In the Teams hosting model, each customer subdomain must match both the FQDN of the trunk configured for that customer and the FQDN the SBC puts in the Contact header when it sends the INVITE.

Checked 2026-10-14

Vendor
Microsoft
Product
Teams Phone
Subsystem
Direct Routing
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-10-14
Checked
2026-10-14

Sources

Cite this note

APA

WarmTransfer. (2026, October 14). One SBC serving several calling platforms: source note multi-platform-sbc-design-teams-subdomain-matches-contact. WarmTransfer. https://warmtransfer.net/knowledge/claims/multi-platform-sbc-design-teams-subdomain-matches-contact

BibTeX

@misc{warmtransfer-claim-multi-platform-sbc-design-teams-subdomain-matches-contact,
  title  = {One SBC serving several calling platforms: source note multi-platform-sbc-design-teams-subdomain-matches-contact},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/multi-platform-sbc-design-teams-subdomain-matches-contact},
  note   = {Source note multi-platform-sbc-design-teams-subdomain-matches-contact, checked 2026-10-14}
}

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