This is the current quality of the link as declared by the local Ppp
entity's Link-Quality Management modules. A value of good indicates
that LinkQualityMonitor configStatus is enabled and Link quality is
above Link qualityThreshold. A value of bad indicates that
LinkQualityMonitor configStatus is enabled and Link quality is not
above Link qualityThreshold. A value of notDetermined indicates that
LinkQualityMonitor configStatus is enabled and the quality of the link
has not been calculated yet or LinkQualityMonitor configStatus is
disabled.