### This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

### This is embarrasing...

An error occurred while processing the form. Please try again in a few minutes.

# ITU-T X.680

## Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Amendment 1: Relaxing IMPORTS clause to allow importation of definitions from new versions of a given module

active, Most Current
 Organization: ITU-T Publication Date: 1 May 2018 Status: active Page Count: 8

### Document History

February 1, 2021
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation
This Recommendation | International Standard provides a standard notation called Abstract Syntax Notation One (ASN.1) that is used for the definition of data types, values, and constraints on data...
May 1, 2018
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Technical Corrigendum 3
A description is not available for this item.
ITU-T X.680
May 1, 2018
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Amendment 1: Relaxing IMPORTS clause to allow importation of definitions from new versions of a given module
A description is not available for this item.
October 1, 2017
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Technical Corrigendum 2
A description is not available for this item.
May 1, 2017
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Technical Corrigendum 1
A description is not available for this item.
August 1, 2015
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation
This Recommendation | International Standard provides a standard notation called Abstract Syntax Notation One (ASN.1) that is used for the definition of data types, values, and constraints on data...
March 1, 2014
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Technical Corrigendum 2
A description is not available for this item.
October 1, 2011
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Technical Corrigendum 1
This Recommendation | International Standard provides a standard notation called Abstract Syntax Notation One (ASN.1) that is used for the definition of data types, values, and constraints on data...
November 1, 2008
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation
This Recommendation | International Standard provides a standard notation called Abstract Syntax Notation One (ASN.1) that is used for the definition of data types, values, and constraints on data...
May 1, 2007
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Amendment 4: PER encoding instructions
A description is not available for this item.
June 1, 2006
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Amendment 3: Time type support
A description is not available for this item.
May 1, 2005
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation SERIES X: DATA NETWORKS, OPEN SYSTEM COMMUNICATIONS AND SECURITY OSI networking and system aspects – Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
August 1, 2004
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Amendment 2: Alignment with changes made to ITU-T Rec. X.660 X'A6' ISO/IEC 9834-1 for identifiers in object identifier value notation
A description is not available for this item.
October 1, 2003
Information technology – Abstract Syntax Notation One (ASN.1): Specification of basic notation Amendment 1: Support for EXTENDED-XER SERIES X: DATA NETWORKS AND OPEN SYSTEM COMMUNICATIONS OSI networking and system aspects – Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
July 1, 2002
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation Series X: Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
March 1, 2000
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation Technical Corrigendum 2 Series X: Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
June 1, 1999
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation Amendment 2: ASN.1 Semantic Model Series X: Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
June 1, 1999
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation Amendment 1: Relative Object Identifiers Series X: Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
June 1, 1999
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation - Series X: Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
December 1, 1997
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation - Series X: Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
January 1, 1995
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation - Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1) Technical Corrigendum 1
A description is not available for this item.
January 1, 1994
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation - Data Networks and Open System Communications - OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1) Amendment 1
A description is not available for this item.
January 1, 1994
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation - Data Networks and Open System Communications - OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1)
A description is not available for this item.
January 1, 1994
Information Technology - Abstract Syntax Notation One (ASN.1): Specification of Basic Notation - Data Networks and Open System Communications OSI Networking and System Aspects - Abstract Syntax Notation One (ASN.1) Amendment 1, Technical Corrigendum 1
A description is not available for this item.