# Packed encoding rules

### From Wikipedia, the free encyclopedia.

Packed encoding rules (PER) are ASN.1 encoding rules for producing a compact transfer syntax for data structures described in ASN.1, defined in 1994.

PER provides a much more compact encoding than BER. It tries to represent the data units using the minimum number of bits. The compactness requires that the decoder knows the complete abstract syntax of the data structure to be decoded, however.

Documents: ITU-T X.691, ISO 8825-2.

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## References

This article was originally based on material from the Free On-line Dictionary of Computing, which is licensed under the GFDL.

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Categories: ITU-T recommendations

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