Source note · Troubleshooting SIP 403 Forbidden from a carrier
In Teams Direct Routing a Microsoft response code that starts with 560 means the final SIP response code was generated by the SBC, and the last three digits are that SIP code; codes that do not start with 560 were generated by a Microsoft service.
Checked 2026-09-30
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- call diagnostics
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-30
- Checked
- 2026-09-30
Sources
- Microsoft and SIP response codes — Microsoft · tier 2 current vendor documentation · Direct Routing error codes
Cite this note
APA
WarmTransfer. (2026, September 30). Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-ms-560-prefix. WarmTransfer. https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-ms-560-prefix
BibTeX
@misc{warmtransfer-claim-sip-403-forbidden-troubleshooting-ms-560-prefix,
title = {Troubleshooting SIP 403 Forbidden from a carrier: source note sip-403-forbidden-troubleshooting-ms-560-prefix},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/sip-403-forbidden-troubleshooting-ms-560-prefix},
note = {Source note sip-403-forbidden-troubleshooting-ms-560-prefix, checked 2026-09-30}
}