# Microsoft Teams Calling Plans

Canonical: https://warmtransfer.net/knowledge/teams-calling-plans

Last verified: 2026-09-24

Microsoft offers three Teams Calling Plan options: Domestic Calling Plan, International Calling Plan, and Pay-As-You-Go Calling Plan[^51]. With Calling Plans, Microsoft acts as the PSTN operator, providing PSTN access, phone numbers, telephone support, and US emergency screening backed by a 99.999% reliability SLA[^23].

## Architecture and PSTN Models

Teams Phone provides 4 PSTN connectivity models: Microsoft Teams Calling Plan, Operator Connect, Teams Phone Mobile, and Direct Routing[^15]. Operator Connect requires a contract with a certified third-party operator that provides PSTN access, numbers, SLA, and support, while administration remains in the Teams admin center[^60]. Direct Routing requires a contract with a third-party PSTN provider alongside a certified Session Border Controller procured and managed by the customer, an integrator, or a DRaaS provider[^59]. Calling Plan, Operator Connect, and Direct Routing support user, Audio Conferencing, and voice application numbers, whereas Teams Phone Mobile supports only user numbers[^26]. 

A single tenant can combine Calling Plans with other PSTN connectivity options and multiple operators across different users, locations, and personas[^25]. A Calling Plan license is required only when Microsoft provides the PSTN connection; when using another operator, no additional license beyond Teams Phone is required by Microsoft because PSTN costs are paid directly to that operator[^21]. For PSTN deployment in India, a separate India-specific Teams Phone license from a licensed Indian telecom operator through Operator Connect for India is required[^16]. Under Shared Calling, end users require only a Teams Phone license without a dedicated number or Calling Plan, while a shared resource account using a Microsoft service number requires a Microsoft Pay-As-You-Go Calling Plan license[^49]. Shared Calling is supported in public clouds only, and its resource accounts with service numbers might require Communication Credits if the plan is under a Microsoft Online Subscription Agreement (MOSA) or if the tenant elects not to use post-usage billing[^48].

## Calling Plan Options and Pooling

A Teams Phone license is a prerequisite for purchasing a Calling Plan, or customers can purchase a combined Teams Phone with Calling Plan bundle as a single add-on[^50]. Microsoft offers three Teams Calling Plan options: Domestic Calling Plan, International Calling Plan and Pay-As-You-Go Calling Plan[^51].

* **Domestic Calling Plan**: Allows calls to numbers in the country where the user is assigned in Microsoft 365, including unlimited incoming minutes and outgoing minutes determined by the purchased license[^11].
* **International Calling Plan**: Includes both domestic and international outbound minutes, with international minutes usable to 196 countries, along with unlimited incoming minutes[^17].
* **Pay-As-You-Go Calling Plan**: Provides unlimited incoming minutes and zero outgoing minutes[^30]. Every outgoing call is billed by usage through Communication Credits or post-usage billing on new commerce experience subscriptions[^30]. Users cannot make outgoing calls until the Pay-As-You-Go Calling Plan is funded[^31].

Users assigned the same Calling Plan in the same country share a single pool of minutes (for instance, 100 US Domestic users with 3,000 minutes each share a 300,000-minute pool)[^24]. Minute pooling applies strictly across identical Calling Plans[^24]. The governing country for a user's Calling Plan and minute pool is determined by the usage location set on the user's license in Microsoft 365 admin center Active users, rather than the organization billing address in the Organization profile[^9].

WarmTransfer's reading of the sources is that the per-country availability documentation appears weakly maintained (due to a 2017 ms.date, NOINDEX markup, and inconsistent headings), meaning minute allowances should be verified against Microsoft pricing documentation[^1].

## Regional SKUs and Allowances

Domestic Calling Plan SKUs are split into offerings for customers in US/UK/CA and customers outside US/UK/CA, while Pay-As-You-Go is sold across Zone 1, Zone 2, and Mexico[^13][^12][^33].

| Plan Type | Regional SKU / Zone | Target Market Details |
|---|---|---|
| Domestic Calling Plan | Customers in US/UK/CA | For organizations in the US, Puerto Rico, UK, and Canada; assignable to end users in any Calling Plan market[^13]. |
| Domestic Calling Plan | Customers outside US/UK/CA | For organizations in 29 listed markets (Austria through Switzerland, including Croatia, Hong Kong SAR, New Zealand, Singapore, and South Africa); assignable to users in any Calling Plan market[^12]. |
| Domestic Calling Plan | Mexico | Dedicated domestic plan purchased separately for Mexico[^22]. |
| Pay-As-You-Go | Zone 1 | For users in the US, Puerto Rico, UK, and Canada[^33]. |
| Pay-As-You-Go | Zone 2 | For users across a specified list of European, Asia-Pacific, and African markets[^33]. |
| Pay-As-You-Go | Mexico | Separate plan for Mexico, which cannot be purchased by US or Puerto Rico customers[^33][^28]. |

In the United States, the Domestic Calling Plan provides 3,000 minutes per user per calendar month, while the International Calling Plan provides 3,000 domestic or 600 international minutes, whichever is reached first[^56]. Outbound calls to premium-rate numbers are unsupported on US Calling Plans[^57]. For US and Canadian users, cross-border calls between the US and Canada count as domestic, though they are blocked if a dial-out policy limits users to domestic calls only[^55].

In the United Kingdom, availability documentation lists Pay-As-You-Go, a 120-minute Domestic plan, a 3,000-minute Domestic plan, and an International plan with 3,000 domestic or 600 international minutes per calendar month[^53]. UK users can call shared-cost numbers (prefixes 44843, 44844, 44845, 44870, 44871, and 44872) billed per minute from Communication Credits, whereas 449XX premium prefixes are unsupported[^54].

## Funding and Communication Credits

Pay-As-You-Go Calling Plans and usage-based services depend on the customer's agreement structure:
* **Microsoft Customer Agreement (MCA)**: Outgoing minutes are billed post-usage for the prior month rather than prefunded[^27]. Communication Credits cannot be purchased if subscriptions or the default billing account use MCA[^5].
* **Microsoft Online Subscription Agreement (MOSA)**: Pay-As-You-Go plans must be funded using Communication Credits[^29]. Purchasing credits requires a MOSA billing account configured as the default[^5].
* **Cloud Solution Provider (CSP)**: If a Calling Plan is procured via a CSP, Communication Credits cannot be acquired directly in the Microsoft 365 admin center; the CSP partner must fund them[^3].

Communication Credits fund toll-free numbers (for Audio Conferencing, auto attendants, and call queues), meeting dial-out beyond included pools, minutes exceeding plan caps, and outgoing calls on Pay-As-You-Go plans[^7]. Toll-free calls are billed per minute and require a positive balance[^6]. If a one-time balance hits zero, most calling capabilities—including toll-free inbound services—stop functioning; Microsoft recommends configuring auto-recharge[^8]. Purchased credits not used within 12 months expire and are forfeited[^2]. In addition to organization-level funding, each user (including those with Microsoft 365 E5) must have an individual Communication Credits license assigned to utilize credit balances for calls or Audio Conferencing dial-out[^4].

## Telephone Number Acquisition and Quotas

Before acquiring numbers, at least 1 Calling Plan license must be assigned within the tenant[^10]. Number allocation is governed by license-based quotas:
* **User numbers**: A tenant can acquire subscriber numbers up to (Domestic licenses + International licenses) × 1.1 + 10, plus 1 number per Pay-As-You-Go license[^58]. Ported numbers do not count toward this allocation limit[^58].
* **Service numbers**: Toll and toll-free service number limits are tiered according to total Teams Phone and Audio Conferencing licenses, starting at 5 numbers for 1–25 licenses and reaching 1,500 numbers for 50,000 or more licenses (for example, 51 licenses provides a quota of 20)[^47].

Every Calling Plan number requires an emergency address, but attachment timelines differ by jurisdiction: US numbers have emergency addresses assigned concurrently with user assignment, whereas UK numbers require an address when acquired or ported[^14].

## Know Your Customer (KYC) Verification

Before acquiring or porting Calling Plan numbers, administrators must check whether KYC approval is required for the destination country[^18]. KYC is submitted within the Teams admin center under Voice > Service configuration > Know Your Customer and evaluated at the tenant level, with most reviews completing within 3 business days[^18][^20]. Administrators should wait until the KYC status indicates Approved before attempting to acquire or port numbers[^20]. The individual submitting KYC must use an individual email address tied to the verified business domain; submissions utilizing distribution lists, consumer email providers, or the tenant's default onmicrosoft.com domain are rejected[^19].

## Number Porting

Porting into Microsoft Calling Plans is supported across all countries and regions where Calling Plans are sold, and the Teams admin center porting wizard restricts selection to those destinations[^46]. A classic wizard operates across all regions, while a new wizard (labeled "US & Canada Preview") provides electronic signature capabilities for the Letter of Authorization in the US and Canada[^42].

### Eligibility and Grouping
Mobile number porting into Calling Plans is restricted to the US, Puerto Rico, and Canada[^41]. UK nongeographic numbers—including shared-cost ranges 0843, 0844, 0845, 0870, 0871, and 0872—cannot currently be ported into Calling Plans[^45]. Data lines (such as DSL/broadband), Universal International Freephone Numbers, and numbers from unsupported countries are ineligible for porting[^37]. Fax numbers can only be ported if converted into user numbers, as Calling Plans do not include native fax functionality[^37].

Numbers may be batched into a single wizard port order only if they share an identical service provider, account number, billing telephone number (BTN), number type, and service address[^43]. Requests involving 1,000 or more numbers must bypass the self-service wizard and be submitted directly through the Telephone Number Services (TNS) Service Desk[^38].

### Processing and Timelines
Port requests for the same losing carrier account are processed sequentially; overlapping requests on the same account trigger rejections from the losing carrier[^44]. Typical end-to-end port completion takes 7–14 days, extending up to 30 days[^39]. The US needs a minimum 5-day lead time, Canada 10 days, and the target port date cannot be more than 30 calendar days out[^39]. Losing carrier response SLAs are 3–5 business days in the United States and 5–7 business days in Canada, which reset if a rejected request is resubmitted[^40]. Microsoft recommends setting conservative port dates at least 15 business days out rather than aggressive schedules under 7 business days in the US or 10 business days in Canada[^34].

### Hybrid Transfers
Porting existing Direct Routing or Operator Connect numbers into Calling Plans requires submitting a request via the TNS Service Desk flagged as hybrid numbers[^36]. Number preassignment is prohibited during these transitions[^35]. In the US and Canada, existing user assignments can be retained if each number has an assigned Calling Plan license and emergency location prior to completion; in all other markets, numbers arrive unassigned[^35].

## See Also

* [Microsoft Teams Phone architecture and licensing](https://warmtransfer.net/knowledge/teams-phone-architecture)
* [Teams Operator Connect and Azure Communication routing](https://warmtransfer.net/knowledge/teams-operator-connect)
* [Teams Phone Direct Routing and SBC certification](https://warmtransfer.net/knowledge/teams-direct-routing)
* [Microsoft Teams shared calling and call delegation](https://warmtransfer.net/knowledge/teams-shared-calling)
* [Setting up dynamic emergency calling in Microsoft Teams](https://warmtransfer.net/knowledge/teams-dynamic-e911-setup)

## Applicability

Applies to: Microsoft Teams Calling Plans, Microsoft Teams Phone, and Microsoft Teams Phone Shared Calling. Deployments: multi-tenant. Sources checked 2026-09-24. The Teams admin center preview porting wizard is restricted to the US and Canada[^42]. Mobile number porting into Calling Plans is limited to the US, Puerto Rico, and Canada[^41]. Pay-As-You-Go Mexico plans cannot be acquired by US or Puerto Rico customers[^28].

## What remains uncertain

WarmTransfer's reading of the sources is that the printed PAYG Zone 2 list omits Croatia although Croatia appears in the Domestic (outside US/UK/CA) list, which suggests PAYG may not be offered to Croatian users, though the documentation does not state this explicitly[^32]. Whether other specific countries support Pay-As-You-Go options when omitted from printed zone lists is not covered by the sources below.

## Sources

[^1]: The per-country availability pages appear weakly maintained (2017 ms.date, NOINDEX, a 'five plan options' heading over two or four listed options), so their minute tables should be cross-checked with the Microsoft pricing page before quoting (inferred). Source: [Availability in the United States (U.S.)](https://learn.microsoft.com/en-us/microsoftteams/phone-reference/plan-availability/availability-in-the-united-states-u-s), Front-matter (ms.date, ROBOTS) and Calling Plans table row 'Minutes available for Calling Plans.'. Checked 2026-09-24.
[^2]: Communication Credits funds not used within 12 months of the purchase date expire and are forfeited. Source: [Set up Communication Credits for your organization](https://learn.microsoft.com/en-us/microsoftteams/set-up-communications-credits-for-your-organization), Step 2 > Considerations when setting up Communication Credits, first bullet. Checked 2026-09-24.
[^3]: If the Calling Plan was bought through a Cloud Solution Provider (CSP), the customer cannot acquire Communication Credits in the Microsoft 365 admin center; the CSP must fund them. Source: [What are Communication Credits?](https://learn.microsoft.com/en-us/microsoftteams/what-are-communications-credits), Do I need Communication Credits? > Your Calling Plan or Audio Conferencing plan is through a Cloud Solution Provider (CSP). Checked 2026-09-24.
[^4]: Each user must be assigned a Communication Credits license, including users on Microsoft 365 E5, or they cannot make calls or dial out from Audio Conferencing meetings against the credit balance. Source: [Set up Communication Credits for your organization](https://learn.microsoft.com/en-us/microsoftteams/set-up-communications-credits-for-your-organization), Step 3: Assign Communication Credits licenses to users. Checked 2026-09-24.
[^5]: Communication Credits cannot be purchased when the Calling and Audio Conferencing subscriptions, or the default billing account, use a Microsoft Customer Agreement (MCA) billing account; purchase requires a MOSA billing account set as default. Source: [What are Communication Credits?](https://learn.microsoft.com/en-us/microsoftteams/what-are-communications-credits), Do I need Communication Credits? > Customers without a Microsoft Online Subscription Agreement (MOSA) billing account. Checked 2026-09-24.
[^6]: Toll-free calls are billed per minute and require a positive Communication Credits balance. Source: [What are Communication Credits?](https://learn.microsoft.com/en-us/microsoftteams/what-are-communications-credits), Introductory bulleted list, second bullet. Checked 2026-09-24.
[^7]: Communication Credits pay for toll-free number usage (Audio Conferencing, auto attendants, call queues), meeting dial-out outside included pools, calls beyond a Calling Plan's included minutes, and all outgoing calls on a Pay-As-You-Go Calling Plan. Source: [What are Communication Credits?](https://learn.microsoft.com/en-us/microsoftteams/what-are-communications-credits), Introductory bulleted list of billing use cases. Checked 2026-09-24.
[^8]: If a one-time Communication Credits balance reaches zero, most calling scenarios stop working, including toll-free numbers; Microsoft recommends enabling auto-recharge. Source: [What are Communication Credits?](https://learn.microsoft.com/en-us/microsoftteams/what-are-communications-credits), Determine how many Communication Credits to purchase, first two paragraphs. Checked 2026-09-24.
[^9]: The country that governs a user's Calling Plan (and thus the minute pool) is the location on the user's license in Microsoft 365 admin center Active users, not the organization billing address in the Organization profile. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options, Note following the pooling paragraph. Checked 2026-09-24.
[^10]: At least one Microsoft Calling Plan license must be assigned in the tenant before phone numbers can be acquired from Microsoft. Source: [Get Microsoft Calling Plan telephone numbers for your organization](https://learn.microsoft.com/en-us/microsoftteams/manage-phone-numbers), Introduction, second paragraph. Checked 2026-09-24.
[^11]: The Domestic Calling Plan lets licensed users call numbers in the country where they are assigned in Microsoft 365, includes unlimited incoming minutes and includes outgoing minutes according to the license purchased. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options > Domestic Calling Plan, first paragraph. Checked 2026-09-24.
[^12]: The 'Microsoft Teams Domestic Calling Plan (customers outside US/UK/CA)' SKU is for organizations in a listed set of 29 markets (Austria through Switzerland, including Croatia, Hong Kong SAR, New Zealand, Singapore and South Africa) and can be assigned to users in any Calling Plan market. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options > Domestic Calling Plan, second bullet. Checked 2026-09-24.
[^13]: The 'Microsoft Teams Domestic Calling Plan (customers in US/UK/CA)' SKU is for organizations in the United States, Puerto Rico, United Kingdom and Canada, and can be assigned to end users in any market where Calling Plans are available. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options > Domestic Calling Plan, first bullet. Checked 2026-09-24.
[^14]: Every Calling Plan number needs an emergency address, but when it is attached varies by country: in the US at user number assignment, in the UK when the number is acquired from Microsoft or ported. Source: [Set up Microsoft Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/set-up-calling-plans), Step 5: Add emergency addresses and locations for your organization. Checked 2026-09-24.
[^15]: Teams Phone has four PSTN connectivity models: Microsoft Teams Calling Plan, Operator Connect, Teams Phone Mobile and Direct Routing. Source: [PSTN connectivity options](https://learn.microsoft.com/en-us/microsoftteams/pstn-connectivity), PSTN connectivity options, bulleted highlights. Checked 2026-09-24.
[^16]: For PSTN requirements in India, a separate India-specific Teams Phone license from a licensed Indian telecom operator (Operator Connect for India) is required. Source: [Teams Phone licensing](https://learn.microsoft.com/en-us/microsoftteams/teams-phone-licensing), Licensing Teams Phone - adding PSTN, paragraph on India. Checked 2026-09-24.
[^17]: The International Calling Plan includes both domestic and international outbound minutes, with international minutes usable to 196 countries, plus unlimited incoming minutes. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options > International Calling Plan. Checked 2026-09-24.
[^18]: Before acquiring or porting Calling Plan numbers, admins must check whether Know Your Customer (KYC) approval is required for the target country; KYC is reviewed at tenant level and most reviews finish within three business days. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), How to buy Calling Plans, Note. Checked 2026-09-24.
[^19]: The KYC submitter must use an individual company email on the verified business domain; distribution lists, free consumer email providers and the default onmicrosoft.com domain are rejected. Source: [Teams Phone Know Your Customer overview](https://learn.microsoft.com/en-us/microsoftteams/teams-phone-know-your-customer), Setting up KYC > Step 1: Verify email address and domain, Note. Checked 2026-09-24.
[^20]: Admins should wait until KYC status is Approved before acquiring or porting numbers; KYC is submitted in Teams admin center under Voice > Service configuration > Know Your Customer. Source: [Set up Microsoft Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/set-up-calling-plans), Step 2: Complete Know Your Customer verification, if required. Checked 2026-09-24.
[^21]: A Calling Plan license is needed only when Microsoft provides the PSTN; with another PSTN operator Microsoft requires no additional license beyond Teams Phone because PSTN costs are paid to that operator. Source: [Teams Phone licensing](https://learn.microsoft.com/en-us/microsoftteams/teams-phone-licensing), Licensing Teams Phone - adding PSTN. Checked 2026-09-24.
[^22]: Mexico has its own Domestic Calling Plan, which must be purchased separately. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options > Domestic Calling Plan, Note. Checked 2026-09-24.
[^23]: With Calling Plans, Microsoft is the PSTN operator: PSTN access, phone numbers, US emergency screening and telephone support come from Microsoft, backed by a 99.999% reliability SLA. Source: [PSTN connectivity options](https://learn.microsoft.com/en-us/microsoftteams/pstn-connectivity), PSTN connectivity options > Microsoft Teams Calling Plan bullet. Checked 2026-09-24.
[^24]: All users in the same country with the same Calling Plan share a pool of minutes (for example 100 US Domestic users at 3,000 minutes each share 300,000 minutes), and pooling applies only across identical Calling Plans. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options, paragraph after the decision questions. Checked 2026-09-24.
[^25]: A single Teams tenant can combine Calling Plans with other PSTN connectivity options (and multiple operators) for different users, locations and personas. Source: [PSTN connectivity options](https://learn.microsoft.com/en-us/microsoftteams/pstn-connectivity), Use more than one PSTN connectivity type. Checked 2026-09-24.
[^26]: Calling Plan, Operator Connect and Direct Routing all support user, Audio Conferencing and voice application numbers; Teams Phone Mobile supports user numbers only. Source: [PSTN connectivity options](https://learn.microsoft.com/en-us/microsoftteams/pstn-connectivity), PSTN connectivity options, Note; PSTN connectivity types comparison table. Checked 2026-09-24.
[^27]: Customers who bought the Calling Plan under a Microsoft Customer Agreement (MCA) pay for the previous month's outgoing minutes after use (post-usage billing) instead of prefunding. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), How to fund a Pay-As-You-Go Calling Plan > Purchase ... with a Microsoft Customer Agreement (MCA). Checked 2026-09-24.
[^28]: Pay-As-You-Go Calling Plan Mexico cannot be purchased by US or Puerto Rico customers. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Pay-As-You-Go Calling Plan > Pay-As-You-Go Calling Plan Mexico, Note. Checked 2026-09-24.
[^29]: Customers who bought the Calling Plan under a Microsoft Online Subscription Agreement (MOSA) must buy Communication Credits to fund a Pay-As-You-Go Calling Plan. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), How to fund a Pay-As-You-Go Calling Plan > Purchase Communication Credits. Checked 2026-09-24.
[^30]: The Pay-As-You-Go Calling Plan includes unlimited incoming minutes but no outgoing minutes; every outgoing call is charged by usage, through Communication Credits or post-usage billing (new commerce experience subscriptions only). Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options > Pay-As-You-Go Calling Plan, second paragraph. Checked 2026-09-24.
[^31]: Until a Pay-As-You-Go Calling Plan is funded, its users cannot make outgoing calls. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), How to fund a Pay-As-You-Go Calling Plan, first paragraph. Checked 2026-09-24.
[^32]: The printed PAYG Zone 2 list omits Croatia although Croatia appears in the Domestic (outside US/UK/CA) list, which suggests PAYG may not be offered to Croatian users; the page does not say so explicitly (inferred). Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Domestic Calling Plan second bullet compared with Pay-As-You-Go Calling Plan Zone 2 bullet. Checked 2026-09-24.
[^33]: Pay-As-You-Go Calling Plan is sold as Zone 1 (users in US and Puerto Rico, UK, Canada), Zone 2 (users in a listed set of European and Asia-Pacific/African markets) and a separate Mexico plan. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options > Pay-As-You-Go Calling Plan, three-option list. Checked 2026-09-24.
[^34]: Microsoft recommends a conservative target port date at least 15 business days after submission over an aggressive date under 7 (US) or 10 (Canada) business days. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Planning a number port event > Plan for port event date, Approaches 1 and 2. Checked 2026-09-24.
[^35]: 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. Source: [Transfer phone numbers to Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/transfer-phone-numbers-to-teams), What's the status of your port orders? > status table row 'Approved (FOCAccepted)'. Checked 2026-09-24.
[^36]: To move numbers from Direct Routing or Operator Connect into Calling Plans (hybrid numbers), customers contact the TNS Service Desk and flag the numbers as hybrid. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Numbers eligible for porting, last bullet of 'You can transfer'. Checked 2026-09-24.
[^37]: Data-line numbers (DSL/broadband), Universal International Freephone Numbers and numbers from unsupported countries cannot be ported, and fax numbers can be ported only for use as user numbers because Calling Plans provide no faxing. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Port request considerations > Numbers eligible for porting, 'You can't transfer' list. Checked 2026-09-24.
[^38]: Port requests of 1,000 numbers or more must bypass the Teams admin center wizard and be submitted manually through the Telephone Number Services (TNS) Service Desk. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Port request considerations > Large port requests. Checked 2026-09-24.
[^39]: A port order typically takes 7-14 days end to end and up to 30 days; the US needs a minimum 5-day lead time, Canada 10 days, and the target port date cannot be more than 30 calendar days out. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Planning a number port event > Plan lead-time for port request processing. Checked 2026-09-24.
[^40]: The losing carrier's response SLA to a port request is 3-5 business days in the United States and 5-7 business days in Canada, and it resets if a rejected request is resubmitted. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Port request considerations > What happens after you submit a port order request. Checked 2026-09-24.
[^41]: Porting mobile numbers into Microsoft Calling Plans is available only in the United States, Puerto Rico and Canada. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Port request considerations > Numbers eligible for porting, paragraph after the 'You can transfer' list. Checked 2026-09-24.
[^42]: 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. Source: [Transfer phone numbers to Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/transfer-phone-numbers-to-teams), Create a port order > tab 'Porting wizard - New (U.S. & Canada)' > Launch the port wizard; Authorize and submit. Checked 2026-09-24.
[^43]: One wizard port order can carry many numbers only if they share the same service provider, account number, billing telephone number (BTN), number type and service address; otherwise separate orders are needed. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Port request considerations > How many port requests do I need?. Checked 2026-09-24.
[^44]: Port requests for the same carrier account number are processed one at a time; submitting overlapping requests for one account causes the losing carrier to reject all but the first (or all). Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Port request considerations > How port requests are processed. Checked 2026-09-24.
[^45]: Microsoft does not currently support porting UK nongeographic numbers, including shared-cost 0843, 0844, 0845, 0870, 0871 and 0872 numbers, into Calling Plans. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Numbers eligible for porting, Note on United Kingdom. Checked 2026-09-24.
[^46]: Numbers can be ported to Microsoft Calling Plans in every country or region where Calling Plans are offered, and the Teams admin center porting wizard only shows those countries. Source: [What's a port order? - Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/port-order-overview), Port request considerations > Countries or regions that support number porting. Checked 2026-09-24.
[^47]: Toll and toll-free service number quotas are tiered by the tenant's total Teams Phone and Audio Conferencing licenses, from 5 numbers for 1-25 licenses to 1,500 numbers for 50,000 or more (for example 51 licenses yields 20). Source: [Get Microsoft Calling Plan telephone numbers for your organization](https://learn.microsoft.com/en-us/microsoftteams/manage-phone-numbers), How many telephone numbers can you get? > table rows 'Toll service number' and 'Toll-free service number'. Checked 2026-09-24.
[^48]: For Shared Calling resource accounts with service numbers, Communication Credits might be required if the calling plan is under MOSA or the tenant does not want to post-pay; Shared Calling is available in public clouds only. Source: [Plan for Shared Calling](https://learn.microsoft.com/en-us/microsoftteams/shared-calling-plan), Intro Note (public clouds) and setup step 5. Checked 2026-09-24.
[^49]: With Shared Calling, end users need only a Teams Phone license (no dedicated number or Calling Plan); if the shared resource account uses a Microsoft service number it needs a Microsoft Pay-As-You-Go Calling Plan license. Source: [Teams Phone licensing](https://learn.microsoft.com/en-us/microsoftteams/teams-phone-licensing), Licensing Teams Phone - for Shared Calling. Checked 2026-09-24.
[^50]: A Teams Phone license is a prerequisite for buying a Calling Plan; alternatively a Teams Phone with Calling Plan bundle (domestic or international) can be bought as one add-on. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), How to buy Calling Plans, steps 1-3. Checked 2026-09-24.
[^51]: Microsoft offers three Teams Calling Plan options: Domestic Calling Plan, International Calling Plan and Pay-As-You-Go Calling Plan. Source: [Microsoft Teams Calling Plans](https://learn.microsoft.com/en-us/microsoftteams/calling-plans-for-office-365), Calling Plan options (table). Checked 2026-09-24.
[^52]: 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). Source: [Transfer phone numbers to Microsoft Teams](https://learn.microsoft.com/en-us/microsoftteams/phone-number-calling-plans/transfer-phone-numbers-to-teams), What's the status of your port orders? > status table row 'Approved (FOCAccepted)', New number preassignment rule 4. Checked 2026-09-24.
[^53]: The UK availability page lists Pay-As-You-Go, a 120-minute Domestic plan, a 3,000-minute Domestic plan and an International plan (3,000 domestic or 600 international minutes per calendar month). Source: [Availability in the United Kingdom (U.K.)](https://learn.microsoft.com/en-us/microsoftteams/phone-reference/plan-availability/availability-in-the-united-kingdom-u-k), Calling Plans table, row 'Minutes available for Calling Plans.'. Checked 2026-09-24.
[^54]: UK Calling Plan users can call shared-cost numbers (44843, 44844, 44845, 44870, 44871, 44872) paid per minute from Communication Credits, but 449XX premium prefixes are not supported. Source: [Availability in the United Kingdom (U.K.)](https://learn.microsoft.com/en-us/microsoftteams/phone-reference/plan-availability/availability-in-the-united-kingdom-u-k), Calling Plans table, row 'Can make outbound calls to premium numbers?'. Checked 2026-09-24.
[^55]: For US and Canadian Calling Plan users, calls between the US and Canada count as domestic, unless dial-out policy restricts users to domestic-only, in which case cross-border calls are blocked. Source: [Availability in the United States (U.S.)](https://learn.microsoft.com/en-us/microsoftteams/phone-reference/plan-availability/availability-in-the-united-states-u-s), Calling Plans section, first Note. Checked 2026-09-24.
[^56]: In the United States the Domestic Calling Plan provides 3,000 minutes per user per calendar month, and the International Calling Plan provides 3,000 domestic or 600 international minutes, whichever is reached first. Source: [Availability in the United States (U.S.)](https://learn.microsoft.com/en-us/microsoftteams/phone-reference/plan-availability/availability-in-the-united-states-u-s), Calling Plans table, row 'Minutes available for Calling Plans.'. Checked 2026-09-24.
[^57]: Outbound calls to premium-rate numbers are not supported on US Calling Plans. Source: [Availability in the United States (U.S.)](https://learn.microsoft.com/en-us/microsoftteams/phone-reference/plan-availability/availability-in-the-united-states-u-s), Calling Plans table, row 'Can make outbound calls to premium numbers?'. Checked 2026-09-24.
[^58]: A tenant can acquire user (subscriber) numbers equal to its Domestic plus International Calling Plan licenses times 1.1 plus 10, plus one number per Pay-As-You-Go license; ported numbers do not count against this limit. Source: [Get Microsoft Calling Plan telephone numbers for your organization](https://learn.microsoft.com/en-us/microsoftteams/manage-phone-numbers), How many telephone numbers can you get? > table row 'User (subscriber) number' and Important note. Checked 2026-09-24.
[^59]: Direct Routing differs from Calling Plans in that it requires a contract with a third-party PSTN provider plus a certified Session Border Controller procured and managed by the customer, an integrator or a DRaaS provider. Source: [PSTN connectivity options](https://learn.microsoft.com/en-us/microsoftteams/pstn-connectivity), PSTN connectivity options > Direct Routing bullet. Checked 2026-09-24.
[^60]: Operator Connect differs from Calling Plans in that it requires a contract with a certified third-party operator, which supplies PSTN access, numbers, support and SLA, while users and numbers are still managed in Teams admin center. Source: [PSTN connectivity options](https://learn.microsoft.com/en-us/microsoftteams/pstn-connectivity), PSTN connectivity options > Operator Connect bullet; PSTN connectivity types comparison table. Checked 2026-09-24.