Unimodem Modem Audio sound driver missing in Windows 10
Microsoft Windows 10 Version 1511 (Build 10586 and later) have a Unimodem problem that prevents voice modems from installing the Unimodem Full Duplex or Half Duplex Audio Driver. This prevents some TAPI Voice applications from properly detecting the modem as a voice modem, and/or prevent the modem from playing back any audio to the modem. […]