# Recommendation U.7 (11/1988): Numbering schemes for automatic switching networks

> superseded recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051488](https://www.wikidata.org/wiki/Q27051488)  
**Source**: https://4ort.xyz/entity/recommendation-u-7-11-1988-numbering-schemes-for-automatic-switching-networks