02 · Licensing
Attendants and queues fail closed when the resource account has the wrong SKU, or had the right SKU removed in two steps.
Each auto attendant or call queue that answers needs a resource account with a Microsoft Teams Phone Resource Account license, even when you do not assign a phone number. Tenants with Teams Phone get a zero-cost allotment, and you still have to acquire those licenses.
Do not assign Teams Phone Standard to a resource account. If you must swap, remove the old license and add the resource-account license in the same license change. A two-step swap can leave the voice app broken. External transfer, callback, and on-behalf outbound also need pay-as-you-go or communications credits.
Use the Teams Phone Resource Account license. Swap licenses in one change, and fund outbound if the app dials the PSTN.
Resource accounts get the Teams Phone Resource Account license, not Teams Phone Standard.
If it fails: Queues die after Standard is removed and the new license is added in a second save.
A colleague reports: Queues die after a two-step license swap. Where do you start?
Queues die after a two-step license swap. Assign this license. If you swap off Teams Phone Standard, remove and add in the same license change. Source: https://learn.microsoft.com/en-us/microsoftteams/teams-add-on-licensing/virtual-user accessed 2026-10-14.
Which description of Pay-as-you-go Calling Plan is accurate?
A Calling Plan billed on use. Also the funding pattern, with communications credits, for some voice-app outbound calls. External transfers from a queue are not free just because users have Direct Routing. Source: https://learn.microsoft.com/en-us/microsoftteams/aa-cq-reference-prerequisites-licensing accessed 2026-10-14.
A colleague reports: Overflow to a mobile number fails and the user Calling Plan is blamed. Where do you start?
Overflow to a mobile number fails and the user Calling Plan is blamed. Fund the resource account when the attendant or queue sends calls to an external number, uses callback, or places on-behalf calls. Source: https://learn.microsoft.com/en-us/microsoftteams/aa-cq-reference-prerequisites-licensing accessed 2026-10-14.
Around the call: compliance recording, workforce management, emergency location, analytics, CRM screen pop, and an agent with a human escape. Each one has its own failure.
Queues die after Standard is removed and the new license is added in a second save.
Cisco CUBE is one of the SBC families named in this lab’s certification lesson. A certified release can be the Direct Routing SBC between Unified CM and Teams.
The tenant still needs a verified domain on the SBC FQDN, and the user still needs Teams Phone. The studio translator does not open a live AXL session. Confirm the current certified release before you build.
Teams Phone and Webex Calling are separate clouds. This lab does not describe a feature that registers a Webex Calling user into a Teams tenant.
A number move is usually a carrier port, a certified SBC, or a meetings interop product. Confirm before relying.
Unified CCE stays the ACD until you migrate it. Microsoft’s contact-center articles name Connect, Extend, and Unify. They do not name a UCCE connector in the notes this lab cites.
Voice into Teams is still Direct Routing or Operator Connect. The routing script stays on the contact-center product you bought. Confirm the vendor’s current model. Source: https://learn.microsoft.com/en-us/microsoftteams/teams-contact-center.
Copilot Studio, Azure Communication Services, and Graph are later tracks in this lab. Treat any uncited limit as confirm before relying.
Opened 2026-10. A row marked confirm did not open. Wikipedia is background. The Teams blog row is the community index.
