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Go to the Exchange Admin Center on portal.office.com and open Unified Messaging .
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- Name: generic name
- Extension length: 5
- Dial plan type: SIP URI
- VoIP security mode: Unsecured
- Country Region Code: 31 (2 digit country code, sample is for the netherlands)
Step 3
Enable users for O365 UM. In the Exchange Admin Center, go to Users and select your user.
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Modify the policy you want to add to the user. And change the tenant name and server address like below. Click save when done. Change the stars in the tenant name to your tenant name.
What is my tenant name?
The tenant name can be found as the default .onmicrosoft.com address. When creating a tenant in Office 365 the first address assigned before adding domains is the tenant name. Your .onmicrosoft.com tenant address should be specified in your microsoft administration portal.
(optional) Office 365 Unified Messaging
Step 3
Open the users in Users >> Users and select Hosted Voicemail
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