AASTRA MX-ONE V4 with Exchange 2010 Quick Setup Guide - Manual (Page 19)

Quick Setup Guide
Doc. No. ASE/MXO/PLM/ 0141/ EN Rev.C Date: 01.12.2011 19/34
3.2.2.4.2 Enable the Unified Messaging
To enable a Unified Messaging role for a user, click in the user and in the action pane, Enable Unified
Messaging.
Select the UM Mailbox Policy.
Fill out the PIN settings, if it is needed.
Click Next and in the extension configuration choose between automatically or manually mailbox
extension.
Click Next and follow the instructions to complete the operation.