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Fax: Bad signal quality

This event is generated if the fax modem in the gateway receives a distorted analog fax signal.

The fax demodulator generates an eye pattern from the fax signal that shows amplitide and phase. The quality of the eye pattern is the EQM, a value between 0 ( good ) and 15 (bad). Values from 10 to 15 generate this event. Since V9HF16 the EQM level have a wider range, the new limit is 80. Changing the fax transmit level or the receive level of the analog interface ( if present ) should improve the EQM.

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