This is the default mode used and matches the features of Voicemail Lite.
This is IP Office Intuity emulation mode. Intuity is a mailbox interface used on a range of Avaya voicemail systems. In Intuity emulation mode, the Voicemail Pro support a range of Intuity features but not all Intuity features. For full details of those Intuity features supported by Voicemail Pro, refer to the "IP Office Intuity Mailbox Users Guide".