The ccmPhoneFailedIndex value of the last entry that
was added to the ccmPhoneFailedTable. This value
together with sysUpTime can be used by the manager
applications to identify the new entries in the
ccmPhoneFailedTable since their last poll. This
value need not be the same as the highest index in the
ccmPhoneFailedTable as the index could have wrapped
around. The initial value of this object is 0 which
indicates that there has been no entries added to this
table. When the SNMP service is restarted this value will
be reset to 0.