The contacts directory contains system directory number, systems users and hunt groups and your own personal contacts.Not available on 1403 phones.
This menu is accessed by pressing the 
key. It is used to display names and numbers that you can then use for making calls.
The directory includes names stored for use by all users, names stored for use by just you and the name and numbers of all the other users and groups on the phone system.
•Make a Call from the Directory