Direct Routing requires the user to be homed online, which is checked by confirming RegistrarPool has a value in the infra.lync.com domain; where OnPremLineUri is populated the number was assigned on-premises and must be cleared with Set-CsUser -LineUri $null in the Skype for Business Management Shell and synchronised before the number is configured online.

Checked 2026-09-21

Vendor
Microsoft
Product
Teams Phone
Subsystem
user-enablement
Deployment
multi-tenant, hybrid
Region
not restricted
Release range
current as of 2026-09-21
Checked
2026-09-21

Sources

Cite this note

APA

WarmTransfer. (2026, September 21). CUCM to Teams Phone migration: source note cucm-to-teams-phone-users-homed-online-check. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-users-homed-online-check

BibTeX

@misc{warmtransfer-claim-cucm-to-teams-phone-users-homed-online-check,
  title  = {CUCM to Teams Phone migration: source note cucm-to-teams-phone-users-homed-online-check},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-users-homed-online-check},
  note   = {Source note cucm-to-teams-phone-users-homed-online-check, checked 2026-09-21}
}

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