Dahua VTH1550CH Quick Install Manual - Page 5
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Adding Additional VTH Units
When additional VTH units are to be added to the system, usually it is required that all VTH units are called by the VTO.
To enable this feature and configure the additional VTH units;
Login to the VTO web browser and go to System Config > LAN Config and tick the Group Call option.
Click OK then select Logout > Reboot
On the additional VTH unit, first configure the network address within the same range as both the VTO and existing VTH units.
Go to Project Settings > Product Info and select Master, this will change the VTH to Extension mode. Input the room number of the
master unit followed by -1, as an example if the room number is 1 enter 1-1 or 1-2, 1-3 etc for further additional units.
In the Master IP field enter the IP address of the main VTH unit.
Select OK to save the setting, the configuration is now complete.
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