If a Teams user is assigned a number with an extension, an inbound called number must include that extension for reverse number lookup to match. Otherwise the call fails or follows unassigned number routing if configured.

Checked 2026-09-23

Vendor
Microsoft
Product
Teams Phone
Subsystem
reverse number lookup
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-23
Checked
2026-09-23

Sources

Cite this note

APA

WarmTransfer. (2026, September 23). Enterprise dial plan design and normalization: source note dial-plan-design-teams-rnl-extension-must-match. WarmTransfer. https://warmtransfer.net/knowledge/claims/dial-plan-design-teams-rnl-extension-must-match

BibTeX

@misc{warmtransfer-claim-dial-plan-design-teams-rnl-extension-must-match,
  title  = {Enterprise dial plan design and normalization: source note dial-plan-design-teams-rnl-extension-must-match},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/dial-plan-design-teams-rnl-extension-must-match},
  note   = {Source note dial-plan-design-teams-rnl-extension-must-match, checked 2026-09-23}
}

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