# direct inward dial

> telecommunications system which assigns an E.164 direct-dial outside telephone number to individual PBX extensions for incoming calls

**Wikidata**: [Q1049026](https://www.wikidata.org/wiki/Q1049026)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/Direct_inward_dial)  
**Source**: https://4ort.xyz/entity/direct-inward-dial


## References

1. Freebase Data Dumps. 2013