Selects whether the interface will be used primarily as as
timing provider for other interfaces on the same board. This
object is applicable only if the interface supports analog
video reference signal, or digital video reference signal, i.e.
if any of the bits `avrs' or `dvrs' is set in
itsIfCapabilities.
no(0). Used primarily as normal transport interface and
secondarily as digital timing provider. Operational state is
non-dormant and alarms are raised only when ingress or egress
connection exists.
analog(1). Used primarily as analog timing provider. Neither
ingress nor egress connections are allowed. Operational
state is non-dormant and alarms can be raised as needed.
This value can only be set if the interface supports analog
video reference signal, i.e. the `avrs' bit is set in
itsIfCapabilities.
digital(1). Used primarily as digital timing provider and
secondarily as transport interface. Operational state is
non-dormant and alarms can be raised as needed regardless
if any ingress or egress connection exists. This value can
only be set if the interface supports digital video reference
signal, i.e. the `dvrs' bit is set in itsIfCapabilities.