This object specifies the falling threshold for the in-use
gauge corresponding to this IP address pool, which must have
a value less than or equal to the corresponding instance of
ciapPoolThresholdRising.
If this value is '0' and the corresponding instance of
ciapPoolThresholdRising is '0', then the IP address pool
manager does not monitor this IP address pool for threshold
crossing events.
The value of ciapGlobalThresholdFalling.0 specifies the default
value for newly created instances of this object.
For more detail, see the description of IP address pool
threshold monitoring provided by the descriptive text associated
with the MODULE-IDENTITY statement.