Advanced Call Center - Version 4.4 An advanced, yet simple-to-use software answering machine for your voice modem. All the features you'd expect are supported: call monitoring and logging, Caller ID with pop-ups and voice alerts, "white" and "black" lists, customizable and personalized greetings, and conversation recording. ACC can send call notifications to your pager and voice messages over e-mail. It can also block certain types of incoming calls, even without Caller ID information. ACC provides tight integration with sound cards and doesn't require an extra speaker attached to the modem. Lastly, ACC looks just as great as it works!