An entry (conceptual row) in the
'cGgsnExtHistCallRateStatsTable'. Each entry represents a
set of historical call rate statistics sampled at different
instance of time.
The agent creates an entry in to this table at the end of
each interval set in cGgsnExtCallRateInterval and the
existing entry in the cGgsnExtCallRateStatsTable will be
inserted into the history table and the
cGgsnExtCallRateStatsTable will be updated with new values.
The agent deletes an entry from the table when the call
rate history limit indicated by the object
cGgsnExtCallRateHistory is reached. The oldest entries
will be removed when the limit is reached.