Microphone and Speaker devices
IPFX Director Softphone uses Microsoft DirectX 8.0 to access the microphone and speaker devices and is therefore DirectX dependant. IPFX Director Softphone install program will install Microsoft DirectX 8.0 if your computer does not have at least this version.
IPFX Director Softphone can use any microphone and speaker device that functions correctly with Microsoft DirectX 8.0 or later. You can test if a device is supported by Microsoft DirectX 8.0 by running the DirectX Diagnostic Tool that Microsoft supplies (press Start, then Run, type "dxdiag" and press enter). This program can give you information about the audio devices installed in your computer.