Source note · SIP 503 and trunk out-of-service failures
Teams Call Analytics only helps when a call reaches Direct Routing's internal components; for SBC pairing problems or rejected INVITEs, Microsoft points to the SBC logs, where Direct Routing sends detailed error descriptions.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- troubleshooting tools
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Monitor Direct Routing — Microsoft · tier 2 current vendor documentation · Section 'Monitor Call Quality Analytics dashboard and SBC logs'
Cite this note
APA
WarmTransfer. (2026, September 25). SIP 503 and trunk out-of-service failures: source note sip-503-trunk-failures-dr-sbc-logs. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-503-trunk-failures-dr-sbc-logs
BibTeX
@misc{warmtransfer-claim-sip-503-trunk-failures-dr-sbc-logs,
title = {SIP 503 and trunk out-of-service failures: source note sip-503-trunk-failures-dr-sbc-logs},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-503-trunk-failures-dr-sbc-logs},
note = {Source note sip-503-trunk-failures-dr-sbc-logs, checked 2026-09-25}
}