# Recommendation I.334 (11/1988): Principles relating ISDN numbers/sub-addresses to the OSI reference model network layer addresses

> recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051414](https://www.wikidata.org/wiki/Q27051414)  
**Source**: https://4ort.xyz/entity/recommendation-i-334-11-1988-principles-relating-isdn-numbers-sub-addresses-to-the-osi-reference-model-network-layer-addresses