You can configure your press1 account to send you an email with call details every time a call arrives.
It's often useful to be alerted every time a call arrives. Your office may be closed but you can still see the caller id of the caller, others may also neglect to leave a voice message.
You can set up a special inbox on your email client to act as an offline log of all calls. Alternatively process the caller information emails to your CRM application or database.