# Recommendation X.71 (11/1988): Decentralized terminal and transit control signalling system on international circuits between synchronous data networks

> recommendation/international standard from the International Telecommunication Union

**Wikidata**: [Q27051529](https://www.wikidata.org/wiki/Q27051529)  
**Source**: https://4ort.xyz/entity/recommendation-x-71-11-1988-decentralized-terminal-and-transit-control-signalling-system-on-international-circuits-between-synchronous-data-networks