The SBC FQDN must belong to a verified domain in the Microsoft 365 tenant; the default *.onmicrosoft.com domain cannot be used.
Checked 2026-09-25
- Vendor
- Microsoft
- Product
- Teams Phone Direct Routing
- Subsystem
- SBC pairing
- Deployment
- multi-tenant
- Region
- not restricted
- Release range
- current as of 2026-09-25
- Checked
- 2026-09-25
Sources
- Plan Direct Routing — Microsoft (Microsoft Learn) · tier 2 current vendor documentation · SBC domain names section
Cite this note
APA
WarmTransfer. (2026, September 25). Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-dr-sbc-fqdn-domain. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-dr-sbc-fqdn-domain
BibTeX
@misc{warmtransfer-claim-cucm-teams-coexistence-dr-sbc-fqdn-domain,
title = {Unified CM and Teams Phone coexistence during a migration: source note cucm-teams-coexistence-dr-sbc-fqdn-domain},
author = {{WarmTransfer}},
year = {2026},
url = {https://warmtransfer.net/knowledge/claims/cucm-teams-coexistence-dr-sbc-fqdn-domain},
note = {Source note cucm-teams-coexistence-dr-sbc-fqdn-domain, checked 2026-09-25}
}