VTH to VTH calls between different households?

sh1979

n3wb
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Jul 3, 2017
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Hi,
I am wondering if there is possibility to create a SIP trunk between two VTOs that belongs to different households?

The idea is as follows:

I have two different households, both with VTO+VTH devices which works separate one from each other. However, I have a network connection between them (via VPN over internet) so I can setup VTH in one house to watch front doors from other house. But I would like to have possibility to call from VTH in one house to VTH in other house, like intercom between houses. Is it possible to do that? Request is that doorbell in both households should work in case internet and VPN outage (in that case only intercom calls between VTH would not be possible).
 
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