本建议|国际标准规定了一组基本编码规则，这些规则可用于推导使用建议ITU-T X.680 | ISO/IEC 8824-1、建议ITU-T X.681 | ISO/IEC 8824-2、建议ITU-T X.682 | ISO/IEC 8824-3和建议ITU-T X.683 | ISO/IEC 8824-4中规定的符号定义的类型值的传输语法规范，统称为抽象语法符号1或ASN。1.这些基本编码规则也适用于解码这种传输语法，以便识别正在传输的数据值。它还指定了一组规范的和可区分的编码规则，这些规则将值的编码限制为仅由基本编码规则提供的一个备选方案。 购买本文件时可获得的所有当前修订均包含在购买本文件中。

This Recommendation | International Standard specifies a set of basic encoding rules that may be used to derive the specification of a transfer syntax for values of types defined using the notation specified in Rec. ITU-T X.680 | ISO/IEC 8824-1, Rec. ITU-T X.681 | ISO/IEC 8824-2, Rec. ITU-T X.682 | ISO/IEC 8824-3, and Rec. ITU-T X.683 | ISO/IEC 8824-4, collectively referred to as Abstract Syntax Notation One or ASN.1. These basic encoding rules are also to be applied for decoding such a transfer syntax in order to identify the data values being transferred. It also specifies a set of canonical and distinguished encoding rules that restrict the encoding of values to just one of the alternatives provided by the basic encoding rules.All current amendments available at time of purchase are included with the purchase of this document.