Select Start | Programs | IP Office | IMS Administration Tool.
On the menu bar, select Server and Add and enter the IMS Server name or browse for the server.
Once the server is added, the name will appear in the left hand Window with a [+] plus icon. Expand the [+] icon to show configurable options.
Highlight Integrated Messaging Associations. After a few moments the voice mailboxes will appear in the right-hand window.
Select a voice mailbox to configure and double-click it to see it properties.
In the Associated Email Address field, select Change and select the relevant email address of the associated user.
If the mail settings need to be different from the default settings, select the User Properties tab and configure as applicable and select OK.
Once complete, synchronize the Mailboxes by selecting on the Synchronize Mailboxes Icon, or Selecting Mailboxes and Synchronize on the menu bar.
Close the IMS Administration tool.
Make a call to one of the users just associated and leave a message in their voicemail mailbox. A short while after hanging up a message should appear in their user’s mailbox.