This object indicates which algorithm should be used to select timing sources
for use as System Synchronized sources. Selecting Ordered_list causes sources
to be selected for use in strict numerical order, as assigned by default or by
the operator. Selecting SSM_Quality will cause sources to be selected based upon
the quality level of the timing source, as indicated by the sources Synchronized
Status Messages.
Do not select SSM_Quality unless all configured timing sources support SSM's