For US Microsoft Calling Plan ports, changes must be requested at least 2 business days, and cancellations at least 1 business day, before the approved port date.

Checked 2026-09-24

Vendor
Microsoft
Product
Teams Phone - Microsoft Calling Plans
Subsystem
port-in
Deployment
multi-tenant
Region
us
Release range
current as of 2026-09-24
Checked
2026-09-24

Sources

Cite this note

APA

WarmTransfer. (2026, September 24). Number porting and LNP workflows: source note number-porting-ms-us-change-cancel-notice. WarmTransfer. https://warmtransfer.net/knowledge/claims/number-porting-ms-us-change-cancel-notice

BibTeX

@misc{warmtransfer-claim-number-porting-ms-us-change-cancel-notice,
  title  = {Number porting and LNP workflows: source note number-porting-ms-us-change-cancel-notice},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/claims/number-porting-ms-us-change-cancel-notice},
  note   = {Source note number-porting-ms-us-change-cancel-notice, checked 2026-09-24}
}

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