These are the general settings for the auto attendant.

Maximum Inactivity: Default = 8 seconds. Range = 1 to 20 seconds.
This field sets how long after playing the prompts the auto attendant should wait for a valid key press. If exceeded, the caller is transferred to the operator (the first extension in the system).

Menu Prompt Usage: Default = Each menu uses own prompt.
Each time profile option used by an auto attendant can have its own set of actions and therefore may require a separate actions prompt to be played after the appropriate greeting prompt. The settings Each menu uses own prompt does that. Alternately one of the menu options can be selected as the menu option prompt played at all times of day.

Dial By Direct Number: Default = On for the first default auto attendant. Off for other auto attendants.
This setting affects the operation of any key presses in the auto attendant menu set to use the Dial By Number action.

If selected, the key press for the action is included in any following digits dialed by the caller for extension matching. For example, if 2 is set in the actions to Dial by Number, a caller can dial 20 for extension 20.

If not selected, the key press for the action is not included in any following digits dialed by the caller for extension matching. For example, if 2 is set in the actions to Dial by Number, a caller must dial 2 and then 20 for extension 20.

Dial by Name Match Order: Default = Last then First.
Determines the name order used for keys set to the Dial by Name action. The options are First then Last or Last then First.