You can add the details of a caller who left you a voicemail message to your Personal directory.
To add a voicemail caller to your personal directory:
1.Click on Main.
2.View the 
Messages gadget.
3.Click the add 
icon in the message details.
a.Type the details of the contact in the Add New Contact window.
•If the Work phone setting matches the extension number of a telephone system user, the directory contact displays the user status of the user. This applies even if another number is currently selected as the Primary phone.
•You can use the Group list to select which of your personal contacts tabs the contact should appear on.
•You can add the gmail address and the Office Communications Server (OCS) address of the contact. After you add the addresses you can start an email or initiate a chat from the one-X Portal directory.
b.When finished, click Save.