Figure 72: Zero Config Configuration Architecture for End Point Device 
 
The configuration options in model layer and device layer have all the option in global layers already, i.e., the 
options in global layer is a subset of the options in model layer and device layer. If an option is set in all three 
layers with different values, the highest layer value will override the value in lower layer. For example, if the user 
selects  English  for  Language  setting  in  Global  Policy  and  Spanish  for  Language  setting  in  Default  Model 
Template, the language setting  on  the device  to  be provisioned  will  use  Spanish  as  model  layer  has  higher 
priority than global layer. To sum up, configurations in higher layer will always override the configurations 
for the same options/fields in the lower layer when presented at the same time. 
 
After understanding the zero config configuration architecture, users could configure the available options for 
end  point  devices  to  be  provisioned  by  the  UCM6200  by  going  through  the  three  layers.  This  configuration 
architecture allows users to set up and manage the Grandstream end point devices in the same LAN area in a 
centralized way. 
 
Auto Provisioning Settings 
 
By  default,  the  Zero  Config  feature  is  enabled  on  the  UCM6200  for  auto  provisioning. Three  methods  of 
auto provisioning are used.