Select a 16kHz codec; most are 8kHz (e.g. alaw, mulaw and gsm are all 8kHz). Ensure that is used end to end on the call. Select the file type corresponding to that codec, for the recording.
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Select a 16kHz codec; most are 8kHz (e.g. alaw, mulaw and gsm are all 8kHz). Ensure that is used end to end on the call. Select the file type corresponding to that codec, for the recording.