X.680�:�Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation

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X.680�:�Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation �

Recommendation X.680

In force components
Number	Title	Status
X.680-X.693 (02/21) �	Information Technology - Abstract Syntax Notation One (ASN.1) & ASN.1 encoding rules � This word collective file contains automatic cross-linkings, and is available in English only. Please read carefully the readme file before opening it.	In force
X.680 (02/21) �	Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation � The zip file containing the Word versions of Rec. ITU-T X.680 (2021) \| ISO/IEC 8824-1:2021 to Rec. ITU-T X.693 (2021) \| ISO/IEC 8825-4:2021 can be found at http://www.itu.int/rec/T-REC-X.680-X.693-202102-I/en	In force
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Superseded and Withdrawn components
Number	Title	Status
X.680-X.693 (08/2015) �	Information Technology - Abstract Syntax Notation One (ASN.1) & ASN.1 encoding rules � This word collective file contains automatic cross-linkings, and is available in English only. Please read carefully the readme-first.doc file before opening it.	Superseded
X.680-X.693 (11/08) �	Information Technology - Abstract Syntax Notation One (ASN.1) & ASN.1 encoding rules � This word collective file contains automatic cross-linkings, and is available in English only. Please read carefully the readme-first.doc file before opening it.	Superseded
X.680-X.695 (07/02) �	Information Technology - Abstract Syntax Notation One (ASN.1) & ASN.1 encoding rules � This word collective file contains automatic cross-linkings, and is available in English only. Please read carefully the readme.rtf file before opening it.	Superseded
X.680 (07/94) �	Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation �	Superseded
X.680 (1994) Amendment 1 (04/95) �	Rules of extensibility �	Superseded
X.680 (1994) Technical Cor. 1 (11/95) �	�	Superseded
X.680 (1994) Corrigendum 2 (12/97) �	� Never published. Decision was taken to republish the whole set of ITU-T Recommendations X.680 to X.691	Superseded
X.680 (1994) Amendment 1 Corrigendum 1 (12/97) �	� Never published. Decision was taken to republish the whole set of ITU-T Recommendations X.680 to X.691	Superseded
X.680 (1994) Amendment 2 (12/97) �	Remove definition of root arcs of object identifier tree � Never published. Decision was taken to republish the whole set of ITU-T Recommendations X.680 to X.691	Superseded
X.680 (12/97) �	Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation �	Superseded
X.680 (1997) Technical Cor. 1 (06/99) �	�	Superseded
X.680 (1997) Amendment 1 (06/99) �	Relative object identifiers �	Superseded
X.680 (1997) Amendment 2 (06/99) �	ASN.1 Semantic model �	Superseded
X.680 (1997) Technical Cor. 2 (03/00) �	�	Superseded
X.680 (1997) Technical Cor. 3 (02/01) �	�	Superseded
X.680 (1997) Technical Cor. 4 (03/01) �	�	Superseded
X.680 (1997) Amendment 3 (10/01) �	XML value notation � Never published, consolidated in ITU-T Rec. X.680 (07/2002)	Superseded
X.680 (1997) Amendment 4 (10/01) �	Version number support � Never published, consolidated in ITU-T Rec. X.680 (07/2002)	Superseded
X.680 (07/02) �	Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation �	Superseded
X.680 (2002) Amendment 1 (10/03) �	Support for EXTENDED-XER �	Superseded
X.680 (2002) Amendment 2 (08/04) �	Alignment with changes made to ITU-T Rec. X.660 \| ISO/IEC 9834-1 for identifiers in object identifier value notation �	Superseded
X.680 (2002) Corrigendum 1 (05/05) �	�	Superseded
X.680 (2002) Amendment 3 (06/06) �	Time type support �	Superseded
X.680 (2002) Amendment 4 (05/07) �	PER encoding instructions �	Superseded
X.680 (11/08) �	Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation �	Superseded
X.680 (2008) Corrigendum 1 (10/11) �	� This Corrigendum was republished to indicate 2012 as year of publication in ISO.	Superseded
X.680 (2008) Corrigendum 2 (03/14) �	�	Superseded
X.680 (08/15) �	Information technology - Abstract Syntax Notation One (ASN.1): Specification of basic notation � The zip file containing the Word versions of Rec. ITU-T X.680 (2015) \| ISO/IEC 8824-1:2015 to Rec. ITU-T X.693 (2015) \| ISO/IEC 8825-4:2015 can be found at: http://www.itu.int/rec/T-REC-X.680-X.693-201508-S/en	Superseded
X.680 (2015) Corrigendum 1 (05/17) �	�	Superseded
X.680 (2015) Corrigendum 2 (10/17) �	�	Superseded
X.680 (2015) Corrigendum 3 (05/18) �	�	Superseded
X.680 (2015) Amendment 1 (05/18) �	Relaxing IMPORTS clause to allow importation of definitions from new versions of a given module � The file originally posted on 6.8.18 were replaced in February 2019 to indicate 2019 as ISO publication year.	Superseded

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