# Recommendation T.6 (11/1988): Facsimile coding schemes and coding control functions for Group 4 facsimile apparatus

> recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q26887334](https://www.wikidata.org/wiki/Q26887334)  
**Source**: https://4ort.xyz/entity/recommendation-t-6-11-1988-facsimile-coding-schemes-and-coding-control-functions-for-group-4-facsimile-apparatus