A count of the number of false carrier events
during IDLE in 100BASE-X and 1000BASE-X links.
For all other MAU types, this counter will
always indicate zero. This counter does not
increment at the symbol rate.
It can increment after a valid carrier
completion at a maximum rate of once per 100 ms
for 100BASE-X and once per 10us for 1000BASE-X
until the next CarrierEvent.
This counter can roll over very quickly. A
management station is advised to poll the
ifMauHCFalseCarriers instead of this counter in
order to avoid loss of information.
Discontinuities in the value of this counter can
occur at re-initialization of the management
system and at other times, as indicated by the
value of ifCounterDiscontinuityTime.