# Recommendation X.209 (11/1988): Specification of Basic Encoding Rules for Abstract Syntax Notation One (ASN.1)

> withdrawn recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051508](https://www.wikidata.org/wiki/Q27051508)  
**Source**: https://4ort.xyz/entity/recommendation-x-209-11-1988-specification-of-basic-encoding-rules-for-abstract-syntax-notation-one-asn-1-