Add cloud PBX calling and audio conferencing to a Microsoft 365 environment while retaining a separately arranged PSTN calling service. M365 Business Voice without Calling Plan combines Teams phone-system capabilities with conferencing for organizations that do not want Microsoft Calling Plan as their external calling route. It supports a unified collaboration and business-calling experience without bundling carrier calling service into the entitlement. F698DBA2838E fits deployments that already use Direct Routing or another compatible external PSTN connectivity approach. Users can place and receive business calls through the organization’s chosen carrier connection while administrators manage users and calling configuration within Microsoft 365. The without-Calling-Plan packaging separates collaboration calling capabilities from the carrier service required to reach the public telephone network. Choose this version when telephony architecture requires carrier flexibility rather than bundled Microsoft PSTN minutes. It applies to U.S. tenants and should be assigned where the organization has planned its external calling connectivity. The service is an entitlement rather than a physical appliance; it does not by itself add handsets, gateways, telephone numbers, or carrier connectivity.