Plan to Migrate UM-Enabled Mailboxes

 

Applies to: Office 365 for enterprises

Topic Last Modified: 2011-11-23

If you want to migrate UM-enabled mailboxes from your on-premises Exchange 2007 or Exchange 2010 organization to the cloud, you have to decide which migration method best supports the end result you want. Let's look at the options:

The following table summarizes the key differences for UM between the three migration methods.

 

Migration needs Hybrid deployment Staged Exchange migration Cutover Exchange migration

Migrate the user’s voice mail PIN

Yes

No

No

Migrate UM-enabled mailboxes

Yes

No

No

Require an additional pilot number and PBX hunt group?

Yes

Yes

No

All migration methods support migrating the voice mail, voice mail greetings, and spoken name for each user.

Note   If your on-premises mailboxes aren't UM-enabled, but you intend to deploy UM in the cloud, migrate the mailboxes to the cloud before you enable UM on them. If your on-premises mailboxes are UM-enabled, but you don't intend to deploy UM in the cloud, make sure to disable UM on the mailboxes before you migrate them to the cloud.

If the mailboxes you are migrating are enabled for unified messaging (UM) and you are using cutover Exchange migration   You have to disable UM on the mailboxes before you migrate them. You can then enable UM on the mailboxes after the migration is complete. If you want mailboxes to remain UM-enabled throughout the migration process, follow the instructions for UM migration that support a hybrid deployment.

 
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