# Recommendation T.431 (11/1988): Document transfer and manipulation (DTAM) - Services and protocols - Introduction and general principles

> superseded recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q26931556](https://www.wikidata.org/wiki/Q26931556)  
**Source**: https://4ort.xyz/entity/recommendation-t-431-11-1988-document-transfer-and-manipulation-dtam-services-and-protocols-introduction-and-general-principles