This is done in Unity Connection, not UC Manager. You can provide calendar access through the Single Inbox feature.
In Cisco Unity Connection version 8.5, we gathered several existing features and a new feature under the rubric of unified messaging. These features include:
•Synchronization of voice messages in Connection and Exchange mailboxes (also known as single inbox—this feature is new in Connection 8.5)
•Text-to-speech (TTS) access to Exchange email
•Access to Exchange calendars, which allows users to do meeting-related tasks by phone (for example, hear a list of upcoming meetings, or accept or decline meeting invitations)
•Access to Exchange contacts, which allows users to import Exchange contacts and use the contact information in personal call transfer rules and when placing outgoing calls by using voice commands
•Notification of upcoming Cisco Unified MeetingPlace meetings on the phone
•Scheduling and joining of MeetingPlace meetings
•Transcription of Connection voice messages (SpeechView)
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