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Voice modem disabled with Windows 10 version 1903 or 1909.

After updating Microsoft Windows 10 to release version to 1903 or 1909, you find that your voice modem disabled. Applications that use TAPI voice functionality are no longer functioning. Audio playback and recording to the voice modem no longer work. Symptoms: Software is not detecting the modem as a compatible voice modem (voice modem disabled, […]

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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. […]

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