Source note · ITU-T Q.850 call clearing cause values
The normal class holds 25 of the 70 Q.850 causes, more than any other class, and the interworking class holds exactly one.
field report · Checked 2026-09-15
6.2.7.1 Normal class
- Vendor
- ITU-T
- Product
- ITU-T Recommendation Q.850
- Subsystem
- Cause and location
- Deployment
- not restricted
- Region
- not restricted
- Release range
- edition 10/2018
- Status
- field report
- 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 · clause 6.2.7 subclause groupings
Cite this note
APA
WarmTransfer. (2026, September 15). ITU-T Q.850 call clearing cause values: source note q850-normal-class-holds-a-quarter-of-the-causes. WarmTransfer. https://warmtransfer.net/knowledge/claims/q850-normal-class-holds-a-quarter-of-the-causes
BibTeX
@misc{warmtransfer-claim-q850-normal-class-holds-a-quarter-of-the-causes,
title = {ITU-T Q.850 call clearing cause values: source note q850-normal-class-holds-a-quarter-of-the-causes},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/q850-normal-class-holds-a-quarter-of-the-causes},
note = {Source note q850-normal-class-holds-a-quarter-of-the-causes, checked 2026-09-15}
}