# Recommendation Q.930 (11/1988): ISDN user-network interface layer 3 - General aspects

> superseded recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051437](https://www.wikidata.org/wiki/Q27051437)  
**Source**: https://4ort.xyz/entity/recommendation-q-930-11-1988-isdn-user-network-interface-layer-3-general-aspects