# Stored program control exchange

> technology used for telephone exchanges

**Wikidata**: [Q835880](https://www.wikidata.org/wiki/Q835880)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Stored_program_control)  
**Source**: https://4ort.xyz/entity/stored-program-control-exchange


## References

1. Freebase Data Dumps. 2013