More details:
Feature 981 will get you into the mailbox. You will usually get a prompt for a password. If you don't know the password, you will need to reset it at the voice mail system. A password is 4 digits long.

If you get the message "Log:" or the prompt "Please enter your extension and password," you will need to enter your extension and password as one long number: foir extension 123 password 2222, you'd enter 1232222.

If you don't have a voice mail system and the message is displayed in error, Feature #65 should clear it up.