This object specifies the type of periodic configuration
for this alert group.
This object is only instantiated when the value of
corresponding instance of ccmPeriodicAlertGroupEnable
is 'true'.
A value of 'daily' indicates that periodic message will be
generated everyday at time specified by the objects
ccmPeriodicAlertGroupHour and ccmPeriodicAlertGroupMinute.
A value of 'weekly' indicates that periodic message will be
generated once every week on the day specified by the object
ccmPeriodicAlertGroupDayOfWeek and at the time specified
by the objects ccmPeriodicAlertGroupHour and
ccmPeriodicAlertGroupMinute.
A value of 'monthly' indicates that periodic message will be
generated once every month on day of the month specified by
the object ccmPeriodicAlertGroupDayOfMonth and at time
specified by the objects ccmPeriodicAlertGroupHour and
ccmPeriodicAlertGroupMinute.
A value of 'hourly' indicates that periodic messages will be
generated once every hour. ccmPeriodicAlertGroupMinute specifies
the minute of hour at which the hourly message is generated.
A value of 'minutes' indicates that a message will be
generated periodically after the interval specified in
ccmPeriodicAlertGroupIntervalMinutes expires.