I am not sure if BI app or other viewing app would support viewing two servers simultaneously. Hopefully other memers will speak to that question
I think this was discussed on another thread... "site to site" vpn connection is the keyword..
we all have to remember... this is a company ! so
@looney2ns is right with what he is saying.
you might be able to install something on your home , setup a cheap asus vpn router , but dealing with companies might be a next level job... also you have to think about what happens if you damage other installations... are you even insured to handle the costs ? what happens if your installation is the cause of fire and one location burn down? are you insured ? i am not familiar with us liability system, but it may take you everything you have.
i would take
@looney2ns suggestion as a good hint...
PAY someone who install you some GOOD network equipment and cables... if you buy everything from ubiquiti you can have all what you want...
2x Ubiquiti security gateway
4x Ubiquiti poe switch
4x p2p bridge
proper cables to cameras ...
they are able to set up site to site vpn connections etc ... are able to run streaming over p2p bridges without issues, vlans, 801x ............. many more
2x nvr or BI computer
12x 5442
you end up by paying around 3000-5000 USD for the equipment
i dont think that it would cost 25.000 USD to run cables for 12 cameras / install p2p bridges .................................. but can be possible, we not seen anything. if existing cables could be used, it would be much cheaper..
configuration can be done by someone else.
i would not even trust something (other than cables) if they leave it. who knows how old the p2p bridge is ? maybe it is not good enough to handle more traffic than before, ........ there can be many reasons to not use old equipment from maybe decades ago... sure you will find one who do it to cut the costs, and then the problems arise...