Yealink SIP T2 Series Provisioning Manual page 58

Yealink IP Phones Auto Provisioning Guide
A sample audio file loaded is shown as below:
4. Select the segment of ring tone you chosen and copy the audio waveform.
5. Select File->New to create a new file, set the sample rate as 8000, the channels as
Mono, and the resolution as 16-bit.
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