This read-write setting, available on ports configured with autodial activation type, specifies whether extended dial digits forwarded to the remote unit come from a map or from the user. It determines the source of the extra digits appended after the primary speed-dial number, letting either a preconfigured mapping table or the caller's own keypad input supply them. For example, a courtesy phone that lets a caller add an extension after the main autodial number would have this object set to user(2) so digits typed by the caller are what gets forwarded.