o  firmware identifier

    Implementation-specific string that identifies the firmware
    loaded into a device.

 o  operational communication port (OpenVMS)

    Specifies which channels of a multiple-line device unit are
    determined to be working by the module self-test. Each name
    identifies a working device communication port. Channels that
    are not named are not operational.

 o  state

    Current state of the communications device.

    disabled       The device unit entity has been created, but an
                   enable directive has not yet been issued.

    dump failed    An attempt to dump the device's microcode
                   has failed. This value appears only if the
                   characteristic auto load is false.

    dumping        An attempt to dump the device's microcode is in
                   progress.

    load failed    An attempt to load the device's microcode has
                   failed. This value appears only if auto load is
                   false.

    loading        An attempt to load the device's microcode is in
                   progress.

    running        The device's microcode has been loaded and the
                   device is ready to send and receive data.

    stopped        This state can occur in one of the following
                   circumstances:

                   o  The device entity unit has been enabled and
                      auto load is false.

                   o  The device has been reinitialized by the
                      system.

                   o  The device failed, a dump operation has
                      completed (the characteristic auto dump is
                      true, but the characteristic auto load is
                      false).

 o  uid

    Entity's unique identifier, which is generated when the entity is
    created.