This attribute indicates the number of times a translation attempt
from an X.25 address to an Encapsulation address failed to find a
corresponding Encapsulation address. Such a failure could occur
when a incoming call received from the link by the X.25 DTE is
directed to a specific RemoteGroup because the called address
matches the localAddress attribute of the RemoteGroup component.
If the RemoteGroup component does not have a Peer component
linked in its linkToPeer attribute list, with the x25Address attribute
equal to the calling address from the incoming call packet, there is
no appropriate Peer component, so the call is cleared and this
counter is incremented.