functions relevant for information interchange via Telex services. It is intended
19、 to be used with and identified within other European functional standards that spec strings of coded characters for the interchange of coded information between information processing systems (IPS) via Telex services. This standard specifies two alternative options for graphic character repertoires
20、: - option A for Latin graphic chasacters; and - option B for Latin and Greek graphic characters. NOTE. The assignment of characters to three of the code positions is outside the scope of this standard. Such assignment is subject to national or private agreement. 2 Normative references This European
21、 Standard incorporates by dated or undated reference, provisions from other publications. These normative references are cited at the appropriate places in the text and the publications are listed hereafter. For dated references, subsequent amendments to or revisions of any of these publications app
22、ly to this European Standard only when incorporated by amendment or revision. For undated references the Mest edition of the publication referred to applies. prEN 1923 ISOIEC 429 ISOIEC 88541 ISOrnC 8859-7 ISOIEC 106461 ITU-T Recommendation S.l, 1993 ELOT 1095 Eumpean character repertoires and their
23、 coding - 8-bit single-byte coding Infomzatwn technology - Control functions for coded churackr sets Infomzatwn processing - 8-bit single-byte coded graphic chamtemets - Part 1: Latin alphabet No. 1 lnfomnation processhg - 8-bit single-byte coed graphic character sets -Part 7: LatinGreek alphabei In
24、fornth technology - Universal mutipk-octet coded chumter set (UCS) - Part 1: Architechwe a,nd basic multilingual phne Intemational T or - option B : Latin and Greek graphic character repertoire (6.2.1 and 6.2.2). 6.2 Graphic characters 6.2.1 Latin graphic character repertoire The Latin graphic chara
25、cter repertoire consists of - the character space; - the 26 Latin letters A (a) through to Z (z); - the 10 digits zero through to nine; - the foliowing punctuation and miscellaneous Characters: . fullstop; , comma; : colon; ? questionmark., apostrophe; - hyphen-minus; / solidus; = equalssign; ( left
26、parenthesiq ) rightparenthesiq - three unidentified chamcte, see note 1 and annex k + plussign; In this repertoire, no distinction is made between the capital and smd forms of the same letter. However, a biansmitting product - carriage return; - bell. NOTE. The control function WRU (Who are you?) is
27、 used only during the establishment and confirmation of a connection, which is outside the scope of this standard. Repertoire Page 5 EN 1922 : 1997 Code combinations 17 and 23 in ELOT 1095, which have no Greek letters assigned to them, shad not be used in Greek letter case. 7.3 Coding methods for co
28、ntrol functions For the control function repertoire specified in 6.3 in the Telex service the two repertoires can only be used alternately The attached table B.l shows the relevant coding forms in accordance with ELOT 1095. In order to be able to interpret the code combinations correctly, code combi
29、nation number 29 is interpreted as Latin letter shift, and combination number 32 is interpreted as Greek letter shift. This extension of the control combinations is in accordance with 4.7.3 of ITU-T Recommendation S.1:1993. It can also be used by a transformation module to determine whether for the
30、coding of the alphabetic characters the coded representation of the Latin or the Greek letters is to be used. O BSI 1998 Page 6 EN 1922 : 1997 STD-BSI BS EN 1722-ENGL 1778 D lb2Libb9 Ob81553 q57 Table B.l Combination number 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 Latin l
31、etter case A B C D E F G H I J K L M N O P Q R S T U v W X Y Z Greek letter case Names of Greek character! Alpha Beta Psi Delta Epsilon Phi Gamma Eta Iota xi Kappa Lam Fax: 0181 996 7400. BSI offers members an individual updating service called PLUS which ensures that subscribers automatically recei
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