All your voice mails will be cataloged on a web page with caller ID and the date and time that each message was left. It can store up to 240 messages for up to 15 days. Under the "Play" column when you click the message it will bring up the Windows Media Player and play the message that the caller left for you right through your computer speakers. If you have multiple messages to check it is much easier to check them this way rather than checking them through your touch tone phone.