This object indicates whether this specific reference unit is configured to actually read and use the in-band SSM quality signaling from its upstream source, or whether that signaling is ignored, in which case the unit typically relies on a forced/manual quality level instead. An admin connecting to an upstream provider that doesn't reliably send correct SSM codes might disable this on that specific unit and configure a forced quality level instead, to prevent bad upstream signaling from disrupting local reference selection. For example, disabling this on a unit connected to a legacy provider network known to transmit incorrect SSM codes protects the local selection algorithm from being misled.