@MiguelMendozaMico-1884
A single organization can use both options at once. Direct Routing supports users who have the additional license for the Microsoft Calling Plan. However, a hybrid voice solution might be best for your organization if:
1)Microsoft Calling Plan is not available in your country.
2)Your organization requires connection to third-party analog devices, call centers, and so on.
3)Your organization has an existing contract with a PSTN carrier.
For more details about direct routing requirements, you can refer to:
https://learn.microsoft.com/en-us/microsoftteams/direct-routing-plan
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