serVonic ixiFax and ixiVoice
"With Unified Messaging, features like Fax, Voice Mail, SMS and Mobile Access are integrated in your normal Messaging, e.g. Microsoft Exchange Server or Lotus Domino. Because of the flexible and standard-based architecture, you can apply IXI-UMS as unified messaging solution or as pure Fax Server, which you can upgrade with further IXI-UMS features, channels or users any time. http://www.servonic.com/EN_servonicFrame.php3?URL1= TELPHONY"