A user is required to answer voicemail for two lines but would like them to be filtered to only one mailbox. How can you accomplish this request?

Cisco Unity Connection does not support assigning multiple independent mailboxes to a single user account - each user has one mailbox.

An alternate extension is a secondary directory number assigned to an existing Unity Connection user account. When a call to that extension goes unanswered, the system routes the voicemail to the same mailbox as the primary extension, satisfying the requirement of two lines feeding one inbox without creating additional accounts or mailboxes.

A shared mailbox is intended for group or departmental use where multiple users access the same mailbox, which does not match the single-user scenario described.

An interview handler presents callers with a series of recorded questions and records their responses; it is not a mechanism for routing extensions to a mailbox.