NT Compatible http://www.ntcompatible.com/index.php Last 20 items on NT Compatible Esselbach Storyteller CMS System 56K Voice Faxmodem External 5605 (5) http://www.ntcompatible.com/56K_Voice_Faxmodem_External_5605_c2884.html This product has been tested on the following operating systems: Windows 2000 and has a average rating of 5<br /><br />The last rating (5) has been submitted on 2000-04-01 12:00:00 by Anonymous running Windows 2000:<br />Yes... but. There is no distinctive ring support, at<br>least as far as I've been able to determine. This is either up to hardware<br>vendor or the voicemail software vendor to update and resolve.