2N NetStar Admin manual - Manual (Page 230)

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9.1 Setting Properties
Fall-Down Hierarchy
All the tag parameters are used according to a fall-down hierarchy of the Properties
PBX. It means that setting a parameter on one level you cannot be sure that it will be
used. Each level of this fall-down hierarchy has a preset priority. The following figure
defines all the fall-down hierarchy levels. The higher the level, the higher the priority.
Figure: View of PBX fall-down Hierarchy. Higher levels have higher priorities
It implies from the figure above that the parameters set on the extension profile level
have the highest priority and the parameters set on the virtual port type level have the
lowest priority. If a parameter is set to the
value on a level, a different setting Default
on a lower level is searched for this parameter. If a parameter is not set on any level
(Default is set on all levels), the PBX uses the value preset by the source code.