# QSIG

> ISDN protocol

**Wikidata**: [Q2121327](https://www.wikidata.org/wiki/Q2121327)  
**Wikipedia**: [English](https://en.wikipedia.org/wiki/QSIG)  
**Source**: https://4ort.xyz/entity/qsig


## References

1. Freebase Data Dumps. 2013
2. [Source](https://www.iana.org/assignments/media-types/application/QSIG)
3. RFC 3204: MIME media types for ISUP and QSIG Objects