private QualityIndicator ConvertToNamedQuality(VATRPCall call)
        {
            var rating = (float)LinphoneAPI.linphone_call_get_current_quality(call.NativeCallPtr);

            if (rating >= 4.0)
            {
                return(QualityIndicator.Good);
            }
            if (rating >= 3.0)
            {
                return(QualityIndicator.Medium);
            }
            if (rating >= 2.0)
            {
                return(QualityIndicator.Poor);
            }
            if (rating >= 1.0)
            {
                return(QualityIndicator.VeryPoor);
            }
            if (rating >= 0)
            {
                return(QualityIndicator.ToBad);
            }
            return(QualityIndicator.Unknown);
        }