Office 365 Tenant Licenses
In order to be able to use Microsoft Teams with Nconnect Voice, one of the Microsoft Office 365 license is required for each user (i.e. Office 365 E1, E3, E5, etc.). For more information, please visit Microsoft website, or contact your Microsoft Partner.
Note: The configuration of the Microsoft Teams application is not in charge of the NFON/DTS support team.
FQDN-Domain license required
For the FQDN domain registration "KXXXX-01.customers.teams-pbx.cloud" you still need at least one E1 license on top.