Source record · tier 2 current vendor documentation

Transfer phone numbers to Microsoft Teams

Publisher: Microsoft
URL: https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/transfer-phone-numbers-to-teams
Published: 2026-05-28
Updated: unknown
Accessed: 2026-09-21
HTTP status: 200
License: Microsoft Learn terms of use; no-redistribution; short excerpts and locators only

Source notes citing this source

For numbers already used with Direct Routing or Operator Connect in the US or Canada, preassignment is not allowed during a Calling Plan port, but the existing assignment can be kept if each number has a Calling Plan licence and an emergency location before the port completes; outside the US and Canada such numbers arrive unassigned. in context
The billing telephone number given on a port request must match what the current service provider has on file and any account freeze must be removed, otherwise the port request is rejected after submission. in context
Microsoft acknowledges confirmation of a submitted port request within 72 business hours, and order status is tracked in Teams admin center under Voice > Phone numbers > Order history. in context
When numbers are ported into Calling Plans from Direct Routing or Operator Connect, preassignment is not allowed: in the United States and Canada the existing assignment can be maintained provided a Calling Plan licence and emergency location are in place before port completion, and outside the United States and Canada the numbers transfer in unassigned. in context
In the new US and Canada porting wizard, Microsoft acknowledges port requests within 72 business hours. in context
When numbers move from Direct Routing or Operator Connect into Calling Plans, preassignment is not allowed; in the US and Canada existing assignments can be kept, while elsewhere numbers arrive unassigned. in context
The Teams porting wizard requires the losing account's PIN for all mobile numbers, and Microsoft says that account PIN is not the same as a BTN freeze PIN. in context
A port request submitted through the new US and Canada Teams porting wizard is acknowledged within 72 business hours. in context
A port to Teams Calling Plans is started in the Teams admin center under Voice > Phone numbers > Numbers > Port, by a Teams Telephony, Teams Communications or Teams Administrator. in context
When Direct Routing or Operator Connect numbers port into Calling Plans, preassignment is not allowed: in the US and Canada existing assignments can be kept if each number has a Calling Plan license and emergency location before completion, while elsewhere numbers arrive unassigned. in context
The Teams admin center offers a new porting wizard for US and Canada numbers (labelled 'US & Canada Preview', with e-signature of the Letter of Authorization), alongside the classic wizard for all regions. in context
Sources disagree on what funding a toll-free Calling Plan number needs: Communication Credits pages and the port-order rules require a positive Communication Credits balance, which MCA-billed tenants cannot buy, while the getting-numbers page also says a pay-as-you-go billing method suffices. disputed in context
The account PIN with the current provider is required for all mobile numbers being ported, and it is not the same thing as a BTN Freeze PIN. in context
To submit a port order in the Teams admin center, the admin needs the Teams Telephony Administrator, Teams Communications Administrator or Teams Administrator role. in context
The authorized user cannot be changed during a port request; any change must be made with the current provider before the port. After the port completes, Microsoft treats the tenant admins as authorized users. in context
If the Billing Telephone Number (BTN) does not match the current provider's records or the account has a freeze, the port request is rejected after submission. in context
A Canceled port order is closed and the numbers are not ported. A new port order reuses none of the earlier validations or documents. in context
Microsoft acknowledges a submitted port request within 72 business hours. in context
Outside the US and Canada, Direct Routing or Operator Connect numbers moved into Calling Plans cannot be preassigned and arrive unassigned. in context
When Direct Routing or Operator Connect numbers in the US or Canada move into Calling Plans, preassignment is not allowed, but Microsoft can keep the existing assignment. A Calling Plan license and an emergency calling location must be assigned for each number before the port completes. in context
If an edit to a validated order affects an LOA that has already been signed and uploaded, the updated LOA must be downloaded, signed and re-uploaded before the edit can be submitted. The country or region cannot be edited. in context
The Letter of Authorization (LOA) can be signed by e-signature, where the authorized user gets an email and approval auto-submits the order (recommended), or offline by downloading, signing and uploading it. in context
In the port wizard, numbers are entered individually (10-digit or E.164 in the new US/Canada wizard, E.164 in the classic wizard) or uploaded as a one-column CSV headed PhoneNumber; number ranges are not supported. in context
Problems with ported numbers noticed within 24-48 hours after the port completes go to the Phone Number Service Center; anything after 48 hours goes to Microsoft Support. in context
For numbers ported from an external carrier into Calling Plans, preassignment is allowed if the user or resource account has the required Phone System or resource account license and a Calling Plan license, and its usage location matches the number's country. Toll-free numbers also need a positive Communications Credits balance. in context
The Exception port-order status means the carrier that currently owns the numbers rejected the order, typically because of incorrect LOA details such as the PIN or ZIP code; Microsoft support corrects and resubmits the order. in context
The Teams admin center offers two port wizards: a new wizard for US and Canada numbers (labelled US & Canada Preview) and a classic All regions wizard; Microsoft says the new wizard is being developed for the other Calling Plans regions. in context
The new US/Canada wizard groups the entered numbers by account, service provider and type, and processes only one group per port request; each additional group needs its own request. in context

Cite this source record

APA

WarmTransfer. (2026, May 28). Transfer phone numbers to Microsoft Teams. WarmTransfer. https://warmtransfer.net/knowledge/sources/ms-learn-transfer-phone-numbers

BibTeX

@misc{warmtransfer-ms-learn-transfer-phone-numbers,
  title  = {Transfer phone numbers to Microsoft Teams},
  author = {{WarmTransfer}},
  year   = {2026},
  url    = {https://warmtransfer.net/knowledge/sources/ms-learn-transfer-phone-numbers},
  note   = {Microsoft, accessed 2026-09-21}
}