Teams users must have a phone number with PSTN calling enabled to use SIP Gateway, and SIP Gateway is not yet available for DoD.

Checked 2026-09-16

Teams users must have a phone number with PSTN calling enabled to use SIP Gateway.
Vendor
Microsoft
Product
Teams SIP Gateway
Subsystem
requirements
Deployment
multi-tenant
Region
global excluding dod
Release range
current as of 2026-09-16
Checked
2026-09-16

Sources

Cite this note

APA

WarmTransfer. (2026, September 16). CUCM to Teams Phone migration: source note cucm-to-teams-phone-sip-gateway-requirements. WarmTransfer. https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-sip-gateway-requirements

BibTeX

@misc{warmtransfer-claim-cucm-to-teams-phone-sip-gateway-requirements,
  title  = {CUCM to Teams Phone migration: source note cucm-to-teams-phone-sip-gateway-requirements},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/cucm-to-teams-phone-sip-gateway-requirements},
  note   = {Source note cucm-to-teams-phone-sip-gateway-requirements, checked 2026-09-16}
}

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