About this article
Microsoft official Teams Phone license information has been verified as of September 17, 2026.Verification Status: 📘 Microsoft official information confirmed, actual hardware not tested
Microsoft Teams Phone is a cloud telephony feature that allows Teams to be used as a corporate telephony infrastructure. It combines telephone system functions such as extensions, hold, and transfer with Calling Plans, Operator Connect, or Direct Routing to connect to the PSTN.
Important considerations for E3/E5 and Teams SKUs
Current licenses must be checked by distinguishing between Teams-included and Teams-excluded SKUs. According to Microsoft official documentation,examples include combining the Phone System rights of Microsoft 365 E5 (including no-Teams versions) with Teams Enterprise,while legacy M365 E5 includes Teams and Phone System. For E3 series, verify additional rights such as Teams Phone Standard. Having E5 does not necessarily mean that PSTN calling charges are fully included.
Try first: View call settings without administrative changes
Open Calls-related items from Teams settings and verify how assigned numbers, voicemail, and forwarding settings appear to users.
Check here
Verify whether a phone number is assigned and if the paths for incoming, missed, and voicemail calls are clear.
Change one setting
Change one low-risk setting, such as the voicemail greeting, within the verification user's own permitted range, and confirm that it takes effect. Do not start with administrator routing or number assignment.
For business use
Design by separating the "Teams Phone license" and "external line connection method". Organize requirements for existing main numbers, emergency calls, call recording, contact centers, failover routing, and site numbers in advance.
Points for administrators to check
Verify Teams-included/excluded SKUs, Teams Phone rights, PSTN connection methods, phone numbers, Emergency Calling, Calling Policies, Voice Routing, call recording and retention, and regional availability conditions.
Microsoft official information
https://learn.microsoft.com/en-us/microsoftteams/teams-phone-licensing
https://learn.microsoft.com/en-us/microsoftteams/cloud-voice-landing-page
Teams Phone does not mean "telephony is complete with E5." Separating the three layers of Teams usage rights, Phone System, and PSTN connectivity helps reduce selection errors.
