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![](https://files.manualsfile.com/91658739-vth8641kms-wp/bg74.png)
Figure 5-8 Arm and disarm mode
5.5 DMSS Calling VTH
Make sure that the VTH and VTO are properly connected.
Procedure
Step 1 On the Home screen, tap , select the VTH you have just added, and then tap Device
Details to go to the function screen.
Step 2 Tap Call Video Intercom to call the VTH you added to the DMSS.
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