Source note · ITU-T Q.850 call clearing cause values
Causes carried in the ISDN user part and not marked for national use are the minimum set of cause values that shall be supported over the international interface.
Checked 2026-09-15
Causes carried in ISUP which are not marked for national use (NU) are the minimum set of cause values that shall be supported over the international interface.
- Vendor
- ITU-T
- Product
- ITU-T Recommendation Q.850
- Subsystem
- Cause and location
- Deployment
- not restricted
- Region
- not restricted
- Release range
- edition 10/2018
- Checked
- 2026-09-15
Sources
- ITU-T Recommendation Q.850 (10/2018), Usage of cause and location in the Digital Subscriber Signalling System No. 1 and the Signalling System No. 7 ISDN user part — International Telecommunication Union (ITU-T) · tier 1 standards and regulators · Table 1 note 1
Cite this note
APA
WarmTransfer. (2026, September 15). ITU-T Q.850 call clearing cause values: source note q850-international-interface-minimum-set. WarmTransfer. https://warmtransfer.net/knowledge/claims/q850-international-interface-minimum-set
BibTeX
@misc{warmtransfer-claim-q850-international-interface-minimum-set,
title = {ITU-T Q.850 call clearing cause values: source note q850-international-interface-minimum-set},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/q850-international-interface-minimum-set},
note = {Source note q850-international-interface-minimum-set, checked 2026-09-15}
}