Sound File Format for Active iPBX
To edit your Sound file you will need to download Audio Converter Software.
Audacity is a free open source solution which can be downloaded HERE
Open Audacity and select your file from your PC by selecting file.
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Load your sound file
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From the drop down change the Project Rate to 8000 (Hz)
Then from the file drop down select Export Audio
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Name the file and change the extension to .WAV
Make sure the Header is WAV and the encoding U-Law.
Then click save.