1 Scope
This Recommendation | International Standard 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:
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– are used at the time of communication;
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– 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;
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– 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;
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– can be modified in accordance with the provisions of Rec. ITU-T X.695 | ISO/IEC 8825‑6.