Last Number Dialed
The Last Number Dialed feature redials the same number a user just dialed. This happens even if the user accessed an abbreviated dialing list for the previous call. However, if the last dialed string includes any special characters, these characters are ignored by last-number-dialed call. Examples of special characters might be indefinite wait, mark, pause, suppress, wait and so on.
If the previously-called number is in an AD privileged list, and if you have restricted permission to dial the number because of the class of restriction, you cannot redial the number using Last Number Dialed. To redial the number, you have to access the AD privileged list again.