ISO/IEC 8825-2:2015 Preview

Information technology -- ASN.1 encoding rules: Specification of Packed Encoding Rules (PER)

The electronic version of this International Standard can be downloaded from the ISO/IEC Information Technology Task Force (ITTF) web site

ISO/IEC 8825-2:2015 specifies a set of Packed Encoding Rules that may be used to derive a transfer syntax for values of types defined in Rec. ITU-T X.680 | ISO/IEC 8824-1. These Packed Encoding Rules are also to be applied for decoding such a transfer syntax in order to identify the data values being transferred.

The encoding rules specified in this Recommendation | International Standard:

- are used at the time of communication;

- are intended for use in circumstances where minimizing the size of the representation of values is the major concern in the choice of encoding rules;

- allow the extension of an abstract syntax by addition of extra values, preserving the encodings of the existing values, for all forms of extension described in Rec. ITU-T X.680 | ISO/IEC 8824‑1;

- can be modified in accordance with the provisions of Rec. ITU-T X.695 | ISO/IEC 8825‑6.


General information

  • Status :  Published
    Publication date : 2015-11
  • Edition : 5
    Number of pages : 63
  • :
    ISO/IEC JTC 1/SC 6
    Telecommunications and information exchange between systems
  • 35.100.60
    Presentation layer

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