To use SIP Gateway, Teams users must have a phone number with PSTN calling enabled.

Checked 2026-09-25

Vendor
Microsoft
Product
Teams SIP Gateway
Subsystem
licensing
Deployment
multi-tenant
Region
not restricted
Release range
current as of 2026-09-25
Checked
2026-09-25

Sources

Cite this note

APA

WarmTransfer. (2026, September 25). Poly phones on Teams and Webex and Zoom: source note poly-phones-uc-sipgw-pstn-required. WarmTransfer. https://warmtransfer.net/knowledge/claims/poly-phones-uc-sipgw-pstn-required

BibTeX

@misc{warmtransfer-claim-poly-phones-uc-sipgw-pstn-required,
  title  = {Poly phones on Teams and Webex and Zoom: source note poly-phones-uc-sipgw-pstn-required},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/poly-phones-uc-sipgw-pstn-required},
  note   = {Source note poly-phones-uc-sipgw-pstn-required, checked 2026-09-25}
}

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