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

For calls into Teams, the phone numbers in the Request-URI and From header must include a leading plus sign, and Microsoft recommends always adding user=phone to the Request-URI.

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 · Request-URI; From Header; Use of Request-URI parameter user=phone

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-plus-in-ruri. WarmTransfer. https://warmtransfer.net/knowledge/claims/oracle-sbc-teams-direct-routing-setup-plus-in-ruri

BibTeX

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

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