Source note · Setting up an Oracle SBC for Teams Direct Routing

The SIP proxy matches the Contact FQDN against the SBC certificate CN/SAN (exact or wildcard), then finds the tenant by looking up the full Contact FQDN as a registered domain and, failing that, the FQDN with its host portion removed; if neither is found the call fails.

Checked 2026-09-30

Vendor: Microsoft
Product: Microsoft Teams Phone Direct Routing
Subsystem: SIP headers
Deployment: multi-tenant
Region: not restricted
Release range: current as of 2026-09-30
Checked: 2026-09-30

Sources

Teams Phone System Direct Routing: SIP protocol — Microsoft · tier 2 current vendor documentation · Processing the incoming request: finding the tenant and user, steps 1-3

Cite this note

APA

WarmTransfer. (2026, September 30). Setting up an Oracle SBC for Teams Direct Routing: source note oracle-sbc-teams-direct-routing-setup-contact-cert-match. WarmTransfer. https://warmtransfer.net/knowledge/claims/oracle-sbc-teams-direct-routing-setup-contact-cert-match

BibTeX

@misc{warmtransfer-claim-oracle-sbc-teams-direct-routing-setup-contact-cert-match,
  title  = {Setting up an Oracle SBC for Teams Direct Routing: source note oracle-sbc-teams-direct-routing-setup-contact-cert-match},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/oracle-sbc-teams-direct-routing-setup-contact-cert-match},
  note   = {Source note oracle-sbc-teams-direct-routing-setup-contact-cert-match, checked 2026-09-30}
}

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