A button set to this function allows the user to turn privacy on or off. When on, other extensions are not able to bridge into the user's calls.

If an extension already has a button set to this function, creating another button with this function automatically clears the setting from the existing button.

This function does not require a button that includes lights. However, if set on a button with lights, the green LED will match whether the function is on or off.

If the user has this feature enabled, removing this button will turn the feature off.

To access this function without a programmable button:

On DS and ETR phones, press FEATURE and then dial 07.

On BST phones, press FEATURE and dial 83.