"Missed calls" refer to calls that were not answered, either because the called user was unavailable at the time or because the call went unanswered. Typical functions of software in the "missed calls" area include:
Notifications: The software notifies the user of missed calls through on-screen notifications, email, or SMS.
Call history: The software logs missed calls and stores information such as call time, caller number, and call duration for later review.
Callback function: The software allows the user to directly call back missed calls from the call history.
Marking missed calls: The software marks missed calls in the call history or other overviews to make them easily identifiable.
Call forwarding: The software provides the option to forward missed calls to alternative numbers or voicemail.