Finally the last two digits characterize the extension.
All telephones have direct access to the Lisbon Metropolitan area.
The Interstate and International access is blocked on all telephones. All visitors pay their telephone expenses in full. Thus, besides yourself, only the Executive Director and Dr. Jorge Naves know what PIN codes are available. With this Service your calls may be placed from any extension in the Interdisciplinary Complex. This way, every two months, you will receive a complete list of all the telephone calls you made using your secret code regardless of the extension you used to make them.