A Microsoft response code starting with 560 means the final SIP response was generated by the SBC, with the last three digits giving that SIP code (560403 means the SBC sent 403); Microsoft recommends starting with SBC logs and the SBC vendor.

Checked 2026-09-24

Vendor
Microsoft
Product
Teams Phone Direct Routing
Subsystem
response codes
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Carrier escalation evidence packages: source note carrier-escalation-evidence-ms-560-subcode. WarmTransfer. https://warmtransfer.net/knowledge/claims/carrier-escalation-evidence-ms-560-subcode

BibTeX

@misc{warmtransfer-claim-carrier-escalation-evidence-ms-560-subcode,
  title  = {Carrier escalation evidence packages: source note carrier-escalation-evidence-ms-560-subcode},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/carrier-escalation-evidence-ms-560-subcode},
  note   = {Source note carrier-escalation-evidence-ms-560-subcode, checked 2026-09-24}
}

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