This menu is accessed from the System page by selecting Create Calling Lists | Disallowed Lists.

This menu is accessed from the Admin Tasks list by selecting System | List Management.

Each disallowed list contains external telephone numbers that users who are members of the list are not allowed to dial.

Numbers in the disallowed lists of which a user is a member are overridden if they also appear in the allowed numbers lists, emergency number list of which the user is a member and also by marked system speed dials.

There are eight lists, each containing up to 10 numbers. Each number can use the telephone dialing digits 0 to 9, *, # and can be up to 28 digits long. You can also use the ? character as a single digit wildcard.