Source note · UC observability and synthetic monitoring
In Teams Call Analytics an Ms-diag error code in the range 20-29 marks a failed call setup, one of the conditions that classify an audio session as poor.
Checked 2026-09-24
- Vendor
- Microsoft
- Product
- Teams
- Subsystem
- Call Analytics poor-session criteria
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- earlier Call Analytics experience
- Checked
- 2026-09-24
Sources
- Use Call Analytics to troubleshoot poor call quality — Microsoft · tier 2 current vendor documentation · Section 'Troubleshoot user call quality problems', poor-session table row 'Call setup'
Cite this note
APA
WarmTransfer. (2026, September 24). UC observability and synthetic monitoring: source note observability-uc-call-analytics-ms-diag-20-29. WarmTransfer. https://warmtransfer.net/knowledge/claims/observability-uc-call-analytics-ms-diag-20-29
BibTeX
@misc{warmtransfer-claim-observability-uc-call-analytics-ms-diag-20-29,
title = {UC observability and synthetic monitoring: source note observability-uc-call-analytics-ms-diag-20-29},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/observability-uc-call-analytics-ms-diag-20-29},
note = {Source note observability-uc-call-analytics-ms-diag-20-29, checked 2026-09-24}
}