840 标准查询与下载

DS/ISO 7809:1989 信息处理系统.数据通信.高级数据链控制过程.过程等级的统一(本题录取代ISO6159 和ISO6256 )

This International Standard describes the HDLC unbalanced classes of procedures and the HDLC balanced class of procedures for synchronous data transmission. Balanced operation is intended for use in circumstances which require equal control at either end of the data link. Operational requirements are covered in accordance with the overall HDLC architecture. The procedures use the HDLC frame structure defined in ISO 33091) and the HDLC elements of procedures described in ISO 43352). For the unbalanced classes, the data link consists of a primary station plus one or more secondary stations and operates in either the normal response mode or the asynchronous response mode in a point-to-point or multipoint configuration. For the balanced class, the data link consists of two combined stations and operates in the asynchronous balanced mode in a point-to-point configuration. In each class, a basic repertoire of commands and responses is defined, but the capability of the data link may be modified by the use of optional functions.

Data communication. High-level Data Link Control Procedures. Consolidation of classes of procedures

DS/ISO 7776:1989 信息处理系统.数据通信.高级数据链控制过程.X.25LAPB兼容的数据终端设备(DTE )数据链过程说明

This International Standard defines an application of the following HDLC Standards: ISO 3309, ISO 4335, ISO 7478, and ISO 7809. When there is difficulty in the interpretation of a reworded requirement from one of the other International Standards, the original requirement of ISO 3309, ISO 4335, ISO 7478 or ISO 7809 is definitive. It also defines the structure, elements and procedures for the operation of a DTE using the X.25 Level 2 LAPB protocol as specified in CCITT Recommen- dation X.25.1) The procedure is applicable to data interchange between a DTE and a DCE, or between two DTEs. The procedures are defined for use on synchronous, duplex links. Clause 3 describes two frame structures: one for basic (modulo 8) operation and one for extended (modulo 128) operation. Basic (modulo 8) operation is the ISO balanced asynchronous class of procedure with optional functions 2 and 8 (BAC, 2, 8). Extended (modulo 128) operation is the ISO balanced asynchronous class of procedure with optional functions 2, 8, and 10 (BAC, 2, 8, 10). For those DTE/DCE connections that support both basic (modulo 8) operation and extended (modulo 128) operation, the choice is made at subscription-time only. For those DTE/remote DTE connections that support both basic (modulo 8) operation and extended (modulo 128) operation, the choice is made by bilateral agreement. NOTE — The procedure herein described as basic (modulo 8) operation is the only one available in all public data networks. Clause 4 describes the elements of procedures. Some aspects are only operable for the basic (modulo 8) operation and some for the extended (modulo 128) operation. Clauses 5 and 6 describe the single link procedure (SLP) which is derived from the frame structure and the elements of procedures, and an optional multilink procedure (MLP), respectively. The SLP is used for data interchange over a single data link and the MLP is used for data interchange over a multiple of parallel SLPs. An MLP is required if the effects of individual SLP failures are not to disrupt the higher level operation. An MLP can also be used over a single SLP by prior bilateral agreement. For DTE/DCE connections the choice of an MLP operation or not is made at subscription-time only. For DTE/remote DTE connections, the choice is made by bilateral agreement. Where choices among alternative actions are indicated in the procedures, a recommended choice is usually indicated. Unless specifically stated otherwise, the choice of action does not affect interoperability with other implementations of this International Standard although efficlency of operation may be affected. Where such choices do affect interoperability, the procedures explicitly state that prior bilateral agreement on the choice of procedure with the remote end is needed. An attempt has been made to minimize such choices consistent with the need to satisfy a broad range of applications. A basic requirement for all implementations of this International Standard is that they be capable of responding, as specified, to any actions taken at the remote end that are permitted by this International Standard (except possibly for those procedures whose use involves prior bilateral agreement).

Information processing systems. Data communications. High-level data link control procedures. Description of the X.25 LAPB-compatible DTE data link procedures

DS/ISO 6936:1989 数据处理.ISO 646和ISO 6937-2与国际电报电话咨询委员会(CITT)国际电报字母表NO.2(ITA2)之间的转换

The International Standard specifies rules for conversion between the 58 characters (including control functions) of the CCITT International Telegraph Alphabet No. 2 (CCITT Recommendation F.1) and the characters of the ISO 646 and ISO 6937-2 coded character sets. This International Standard does not specify whether small or capital letters will be used to represent the alphabetic characters of ITA 2. This International Standard is expected to facilitate interworking between, for example, the international telex service and terminals in data networks in cases where the telex character repertoire is sufficient.

Information processing. Conversion between the two coded character sets of ISO 646 and ISO 6937-2 and the CCITT international telegraph alphabet No. 2 (ITA 2)

DS/ISO 6429:1989 信息处理.ISO7位和8位编码字符集.字符成象装置的附加控制功能

1 This International Standard defines control functions and their coded representations for use in a 7-bit code, an extended 7-bit code, an 8-bit code or an extended 8-bit code, if such a code is structured in accordance with ISO 2022. This International Standard specifies a CO set, a C1 set, control functions derived therefrom and a number of independent control functions. 2 The control functions are intended to be used embedded in character-coded data for interchange with character-imaging devices. A character-imaging device is a device which is capable of receiving a data stream that consists of coded control functions and graphic characters, and is capable of producing character image output, i.e. output that can be read by a human being. The character image output is, in general, produced in the form of one or more rectangular arrays of character positions and lines which are cailed pages. If the device is an input/output device rather than merely an output device, it is atso capable of transmitting a data stream that consists of coded control functions and graphic characters; the transmitted data stream is, in general, composed of a combination of data whtch have been sent to the device and data which have been entered locally into the device, for example by an associated keyboard. In general, the control functions are defined by their effects on a character-imaging input/output device. It is, therefore, necessary to make certain assumptions about the device archi-tecture. These assumptions are as unrestrictive as possible; they are specified in clause 6. In addition to being performed the control functions may need to be represented by a graphic symbol. The structure of this International Standard is open-ended, so that more control functions can be included in future editions. Other International Standards specifying control functions may define more restricted definitions of them than those in this International Standard. 3 The devices to which this International Standard applies can vary greatly from each other depending on the application for which a device has been specifically designed. It is technically and economically impractical for one device to implement all the facilities specified in this International Standard. The intention is that within any type of device only a limited selection of the facilities appropriate to the application will be implemented.

Information processing. Control functions for 7-bit and 8-bit coded character sets

DS/ISO 8859-3:1989 信息处理. 8 位单字节编码图形字符集. 第3部分:拉丁字母表NO.3

This part of ISO 8859 specifies a set of 184 graphic characters identified as Latin alphabet No. 3. This set of graphic characters, the Latin alphabet No. 3, is intended for use in data processing and text applications and may also be used for information interchange. The set contains graphic characters used for general purpose applications in typical office environments in the following languages: Afrikaans, Catalan, Dutch, English, Esperanto, German, Italian, Maltese, Spanish and Turkish. This set of graphic characters is suitable for use in a version of an 8-bit code according to ISO 2022 or ISO 4873. NOTE - ISO 8859 is not intended for use with CCITT-defined Telematic services. If information coded according to ISO 8859 is to be transferred to such services, it will have to conform at the coding interface to their requirements.

Information processing. 8-bit single-byte coded graphic character sets. Part 3: Latin alphabet no. 3

DS/ISO 8859-4:1989 信息处理.8位单字节编码图形字符集. 第4部分:拉丁字母表NO.4

This part of ISO 8859 specifies a set of 191 graphic characters identified as Latin alphabet No. 4. This set of graphic characters, the Latin alphabet No. 4, is in-tended for use in data processing and text applications and may also be used for information interchange. The set contains graphic characters used for general purpose applications in typical office environments in the following languages: Danish, English, Estonian, Finnish, German, Greenlandic, Lap-pish, Latvian, Lithuanian, Swedish and Norwegian. This set of graphic characters is suitable for use in a version of an 8-bit code according to ISO 2022 or ISO 4873. NOTE - ISO 8859 is not intended for use with CCITT-defined Telematic services. If information coded according to ISO 8859 is to be transferred to such services, it will have to conform at the coding inter-face to their requirements.

Information processing. 8-bit single-byte coded graphic character sets. Part 4: Latin alphabet no. 4

DS/ISO 8859-7:1989 信息处理.8位单字节编码图形字符集.第7部分:拉丁/ 希腊字母表

This part of ISO 8859 defines a set of 185 graphic characters identified as the Latin/Greek alphabet, and specifies the coded representation of each of these characters by means of a single 8-bit byte. None of these characters are "non-spacing". The use of control functions, such as BACKSPACE or CARRIAGE RETURN for the coded representation of com-posite characters is prohibited by ISO 8859.

Information processing. 8-bit single-byte coded graphic character sets. Part 7: Latin/Greek alphabet

DS/ISO 8805:1989 信息处理系统.计算机制图.三维图形核心系统(GKS-3D)功能描述

The standard provides application programs with the capability to define and display 3D graphical primitives, sepcified using 3D coordinates.

Information processing systems. Computer graphics. Graphical Kernel System for three dimensions (GKS-3D) functional description

DS/ISO 9542:1989 信息处理系统. 系统间的通信和信息交换. 用于为提供非连接协议的会合的终端系统至指定路径交换协议的中间系统. 模式网络服务

The standard specifies a protocol which is used by Network Layer entities operating ISO 8473 in End Systems and Intermediate Systems to maintain routing information. The protocol relies upon the provision of connectionless-mode underlying service.

Information processing systems. Telecommunications and information exchange between systems. End system to intermediate system routing exchange protocol for use in conjunction with the protocol for providing the connectionless-mode network servie

DS/INF 46:1989 技术信息领域内的欧洲标准化动议

European initiatives on standardization within the area of information technology

DS/ISO 8327:1989 信息处理系统.开式系统互连.用于对话协议规范的基本连接

Information processing systems. Open systems interconnection. Basic connection oriented session protocol specification

DS/ISO 9036:1987 信息处理.信息交换用的7位编码阿拉伯字符集

1 This International Standard specifies a set of 120 characters (control characters and graphic characters such as letters, digits and symbols) with their coded representation. These characters are mandatory and unchangeable. 2 This character set is primarily intended for the inter-change of information using the Arabic language among data processing systems and associated equipment, and within data communication systems. The need for graphic characters and control functions in data processing has also been taken into account in determining this character set. 3 This character set includes control characters for code extension where its 120 characters are insufficient for particular applications. Procedures for the use of these control characters are specified in ISO 2022. 4 The definitions of some control characters in this Inter-national Standard assume that data associated with them are to be processed serially in a forward direction. When they are included in strings of data which are processed other than serially in a forward direction or when they are included in data formatted for fixed-record processing they may have undesirable effects or may require additional special treatment to ensure that they result in their desired function.

Information processing. Arabic 7-bit coded character set for information interchange

DS/ISO 8859-2:1987 信息处理.8位单字节编码图形字符集.第2部分:拉丁字母表NO.2

This part of ISO 8859 specifies a set of 191 graphic characters identified as Latin alphabet No. 2.

Information processing. 8-bit single-byte coded graphic character sets. Part 2: Latin alphabet No. 2

DS/ISO 8859-1:1987 信息处理.8位单字节编码图形字符集.第1部分:拉丁字母表NO.1

This part of ISO 8859 specifies a set of 191 graphic characters identified as Latin alphabet No. 1.

Information processing. 8-bit single-byte coded graphic character sets. Part 1: Latin alphabet No. 1

DS/ISO 6937/1:1986 信息处理.电文通信用编码字符集.第1部分:总论

This part of ISO 6937 constitutes a general introduction to coded character sets for text communication and, in particular, a) defines terms used in this and subsequent parts of ISO 6937; b) describes the general structure of the text communication code; c) specifies conformance requirements for the coded representation of communicated text at the coding interface. In addition, it gives, in annexes, a) a description of the method used to identify each graphic character and control function defined in this International Standard (annex A); b) a description of some general concepts of text communication (annex B); c) suggestions for equipment conformance requirements (annex C); d) recommendations for fall-back implementations (annex D).

Information processing. Coded character sets for text communication. Part 1: General introduction

DS/ISO 6937/2:1986 信息处理.电文通信用编码字符集.第2部分:拉丁字母字符和非字母的图形字符

This part of ISO 6937 a) defines a repertoire of Latin alphabetic and non-alphabetic characters for the communication of text in European languages; b) specifies coded representations for the graphic characters; c) specifies rules for the definition and use of graphic character subrepertoires, i.e. subsets of the defined character repertoire. It also gives, in annexes, a) definitions of three standard subrepertoires (annex A); b) a summary of the use of non-spacing diacritical marks in combination with the letters of the basic Latin alphabet (annex B); c) a description of the use of the non-spacing underline character (annex C);d) a summary of the use of latin alphabetic characters (annex D); e) recommendations for fall-back presentations (annex E); f) a summary of the differences from CCITT Recommendations S.61 and S. 100 (annex F). NOTE — This part of ISO 6937 does not specify graphic symbols; symbols are shown for the purpose of illustration only. This part of ISO 6937 applies to text as communicated at the coding interface of terminal equipment. It does not necessarily apply to the coded character sets used internally between the coding interface and the input-output devices of the terminal equipment.

Information processing. Coded character sets for text communication. Part 2: Latin alphabetic and non-alphabetic graphic characters

DS/ISO 7498:1985 信息处理系统.开式系统互连.基本参考模型

This International Standard describes the Reference Model of Open Systems Interconnection. It establishes a framework for coordinating the development of existing and future standards for the interconnection of systems and is provided for reference by those standards. This International Standard does not specify services and protocols for OSI. It is neither an implementation specification for systems, nor a basis for appraising the conformance of implementations.

Information processing systems. Open Systems Interconnection. Basic reference model

DS/ISO 1001:1981 信息处理.信息交换用磁带的文件结构和标号

This International Standard specifies the file structure for information interchange, and specifies magnetically recorded labels to identify the files, the file sections and the reels of tape. This International Standard establishes four levels of label formats, blocking structure, and tape-mark relationships on magnetically recorded tapes so that these volumes can be used for information interchange. A recorded magnetic tape intended to be interchanged between systems of potentially different architecture is expected to correspond to one of these four levels. The constraints of this standard may not be needed to apply to data not intended for interchange between systems of potentially different architecture. It is the intention of this International Standard, not that every instance of its implementation should necessarily include all of its provisions, but that each implementation be able to produce and accept volumes that correspond to a level selected by the implementors. Failure to conform to this International Standard may result in loss of the ability to interchange data effectively.

Information processing. Magnetic tape labelling and file structure for information interchange

DS/ISO 4341:1981 信息处理.信息交换用的盒式磁带和磁带卡盘标号及文件结构

This International Standard specifies file structures for data interchange on magnetic tape cassettes. To provide for the range of sophistication in equipment and applications, three systems are specified : a) the basic system, employing only hardware-defined separators to structure the files; b) the compact system, employing special data blocks with information content (labels), which are capable of being recorded using only numeric equipment; c) the extended system, employing the magnetic tape labelling system specified in ISO 1001 together with new labels, to define a more comprehensive labelling system. This International Standard is not limited to the 3,81 mm magnetic tape cassette described in ISO 3407 but could also be applied to higher capacity cassettes or cartridges.

Information processing. Magnetic tape cassette and cartridge labelling and file structure for information interchange

DS/ISO 4902:1981 信息技术.数据通信.37路数据终端设备/数据通信设备(DTE/DCE)接口连接件和触点数分配

This International Standard specifies the 37-pin and 9-pin connectors and the assignment of connector pin numbers at the interface between data terminal equipment (DTE) and data circuit-terminating equipment (DCE) where CCITT1) Recom-mendation V.24 together with Recommendations V.10 and V.11 are applicable. Use of the 9-pin connector only applies when a backward channel capability is implemented in an inter-face.

Data communication. 37-pin and 9-pin DTE/DCE interface connectors and pin assignments