Some of their products include a turnkey hospitality server which helps guest and staff communication, wake up calls, and a PMS interface to most any PBX. DuVoice products work on a wide variety of telephone switch equipment in both the general messaging and hospitality messaging markets. Their products are Windows XP and Server Based and may also include voice processing hardware from Dialogic, the leader in the voice processing industry. DuVoice LINK-DID is a high quality product made by this manufacturer