Voicemail - Changing your pin
Once you get into voice mail using the default pin: 1234 (or try the last 4 digits of their phone number)
To change the pin:
Press the 4 key to get into setup options
Then press the 3 key for personal settings
Press 1 to change PIN (minimum 4 digits)
Enter your new PIN followed by #
Re-enter new PIN and # for confirmation