An indication of whether NCDP is presently running on an
interface. When NCDP is enabled for an interface, the
interface is an active member of the clock distribution
topology as seen by the NCDP protocol entity.
After this object is instantiated by the agent the
managed system initializes the value of this object to 'true'
if it determines that the physical interface is an ATM
Network-to-Network Interface (see ATM Forum Private
Network-Network Interface Specification Version 1.0). In
all other cases the managed system initializes the value of
this object to 'false'.