Which feature of IPO is designed to handle calls when a user is not available?

Voicemail is designed specifically to handle calls when a user is not available. This feature allows callers to leave a recorded message when the intended recipient cannot answer the phone. It serves as a crucial communication tool, ensuring that important messages are not missed, and provides a way for users to retrieve voice messages at their convenience.

Call Forwarding, while related to managing incoming calls, directs calls to another number or extension when the user is unavailable rather than offering a messaging service. Do Not Disturb allows users to block incoming calls temporarily, which still doesn’t provide a means for a caller to leave a message. Auto Attendant assists in directing incoming calls to the appropriate recipient or department, but it does not offer a solution for message storage. Therefore, voicemail stands out as the primary feature intended for users who cannot take a call directly, facilitating effective communication even in their absence.