Don’t receive Teams Voicemail in Outlook

We have just setup hybrid Exchange ( Exchange 2016) and all users are still on prem.  OAuth is set up and working for calendar access. Voicemail messages from Teams internal calls are not delivered to Outlook.  We have not utilized Exchange Unified messaging in the past.  Is there something needed to set up Teams Voice Mail delivery to Outlook? (I understand that the messages are not available in Teams until the mailbox is pushed to the cloud)

Thanks!