To Use your Personal Address Book on your Cisco VOIP Phone:

1. On your Cisco VOIP phone, press the button that looks like a book. 
2. Enter your UserID (for UMBC users, use your UMBC "username" and for non-UMBC users use your email address) and the phone PIN (not your voicemail passcode). If you need to set up your phone's PIN, follow the steps in this wiki: Creating a PIN for your Cisco VOIP Phone
3. Select Personal Address Book. 
4. Press Submit to view the list or enter a search term to perform a search for a contact. 

NOTE:  If you access your Personal Address Book on a shared VOIP phone, anyone can use your Personal Address Book until you logout of your Personal Address Book on that phone.