Topic Last Modified: 2011-05-15

Lync Server Enterprise Voice uses the Exchange UM infrastructure to provide call answering, call notification, voice access (including voice mail), and auto-attendant services.

Call Answering

Call answering is the taking of voice messages on behalf of users whose calls are not answered or are busy. It includes playing a personal greeting, recording a message, and submitting the message to the Exchange Hub Transport Server to be queued for delivery to the user's mailbox, which is stored on the Exchange mailbox server.

If a caller leaves a message, the message is routed to the user's Inbox. If a caller chooses not to leave a message, a missed call notification is stored in the user's mailbox. Users can then access their Inbox by using the Microsoft Outlook messaging and collaboration client, Outlook Web Access, the Exchange ActiveSync technology, or Outlook Voice Access. The subject and priority of calls can be displayed in a way similar to that of email.

Outlook Voice Access

Outlook Voice Access enables an Enterprise Voice user to access not just voice mail, but also the Exchange inbox, including email, calendar, and contacts from a telephony interface. The subscriber access number is assigned by an Exchange UM administrator.

Auto Attendant

Auto attendant is an Exchange UM feature that can be used to configure a phone number that outside users can dial to reach company representatives. In particular, it provides a series of voice prompts that assist an external caller in navigating a menu system. The list of available options is configured on the Exchange UM server by the Exchange UM administrator.

Fax Services

Exchange UM includes fax features, which enable users to receive incoming faxes in their Exchange mailboxes. For details, see "Unified Messaging" in the Microsoft Exchange Server documentation at

Fax services provided by the Exchange UM server are not available in Lync Server deployments that are integrated with Microsoft Exchange Server 2010 or Exchange Server 2010 with latest service pack.