Source note · Troubleshooting Teams Direct Routing
Microsoft response code 510532 with SIP 403 ('No trunk config was found' or 'RuntimeApi trunk config not found for customer') means Direct Routing found no trunk configuration for the call. Microsoft says to check that calls come from the correct SBC FQDN for the tenant, that the Contact header FQDN is registered to the tenant, and that the gateway configuration is correct.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Microsoft Teams Phone Direct Routing
- Subsystem
- sip-response-codes
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- SIP 403 and Microsoft response codes - Microsoft Teams — Microsoft · tier 2 current vendor documentation · 510532 403 Get Inbound Direct Routing - RuntimeApi trunk config not found for customer; 510532 403 No trunk config was found
Cite this note
APA
WarmTransfer. (2026, September 25). Troubleshooting Teams Direct Routing: source note teams-direct-routing-troubleshooting-403-510532. WarmTransfer. https://warmtransfer.net/knowledge/claims/teams-direct-routing-troubleshooting-403-510532
BibTeX
@misc{warmtransfer-claim-teams-direct-routing-troubleshooting-403-510532,
title = {Troubleshooting Teams Direct Routing: source note teams-direct-routing-troubleshooting-403-510532},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/teams-direct-routing-troubleshooting-403-510532},
note = {Source note teams-direct-routing-troubleshooting-403-510532, checked 2026-09-25}
}