This object contains the operation status of the ISDN
BRI integrated U interface.
activated - The ISDN U interface is activated.
The interface is active and data can be
transmitted and received through the interface.
activationPending - The ISDN U interface is in
activation pending state. Either the CO
or the router has initiated activation
of U interface, but activation has not yet
completed. Data cannot be transmitted
or received.
deactivated - The ISDN U interface is deactivated.
The ISDN line to the CO is deactivated.
Data cannot be transmitted or received on the
ISDN U interface.