User's Manual

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If there are more than one VTO, you can call the main VTO and sub VTO
respectively.
Figure 7-13 Calling VTO
7.7 DMSS Calling VTH
Make sure that the VTH and VTO are properly connected.
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.