Microsoft 365 E5 licenses are held by a business. The business makes use of Microsoft-provided phone numbers. Calls cannot be sent to external numbers by an auto attendant. What ought you to do?
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A
Configure external sharing settings from Azure Active Directory.
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B
Assign a phone system license to the associated resource account.
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C
Assign a new auto-attendant number.
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D
Purchase and assign an international calling plan to the associated resource account.