A unique value used to identify this cross-connect. For each
interface associated with this cross-connect, the agent reports
this cross-connect index value in the
coifccIfCrossConnectIdentifier object of the corresponding
coifccInterfaceTable entry.
When the value of this index is equal to the current value
of coifccCcIndexNext, the agent will modify the value of
coifccCcIndexNext to the next unassigned index.