Teams Common Area Phones

A Common Area Phone (CAP) in Microsoft Teams is a shared, non-personal phone — a reception desk handset, a warehouse phone, a meeting room phone — that doesn't belong to one specific user. Teams Phone supports CAPs as a distinct licence and configuration model from regular user phones.

Common area phones are one device class in Teams Phone, licensed separately from users and routed through the same Calling Plans or Operator Connect or Direct Routing setup; they need the emergency calling configuration like any other endpoint, and share the fleet-management concerns of Teams Rooms.

What a CAP is

A CAP is a Teams-certified IP phone (Yealink, Poly, AudioCodes, others, mostly Android-based) signed in with a resource account rather than a user identity. The phone shows a simple dial pad, perhaps recent calls, a directory if configured — no user-specific features (no inbox, no meetings, no personal contacts).

Use cases:

• Reception desks in offices, hotels, clinics.
• Warehouse and shop floors where workers need an internal extension.
• Common areas like break rooms or lobbies.
• Phone-only kiosks at airports, hospitals, retail counters.

Licensing

CAPs use the Common Area Phone licence, a low-cost SKU that includes Teams Phone Standard for the resource account. Calling plan minutes (if outbound calling to PSTN is needed) require an additional Calling Plan or Operator Connect arrangement.

A typical reception phone:

• CAP licence for the resource account.
• Calling Plan or direct routing for outbound PSTN calls.
• Phone number assigned to the resource account.

For inbound-only use cases (extension dialling within the company), no calling plan is needed.

Configuration

Standard sequence:

1. Create a resource account in Entra ID with the Common Area Phone licence.
2. Assign a phone number in the Teams admin center if needed.
3. Configure a Common Area Phone policy in the Teams admin center — what features the phone has access to (call park, hot desking, meeting join, voicemail).
4. Sign the phone in with the resource account credentials. Modern CAP-certified phones support QR-code or device-code sign-in for easier deployment.
5. Test calls in and out.

Hot desking

A CAP can be configured for hot desking — a user signs into the phone with their own Entra ID for the duration of their visit, getting their personal contacts, voicemail, and Teams presence. When they sign out (or after a timeout), the phone reverts to its CAP identity. Useful for shared offices where the same physical phone is used by different people across the day.

Operational considerations

• Resource accounts don't expire — Microsoft 365 lifecycle policies that disable inactive users can break CAPs if not exempted.
• Phone firmware updates are managed in the Teams admin center; keep on the latest firmware.
• Reset to factory if a CAP is repurposed for a different room — the old resource account stays on the phone otherwise.

For organisations rolling out Teams Phone alongside Calling Plans / Operator Connect / Direct Routing, CAPs handle the shared-phone scenarios that personal user licences don't fit.