# Recommendation X.4 (11/1988): General structure of signals of International Alphabet No. 5 code for character oriented data transmission over public data networks

> recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051525](https://www.wikidata.org/wiki/Q27051525)  
**Source**: https://4ort.xyz/entity/recommendation-x-4-11-1988-general-structure-of-signals-of-international-alphabet-no-5-code-for-character-oriented-data-transmission-over-public-data-networks