This object contains the operation status of the external
ISDN S/T port.
activated - The external ISDN S/T port is activated.
The port is active and data can be transmitted
and received on the port.
activationPending - The external ISDN S/T port is in
activation pending state. Either the CO
or the router has initiated activation
of the port, but activation has not yet
completed. Data cannot be transmitted
or received.
deactivated - The external ISDN S/T port is deactivated.
Either no ISDN device is attached to the
external S/T port or the ISDN line to the CO is
deactivated. Data cannot be transmitted or
received on the S/T port.