Upload a wav using a lower volume choice and see if same issue using Music Manager and/or change the music source.
Need to be careful of impedance and
volume on the source or you could damage the BCM music side of things if not too late.
Also try the other MOH port as there is the jack on the front or the pair on the amp cable.
Music source specifications
Ensure that the music source follows these guidelines:
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Nominal input impedance is 3.3 kilohms.
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Nominal sensitivity of this interface returned to digital encoded PCM is -22 dBm0 for a 0.25 V rms input signal.
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The input is limited so that the encoded analog content at the digital interface to the network
does not exceed -12 dBm when averaged over any three-second interval.
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The maximum non-clipped input level is 1 V rms.
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The interface is protected against ringing cross.
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