# synchronous transmit-receive

> 1960s era IBM mainframe networking protocol (no longer in use)

**Wikidata**: [Q17154852](https://www.wikidata.org/wiki/Q17154852)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Synchronous_transmit-receive)  
**Source**: https://4ort.xyz/entity/synchronous-transmit-receive