# Recommendation T.523 (11/1988): Communication application profile DM-1 for videotex interworking

> superseded recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051461](https://www.wikidata.org/wiki/Q27051461)  
**Source**: https://4ort.xyz/entity/recommendation-t-523-11-1988-communication-application-profile-dm-1-for-videotex-interworking