To change your greetings on ANY campus/center phone line (You may also follow the prompts instead of doing the following):

1. Dial 2000 *
2. Dial ID (your extension you want to change the greeting on) then #.
3. Dial PIN then #.  Password may be default (091806) or another password provided to you. If you do not know your password contact the helpdesk.  
4. Press 4 for setup options.
5. Press 1 to create/change the greeting.
6. Press 1 to record the current greeting.
7. Press 3 to edit other greetings (if there is more than 1 active greeting)
8. Press 4 to hear all greetings
9. Speak the greeting.  Prepare it ahead of time so it will sound professional.
10. Press * to exit
11. Dial your extension to check your message is the way you want. 

To change your greetings on your own phone, press the Messages button and your Pin then # and follow step 4 – 10 above.